Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >
Overview
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Scattered thunderstorms with rain, freezing rain, and sleet was seen across the area during the morning of Wednesday, April 18th; especially north and west of a line from Ottumwa to Dubuque. This resulted in slick roads and hazardous travel. Towards midday, the mixed precipitation had changed to snow north of Interstate 80. Snowfall accumulations of 1 to 3 inches were seen along and north of Highway 20. Higher amounts between 5 to 12 inches fell along the northern two tiers of counties in Iowa. Meanwhile, areas south of I-80 only saw rain from this storm system. Temperatures were only in the 30s to lower 40s; which is about 25-30 degrees below normal for late April. |
Weather Prediction Center Fronts/Pressure Loop  |
Snow/Ice/Hail
| Local Snowfall | Regional Snowfall | Iowa Snowfall (Totals through 4/18 820 pm) |
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Photos
| Sleet near US 20 MM 277 @ Manchester, IA (IA DOT) |
US 20 near Manchester 7:30 pm (IA DOT) |
US 151 N (IA DOT) |
US 61 Central Jackson County (IA DOT) |
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| Interactive Storm Report Map |
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PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
921 PM CDT WED APR 18 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0818 PM SNOW 4 WNW FOUNTAIN SPRINGS 42.64N 91.40W
04/18/2018 M2.5 INCH DELAWARE IA TRAINED SPOTTER
STORM TOTAL.
0802 PM SNOW 1 NW CENTER GROVE 42.49N 90.73W
04/18/2018 E2.5 INCH DUBUQUE IA TRAINED SPOTTER
VERY WET SNOW.
0711 PM SNOW DUBUQUE REGIONAL ARPT 42.41N 90.73W
04/18/2018 M2.0 INCH DUBUQUE IA OFFICIAL NWS OBS
1.5" IN PAST 6 HRS. 0.5" SLEET THIS MORNING.
0708 PM SNOW JESUP 42.48N 92.07W
04/18/2018 M3.0 INCH BUCHANAN IA TRAINED SPOTTER
0642 PM SNOW 5 N DYSART 42.24N 92.30W
04/18/2018 M1.5 INCH BENTON IA PUBLIC
SNOW ENDING.
0528 PM SNOW 2 ENE HAZLETON 42.63N 91.86W
04/18/2018 M2.0 INCH BUCHANAN IA CO-OP OBSERVER
1213 PM FREEZING RAIN MILLEDGEVILLE 41.97N 89.78W
04/18/2018 M0.10 INCH CARROLL IL TRAINED SPOTTER
ACCUMULATION WAS ON ELEVATED SURFACES.
1010 AM HAIL PEARL CITY 42.27N 89.83W
04/18/2018 E0.25 INCH STEPHENSON IL EMERGENCY MNGR
1002 AM HAIL 2 SW DAVENPORT MUNICIPA 41.59N 90.61W
04/18/2018 E0.25 INCH SCOTT IA PUBLIC
HAIL LASTED ABOUT TWO MINUTES IN RIDGEVIEW
(NW DAVENPORT).
0911 AM HAIL 1 NNE BUDD 42.55N 90.81W
04/18/2018 E0.25 INCH DUBUQUE IA TRAINED SPOTTER
PEA TO 1/8 AN INCH SIZE HAIL. BEGAN AT 9AM.
STARTING TO ACCUMULATE ON THE GRASS.
0855 AM HAIL ANAMOSA 42.12N 91.28W
04/18/2018 E0.25 INCH JONES IA PUBLIC
HAIL BEGAN AS PEA SIZED BUT IT NOW ABOUT AN
1/8 OF AN INCH. HAIL IS COVERING THE GROUND.
0826 AM HAIL 2 NNE CEDAR RAPIDS 42.01N 91.66W
04/18/2018 E0.25 INCH LINN IA TRAINED SPOTTER
JUST STARTED.
0750 AM HAIL 2 ENE CEDAR RAPIDS 42.06N 91.57W
04/18/2018 E0.25 INCH LINN IA PUBLIC
0737 AM HAIL 1 E INDEPENDENCE 42.47N 91.88W
04/18/2018 E0.25 INCH BUCHANAN IA PUBLIC
PEA SIZED HAIL, SWITCHING TO ALL RAIN, AND
NOW SLEET IN INDEPENDENCE. EAST SIDE OF
INDEPENDENCE.
0731 AM HAIL 1 NNW SHELLSBURG 42.11N 91.88W
04/18/2018 E0.25 INCH BENTON IA TRAINED SPOTTER
JUST BEGAN.
0718 AM HAIL INDEPENDENCE 42.47N 91.89W
04/18/2018 E0.25 INCH BUCHANAN IA TRAINED SPOTTER
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Rain Reports
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Environment
| Davenport, IA Sounding 7 AM 4/18/2018 |
Davenport, IA Sounding 7 PM 4/18/2018 |
Weather Prediction Center - Surface Low Tracks (with uncertainty circles) |
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