Event Summary September 20-21, 2017

Overview

Scattered showers and thunderstorms moved across eastern Iowa, northwest Illinois, and far northeast Missouri during the evening of September 20th and the early morning of September 21st. Rainfall amounts ranged from zero at Cedar Rapids to 16 hundredths at Iowa City to 52 hundredths at Dubuque to 3.75 inches at Davenport. Rainfall amounts of 5 to 7 inches were reported in parts of Jefferson and Scott Counties. Twelve hour low temperatures ending at 7 am the morning of September 21 ranged from 64 degrees at Independence to 72 degrees at Keokuk.

Rainfall
Storm Reports
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Storm Reports

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PRELIMINARY LOCAL STORM REPORT...SUMMARY NATIONAL WEATHER SERVICE QUAD CITIES IA IL 116 PM CDT THU SEP 21 2017 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 1138 AM HEAVY RAIN 4 W MOUNT PLEASANT 40.97N 91.63W 09/21/2017 E2.70 INCH HENRY IA TRAINED SPOTTER EVENT TOTAL. 1131 AM HEAVY RAIN 3 ENE CHARLIE HEATH MEM 40.60N 91.84W 09/21/2017 M4.41 INCH CLARK MO TRAINED SPOTTER EVENT TOTAL. NO WATER ISSUES. 1118 AM HEAVY RAIN 1 W BETTENDORF 41.56N 90.49W 09/21/2017 M2.32 INCH SCOTT IA TRAINED SPOTTER EVENT TOTAL. 1100 AM HEAVY RAIN DAVENPORT MUNICIPAL AIR 41.62N 90.58W 09/21/2017 M3.83 INCH SCOTT IA OFFICIAL NWS OBS STORM TOTAL RAINFALL PAST 24 HOURS 1100 AM HEAVY RAIN MOLINE QUAD-CITY AIRPOR 41.45N 90.50W 09/21/2017 M2.26 INCH ROCK ISLAND IL OFFICIAL NWS OBS STORM TOTAL RAINFALL PAST 24 HOURS 1059 AM HEAVY RAIN 4 WNW BETTENDORF 41.58N 90.55W 09/21/2017 E6.50 INCH SCOTT IA TRAINED SPOTTER 1029 AM HEAVY RAIN 1 SSE DAVENPORT 41.54N 90.60W 09/21/2017 M4.80 INCH SCOTT IA TRAINED SPOTTER 1025 AM HEAVY RAIN W CANTRIL 40.64N 92.07W 09/21/2017 M1.90 INCH VAN BUREN IA TRAINED SPOTTER 24 HOUR TOTAL. BIGGEST RAINFALL OF THE YEAR. 1011 AM HEAVY RAIN 1 NW DAVENPORT 41.56N 90.61W 09/21/2017 M5.13 INCH SCOTT IA TRAINED SPOTTER SILVER CREEK, NEAR HIS PROPERTY, WAS RUNNING 3/4 FULL. 1009 AM HEAVY RAIN E WALCOTT 41.59N 90.78W 09/21/2017 M3.60 INCH SCOTT IA TRAINED SPOTTER 1004 AM HEAVY RAIN 5 E CANTRIL 40.64N 91.98W 09/21/2017 E3.00 INCH VAN BUREN IA TRAINED SPOTTER EVENT TOTAL. 0938 AM HEAVY RAIN BATAVIA 40.99N 92.17W 09/21/2017 E4.50 INCH JEFFERSON IA TRAINED SPOTTER EVENT TOTAL. 0933 AM HEAVY RAIN 3 ENE CHARLIE HEATH MEM 40.60N 91.84W 09/21/2017 M3.90 INCH CLARK MO TRAINED SPOTTER 0905 AM HEAVY RAIN 1 WSW SHERRARD 41.31N 90.53W 09/21/2017 E2.15 INCH MERCER IL TRAINED SPOTTER EVENT TOTAL. 0900 AM HEAVY RAIN 2 ESE KEOSAUQUA 40.72N 91.92W 09/21/2017 M2.00 INCH VAN BUREN IA TRAINED SPOTTER 0900 AM HEAVY RAIN PARK VIEW 41.69N 90.54W 09/21/2017 M3.25 INCH SCOTT IA NWS EMPLOYEE 0852 AM HEAVY RAIN 2 SSE FAIRFIELD 40.98N 91.95W 09/21/2017 M5.35 INCH JEFFERSON IA TRAINED SPOTTER 0845 AM HEAVY RAIN 1 ESE NEW LONDON 40.92N 91.40W 09/21/2017 M5.01 INCH HENRY IA TRAINED SPOTTER 0843 AM HEAVY RAIN 3 E WALCOTT 41.60N 90.72W 09/21/2017 M3.70 INCH SCOTT IA TRAINED SPOTTER EVENT TOTAL. 0813 AM HEAVY RAIN 4 W MOUNT PLEASANT 40.97N 91.63W 09/21/2017 M2.58 INCH HENRY IA TRAINED SPOTTER 0804 AM HEAVY RAIN 3 E DAVENPORT 41.56N 90.55W 09/21/2017 M3.02 INCH SCOTT IA NWS EMPLOYEE STORM TOTAL THROUGH 730 AM. 0800 AM HEAVY RAIN ELDRIDGE 41.64N 90.57W 09/21/2017 M3.38 INCH SCOTT IA NWS EMPLOYEE 24 HOUR TOTAL. STILL RAINING. 0743 AM HEAVY RAIN 3 ENE CHARLIE HEATH MEM 40.60N 91.84W 09/21/2017 M2.35 INCH CLARK MO TRAINED SPOTTER 2.10 INCHES FELL AFTER MIDNIGHT 0740 AM HEAVY RAIN 1 W BETTENDORF 41.56N 90.49W 09/21/2017 M2.25 INCH SCOTT IA TRAINED SPOTTER 0.97 FELL AFTER MIDNIGHT. 0730 AM HEAVY RAIN 3 NNW DAVENPORT 41.60N 90.63W 09/21/2017 M4.52 INCH SCOTT IA NWS EMPLOYEE PAST 12 HOURS 0730 AM HEAVY RAIN 1 SE DAVENPORT 41.54N 90.59W 09/21/2017 M4.14 INCH SCOTT IA TRAINED SPOTTER 0727 AM HEAVY RAIN 2 WSW DOWNEY 41.61N 91.39W 09/21/2017 M1.20 INCH JOHNSON IA TRAINED SPOTTER 0705 AM HEAVY RAIN 1 ESE MUSCATINE 41.41N 91.06W 09/21/2017 M3.25 INCH MUSCATINE IA TRAINED SPOTTER EVENT TOTAL SO FAR. 0702 AM HEAVY RAIN WASHINGTON 41.28N 91.67W 09/21/2017 M1.80 INCH WASHINGTON IA PUBLIC RELAYED BY KCRG 0701 AM HEAVY RAIN 1 SW DAVENPORT 41.55N 90.62W 09/21/2017 M6.53 INCH SCOTT IA TRAINED SPOTTER RAINFALL TOTAL FROM 8 PM CDT WEDNESDAY EVENING THROUGH 530 AM CDT THIS MORNING. 0649 AM HEAVY RAIN 2 NNW MUSCATINE 41.44N 91.08W 09/21/2017 M2.33 INCH MUSCATINE IA TRAINED SPOTTER 0638 AM HEAVY RAIN BUFFALO 41.46N 90.72W 09/21/2017 E6.00 INCH SCOTT IA PUBLIC PUBLIC REPORT VIA TWITTER. RELAYED BY KWQC 0627 AM HEAVY RAIN 2 SW NEW LONDON 40.91N 91.43W 09/21/2017 M3.49 INCH HENRY IA TRAINED SPOTTER 0144 AM FLASH FLOOD DAVENPORT 41.56N 90.60W 09/21/2017 SCOTT IA LAW ENFORCEMENT VEHICLES STALLED WITH WATER UP TO THE DOORS AT THE INTERSECTIONS OF FAIRMOUNT AND LOCUST STREETS, AND CLARK AVENUE AND DENISON STREET. 0109 AM HEAVY RAIN DAVENPORT MUNICIPAL AIR 41.62N 90.58W 09/21/2017 M3.35 INCH SCOTT IA OFFICIAL NWS OBS RAINFALL SINCE 7 PM. 1130 PM LIGHTNING DAVENPORT 41.56N 90.60W 09/20/2017 SCOTT IA FIRE DEPT/RESCUE FIRE DEPARTMENT RESPONDED TO 3 LIGHTNING CAUSED BUILDING FIRES WEDNESDAY NIGHT. 0853 PM HEAVY RAIN 2 SSE DAVENPORT 41.53N 90.59W 09/20/2017 M2.45 INCH SCOTT IA TRAINED SPOTTER RAINFALL OVER PAST HOUR 0850 PM TSTM WND GST 4 SSW BETTENDORF 41.52N 90.51W 09/20/2017 M50.00 MPH ROCK ISLAND IL MESONET MEASURED AT THE QUAD CITIES RWIS STATION 0846 PM HEAVY RAIN DAVENPORT 41.56N 90.60W 09/20/2017 M1.11 INCH SCOTT IA NWS EMPLOYEE RAINFALL SINCE EVENT BEGINNING 0845 PM HEAVY RAIN 5 SW DAVENPORT 41.51N 90.68W 09/20/2017 M3.48 INCH SCOTT IA TRAINED SPOTTER MEASURED NEAR HIGHWAY 280 AND HIGHWAY 61. 0836 PM TSTM WND DMG E DAVENPORT 41.56N 90.60W 09/20/2017 SCOTT IA 911 CALL CENTER LARGE TREE DOWN ON KIRKWOOD BLVD. TIME OF THE EVENT WAS ESTIMATED USING RADAR. 0835 PM HAIL LOWDEN 41.86N 90.92W 09/20/2017 M0.50 INCH CEDAR IA CO-OP OBSERVER PEA TO DIME SIZE HAIL AND HEAVY RAIN. 0820 PM HAIL 3 SSW DAVENPORT 41.52N 90.62W 09/20/2017 M0.25 INCH SCOTT IA TRAINED SPOTTER 0807 PM TSTM WND GST DAVENPORT 41.56N 90.60W 09/20/2017 M54.00 MPH SCOTT IA ASOS 0805 PM HAIL NW DAVENPORT 41.56N 90.60W 09/20/2017 M0.50 INCH SCOTT IA NWS EMPLOYEE HAIL FELL AT THE DAVENPORT MUNICIPAL AIRPORT FOR AROUND 4 MINUTES 0802 PM HAIL W DAVENPORT 41.56N 90.60W 09/20/2017 M0.75 INCH SCOTT IA NWS EMPLOYEE 0741 PM HAIL BLUE GRASS 41.51N 90.76W 09/20/2017 M0.75 INCH SCOTT IA NWS EMPLOYEE 0723 PM TSTM WND GST DEWITT 41.82N 90.55W 09/20/2017 M51.00 MPH CLINTON IA MESONET MEASURED AT THE DEWITT IOWA RWIS STATION

Rain Reports

Local Rainfall Map	Radar Estimated Rainfall Map


24 hour precipitation reports (in Inches), for eastern Iowa, northwest and west central Illinois, and northeast Missouri. Reported between Midnight and 9 AM, Thursday September 21, 2017. ....IOWA.... Davenport 0.9 SSW 6.53 Fairfield 5.81 Salem 3.1 ESE 4.65 Davenport 3.8 NNW 4.52 Davenport 0.9 WNW 4.14 Salem 1S 3.80 Davenport Arpt 3.75 Eldridge 0.6 S 3.55 Eldridge 0.6 ESE 3.44 Eldridge 0.7 SSW 3.38 Mt Pleasant 3.10 Calamus 2.0 NE 2.95 Park View 0.2 WSW 2.66 Albia 2.52 Muscatine 2N 2.37 Rathbun Reservoir 2.34 Brighton 2.30 Ottumwa ASOS 2.15 De Witt 4S 2.14 Bloomfield 2.13 Lowden 2.10 Ainsworth 7.4 N 2.09 De Witt 1.4 WNW 1.89 Donnellson 1.81 De Witt 1.65 Bettendorf 2.2 SE 1.57 Washington 1.55 Maquoketa 4W 1.45 Keosauqua 1.30 Le Claire LD14 1.25 Goose Lake 6.4 SSW 1.21 Delmar 2.3 NW 1.14 Sigourney 1.1 W 1.10 Centerville 0.88 Bellevue LD12 0.82 Le Claire 1.8 NNE 0.68 Mount Auburn 2.2 NNW 0.60 Iowa City 0.60 Dubuque Arpt 0.52 Pella 0.50 Fayette 0.48 Oskaloosa 0.48 Oskaloosa AWOS 0.44 Camanche 1.2 W 0.33 Pella AWOS 0.30 Dubuque #3 0.26 Kalona 7.3 NNW 0.24 Peosta 2.9 E 0.23 Beaconsfield 0.22 Iowa City Arpt 0.16 Marshalltown ASOS 0.12 Waterloo ASOS 0.11 Solon 0.3 ESE 0.09 Tripoli 0.08 Dubuque LD11 0.06 Burlington Arpt 0.06 Quasqueton 0.4 WSW 0.02 Marshalltown 0.02 Toledo 0.01 Oelwein AWOS 0.00 Monticello 0.00 Marion 1.2 NE 0.00 Cresco 0.00 Mason City 0.00 Marengo 0.00 Guttenberg Dam 10 0.00 Anamosa 3 SSW 0.00 Marion 1.7 NNW 0.00 Perry 0.00 Ames US 30 0.00 Cascade 0.00 Manchester 0.00 Hampton 0.00 Grinnell AWOS 0.00 Keokuk LD19 0.00 Mason City* 0.00 Parnell 0.1 SSW 0.00 Cedar Rapids 2.2 WSW 0.00 Belle Plaine 0.00 Cedar Rapids 3.4 NW 0.00 Central City 6.7 W 0.00 Mason City ASOS 0.00 Grinnell 0.00 Ely 0.5 SE 0.00 NWS Johnston* 0.00 Boone 0.00 Coggon 0.00 Amana 4.7 W 0.00 Williamsburg 0.00 Cedar Rapids Arpt 0.00 ....ILLINOIS.... Aledo 3.22 New Boston LD17 3.22 Moline 0.7 NNE 2.60 Moline 0.9 N 2.43 Moline 1.0 WNW 2.42 Milan 8.8 SSW 2.38 Ill. City LD16 2.20 Quad City Arpt 2.17 Coal Valley 1.9 SE 1.00 Geneseo 2.0 NW 0.41 Gladstone LD18 0.29 Galena 0.20 Hanover 0.2 NW 0.18 Rock Falls 0.17 New Windsor 2.0 N 0.15 Chadwick 2.7 WSW 0.10 Fulton 0.8 SSW 0.10 Atkinson 2.6 NNE 0.08 Elizabeth 0.06 Alexis 0.05 Rockford ASOS 0.05 Shannon 0.2 S 0.05 Kewanee 0.01 Freeport 2.0 NW 0.01 Roscoe 2SE 0.01 Davis 0.5 N 0.00 Freeport 0.00 Tiskilwa 2.1 N 0.00 Walnut 0.00 Windsor 0.00 Ottawa 0.00 Decatur Airport 0.00 Bentley 0.00 La Harpe 0.00 Mundelein 0.00 Romeoville 0.00 Galesburg 0.00 Rochelle AWOS 0.00 Princeton 1.1 SE 0.00 Augusta 0.00 Ogden 0.00 Princeton 0.00 Steward 0.00 Havana 0.00 Jacksonville AWOS 0.00 Dallas City 3.0 SSE 0.00 Joliet 0.00 Minonk 0.00 Quincy ASOS 0.00 Macomb 0.00 St Anne 0.00 Bloomington Airport 0.00 Tuscola 0.00 Mendota 0.00 Orangeville 2.8 NW 0.00 Warsaw 5.8 SE 0.00 Winslow 4.3 ESE 0.00 Prairie City 2S 0.00 Rochelle 0.00 Galesburg Arpt 0.00 Paw Paw 0.00 Peoria ASOS 0.00 Lincoln NWS 0.00 Altona 0.00 ....MISSOURI.... Memphis 0.22 Chillicothe 0.00 Columbia 0.00 Kirksville ASOS 0.00 ....WISCONSIN.... Allenton-WWTP 0.49 Madison-ASOS 0.39 La Crosse WFO 0.39 Viroqua 0.11 Watertown-AWOS 0.10 Sullivan-NWS 0.08 Prairie du Chien AWOS 0.05 Steuben 4SE 0.03 Darlington-2 NE 0.03 Darlington 0.00 Brodhead 0.00 Beloit-College 0.00 Whitewater 0.00 ....MINNESOTA.... Grand Meadow 0.00 Byron 4N 0.00 Theilman 1SSW 0.00

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Dangerous Heat in the Central and Southern U.S.; Thunderstorms and Heavy Rain in the Northern Plains

Event Summary September 20-21, 2017