Severe Weather of May 30, 2013
| Local Storm Reports | Rainfall Reports |
Southerly winds, in the wake of the warm front that passed through on May 29, continued to bring warm and humid air into the Upper Mississippi River Valley region. During the afternoon hours, a trough of low pressure in the upper levels of the atmosphere lifting out of the central plains triggered what is known as a "bow echo" over eastern Iowa.
Bow echoes are notorious for producing wind damage. The northern portion of the bow, called the "comma head," is what affected our region, and in particular portions of northeast Iowa and southwest Wisconsin. Numerous reports of trees and power lines down were received, along with a wind gust as high as 70 mph.
Below is the radar loop from the event over the region and how it compares to the evolution of a bow echo on radar.
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Radar loop from 4:30 to 7:30 p.m. Click on image for a larger loop (will take longer to load) |
Evolution of a bow echo DB = downburst, or where where the strongest winds occur |
Bow echoes which produce severe thunderstorm winds ( >= 58 mph ) for over a 240 mile stretch is considered a "derecho". This bow echo was not a derecho. The last severe weather event that affected our region that was close to being a derecho was Sept 2, 2011. Learn more about derechoes and bow echoes from the Storm Prediction Center.
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PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LA CROSSE WI
946 PM CDT THU MAY 30 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0243 PM TSTM WND GST 1 S LANCASTER 42.83N 90.71W
05/30/2013 M70.00 MPH GRANT WI 911 CALL CENTER
IN THE ORCHARD MANOR AREA
0326 PM TSTM WND DMG 4 W GOTHAM 43.21N 90.38W
05/30/2013 RICHLAND WI EMERGENCY MNGR
TREES DOWN NEAR COUNTY LINE
0356 PM TSTM WND DMG 4 NW BIG FLATS 44.16N 89.86W
05/30/2013 ADAMS WI LAW ENFORCEMENT
TREES AND POWER LINES DOWN
0416 PM TSTM WND DMG ADAMS 43.96N 89.82W
05/30/2013 ADAMS WI 911 CALL CENTER
TREES AND POWER LINES DOWN
0427 PM TSTM WND DMG 4 SW GRAND MARSH 43.86N 89.77W
05/30/2013 ADAMS WI LAW ENFORCEMENT
TREES AND POWER LINES DOWN
0519 PM TSTM WND GST EDGEWOOD 42.65N 91.40W
05/30/2013 E50.00 MPH CLAYTON IA FIRE DEPT/RESCUE
NEARLY ZERO VISIBILITY WITH HEAVY RAIN
0543 PM TSTM WND GST LUANA 43.06N 91.46W
05/30/2013 E55.00 MPH CLAYTON IA LAW ENFORCEMENT
0543 PM TSTM WND GST 5 SE GARNAVILLO 42.82N 91.17W
05/30/2013 E60.00 MPH CLAYTON IA FIRE DEPT/RESCUE
ALONG HIGHWAY 52
0550 PM TSTM WND GST MCGREGOR 43.02N 91.18W
05/30/2013 E50.00 MPH CLAYTON IA 911 CALL CENTER
ZERO VISIBILITY WITH HEAVY RAIN
0552 PM TSTM WND GST GLEN HAVEN 42.83N 91.07W
05/30/2013 E45.00 MPH GRANT WI EMERGENCY MNGR
0559 PM TSTM WND GST 5 S EASTMAN 43.09N 91.02W
05/30/2013 E60.00 MPH CRAWFORD WI AMATEUR RADIO
0604 PM TSTM WND GST LANCASTER 42.85N 90.71W
05/30/2013 E50.00 MPH GRANT WI TRAINED SPOTTER
0620 PM TSTM WND GST MOUNT STERLING 43.31N 90.93W
05/30/2013 M30.00 MPH CRAWFORD WI AMATEUR RADIO
0.56 OF RAIN SO FAR
0620 PM TSTM WND GST BOSCOBEL 43.14N 90.70W
05/30/2013 E45.00 MPH GRANT WI AMATEUR RADIO
0625 PM TSTM WND GST 4 W VIROQUA 43.56N 90.97W
05/30/2013 E65.00 MPH VERNON WI AMATEUR RADIO
ALONG HIGHWAY 56
0646 PM TSTM WND DMG LA CROSSE 43.83N 91.23W
05/30/2013 LA CROSSE WI 911 CALL CENTER
13 INCH DIAMETER TREES DOWN ON FERRY ST BETWEEN 11TH AND
WEST AVE...AND ON 6TH STREET
...RAINFALL TOTALS ACROSS THE AREA AS OF 945 PM MAY 30... LOCATION COUNTY RAINFALL ...IOWA... DORCHESTER HWY 76 ALLAMAKEE 0.47 CHARLES CITY FLOYD 1.23 BEAVER WINONA 0.25 ELKADER CLAYTON 1.40 EL DORADO 1E FAYETTE 0.18 GARBER CLAYTON 0.85 ION ALLAMAKEE 0.71 YELLOW RIVER PARK ALLAMAKEE 0.65 LITTLEPORT CLAYTON 0.39 MCGREGOR CLAYTON 1.24 MARQUETTE CLAYTON 0.29 OELWEIN AWOS FAYETTE 0.19 ...MINNESOTA... AUSTIN 3S MOWER 0.01 BROWNSVILLE HOUSTON 0.68 BEAVER WINONA 0.25 AUSTIN 2NE MOWER 0.14 DAKOTA WINONA 0.42 LAKE CITY WABASHA 0.05 LANESBORO FILLMORE 0.85 MOUND PRAIRIE HOUSTON 0.78 KELLOGG WABASHA 0.19 ROCHESTER BEAR CR OLMSTED 0.25 ROCHESTER CASCADE CR OLMSTED 0.28 ROCHESTER SILVER CR OLMSTED 0.30 ROCHESTER BELTLINE OLMSTED 0.23 ROCHESTER ASOS OLMSTED 0.54 ...WISCONSIN... DIAMOND LAKE RAWS TAYLOR 0.54 LA CROSSE LA CROSSE 0.57 NECEDAH RAWS JUNEAU 1.05 STEUBEN CRAWFORD 2.10 ONTARIO VERNON 0.36 NEILLSVILLE CLARK 0.38 ROCKVILLE GRANT 0.51 BURTON GRANT 0.58 HILLSBORO VERNON 0.50 READSTOWN VERNON 1.11 LA CROSSE ASOS LA CROSSE 1.15 BOSCOBEL ASOS GRANT 0.86 BOSCOBEL RAWS GRANT 0.91 MONDOVI BUFFALO 0.84 NECEDAH 5WNW CRN JUNEAU 0.98 DAHLEN DAM VERNON 0.59 KLINKNER DAM VERNON 0.47 HIDDEN VALLEY DAM VERNON 0.63 SEAS BRANCH DAM VERNON 0.60 RUNGE HOLLOW DAM VERNON 0.44 SIDIE HOLLOW DAM VERNON 0.75 YTTRI DAM VERNON 0.79 THOMPSON DAM VERNON 0.67 OBSERVATIONS ARE COLLECTED FROM A VARIETY OF SOURCES WITH VARYING EQUIPMENT AND EXPOSURE. NOT ALL DATA LISTED IS CONSIDERED OFFICIAL.
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