Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Overview

Showers and thunderstorms moved northeast across parts of northern Illinois on the afternoon and evening of Monday, October 11, 2021. A Storm Chaser reported a brief tornado west of McNabb, IL. There was no visible damage to assign an EF-scale rating.

Tornado
Radar
Storm Reports
Rainfall
Environment

Tornadoes:

Tornado - 4 SSW FLORID, IL
PUTNAM COUNTY

Date	10/11/2021
Time (Local)	5:47 PM CDT
EF Rating	EF-U
Est. Peak Winds	Unknown
Path Length	0.02 miles (estimated)
Max Width	10 yards (estimated)
Injuries/Deaths	0 / 0
Summary: A Storm Chaser reported a brief tornado. There was no visible damage to assign an EF-scale rating.

Track Map

The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:

EF0 Weak 65-85 mph	EF1 Moderate 86-110 mph	EF2 Significant 111-135 mph	EF3 Severe 136-165 mph	EF4 Extreme 166-200 mph	EF5 Catastrophic 200+ mph

Radar

Radar Loop
Courtesy IEM

Storm Reports

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
252 PM CDT TUE OCT 12 2021

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

0301 PM     HEAVY RAIN       1 W MORRISON            41.81N 89.98W
10/11/2021  M1.50 INCH       WHITESIDE          IL   TRAINED SPOTTER  

            SINCE LAST EVENING. 

0823 AM     HEAVY RAIN       3 ENE GARDEN PLAIN      41.81N 90.08W
10/12/2021  M1.50 INCH       WHITESIDE          IL   TRAINED SPOTTER  

            RAINFALL TOTAL YESTERDAY. 

0650 AM     HEAVY RAIN       3 SW WINNESHIEK         42.32N 89.57W
10/12/2021  M1.20 INCH       STEPHENSON         IL   TRAINED SPOTTER  

            24 HOUR TOTAL. 

0547 PM     TORNADO          4 SSW FLORID            41.18N 89.31W
10/11/2021                   PUTNAM             IL   STORM CHASER     

            DELAYED REPORT. BRIEF TOUCH DOWN WITH NO 
            VISIBLE DAMAGE. 

0500 PM     HEAVY RAIN       BUSHNELL                40.56N 90.51W
10/11/2021  M1.78 INCH       MCDONOUGH          IL   TRAINED SPOTTER  

            TOTAL THROUGH 5 PM. 

0922 PM     HEAVY RAIN       CAMBRIDGE               41.30N 90.20W
10/11/2021  M1.07 INCH       HENRY              IL   TRAINED SPOTTER  

            SO FAR. 

0554 PM     HEAVY RAIN       AUGUSTA                 40.23N 90.95W
10/11/2021  M2.32 INCH       HANCOCK            IL   CO-OP OBSERVER   

            TOTAL SINCE 530 AM. 

0600 AM     HEAVY RAIN       2 NNE COLUSA            40.59N 91.15W
10/12/2021  M1.43 INCH       HANCOCK            IL   PUBLIC           

            DELAYED REPORT. 24 HOUR TOTAL AS OF 6 AM. 

0820 AM     HEAVY RAIN       CARTHAGE                40.41N 91.13W
10/12/2021  M1.75 INCH       HANCOCK            IL   TRAINED SPOTTER  

             

0338 PM     HEAVY RAIN       3 W MOUNT STERLING      40.62N 92.00W
10/11/2021  M1.20 INCH       VAN BUREN          IA   TRAINED SPOTTER  

            SINCE LAST NIGHT. 

0302 PM     HEAVY RAIN       3 NNE CEDAR RAPIDS      42.01N 91.66W
10/11/2021  M1.49 INCH       LINN               IA   TRAINED SPOTTER  

            SINCE MIDNIGHT. 

0325 PM     HEAVY RAIN       HIAWATHA                42.04N 91.69W
10/11/2021  M2.00 INCH       LINN               IA   PUBLIC           

            OVER THE PAST 48 HOURS. 

0405 PM     HEAVY RAIN       2 WSW CEDAR RAPIDS      41.96N 91.70W
10/11/2021  M1.50 INCH       LINN               IA   TRAINED SPOTTER  

            SO FAR. 

0931 PM     HEAVY RAIN       KEOKUK                  40.41N 91.41W
10/11/2021  M2.20 INCH       LEE                IA   TRAINED SPOTTER  

            24 HOUR AMOUNT. 

0609 PM     HEAVY RAIN       2 NNW NORTH LIBERTY     41.76N 91.62W
10/11/2021  M1.31 INCH       JOHNSON            IA   TRAINED SPOTTER  

            OVER THE PAST 24 HOURS. 

0248 PM     HEAVY RAIN       1 SW PERLEE             41.07N 91.92W
10/12/2021  M1.30 INCH       JEFFERSON          IA   TRAINED SPOTTER  

            DELAYED REPORT. TOTAL FOR THE LAST RAIN 
            EVENT. 

0530 PM     HEAVY RAIN       JESUP                   42.48N 92.07W
10/11/2021  M1.00 INCH       BUCHANAN           IA   PUBLIC           

             


&&

$$

Rain Reports

24 hour precipitation reports (in Inches),
for eastern Iowa, northwest and west central Illinois,
and northeast Missouri.

Reported between Midnight and 9 AM,
Tuesday October 12, 2021.

....IOWA....
Rathbun Reservoir 2 N 1.90
Beaconsfield 1 NNE 1.86
Guttenberg Dam 10 1.74
Keokuk LD19 1.74
Wellman 4.0 E 1.46
Sigourney 1.34
Cedar Rapids 2.7 NE 1.23
Fort Madison 0.9 NE 1.23
Burlington 6.5 SSW 1.14
Burlington Arpt 1.12
Manchester 1.12
Cedar Rapids Arpt 1.11
Marion 1.7 NNW 1.05
Center Point 0.6 NNW 0.99
Ely 0.5 SE 0.93
Fairfield 0.90
North Liberty 0.7 SSW 0.87
West Branch 2.0 NNW 0.87
Coralville 1.3 SE 0.84
West Liberty 0.7 NNW 0.83
Bellevue LD12 0.80
Mount Auburn 2.2 NNW 0.80
Washington 0.78
Elkader 6SSW 0.75
Strawberry Point 0.75
Washington 5.8 SW 0.75
Marshalltown 1 NW 0.72
Cedar Rapids 5.2 NNE 0.70
Iowa City Arpt 0.65
Fayette 1 NW 0.65
Central City 6.7 W 0.65
Parnell 0.1 SSW 0.64
Oskaloosa 1 NNW 0.63
Marshalltown ASOS 4 N 0.62
Maquoketa 0.62
Wapello 5.4 SE 0.60
Marengo 3.6 N 0.60
Davenport 0.9 WNW 0.60
De Witt 0.60
Park View 0.2 WSW 0.59
Solon 0.3 ESE 0.58
Charlotte 1.9 WNW 0.58
Eldridge 0.6 S 0.57
Le Claire LD14 0.57
Davenport Arpt 0.56
Dubuque Arpt 0.56
Camanche 1.2 W 0.56
Fairfax 4.0 NW 0.54
Anamosa 3 SSW 0.54
Dubuque LD11 0.50
Iowa City 0.50
Vinton 0.50
Muscatine 2.1 N 0.48
Muscatine 2N 0.48
Calamus 2.0 NE 0.47
Grinnell AWOS 2 SSW 0.46
Salem 3.1 ESE 0.45
Williamsburg 0.45
Marengo 2.6 SSW 0.44
Ainsworth 7.4 N 0.44
Le Claire 1.8 NNE 0.44
Salem 1S 0.43
Ottumwa ASOS 6 NNW 0.43
Donnellson 0.43
Pella 4 N 0.41
Marengo 0.41
Mediapolis 0.2 WNW 0.41
West Point 7.5 NW 0.40
Waterloo ASOS 5 NW 0.38
Tipton 0.7 N 0.37
Keosauqua 0.35
Monticello 1 E 0.31
Dubuque #3 7 SW 0.31
Stanley 0.28
Independence 0.9 WNW 0.26
Morning Sun 1.7 E 0.25
Mt Pleasant 1 SSW 0.24
Peosta 2.9 E 0.21
Newton 1 NE 0.20
Asbury 0.4 SW 0.14
Ames US 30 2 SSE 0.13
Centerville 0 NE 0.11
Oskaloosa AWOS 9 ESE 0.11
NWS Johnston* 5 NNW 0.10
Pella AWOS 2 WSW 0.05
Hampton 1 N 0.04
Oelwein AWOS 0.04
Perry 0 W 0.00
Boone 1 SSW 0.00
Mason City 1 NNE 0.00
Mason City ASOS 6 W 0.00
....ILLINOIS....
Rock Falls 2.88
Augusta 2.32
Altona 2.23
Atkinson 2.6 NNE 2.07
Galesburg 2.00
Prairie City 2S 1.67
Galva 2.7 NE 1.63
Kewanee 1 E 1.61
Freeport 1.58
Jacksonville 2E 1.46
Woodhull 0.3 ESE 1.45
Dallas City 3.0 SSE 1.43
Colchester 3.5 NE 1.41
Coleta 1.4 SSW 1.40
Freeport 1.7 NW 1.34
Warsaw 5.8 SE 1.34
New Windsor 2.0 N 1.19
Davis 0.5 N 1.15
Geneseo 2.0 NW 1.14
Gladstone LD18 1.13
Streator 3 SE 1.13
Ottawa 4 SW 1.11
Tuscola 1.11
Lincoln NWS 1.09
Morrison 3.2 E 1.07
Jacksonville AWOS 1.02
Mundelein 0.98
Winslow 4.3 ESE 0.98
Peoria ASOS 0.96
Princeton 1.1 SE 0.92
Princeton 0.92
Stronghurst 0.4 SSW 0.92
Ogden 0.85
Oquawka 0.5 N 0.78
Mendota 2 SE 0.76
Moline 0.7 NNE 0.76
La Harpe 0.75
Quincy ASOS 0.74
Aledo 0.72
Romeoville 0.72
Fulton LD13 0.71
Paw Paw 1 E 0.70
Bloomington Airport 0.70
Quad City Arpt 0.69
Coal Valley 1.9 SE 0.68
Decatur Airport 0.67
St Anne 0.67
Coal Valley 2.6 E 0.59
Stockton 3.4 NNE 0.59
Windsor 0.57
Mount Carroll 6.8 NNW 0.55
Joliet 0.55
Rockford ASOS 0.52
New Boston LD17 0.50
Ill. City LD16 3 WNW 0.50
Elizabeth 0.42
Rochelle AWOS 0.39
Steward 0.35
Mount Carroll 0.16
....MISSOURI....
Kahoka 0.6 S 0.82
Chillicothe 2 NW 0.49
Columbia 0.47
Arbela 2.7 ENE 0.45
Memphis 0.25
Kirksville ASOS 0.23
....WISCONSIN....
Beloit-College 1.21
Allenton-WWTP .6 NW 1.12
Brodhead 1 SW 1.08
Monroe 1 W 0.80
Darlington 0.53
Madison-ASOS 0.50
Delavan-1 W-WWTP 1 W 0.45
Prairie du Chien AWOS 0.32
Viroqua 0.19
Sullivan-NWS 2 SE 0.14
Steuben 4SE 3 NE 0.14
Watertown-AWOS 0.00
....MINNESOTA....
Preston 0.00
Theilman 1SSW 0.00

Environment


Mesoscale Discussion 1831	Mesoscale Discussion 1832	Mesoscale Discussion 1833	Mesoscale Discussion 1835



	Lincoln, IL - 3pm 10/11/21	Davenport, IA - 7pm 10/11/21

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Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Event Summary: October 11, 2021