Deep tropical moisture will lead to widespread showers and thunderstorms capable of producing flash flooding through early next week over the Southwest and Four Corners. A coastal storm is expected to develop off the southeast U.S. coast tonight and is expected to strengthen and bring flooding, dangerous rip currents, gusty winds and heavy rain up much of the East Coast through early next week. Read More >
Overview
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An early season winter storm lead to widespread snowfall throughout the area, with totals around 4-6 inches northwest of a line from Iowa City to Freeport, IL. Closer to Dubuque, totals reached upwards to 8 inches.
The snow started out as rain, as there was a strong pull of warm and moist air into the area. This rain lasted until around 6:00pm on 12/11, when it started transitioning to snow in our northern part of the CWA. By 6:00am on 12/12, the snow made its way to the Quad Cities area and quickly spread into northwestern IL. The snow was heavy at times, especially right around the area where the rain was transitioning to snow. Visibilities in the heaviest bands were around a 1/2 mile or less.
Official National Weather Service Observations Moline: 3.2" Davenport: 1.5" Dubuque: 9.4" ***Cedar Rapids, Iowa City and Burlington do not measure snow as part of their climate records. Please see the Snowfall Amounts and Storm Reports sections for reported snow amounts in these locations.*** |
 WPC - Surface Map and Radar Loop |
Snowfall Amounts
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Storm Reports
Storm Reports Map - Courtesy IEM
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PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
233 PM CST SAT DEC 12 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0900 PM SNOW 2 WNW FREEPORT 42.30N 89.66W
12/11/2020 M2.3 INCH STEPHENSON IL TRAINED SPOTTER
THIS UPDATES THE SNOWFALL TOTAL OF 1.5
INCHES REPORTED EARLIER THIS MORNING.
0345 AM SNOW 3 E CEDAR RAPIDS 41.97N 91.61W
12/12/2020 M3.5 INCH LINN IA BROADCAST MEDIA
SNOWFALL TOTAL AS OF 345 AM. AVERAGE YARD
MEASUREMENT.
0553 AM SNOW 1 E DUBUQUE REGIONAL AR 42.40N 90.70W
12/12/2020 M5.1 INCH DUBUQUE IA ASOS
ASOS STATION KDBQ DUBUQUE ARPT.
0600 AM SNOW 2 ENE DUBUQUE 42.52N 90.65W
12/12/2020 M1.0 INCH DUBUQUE IA MESONET
MESONET STATION DLDI4 1.8 NW EAST DUBUQUE.
0600 AM SNOW RICKARDSVILLE 42.58N 90.88W
12/12/2020 M1.9 INCH DUBUQUE IA TRAINED SPOTTER
SNOWFALL TOTAL AS OF 6 AM, SNOW WAS STILL
FALLING WHEN TAKING MEASUREMENT.
0630 AM SNOW ELIZABETH 42.32N 90.23W
12/12/2020 M2.0 INCH JO DAVIESS IL CO-OP OBSERVER
CO-OP OBSERVER STATION EZBI2 ELIZABETH.
0700 AM SNOW 2 SSW HIAWATHA 42.02N 91.70W
12/12/2020 M2.2 INCH LINN IA TRAINED SPOTTER
STILL SNOWING, BUT THIS WAS MOST RECENT
MEASUREMENT.
0729 AM SNOW 1 NNE MOLINE 41.49N 90.48W
12/12/2020 M2.0 INCH ROCK ISLAND IL NWS EMPLOYEE
CURRENT MEASURED SNOWFALL.
0736 AM SNOW LOWDEN 41.86N 90.92W
12/12/2020 M2.3 INCH CEDAR IA CO-OP OBSERVER
CURRENT ACCUMULATED SNOWFALL IN LAST 24
HOURS.
0757 AM SNOW TIFFIN 41.71N 91.68W
12/12/2020 M4.0 INCH JOHNSON IA PUBLIC
CORRECTS PREVIOUS SNOW REPORT FROM TIFFIN.
SOCIAL MEDIA REPORT, SNOW STILL FALLING.
0804 AM SNOW 2 NNW MUSCATINE 41.44N 91.08W
12/12/2020 M1.4 INCH MUSCATINE IA TRAINED SPOTTER
HEAVY WET SNOW, STILL FALLING.
0814 AM SNOW NORTH LIBERTY 41.74N 91.61W
12/12/2020 M4.0 INCH JOHNSON IA PUBLIC
SOCIAL MEDIA REPORT.
0831 AM SNOW 1 NE KALONA 41.50N 91.69W
12/12/2020 M2.0 INCH WASHINGTON IA PUBLIC
SOCIAL MEDIA REPORT.
0831 AM SNOW 1 SW CEDAR RAPIDS 41.96N 91.68W
12/12/2020 M5.5 INCH LINN IA PUBLIC
SOCIAL MEDIA REPORT.
0835 AM SNOW 3 E DAVENPORT 41.55N 90.55W
12/12/2020 M1.0 INCH SCOTT IA PUBLIC
CURRENT SNOWFALL, STILL SNOWING.
0849 AM SNOW 2 SE GALENA TERRITORY 42.38N 90.31W
12/12/2020 M4.2 INCH JO DAVIESS IL TRAINED SPOTTER
CURRENT SNOWFALL TOTAL.
0850 AM SNOW 1 SSW COAL VALLEY 41.43N 90.46W
12/12/2020 M3.8 INCH ROCK ISLAND IL PUBLIC
SOCIAL MEDIA REPORT.
0852 AM SNOW GENESEO 41.45N 90.15W
12/12/2020 M3.3 INCH HENRY IL PUBLIC
SOCIAL MEDIA REPORT.
0858 AM SNOW UNIVERSITY HEIGHTS 41.65N 91.55W
12/12/2020 E2.8 INCH JOHNSON IA TRAINED SPOTTER
STILL SNWOING.
0859 AM SNOW 1 E TIFFIN 41.71N 91.66W
12/12/2020 M6.3 INCH JOHNSON IA PUBLIC
SOCIAL MEDIA REPORT.
0904 AM SNOW 2 S MC CONNELL 42.40N 89.74W
12/12/2020 M2.8 INCH STEPHENSON IL TRAINED SPOTTER
SOCIAL MEDIA REPORT, STILL SNOWING.
0908 AM SNOW 2 NNW NORTH LIBERTY 41.76N 91.62W
12/12/2020 M3.0 INCH JOHNSON IA TRAINED SPOTTER
0909 AM SNOW ALBURNETT 42.15N 91.62W
12/12/2020 M5.5 INCH LINN IA PUBLIC
SOCIAL MEDIA.
0911 AM SNOW 3 W CEDAR RAPIDS 41.97N 91.73W
12/12/2020 M4.0 INCH LINN IA TRAINED SPOTTER
0912 AM SNOW 2 E IOWA CITY 41.66N 91.49W
12/12/2020 M3.0 INCH JOHNSON IA TRAINED SPOTTER
0919 AM SNOW 2 SSE WARNER 41.39N 90.37W
12/12/2020 M5.0 INCH HENRY IL TRAINED SPOTTER
0920 AM SNOW MAQUOKETA 42.07N 90.67W
12/12/2020 M5.0 INCH JACKSON IA PUBLIC
SOCIAL MEDIA REPORT.
0925 AM SNOW EPWORTH 42.45N 90.93W
12/12/2020 M7.8 INCH DUBUQUE IA PUBLIC
0936 AM SNOW 1 ESE NORTH LIBERTY 41.74N 91.59W
12/12/2020 M3.5 INCH JOHNSON IA TRAINED SPOTTER
0938 AM SNOW FREEPORT 42.28N 89.63W
12/12/2020 M3.0 INCH STEPHENSON IL TRAINED SPOTTER
0939 AM SNOW 2 WSW HIAWATHA 42.03N 91.72W
12/12/2020 M3.7 INCH LINN IA TRAINED SPOTTER
0940 AM SNOW HOPKINTON 42.34N 91.25W
12/12/2020 M5.3 INCH DELAWARE IA PUBLIC
0942 AM SNOW 1 NNE IOWA CITY 41.67N 91.53W
12/12/2020 M3.0 INCH JOHNSON IA PUBLIC
0946 AM SNOW 1 ENE NORTH ENGLISH 41.52N 92.06W
12/12/2020 M2.0 INCH IOWA IA CO-OP OBSERVER
1000 AM SNOW CENTER POINT 42.19N 91.78W
12/12/2020 E2.5 INCH LINN IA PUBLIC
RELAYED BY LOCAL BROADCAST MEDIA.
1006 AM SNOW 1 NW CEDAR RAPIDS 41.99N 91.68W
12/12/2020 M5.0 INCH LINN IA PUBLIC
RELAYED BY BROADCAST MEDIA.
1008 AM SNOW NORA 42.46N 89.94W
12/12/2020 M6.8 INCH JO DAVIESS IL TRAINED SPOTTER
1012 AM SNOW DURANT 41.60N 90.91W
12/12/2020 M2.0 INCH CEDAR IA TRAINED SPOTTER
1012 AM SNOW 1 SSW VINTON 42.15N 92.03W
12/12/2020 M5.0 INCH BENTON IA TRAINED SPOTTER
1016 AM SNOW HILLS 41.57N 91.54W
12/12/2020 M3.5 INCH JOHNSON IA PUBLIC
RELAYED BY BROADCAST MEDIA.
1022 AM SNOW MARION 42.04N 91.59W
12/12/2020 M3.2 INCH LINN IA PUBLIC
1024 AM SNOW 3 N STOCKTON 42.40N 90.00W
12/12/2020 M6.2 INCH JO DAVIESS IL CO-OP OBSERVER
1026 AM SNOW 1 WNW MARION 42.04N 91.62W
12/12/2020 M3.2 INCH LINN IA TRAINED SPOTTER
1039 AM SNOW 2 NW CEDAR RAPIDS 41.99N 91.70W
12/12/2020 M4.5 INCH LINN IA BROADCAST MEDIA
1040 AM SNOW FULTON 41.86N 90.16W
12/12/2020 M1.0 INCH WHITESIDE IL TRAINED SPOTTER
1040 AM SNOW 1 E IOWA CITY 41.66N 91.52W
12/12/2020 M4.0 INCH JOHNSON IA PUBLIC
SOCIAL MEDIA REPORT.
1043 AM SNOW SHARON CENTER 41.57N 91.66W
12/12/2020 M3.0 INCH JOHNSON IA PUBLIC
SOCIAL MEDIA REPORT.
1048 AM SNOW 1 NW CENTER GROVE 42.49N 90.73W
12/12/2020 M4.0 INCH DUBUQUE IA TRAINED SPOTTER
1048 AM SNOW 1 NE MANCHESTER 42.50N 91.44W
12/12/2020 M2.5 INCH DELAWARE IA TRAINED SPOTTER
1059 AM SNOW 1 E FREEPORT 42.29N 89.62W
12/12/2020 M1.0 INCH STEPHENSON IL PUBLIC
1101 AM SNOW 1 W ELMIRA 41.72N 91.44W
12/12/2020 M4.0 INCH JOHNSON IA TRAINED SPOTTER
1102 AM SNOW 1 SW UNIVERSITY HEIGHTS 41.65N 91.57W
12/12/2020 M4.0 INCH JOHNSON IA TRAINED SPOTTER
1109 AM SNOW 2 ENE HAZLETON 42.63N 91.86W
12/12/2020 M2.0 INCH BUCHANAN IA CO-OP OBSERVER
1111 AM SNOW 1 N MUSCATINE 41.43N 91.07W
12/12/2020 M3.5 INCH MUSCATINE IA PUBLIC
SNOWFALL TOTAL BEFORE MELTING, REPORTED ON
SOCIAL MEDIA.
1112 AM SNOW EAST MOLINE 41.51N 90.43W
12/12/2020 M4.0 INCH ROCK ISLAND IL PUBLIC
1115 AM SNOW 1 NW ORION 41.36N 90.38W
12/12/2020 M2.3 INCH HENRY IL PUBLIC
SOCIAL MEDIA REPORT.
1118 AM SNOW 1 ENE DUBUQUE 42.51N 90.67W
12/12/2020 M7.0 INCH DUBUQUE IA PUBLIC
SOCIAL MEDIA REPORT.
1130 AM SNOW 1 S HIAWATHA 42.03N 91.68W
12/12/2020 M3.5 INCH LINN IA TRAINED SPOTTER
1133 AM SNOW CASCADE 42.30N 91.01W
12/12/2020 M2.5 INCH DUBUQUE IA PUBLIC
RELAYED BY BROADCAST MEDIA.
1134 AM SNOW KALONA 41.49N 91.70W
12/12/2020 M4.0 INCH WASHINGTON IA PUBLIC
RELAYED BY BROADCAST MEDIA.
1140 AM SNOW 2 W CEDAR RAPIDS 41.98N 91.71W
12/12/2020 M4.0 INCH LINN IA TRAINED SPOTTER
1144 AM SNOW LISBON 41.92N 91.39W
12/12/2020 M2.8 INCH LINN IA TRAINED SPOTTER
1209 PM SNOW 2 W BETTENDORF 41.57N 90.51W
12/12/2020 M1.6 INCH SCOTT IA NWS EMPLOYEE
1234 PM HEAVY SNOW 1 NW DUBUQUE REGIONAL A 42.41N 90.73W
12/12/2020 M9.4 INCH DUBUQUE IA OFFICIAL NWS OBS
STORM TOTAL SNOWFALL. AN ADDITIONAL 4.3
INCHES FELL BETWEEN 6 AM AND NOON.
1235 PM SNOW MOLINE QUAD CIITIE REGI 41.40N 90.55W
12/12/2020 M3.2 INCH ROCK ISLAND IL OFFICIAL NWS OBS
STORM TOTAL THROUGH NOON.
1236 PM SNOW DAVENPORT MUNICIPALITY 41.61N 90.58W
12/12/2020 M1.5 INCH SCOTT IA OFFICIAL NWS OBS
STORM TOTAL SNOWFALL.
1248 PM SNOW 2 SSW WILLIAMSTOWN 41.54N 91.74W
12/12/2020 E4.0 INCH JOHNSON IA TRAINED SPOTTER
SNOW TOTAL.
1252 PM SNOW STANWOOD 41.89N 91.15W
12/12/2020 M1.6 INCH CEDAR IA TRAINED SPOTTER
SNOW TOTAL.
1253 PM SNOW 1 ENE MONTPELIER 41.47N 90.78W
12/12/2020 M2.1 INCH SCOTT IA TRAINED SPOTTER
SNOW TOTAL.
1254 PM SNOW DEWITT 41.82N 90.55W
12/12/2020 M1.0 INCH CLINTON IA NWS EMPLOYEE
SNOW TOTAL.
1256 PM SNOW PARNELL 41.58N 92.01W
12/12/2020 E1.8 INCH IOWA IA TRAINED SPOTTER
STORM TOTAL SNOWFALL.
1256 PM SNOW INDEPENDENCE 42.47N 91.89W
12/12/2020 M2.0 INCH BUCHANAN IA PUBLIC
RELAYED BY BROADCAST MEDIA.
1257 PM SNOW CORALVILLE 41.69N 91.60W
12/12/2020 M4.2 INCH JOHNSON IA PUBLIC
0157 PM SNOW 2 NNE CEDAR RAPIDS 42.00N 91.66W
12/12/2020 E2.0 INCH LINN IA TRAINED SPOTTER
SNOW TOTAL.
0158 PM SNOW 2 WSW CEDAR RAPIDS 41.96N 91.70W
12/12/2020 M2.1 INCH LINN IA TRAINED SPOTTER
SNOW TOTAL.
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