The Severe Weather and Flooding Event of April 17, 2013

Summary
Storm Data
Flooding/Rainfall
Radar Imagey
Surface Data
Multimedia

Summary

Through Wednesday morning, a very stout and slow moving warm front had set up from just north of Stillwater to Kingfisher to Altus through the northern portions of the Texas Cap Rock Region Within the warm sector, folks across central and southern Oklahoma and western north Texas awoke to very hot and muggy conditions as temperatures were quick to climb into the 70s and 80s with dew points in the mid to upper 60s from the OKC Metro to Wichita Falls Overall, the skies remained well overcast, with a mid-level stratus deck blanketing the region With the warm front stalled from north central Oklahoma through western north Texas and with warm moist surface conditions, the capping inversion along the Texoma region was quick to erode Limited forcing through the late morning and noon limited convection across the region

With skies beginning to clear across western north Texas through noon, a cumulus field started to intensify with clearing spreading into far southwestern Oklahoma. Through 1 pm CDT, initial updrafts along the warm front began to intensify, with the first storms feeding off the boundary, modifying its location in the process From near 1:30pm through the overnight near steady development of strong to severe convection continued to be focused along the warm front from western north Texas through central Oklahoma.

With a rich environment of low level instability and intensifying deep layer shear, the most severe storms occurred across southwestern Oklahoma and portions of western north Texas Supercell thunderstorms across the area produced five reports of brief tornadoes and numerous reports of quarter to golf ball sized hail, with reports of baseballs with storms across Comanche County. (More information can be found in the Storm Data tab.

More weather information (storm reports, weather maps, soundings, etc.) about this day can be found at this link: https://www.spc.noaa.gov/exper/archive/event.php?date=20130417

Storm Data

The official NWS Norman storm data report for April 2013 is available here.

Preliminary Storm Reports on April 17, 2013 from the Storm Prediction Center

Preliminary Storm Reports for 4/17/2013 Compiled by the Storm Prediction Center

Preliminary Storm Reports on April 17, 2013 from NWS Norman

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE NORMAN OK
320 PM CDT THU APR 18 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0102 PM     HAIL             MOORELAND               36.44N 99.21W
04/17/2013  E0.25 INCH       WOODWARD           OK   TRAINED SPOTTER

0315 PM     HAIL             7 NW MOUNTAIN VIEW      35.17N 98.84W
04/17/2013  E1.00 INCH       WASHITA            OK   PUBLIC

0328 PM     HAIL             COWDEN                  35.25N 98.72W
04/17/2013  E1.00 INCH       WASHITA            OK   PUBLIC

0338 PM     HAIL             7 WSW FREDERICK         34.35N 99.13W
04/17/2013  E1.25 INCH       TILLMAN            OK   STORM CHASER

0342 PM     HAIL             7 S TIPTON              34.40N 99.14W
04/17/2013  E1.50 INCH       TILLMAN            OK   AMATEUR RADIO

0410 PM     HAIL             MANITOU                 34.51N 98.98W
04/17/2013  E1.00 INCH       TILLMAN            OK   AMATEUR RADIO

0512 PM     HAIL             5 E HOLLIS              34.69N 99.83W
04/17/2013  E1.25 INCH       HARMON             OK   CO-OP OBSERVER

0515 PM     HAIL             CACHE                   34.63N 98.62W
04/17/2013  E1.75 INCH       COMANCHE           OK   AMATEUR RADIO

0525 PM     HAIL             RICHLAND                35.58N 97.80W
04/17/2013  E1.00 INCH       CANADIAN           OK   PUBLIC

0526 PM     HAIL             9 SW LAWTON             34.51N 98.53W
04/17/2013  E1.75 INCH       COMANCHE           OK   STORM CHASER

0530 PM     HAIL             3 NW LAKE LAWTONKA      34.76N 98.54W
04/17/2013  E1.75 INCH       COMANCHE           OK   AMATEUR RADIO

0546 PM     TSTM WND GST     2 N FREDERICK           34.42N 99.01W
04/17/2013  M68.00 MPH       TILLMAN            OK   TRAINED SPOTTER

            RFD WIND

0546 PM     HAIL             ELGIN                   34.78N 98.29W
04/17/2013  E1.75 INCH       COMANCHE           OK   AMATEUR RADIO

0549 PM     HAIL             9 S ALTUS               34.51N 99.33W
04/17/2013  E1.75 INCH       JACKSON            OK   AMATEUR RADIO

0559 PM     HAIL             ELK CITY                35.41N 99.42W
04/17/2013  E1.00 INCH       BECKHAM            OK   TRAINED SPOTTER

0615 PM     HAIL             1 E QUANAH              34.30N 99.72W
04/17/2013  E1.00 INCH       HARDEMAN           TX   EMERGENCY MNGR

0624 PM     HAIL             2 W CYRIL               34.90N 98.24W
04/17/2013  E1.25 INCH       CADDO              OK   AMATEUR RADIO

0625 PM     TSTM WND GST     CYRIL                   34.90N 98.20W
04/17/2013  M60.00 MPH       CADDO              OK   AMATEUR RADIO

0629 PM     HAIL             CACHE                   34.63N 98.62W
04/17/2013  E2.75 INCH       COMANCHE           OK   TRAINED SPOTTER

0631 PM     HAIL             2 S CACHE               34.60N 98.62W
04/17/2013  M2.25 INCH       COMANCHE           OK   STORM CHASER

0633 PM     HAIL             2 WNW CACHE             34.64N 98.65W
04/17/2013  E1.75 INCH       COMANCHE           OK   STORM CHASER

0635 PM     HAIL             SNYDER                  34.66N 98.95W
04/17/2013  E1.75 INCH       KIOWA              OK   AMATEUR RADIO

0636 PM     HAIL             2 SSW SNYDER            34.63N 98.97W
04/17/2013  E2.00 INCH       KIOWA              OK   STORM CHASER

0650 PM     HAIL             2 SE RAYLAND            34.04N 99.46W
04/17/2013  E1.00 INCH       WILBARGER          TX   PUBLIC

0650 PM     TORNADO          7 W LAWTON              34.60N 98.55W
04/17/2013                   COMANCHE           OK   NWS EMPLOYEE

            TORNADO REPORTED ON THE WEST SIDE OF LAWTON. DAMAGE
            REPORTED AT THE GOODYEAR PLANT.

0716 PM     HAIL             5 E CHICKASHA           35.04N 97.86W
04/17/2013  E1.75 INCH       GRADY              OK   AMATEUR RADIO

0716 PM     HAIL             1 W ELGIN               34.78N 98.31W
04/17/2013  E1.75 INCH       COMANCHE           OK   AMATEUR RADIO

0732 PM     HAIL             2 S ELGIN               34.75N 98.29W
04/17/2013  E1.25 INCH       COMANCHE           OK   AMATEUR RADIO

0737 PM     TORNADO          4 WNW STERLING          34.77N 98.24W
04/17/2013                   COMANCHE           OK   TRAINED SPOTTER

            NUMEROUS REPORTS OF A TORNADO CROSSING HIGHWAY 17 BETWEEN
            STERLING AND ELGIN.

0745 PM     HAIL             2 W CYRIL               34.90N 98.24W
04/17/2013  E1.00 INCH       CADDO              OK   AMATEUR RADIO

0800 PM     HAIL             4 NW NORMAN             35.26N 97.49W
04/17/2013  E1.00 INCH       CLEVELAND          OK   NWS EMPLOYEE

0803 PM     TORNADO          7 NNE HARROLD           34.17N 98.98W
04/17/2013                   WILBARGER          TX   STORM CHASER

            MULTIPLE REPORTS OF A TORNADO NORTH-NORTHEAST OF HARROLD.
            THIS TORNADO LASTED ONE TO TWO MINUTES.

0805 PM     TSTM WND GST     2 S ELGIN               34.75N 98.29W
04/17/2013  E70.00 MPH       COMANCHE           OK   AMATEUR RADIO

0805 PM     HAIL             2 S ELGIN               34.75N 98.29W
04/17/2013  E1.00 INCH       COMANCHE           OK   AMATEUR RADIO

0809 PM     HAIL             1 SE FLETCHER           34.81N 98.23W
04/17/2013  E1.25 INCH       COMANCHE           OK   STORM CHASER

0811 PM     TORNADO          9 NNE HARROLD           34.20N 98.97W
04/17/2013                   WILBARGER          TX   STORM CHASER

            A STORM CHASER REPORTED A TORNADO THAT LASTED FOR ABOUT
            30 SECONDS.

0818 PM     HAIL             4 NNE DAVIDSON          34.30N 99.05W
04/17/2013  E1.00 INCH       TILLMAN            OK   AMATEUR RADIO

0820 PM     HAIL             TINKER AIR FORCE BASE   35.42N 97.39W
04/17/2013  E1.00 INCH       OKLAHOMA           OK   PUBLIC

0835 PM     TSTM WND GST     3 W GRANDFIELD          34.23N 98.74W
04/17/2013  E60.00 MPH       TILLMAN            OK   AMATEUR RADIO

0835 PM     TSTM WND GST     4 WNW RUSH SPRINGS      34.80N 98.02W
04/17/2013  M61.00 MPH       GRADY              OK   MESONET

0835 PM     TSTM WND GST     2 SSE CHICKASHA         35.01N 97.94W
04/17/2013  M68.00 MPH       GRADY              OK   AMATEUR RADIO

0835 PM     TORNADO          7 WNW GRANDFIELD        34.27N 98.80W
04/17/2013                   TILLMAN            OK   TRAINED SPOTTER

            MULTIPLE REPORTS OF A TORNADO. PRELIMINARY ESTIMATE OF
            PATH WAS FROM 7 MILES WNW OF GRANDFIELD TO 2 MILES
            NORTHWEST OF GRANDFIELD BETWEEN 835 PM AND 845 PM. DAMAGE
            WAS REPORTED AT THE GRANDFIELD AIRPORT.

0837 PM     TSTM WND GST     4 SSW LOVELAND          34.25N 98.80W
04/17/2013  M79.00 MPH       TILLMAN            OK   STORM CHASER

0837 PM     TSTM WND GST     7 S CHOCTAW             35.38N 97.27W
04/17/2013  E60.00 MPH       OKLAHOMA           OK   NWS EMPLOYEE

0845 PM     TSTM WND GST     3 W GRANDFIELD          34.23N 98.74W
04/17/2013  M73.00 MPH       TILLMAN            OK   MESONET

0845 PM     FLASH FLOOD      3 W GRANDFIELD          34.23N 98.74W
04/17/2013                   TILLMAN            OK   MESONET

0850 PM     HAIL             3 E GRANDFIELD          34.23N 98.63W
04/17/2013  E2.00 INCH       TILLMAN            OK   NWS EMPLOYEE

0850 PM     TSTM WND GST     3 W GRANDFIELD          34.23N 98.74W
04/17/2013  M64.00 MPH       TILLMAN            OK   MESONET

0850 PM     FLASH FLOOD      5 E MEDICINE PARK       34.73N 98.41W
04/17/2013                   COMANCHE           OK   AMATEUR RADIO

0852 PM     HAIL             3 N RUSH SPRINGS        34.82N 97.96W
04/17/2013  E1.00 INCH       GRADY              OK   TRAINED SPOTTER

0853 PM     HAIL             3 N RUSH SPRINGS        34.82N 97.96W
04/17/2013  E2.50 INCH       GRADY              OK   AMATEUR RADIO

0853 PM     FLASH FLOOD      NEWCASTLE               35.25N 97.60W
04/17/2013                   MCCLAIN            OK   TRAINED SPOTTER

0855 PM     FLASH FLOOD      CHICKASHA               35.04N 97.95W
04/17/2013                   GRADY              OK   AMATEUR RADIO

            WIDESPREAD FLASH FLOODING THROUGHOUT TOWN

0900 PM     HAIL             HARRAH                  35.49N 97.16W
04/17/2013  E0.75 INCH       OKLAHOMA           OK   FIRE DEPT/RESCUE

0901 PM     HAIL             5 S NINNEKAH            34.88N 97.92W
04/17/2013  E1.75 INCH       GRADY              OK   STORM CHASER

0918 PM     HAIL             1 E COOKIETOWN          34.27N 98.43W
04/17/2013  E1.25 INCH       COTTON             OK   TRAINED SPOTTER

0925 PM     HAIL             1 N ALEX                34.93N 97.78W
04/17/2013  E1.00 INCH       GRADY              OK   POST OFFICE

0926 PM     HAIL             6 N COOKIETOWN          34.36N 98.45W
04/17/2013  E1.00 INCH       COTTON             OK   TRAINED SPOTTER

0929 PM     HAIL             WALTERS                 34.36N 98.31W
04/17/2013  E1.75 INCH       COTTON             OK   TRAINED SPOTTER

0930 PM     HAIL             3 W LAKE THUNDERBIRD    35.23N 97.28W
04/17/2013  E0.75 INCH       CLEVELAND          OK   TRAINED SPOTTER

1009 PM     HAIL             6 N MEEKER              35.59N 96.89W
04/17/2013  E1.00 INCH       LINCOLN            OK   EMERGENCY MNGR

1012 PM     HAIL             2 WNW PURCELL           35.02N 97.40W
04/17/2013  E1.50 INCH       MCCLAIN            OK   TRAINED SPOTTER

1030 PM     HAIL             5 SSW MARLOW            34.57N 98.00W
04/17/2013  E1.00 INCH       STEPHENS           OK   TRAINED SPOTTER

1046 PM     FLASH FLOOD      SHAWNEE                 35.34N 96.92W
04/17/2013                   POTTAWATOMIE       OK   TRAINED SPOTTER

            NUMEROUS STREETS IN CURB DEEP WATER

1105 PM     HAIL             LINDSAY                 34.84N 97.61W
04/17/2013  E1.00 INCH       GARVIN             OK   POST OFFICE

1139 PM     TSTM WND GST     LEXINGTON               35.02N 97.34W
04/17/2013  E60.00 MPH       CLEVELAND          OK   LAW ENFORCEMENT

0205 AM     NON-TSTM WND GST 3 W MEDICINE PARK       34.73N 98.55W
04/18/2013  M58.00 MPH       COMANCHE           OK   MESONET

0320 AM     NON-TSTM WND GST 3 W MEDICINE PARK       34.73N 98.55W
04/18/2013  M62.00 MPH       COMANCHE           OK   MESONET

Flooding and Rainfall Data

24-hour Multi-sensor Precipitation Estimates Ending at 7:00 am CDT on 4/18/2013

24-hour Muliti-sensor Precipitation Estimates with Mesonet Station Totals Ending at 9:00 am CDT on 4/18/2013

24-hour Muliti-sensor Precipitation Estimates with Mesonet Station Totals Ending at 7:00 am CDT on 4/18/2013

Dual Pol Storm Total Precipitation Estimates from the Frederick, OK Radar Ending at 5:47 am CDT on 4/18/2013

24-hour Daily Rainfall Reports Ending at 7:00 am CDT on 4/18/2013

DAILY PRECIPITATION REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1144 AM CDT THU APR 18 2013

...SUMMARY OF 24-HR PRECIPITATION OBSERVATIONS
   ENDING AT 7 AM CDT 4/18/13... 

STATION                         ID         AMOUNT

        --- NORTHWEST OKLAHOMA --- 

ALVA 1 NE                      AVAO2       0.23
ALVA 7 SSW                     AVSO2       0.22
ALVA                           ALVO2       0.45
AMES 3.8 ESE                   OKMJ01      0.07
AMES                           AMEO2       0.11
ARNETT 8 WSW                   ATSO2       0.10
BUFFALO 17 NE                  BFFO2       0.38
BUFFALO 1 SW                   BFSO2       0.24
CHEROKEE                       CHRO2       0.09
FAIRVIEW 0.6 N                 OKMJ02      0.12
FAIRVIEW 1 W                   FVSO2       0.14
FORT SUPPLY LAKE               FSLO2       0.13
FREEDOM 3 SSW                  FDSO2       0.41
FREEDOM                        FREO2       0.31
GAGE AIRPORT                   GAG          T  
LAHOMA 1 W                     LHMO2       0.13
LAHOMA 1 WSW                   LHSO2       0.13
LAHOMA RESEARCH STATION        LAHO2       0.20
MAY RANCH/FREEDOM 16 NNE       MYSO2       0.28
MUTUAL                         MUTO2       0.17
ORIENTA                        ORIO2       0.06
SEILING 3 N                    SEIO2       0.20
SEILING 7 WNW                  SESO2       0.34
SHATTUCK 0.7 SSW               OKEL03      0.13
WAYNOKA 5 S                    WANO2       0.13
WAYNOKA                        WAYO2       0.34
WOODWARD 2 WSW                 WWSO2       0.20
WOODWARD 6 E                   WDGO2       0.15

        --- NORTH CENTRAL OKLAHOMA --- 

BILLINGS 4.1 SSE               OKNB01      0.11
BILLINGS                       BILO2       0.20
BLACKWELL 0.9 SSE              OKKY06      0.20
BLACKWELL 1 NE                 BLKO2       0.08
BLACKWELL 4 SSE                BLSO2       0.31
BLACKWELL  AT                  BLAO2       0.16
BRAMAN                         BRMO2       0.22
BRECKENRIDGE 3 SE              ENSO2       0.12
ENID 1.3 E                     OKGD10      0.15
ENID 2 ENE                     ENIO2       0.06
ENID 3.1 WSW                   OKGD11      0.09
ENID 3.3 W                     OKGD09      0.09
ENID 3.6 WNW                   OKGD07      0.08
ENID                           ESCO2       0.14
GREAT SALT PLAINS LAKE         GSPO2       0.05
HARDY 1 SE                     HRDO2       0.40
HARDY 2 S                      HARO2       0.39
HUNTER 6.0 NNE                 OKGT01      0.28
JEFFERSON                      JEFO2       0.26
KAW LAKE                       KAWO2       0.39
LAHOMA RESEARCH STATION        LAHO2       0.20
LAMONT                         LAMO2       0.26
MEDFORD 1 SW                   MFSO2       0.32
MEDFORD                        MEDO2       0.35
NEWKIRK 0.3 W                  OKKY07      0.27
NEWKIRK 1 NW                   NWKO2       0.27
NEWKIRK 8 E                    NKSO2       0.38
PERRY                          PERO2       0.99
PERRY                          PRRO2       1.00
PONCA CITY 2.5 SW              OKKY20      0.18
PONCA CITY 4.7 NW              OKKY22      0.08
PONCA CITY 8 E                 PCYO2       0.67
PONCA CITY AIRPORT             PNC         0.32
PONCA CITY                     PCCO2       0.33
RED ROCK 7 SSE                 PYSO2       1.10
TONKAWA                        TONO2       0.16
VANCE AIR FORCE BASE           END         0.13

        --- WEST CENTRAL OKLAHOMA --- 

BESSIE 4 WNW                   BSSO2       0.15
BUTLER 5 SW                    BTSO2       0.36
CAMARGO 4 WNW                  CMSO2       0.16
CANTON LAKE 2 NW               CNLO2       0.06
CARTER 3 S                     CARO2       0.16
CHEYENNE 11 NW                 CRWO2       0.10
CHEYENNE 1 N                   CHYO2       0.13
CHEYENNE 6 SW                  CYSO2       0.20
CLINTON 1 N                    CLIO2       0.22
CLINTON 5.2 SSW                OKWH03      0.03
CLOUD CHIEF 3 N                CCWO2       0.21
COLONY 5 SE                    NYSO2       0.25
COLONY                         CNYO2       0.35
CORN 5 NE                      CXSO2       0.24
ELK CITY 1 N                   OKBC14      0.35
ELK CITY 6.4 N                 OKBC15      0.33
ELK CITY AIRPORT               ELCO2       0.24
ERICK 0.2 NE                   OKBC03      0.17
ERICK 4 ESE                    EKSO2       0.18
ERICK                          ERCO2       0.14
ERICK                          ERIO2       0.17
FOSS 6 N                       FBFO2       0.10
FOSS LAKE                      FOSO2       0.10
HAMMON 4 ENE                   HMMO2       0.34
MORAVIA 2 NNE                  MRVO2       0.07
PUTNAM 3 N                     PMSO2       0.09
RETROP                         RETO2       0.24
SAYRE 0.7 NE                   OKBC04      0.11
SAYRE 1 NE                     SARO2       0.11
SAYRE 2 SE                     SAYO2       0.17
SAYRE 5.6 N                    OKBC02      0.14
SAYRE 5.8 NW                   OKBC05      0.16
SWEETWATER 3 W                 SWTO2       0.10
WATONGA 1 N                    WTNO2       0.08
WATONGA 2 S                    WATO2       0.31
WATONGA 7 W                    WNSO2       0.15
WEATHERFORD 4 WSW              WXSO2       0.06
WEATHERFORD                    WEAO2       0.14
WILLOW 10 ENE                  RTSO2       0.24
WILLOW 6.5 N                   OKBC06      0.07

        --- CENTRAL OKLAHOMA --- 

AGAWAM 5 WNW                   AMSO2       3.13
AMBER                          AMBO2       3.85
APACHE 4 ENE                   ACSO2       2.10
ARCADIA LAKE                   ACDO2       1.51
BETHANY 0.7 SSW                OKOK05      1.88
BOWLEGS 3 NE                   SMSO2       0.46
CALVIN 1 NE                    CLVO2       0.35
CALVIN 5 WNW                   HLSO2       0.51
CEMENT 4 SE                    CBSO2       1.01
CHANDLER 4.6 NNE               OKLN05      2.01
CHANDLER                       CHNO2       1.90
CHICKASHA 2 SSE                CCSO2       3.77
CHICKASHA EXP. STATION 1 E     CHKO2       3.52
CHOCTAW 1.4 WSW                OKOK48      3.13
COYLE 7 N                      MASO2       0.77
CRESCENT 1 SE                  CREO2       1.31
CUSHING 3.2 WNW                OKPY08      1.46
EDMOND 1.6 W                   OKOK03      1.38
EDMOND 5.8 NNE                 OKLG10      1.42
EDMOND 6.4 NW                  OKLG09      1.17
EDMOND 8.0 WNW                 OKOK25      1.39
EL RENO 2 N                    ELNO2       1.55
EL RENO 5 WNW                  ERSO2       0.66
GLENCOE 3 W                    OKPY09      0.73
GUTHRIE 1.9 S                  OKLG02      1.23
GUTHRIE 2.9 N                  OKLG11      0.86
GUTHRIE 3 N                    GTRO2       0.87
GUTHRIE 4.9 SSE                OKLG04      1.09
GUTHRIE 4 WSW                  GTSO2       0.91
HALL PARK 2.4 WNW              OKCV04      2.39
HALL PARK 2 SSE                OKCV92      1.76
JONES 5N                       OKOK46      1.70
KINGFISHER 2 NE                KFSO2       0.38
KINGFISHER                     KINO2       0.80
LAKE THUNDERBIRD               NRMO2       2.56
LEXINGTON 10.7 ENE             OKCV80      2.78
MARSHALL 3 SSE                 MSSO2       0.82
MARSHALL                       MSHO2       0.64
MEEKER 4 W                     MKRO2       1.71
MEEKER 9.1 NW                  OKLN08      2.80
MINCO 2 SSW                    MOSO2       2.18
MOORE 1.3 ENE                  OKCV53      2.19
NEWALLA 7.1 SW                 OKCV82      2.12
NINNEKAH 2 NE                  NHSO2       2.83
NINNEKAH 2 NNW                 NNSO2       2.98
NOBLE 1.4 WNW                  OKCV86      3.40
NOBLE 2 S                      NOLO2       3.50
NOBLE 3.3 SE                   OKCV17      3.61
NORGE 3 WSW                    NMSO2       3.37
NORMAN 10.9 ESE                OKCV61      5.48
NORMAN 1.5 W                   OKCV44      2.66
NORMAN 1.7 E                   OKCV20      1.86
NORMAN 1.7 ESE                 OKCV74      1.85
NORMAN 1.7 SSE                 OKCV76      1.74
NORMAN 1.9N                    OKCV84      2.62
NORMAN 2.1 NNE                 OKCV71      2.64
NORMAN 2.7 SW                  OKCV45      2.21
NORMAN 2 NW                    NRSO2       2.35
NORMAN 3.1 WNW                 OKCV12      2.88
NORMAN 3.4 SE                  OKCV79      2.26
NORMAN 3.5 SSE                 OKCV99      2.17
NORMAN 5.5 ESE                 OKCV69      2.83
NORMAN 6.3 E                   OKCV29      2.64
NORMAN 7.9 ESE                 OKCV06      3.22
NORMAN 8.4 SE                  OKCV09      3.22
NORMAN-NWS                     NMNO2       1.87
OKARCHE 0.4 NE                 OKKN02      0.58
OKLAHOMA CITY 10.9 S           OKCV91      1.65
OKLAHOMA CITY 1.7 NNW          OKOK26      1.96
OKLAHOMA CITY 3ENE             OESO2       2.16
OKLAHOMA CITY 3WNW             OYSO2       2.14
OKLAHOMA CITY 6 S              OKCO2       2.33
OKLAHOMA CITY 7N               OCSO2       1.71
OKLAHOMA CITY                  OLBO2       1.75
PERKINS 2 NNW                  PRSO2       1.20
PERKINS                        PRNO2       1.20
PIEDMONT 3.2 ESE               OKCN07      1.59
PRAGUE 1 WNW                   PRGO2       4.50
PURCELL 0.4 NNE                OKMC10      2.19
PURCELL 0.7 SSE                OKMC09      2.01
PURCELL 1 E                    PRCO2       1.70
PURCELL 6.7 W                  OKMC05      3.35
RIPLEY 3 S                     RIPO2       1.31
RUSH SPRINGS 2 WNW             RHSO2       1.75
RUSH SPRINGS 2 WNW             RHSO2       1.75
SEMINOLE 2.6 WNW               OKSM03      1.54
SEMINOLE                       SEMO2       1.20
SEWARD                         SCCO2       0.93
SHAWNEE 2.8 NNW                OKPT12      4.30
SHAWNEE 2 NE                   SHAO2       3.83
SPARKS 3 NNE                   CHSO2       1.61
SPENCER 3 NNE                  OKOK47      1.70
SPENCER 3 NNE                  OKOK47      1.70
STILLWATER 2.7 SSE             OKPY06      0.90
STILLWATER 2 W                 SRSO2       0.94
STILLWATER 2 W                 STWO2       0.94
STILLWATER REGIONAL AIRPORT    SWO         0.95
STROUD 1.1 SSW                 OKLN07      1.50
STROUD 4 S                     SDFO2       2.25
TECUMSEH 0.4 ESE               OKPT02      4.16
TINKER AIR FORCE BASE          TIK         1.99
WARR ACRES 0.4 SSE             OKOK29      1.59
WARWICK 1 SW                   WRWO2       2.93
WASHINGTON 6 SSW               PCSO2       2.91
WILEY POST AIRPORT             PWA         1.53
WILL ROGERS WORLD AIRPORT      OKC         2.39
YUKON 2.2 E                    OKCN12      1.41
YUKON 2.9 SSE                  OKCN13      1.82
YUKON 6.4 NE                   OKCN14      1.61

        --- SOUTHWEST OKLAHOMA --- 

ALBERT 3 W                     AWCO2       0.29
ALTUS AIR FORCE BASE           LTS         0.45
ALTUS-LUGERT DAM               ATUO2       0.41
ANADARKO 1 NE                  ANDO2       1.37
ANADARKO 3.8 E                 OKCD11      3.47
ANADARKO 3 E                   ANAO2       2.55
APACHE 0.4 W                   OKCD02      5.35
APACHE 2.2 NNE                 OKCD16      3.94
APACHE                         APCO2       5.39
CARNEGIE 2 E                   CAGO2       0.52
CEMENT 6 S                     CISO2       3.92
CHATTANOOGA 3 NE               CHAO2       0.52
COLONY 5 SE                    NYSO2       0.25
COOKIETOWN 6.3 NNW             OKCT01      1.03
CORN 5 NE                      CXSO2       0.24
CYRIL 5.6 SE                   OKCC10      4.16
EAKLEY 2 SE                    EKCO2       0.18
EAKLEY 2 SW                    EAKO2       0.08
EAKLY 3 NE                     EFSO2       0.10
EAKLY 4 NNW                    EDSO2       0.30
EAKLY 6 NNE                    EBSO2       0.21
EAKLY 7NE                      ECSO2       0.18
EAKLY 7 NNW                    EASO2       0.35
ELGIN 0.8 SE                   OKCC06      2.10
FLETCHER 3 NNW                 FLSO2       3.96
FORT COBB 4 NNW                FCSO2       0.47
FORT COBB LAKE 4 NW            FTCO2       0.30
FREDERICK 6.0 SSW              OKTN02      1.20
FT. SILL/HENRY POST AIRFIELD   FSI         0.93
GOULD 3 W                      HISO2       0.32
GRANDFIELD 3 W                 GRSO2       0.32
GRANITE 5 S                    GNTO2       0.12
HEADRICK 2 E                   HEAO2       1.60
HINTON 2.8 N                   OKCD10      0.23
HINTON 7 W                     HTSO2       0.41
HOBART 4 SE                    HBSO2       0.71
HOBART                         HOBO2       0.46
HOBART MUNICIPAL AIRPORT       HBR         0.64
LAWTON                         LWTO2       0.90
MANGUM 0.5 ESE                 OKGR02      0.20
MANGUM 5 SE                    MNSO2       0.21
MANGUM                         MGUO2       0.21
MEDICINE PARK 3 W              LWSO2       6.63
MOUNTAIN PARK 9.7 NE           OKKW09      1.27
ROOSEVELT                      RSVO2       0.12
RUSH SPRINGS 4 WNW             APSO2       4.61
SICKELS 4 WNW                  HLCO2       0.21
SNYDER 0.1 SSE                 OKKW07      2.96
SNYDER 4 SW                    SYDO2       3.29
TIPTON 4 S                     TPSO2       1.89
TOM STEED LAKE                 MTNO2       1.24
VINSON 8 NNW                   CRLO2       0.09
VINSON  AT                     VINO2       0.01
WALTERS 1 NW                   WTSO2       0.74
WICHITA MOUNTAINS RAWS         WMRO2       3.19
WILLOW                         WILO2       0.09

        --- SOUTH CENTRAL OKLAHOMA --- 

ADA 0.3 NNW                    OKPN06      0.18
ADA 0.6 ESE                    OKPN09      0.18
ADA 2 NNE                      ADSO2       0.17
ADA 8.6 WSW                    OKPN05      0.13
ARDMORE 3 ENE                  ARSO2       0.54
BLUE 1 W                       BLUO2       0.59
BURNEYVILLE 2 SE               BNSO2       0.50
BYARS 3 ESE                    SFSO2       0.41
CENTRAHOMA 1 E                 CNSO2       1.10
CENTRAHOMA 2 ESE               CENO2       0.95
COURTNEY 2S                    COUO2       0.13
DAISY 4 ENE                    DAIO2       0.59
DICKSON 3 N                    DURO2       0.53
DUNCAN                         DNCO2       0.54
DURANT 6 SSE                   DTSO2       0.79
DURANT                         DUAO2       0.70
ELMORE CITY 3 SW               ELMO2       0.51
FARRIS 3 NW                    FRSO2       0.45
FILLMORE 1 N                   FILO2       0.86
FITTSTOWN 2 E                  FISO2       0.17
HEALDTON                       HLDO2       0.10
LAKE OF THE ARBUCKLES          ARBO2       0.10
LANE 1 WNW                     LNSO2       0.37
LEBANON 5 SSE                  MDSO2       0.82
LEHIGH 4 SW                    LEHO2       0.53
LONE GROVE 2 N                 LGSO2       0.25
MADILL                         MADO2       0.44
MARLOW 1 WSW                   MLWO2       0.50
MCGEE CREEK DAM                MGDO2       0.54
MCGEE CREEK LAKE               MGCO2       0.42
MCGEE CREEK WILDLIFE REFUGE    MGWO2       0.51
PAULS VALLEY 1 SSW             PVSO2       0.46
PAULS VALLEY 2 WNW             PLVO2       0.52
PONTOTOC                       PONO2       0.39
REAGAN 1 NNE                   RPCO2       0.39
RINGLING 1 N                   RNSO2       0.15
RYAN 5 WNW                     OKJF03      0.30
SULPHUR 4 NNE                  SLSO2       0.40
TERRAL 1 S                     TRLO2       0.03
TISHOMINGO 3 SE                TISO2       0.40
TISHOMINGO 6 N                 TSSO2       0.82
VELMA 7 NW                     DNSO2       0.25
WAURIKA 1 ENE                  WRSO2       0.08
WAURIKA LAKE                   WRLO2       0.06
WAURIKA                        WAKO2       0.02

        --- WESTERN NORTH TEXAS --- 

ARCHER CITY 0.7 SSW            TXAC03      0.28
BURKBURNETT 2 NE               BKBT2       0.01
CROWELL                        CWLT2       0.43
DUNDEE 5 NW                    DSCT2       0.04
ELECTRA 0.1 SE                 TXWT07      0.04
KADANE CORNER 1 SSW            TXWT14      0.02
LAKE ARROWHEAD                 ARRT2       0.26
LAKE KEMP DAM                  SYOT2       0.08
LAKE KEMP                      SMUT2       0.07
LAKE KICKAPOO                  ARHT2       0.03
MABELLE 6 N                    MBLT2       0.07
QUANAH 4 N                     QGCT2       0.04
SEYMOUR 11 NW                  SEYT2       0.18
TRUSCOTT 3.9 NNW               TXKX01      0.01
VERNON 2 N                     VERT2       1.20
VERNON                         VNNT2       1.00
WICHITA FALLLS 7.2 WSW         TXWT15      0.03
WICHITA FALLS 2.2 S            TXWT08      0.03
WICHITA FALLS 3.4 SSW          TXWT13      0.02
WICHITA FALLS 5.2 SSW          TXAC02      0.03
WICHITA FALLS/SHEPPARD AFB     SPS         0.19
WICHITA FALLS                  WICT2       0.01

NO MEASURABLE PRECIPITATION WAS REPORTED ELSEWHERE IN THE
NWS NORMAN AREA.

Radar Imagery

KTLX (Oklahoma City, OK) 4/17/2013 11:00 am - 4/18/2013 7:00 am CDT

KFDR (Frederick, OK) 4/17/2013 10:00 am - 4/18/2013 7:00 am CDT

Surface Data Imagery Loop

Storm Multimedia

Storm Videos

Video of First Lawton, OK Storm (~5:30pm CDT) (Courtesy of Jared Leighton and Scott Blair, NWS employees)

Video of Second Lawton, OK Storm (~6:50pm) (Marcus Diaz, Storm Chaser)

Photos

NWS Operations

Photos of Lawton Storms and Damage

Storm #1


These two photos from the first Lawton storm show a well-defined wall cloud at left, and a clear slot at right. Photos courtesy C. Schwarz.

Storm #2



The series of photos above show the second Lawton storm as it produced a brief tornado. The top image shows a rapidly rotating wall cloud. The bottom two images show a tornado becoming wrapped in rain and hail. Photos courtesy C. Schwarz.

These two images show the magnificent, yet ominous structure of a high precipitation supercell. Tennis ball to baseball sized hail was being reported at this time near Cache. Photos courtesy C. Schwarz.