Scattered severe thunderstorms may bring large hail and isolated damaging winds this weekend over parts of the south central U.S. Smoke from Canadian wildfires will bring air quality issues to parts of the north central U.S. this weekend. Moderate to Severe geomagnetic storm conditions will remain possible into early Monday following a strong coronal mass ejection from the sun. Read More >
Overview
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A line of thunderstorms moved east across the area during the early morning hours of Sunday, August 18. Small hail and downed trees were seen in the Cedar Rapids area and in Cedar county. A brief spin-up tornado occurred near Grand Mound, IA around 5:30 am as the storms rolled through the region. |
 Radar Loop - click to view |
Tornadoes
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Tornado - 3 SSW Grand Mound IA
Track Map  
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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 |
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Storm Reports
| Interactive Storm Report Map | SPC Storm Reports |
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PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
SUN AUG 18 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0930 AM HEAVY RAIN BELLE PLAINE 41.90N 92.28W
08/18/2019 M1.25 INCH BENTON IA TRAINED SPOTTER
0905 AM HEAVY RAIN 2 NNE STONE CITY 42.14N 91.33W
08/18/2019 M1.20 INCH JONES IA TRAINED SPOTTER
0741 AM HEAVY RAIN 2 W GENOA BLUFF 41.71N 92.18W
08/18/2019 M2.50 INCH IOWA IA TRAINED SPOTTER
0622 AM HEAVY RAIN 1 NNW CENTER POINT 42.19N 91.78W
08/18/2019 E1.24 INCH LINN IA TRAINED SPOTTER
0600 AM TSTM WND DMG 2 NNE PARK VIEW 41.71N 90.53W
08/18/2019 SCOTT IA PUBLIC
VIA SOCIAL MEDIA, NUMEROUS LIMBS DOWN IN
SCOTT COUNTY PARK BETWEEN 2 TO ALMOST INCHES
IN DIAMETER. TIME OF THE EVENT WAS ESTIMATED
USING RADAR.
0540 AM TORNADO 3 SSW GRAND MOUND 41.79N 90.66W
08/18/2019 CLINTON IA NWS STORM SURVEY
A CONVERGENT DOWNBURST OCCURRED ON WEST END
OF FARMSTEAD THAT CAUSED BRIEF SPIN UP
TORNADO ON EASTERN EDGE OF PROPERTY.
NUMEROUS TREE BRANCHES WERE DOWN WITH ONE
TREE UPROOTED. THE HOME HAD TRIM, SHINGLE
DAMAGE, AND A WINDOW BROKEN. GRASS WAS
SPLATTERED ON GARAGE AND WIND DRIVEN HAIL
ALSO NOTED ON WEST SIDE OF HOME AND GARAGE.
0530 AM HEAVY RAIN 3 NNE CEDAR RAPIDS 42.01N 91.66W 08/18/2019 M1.54 INCH LINN IA TRAINED SPOTTER 0530 AM TSTM WND DMG 2 WNW SUNBURY 41.67N 90.98W 08/18/2019 CEDAR IA TRAINED SPOTTER SPOTTER REPORTED 1 TO 2 INCH DIAMETER TREE LIMBS DOWN BETWEEN DURANT AND BENNET. THE TIME AND LOCATION WERE ESTIMATED. 0529 AM HEAVY RAIN HIAWATHA 42.05N 91.68W 08/18/2019 M1.40 INCH LINN IA TRAINED SPOTTER 1 HOUR RAINFALL. 0523 AM TSTM WND DMG TIPTON 41.77N 91.13W 08/18/2019 CEDAR IA 911 CALL CENTER SMALL TREES DOWN IN TIPTON. 0515 AM HEAVY RAIN 4 WSW GENOA BLUFF 41.70N 92.23W 08/18/2019 E2.00 INCH IOWA IA PUBLIC INTERSTATE 80 NEAR MILE MARKER 208. RAIN REPORT FROM A TOW TRUCK COMPANY. PASSED ALONG BY DOT. 0500 AM TSTM WND GST DUBUQUE REGIONAL ARPT 42.40N 90.72W 08/18/2019 M56 MPH DUBUQUE IA ASOS 0459 AM HAIL 2 SE ROBINS 42.06N 91.64W 08/18/2019 M0.88 INCH LINN IA TRAINED SPOTTER 0459 AM TSTM WND GST IOWA CITY AIRPORT 41.64N 91.55W 08/18/2019 M53 MPH JOHNSON IA ASOS 0440 AM HAIL 2 NE CEDAR RAPIDS 42.00N 91.64W 08/18/2019 M0.25 INCH LINN IA TRAINED SPOTTER TIME ESTIMATED. LESS THAN 50 MPH WIND GUSTS. 0438 AM HAIL 2 ESE HIAWATHA 42.03N 91.64W 08/18/2019 U0.25 INCH LINN IA TRAINED SPOTTER 0435 AM HAIL MARION 42.04N 91.59W 08/18/2019 E0.70 INCH LINN IA PUBLIC 0434 AM HAIL 2 WNW MARION 42.04N 91.63W 08/18/2019 M0.88 INCH LINN IA TRAINED SPOTTER DIME TO NICKEL SIZED HAIL. 0430 AM HAIL 2 SE ROBINS 42.06N 91.64W 08/18/2019 E0.75 INCH LINN IA TRAINED SPOTTER TIME ESTIMATED. 0420 AM TSTM WND DMG W CEDAR RAPIDS 41.99N 91.70W 08/18/2019 LINN IA PUBLIC SEVERAL REPORTS OF TREE DAMAGE ON THE WEST SIDE OF CEDAR RAPIDS FROM BROADCAST MEDIA AND THE PUBLIC. TIME OF THE EVENT WAS ESTIMATED BASED ON RADAR. 0411 AM HAIL URBANA 42.22N 91.88W 08/18/2019 E0.25 INCH BENTON IA PUBLIC 0408 AM HAIL URBANA 42.22N 91.88W 08/18/2019 E0.70 INCH BENTON IA TRAINED SPOTTER
Rain Reports
| Local Rain Map | Regional Rainfall |
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24 hour rainfall reports (in Inches),
Reported between Midnight and 9 AM,
Sunday August 18, 2019.
....IOWA....
Amana 4.7 W 2.15
Newton 1 NE 1.85
Central City 6.7 W 1.85
Fairfax 4.0 NW 1.81
Hopkinton 5.4 WSW 1.67
Williamsburg 1.60
Marion 1.7 NNW 1.58
Marengo 3.6 N 1.58
Cedar Rapids Arpt 5 SW 1.58
West Branch 2.0 NNW 1.55
Iowa City 1.50
Cedar Rapids 2.7 NE 1.42
Grinnell AWOS 2 SSW 1.41
Pella 4 N 1.35
Monticello 1 E 1.34
Parnell 0.1 SSW 1.30
NWS Johnston* 5 NNW 1.29
Coggon 1.29
Manchester 1.27
Center Point 0.6 NNW 1.24
Charlotte 1.9 WNW 1.10
Dubuque Arpt 7 SW 1.08
Iowa City Arpt 1.04
North Liberty 0.7 SSW 1.02
Toledo 3 N 1.01
Manchester 1.1 N 1.00
Vinton 1.00
Dubuque #3 7 SW 1.00
Anamosa 1.9 SE 0.98
Anamosa 3 SSW 0.92
Dubuque 1.4 WSW 0.90
Belle Plaine 0.85
Marshalltown 1 NW 0.84
Rathbun Reservoir 2 N 0.83
Pella AWOS 2 WSW 0.79
Ames US 30 2 SSE 0.77
Mount Auburn 2.2 NNW 0.77
Kalona 7.3 NNW 0.76
Allerton 2 S 0.75
Mason City ASOS 6 W 0.74
Tripoli 0 N 0.73
Perry 0 W 0.72
Mason City 1 NNE 0.72
Wellman 4.0 E 0.71
Strawberry Point 0.70
Sigourney 0.70
Elkader 6SSW 0.69
Dubuque LD11 0.65
Marshalltown ASOS 4 N 0.64
Bellevue LD12 0.63
Waterloo ASOS 5 NW 0.59
De Witt 0.57
Hampton 1 N 0.53
Ainsworth 7.4 N 0.53
Eldridge 0.7 SSW 0.52
Camanche 1.2 W 0.50
Fayette 1 NW 0.50
Coralville 1.3 SE 0.49
Davenport Arpt 5 N 0.48
Centerville 0 NE 0.38
Albia 3 NNE 0.38
Boone 1 SSW 0.38
Beaconsfield 1 NNE 0.36
Fairfield 0.35
Ottumwa ASOS 6 NNW 0.32
Cresco 1 NE 0.30
Muscatine 1.4 N 0.30
Davenport 0.9 WNW 0.27
Oskaloosa AWOS 9 ESE 0.27
Washington 5.8 SW 0.27
Brighton 0.24
Le Claire 1.8 NNE 0.19
Keosauqua 0.17
Salem 1S 0.16
Davenport 0.9 SSW 0.12
Bettendorf 2.2 SE 0.11
Bettendorf 1.6 WSW 0.11
Wapello 0.2 S 0.10
New London 1.5 SW 0.10
Donnellson 0.10
Keokuk LD19 0.10
Morning Sun 1.7 E 0.08
Burlington Arpt 2 SW 0.06
Burlington 6.5 SSW 0.05
Burlington 0.8 SSE 0.04
Oelwein AWOS 0.00
....ILLINOIS....
Decatur Airport 1.36
Peoria ASOS 1.34
Galena 1.04
Freeport 2.0 NW 0.86
Fulton LD13 0.73
Davis 0.5 N 0.70
Lincoln NWS 0.67
Hanover 0.2 NW 0.65
Shannon 0.2 S 0.65
New Windsor 2.0 N 0.64
Joliet 0.62
Freeport 1.7 NW 0.62
Windsor 0.60
Freeport 0.56
Minonk 0.56
Romeoville 0.55
Galesburg 0.55
Winslow 4.3 ESE 0.53
Elizabeth 0.48
Tuscola 0.45
Ottawa 4 SW 0.44
Geneseo 2.0 NW 0.42
Galesburg Arpt 3 SW 0.42
Morrison 3.2 E 0.38
Coleta 1.4 SSW 0.38
Woodhull 4.9 E 0.28
Aledo 0.26
Bloomington Airport 0.25
Ill. City LD16 3 WNW 0.25
Rochelle AWOS 0.24
St Anne 0.22
Illinois City 6.7 SW 0.21
Coal Valley 2.6 E 0.19
Jacksonville AWOS 0.16
Rockford ASOS 0.12
Gladstone LD18 0.12
Prairie City 2S 0.12
Ogden 0.11
Streator 3 SE 0.11
Quincy ASOS 0.11
Quad City Arpt 3 S 0.10
Walnut 5.3 ENE 0.10
Moline 0.7 NNE 0.09
Altona 0.08
Tiskilwa 2.1 N 0.05
Mendota 2 SE 0.05
Alexis 1 SW 0.05
Mundelein 0.04
Princeton 1.1 SE 0.03
Princeton 0.03
Coal Valley 1.9 SE 0.03
Kewanee 1 E 0.02
Roscoe 2SE 0.02
Colchester 3.5 NE 0.01
La Harpe 0.00
Steward 0.00
....MISSOURI....
Kirksville ASOS 0.47
Chillicothe 2 NW 0.34
Memphis 0.08
Columbia 0.04
....WISCONSIN....
Prairie du Chien AWOS 0.51
Steuben 4SE 3 NE 0.46
Viroqua 0.43
Madison-ASOS 0.15
La Crosse WFO 0.14
Allenton-WWTP .6 NW 0.06
Monroe 1 W 0.03
Beloit-College 0.01
Whitewater 0.01
Watertown-AWOS 0.00
....MINNESOTA....
Theilman 1SSW 0.37
Environment
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| Day 1 Outlook (0100z) | Day 1 Tornado Outlook (0100z) | Day 1 Wind Outlook (0100z) | Day 1 Hail Outlook (0100z) |
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