Severe thunderstorms and showers have the potential for large hail, a few strong tornadoes, damaging winds with gusts over 75 mph, and localized flash flooding across parts of the Mid/Upper Mississippi Valley and Midwest. A widespread heat wave will continue across the Central U.S. and Midwest today. Fire weather concerns persist in the Southwest into the central Rockies and northern California. Read More >
Overview
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Strong storms developed late Thursday evening across north central IA and moved southeast. These storms quickly became severe and entered Keokuk county. Numerous downed trees, crop damage, and large hail were reported. The northwest portions of the county received 2+ inches of rain in a short amount of time and wind gusts between 60-70 mph were also observed. |
Surface Analysis Courtesy Weather Prediction Center (WPC) |
Storm Reports
| Interactive Storm Report Map (IEM) | SPC Storm Reports |
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PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
505 PM CDT FRI AUG 27 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0938 PM TSTM WND DMG 3 N THORNBURG 41.50N 92.33W
08/26/2021 KEOKUK IA PUBLIC
LARGE TREE DOWN. VIA BROADCAST MEDIA. TIME
OF THE EVENT WAS ESTIMATED USING RADAR.
1020 PM TSTM WND DMG DELTA 41.32N 92.33W
08/26/2021 KEOKUK IA LAW ENFORCEMENT
SHERIFF OFFICE REPORTS 2 TO 3 TREES DOWN
ACROSS ROADS IN DELTA.
1025 PM TSTM WND DMG 2 N LANCASTER 41.31N 92.16W
08/26/2021 KEOKUK IA EMERGENCY MNGR
ROOF BLOWN OFF A BARN AT EM PROPERTY. TIME
ESTIMATED.
1030 PM TSTM WND GST SIGOURNEY 41.33N 92.21W
08/26/2021 M72 MPH KEOKUK IA DEPT OF HIGHWAYS
MEASURED BY IDOT RWIS.
1040 PM TSTM WND GST 2 N LANCASTER 41.31N 92.16W
08/26/2021 M72 MPH KEOKUK IA EMERGENCY MNGR
WEATHER STATION AT EM RESIDENCE.
1047 PM HAIL 1 WNW SIGOURNEY 41.34N 92.23W
08/26/2021 E1.00 INCH KEOKUK IA CO-OP OBSERVER
TIME ESTIMATED FROM RADAR, DELAYED REPORT.
1048 PM HAIL SIGOURNEY 41.33N 92.21W
08/26/2021 M1.75 INCH KEOKUK IA TRAINED SPOTTER
.
1049 PM HAIL 2 N SIGOURNEY 41.36N 92.21W
08/26/2021 M1.50 INCH KEOKUK IA TRAINED SPOTTER
MIX OF HAIL SIZES FROM PENNIES TO PING PONG
BALL.
1051 PM TSTM WND DMG SIGOURNEY 41.34N 92.22W
08/26/2021 KEOKUK IA TRAINED SPOTTER
NUMEROUS 2.5 INCH TREE LIMBS DOWN ACROSS
TOWN WITH TWO LARGE TREES DOWN. TIME OF THE
EVENT ESTIMATED USING RADAR.
1135 PM TSTM WND GST 3 SE RUBIO 41.19N 91.90W
08/26/2021 E60 MPH WASHINGTON IA LAW ENFORCEMENT
MEASURED AT LAKE DARLING STATE PARK.
0754 AM HEAVY RAIN 1 W SIGOURNEY 41.34N 92.22W
08/27/2021 M2.70 INCH KEOKUK IA TRAINED SPOTTER
RAINFALL FROM LAST EVENING.
0758 AM HEAVY RAIN WHAT CHEER 41.40N 92.35W
08/27/2021 E5.00 INCH KEOKUK IA PUBLIC
REPORTED 5.00 INCHES OF RAIN IN TWO HOURS.
Rainfall Reports
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24 hour precipitation reports (in Inches), for eastern Iowa, northwest and west central Illinois, and northeast Missouri. Reported between Midnight and 9 AM, Friday August 27, 2021. ....IOWA.... Grinnell AWOS 2 SSW 2.22 Mason City ASOS 6 W 1.60 Oskaloosa AWOS 9 ESE 1.18 Boone 1 SSW 1.09 NWS Johnston* 5 NNW 0.93 Marshalltown ASOS 4 N 0.62 Waterloo ASOS 5 NW 0.54 Marshalltown 1 NW 0.53 Mount Auburn 2.2 NNW 0.39 Independence 0.9 WNW 0.30 Marengo 2.6 SSW 0.28 Rickardsville 0.2 W 0.26 Center Point 0.6 NNW 0.21 Hopkinton 5.4 WSW 0.19 Ely 0.5 SE 0.19 Central City 6.7 W 0.14 Amana 4.7 W 0.12 Cedar Rapids 2.7 NE 0.10 Cedar Rapids 5.2 NNE 0.10 Marion 1.7 NNW 0.10 Parnell 0.1 SSW 0.10 Pella AWOS 2 WSW 0.09 Dubuque Arpt 0.09 Cedar Rapids Arpt 0.07 Marengo 3.6 N 0.07 Wellman 4.0 E 0.05 Fairfax 4.0 NW 0.05 Solon 0.3 ESE 0.05 Asbury 0.4 SW 0.03 Tipton 0.7 N 0.03 Salem 3.1 ESE 0.03 North Liberty 0.7 SSW 0.02 West Point 7.5 NW 0.00 Wapello 0.2 S 0.00 Ottumwa ASOS 6 NNW 0.00 Iowa City Arpt 0.00 Beaconsfield 1 NNE 0.00 Muscatine 2.1 N 0.00 Wapello 5.4 SE 0.00 Burlington 6.5 SSW 0.00 Davenport 0.9 WNW 0.00 Camanche 1.2 W 0.00 Morning Sun 1.7 E 0.00 Davenport Arpt 0.00 Park View 0.2 WSW 0.00 Donnellson 0.00 Charlotte 1.9 WNW 0.00 Fort Madison 0.9 NE 0.00 Burlington Arpt 0.00 Ainsworth 7.4 N 0.00 Le Claire 1.8 NNE 0.00 Calamus 2.0 NE 0.00 West Liberty 0.7 NNW 0.00 ....ILLINOIS.... Decatur Airport 0.29 Quincy ASOS 0.16 Lincoln NWS 0.02 |
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