Event Summary: August 5, 2019

Overview

A line of thunderstorms moved south southeast across the region during the late evening hours of Monday, August 5, 2019. These storms mainly produced wind gusts of 40 to 55 MPH, frequent lightning, and brief torrential rains. An isolated tornado touched down west of the Dubuque Airport at 1007 PM. Later, around 1040 PM, tree damage occurred in Cedar Rapids.

Radar and Surface Map

Tornado
Radar
Storm Reports
Rainfall
Environment

Tornadoes:

Tornado - 3 WSW Dubuque Airport
Dubuque COUNTY

Date	8/05/2019
Time (Local)	1007 PM CDT TO 1008 PM CDT
EF Rating	EF-1
Est. Peak Winds	100 mph
Path Length	0.3 miles
Max Width	50 yards
Injuries/Deaths	0 / 0
Summary: BRIEF EF1 TORNADO TOUCHED DOWN SOUTHWEST OF DUBUQUE AND CAUSED DAMAGE TO CORN, TREES AND HOUSES ALONG ITS THREE TENTHS OF A MILE PATH. AT THE WIDEST, THE TORNADO WAS 50 YARDS WIDE. TWO HOUSES HAD PARTIAL ROOFS REMOVED AND ANOTHER SUFFERED A HIT FROM THE CROWN OF A PINE TREE THAT BOWED IN THE SIDE OF THE HOUSE. PEAK ESTIMATED WINDS WERE 100 MPH.

Track Map
KMZ File

	NWS Storm Damage Survey Pictures

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

Radar

RADAR LOOP

Storm Reports

Interactive Storm Report Map	Event Review SPC

Rain Reports

Local Rainfall	Regional Rainfall


24 hour precipitation reports (in Inches), for eastern Iowa, northwest and west central Illinois, and northeast Missouri. Reported between Midnight and 9 AM, Tuesday August 06, 2019. ....IOWA.... Stanley 1.68 Oelwein 1E 1.47 Tripoli 0 N 1.23 Hampton 1 N 1.18 Independence 0.9 WNW 1.16 Marion 1.7 NNW 1.16 Muscatine 1.4 N 1.15 Center Point 0.6 NNW 1.10 Guttenberg Dam 10 1.06 West Branch 2.0 NNW 1.06 North Liberty 0.7 SSW 1.05 Muscatine 2N 1.05 Dubuque 1.4 WSW 1.04 Dubuque LD11 0.97 Mount Auburn 2.2 NNW 0.89 Cedar Rapids Arpt 5 SW 0.89 Monticello 1 E 0.89 Nichols 3.2 SSW 0.85 Burlington 6.5 SSW 0.85 Central City 6.7 W 0.84 Fairfax 4.0 NW 0.83 Cedar Rapids 2.7 NE 0.83 Cresco 1 NE 0.79 Tiffin 1.8 SW 0.79 Manchester 1.1 N 0.77 Dubuque Arpt 7 SW 0.77 Dubuque #3 7 SW 0.77 Washington 5.8 SW 0.77 Coggon 0.75 Manchester 0.74 Elkader 6SSW 0.73 Asbury 0.4 SW 0.73 Waterloo ASOS 5 NW 0.73 Burlington Arpt 2 SW 0.72 Solon 0.3 ESE 0.72 Cascade 0.72 Rickardsville 0.2 W 0.67 Wapello 0.2 S 0.64 Peosta 2.9 E 0.63 Bellevue LD12 0.62 Kalona 7.3 NNW 0.62 Morning Sun 1.7 E 0.60 Tipton 0.7 N 0.59 Maquoketa 4 W 0.56 Iowa City Arpt 0.53 Anamosa 3 SSW 0.53 Anamosa 1.9 SE 0.52 Fayette 1 NW 0.50 Marengo 3.6 N 0.49 Iowa City 0.48 Salem 3.1 ESE 0.48 Bellevue 0.3 SSW 0.45 Ely 0.5 SE 0.45 Marshalltown 1 NW 0.40 Marengo 0.40 Park View 0.2 WSW 0.40 Camanche 1.2 W 0.36 Williamsburg 0.36 Charlotte 1.9 WNW 0.35 Davenport Arpt 5 N 0.35 Salem 1S 0.34 Fairfield 0.34 Calamus 2.0 NE 0.33 Grinnell 2 SW 0.33 Eldridge 0.7 SSW 0.32 Eldridge 0.6 S 0.31 Bettendorf 2.2 SE 0.31 Mason City ASOS 6 W 0.31 De Witt 0.31 Le Claire LD14 0.30 Parnell 0.1 SSW 0.30 Donnellson 0.28 Davenport 0.9 SSW 0.27 Davenport 0.9 WNW 0.27 Grinnell AWOS 2 SSW 0.27 Marshalltown ASOS 4 N 0.25 Wellman 4.0 E 0.24 Riverdale 0.5 N 0.24 West Point 7.5 NW 0.23 Mason City 1 NNE 0.22 Oskaloosa 1 NNW 0.21 Bettendorf 1.6 WSW 0.21 Sigourney 0.20 Belle Plaine 0.18 Marengo 2.6 SSW 0.14 Ottumwa ASOS 6 NNW 0.14 Toledo 3 N 0.09 Oskaloosa AWOS 9 ESE 0.08 Keosauqua 0.05 Boone 1 SSW 0.02 NWS Johnston* 5 NNW 0.00 Rathbun Reservoir 2 N 0.00 Perry 0 W 0.00 Centerville 0 NE 0.00 Beaconsfield 1 NNE 0.00 Pella AWOS 2 WSW 0.00 ....ILLINOIS.... Bentley 1.42 Orangeville 2.8 NW 1.27 Dallas City 3.0 SSE 1.16 Stockton 3.4 NNE 1.16 Winslow 4.3 ESE 1.04 Galena 0.99 Dakota 4.8 NW 0.97 Freeport 0.95 New Boston LD17 0.94 Roscoe 2SE 0.93 Augusta 0.91 Illinois City 6.7 SW 0.91 Freeport 1.7 ESE 0.86 Elizabeth 0.86 Freeport 2.9 WSW 0.80 Davis 0.5 N 0.79 Ill. City LD16 3 WNW 0.78 Rockford ASOS 0.72 La Harpe 0.72 Freeport 1.7 NW 0.70 Freeport 2.0 NW 0.69 Shannon 0.2 S 0.69 Coleta 1.4 SSW 0.60 Mount Carroll 0.59 Rochelle 0.55 Quincy ASOS 0.54 Hanover 0.2 NW 0.53 Prophetstown 0.2 SW 0.51 Walnut 5.3 ENE 0.51 Colchester 3.5 NE 0.48 Ottawa 4 SW 0.45 Morrison 3.2 E 0.45 Alexis 1 SW 0.40 Kewanee 1 E 0.39 Fulton LD13 0.37 Rochelle AWOS 0.35 Decatur Airport 0.32 Geneseo 2.0 NW 0.32 Mendota 2 SE 0.31 Prairie City 2S 0.31 Milan 8.8 SSW 0.30 Alpha 2.3 N 0.30 Quad City Arpt 3 S 0.30 Walnut 0.30 Princeton 1.1 SE 0.29 Princeton 0.29 Peoria ASOS 0.29 Altona 0.29 Tiskilwa 2.1 N 0.28 New Windsor 2.0 N 0.27 Bloomington Airport 0.27 Moline 1.0 WNW 0.26 Coal Valley 1.9 SE 0.26 Galesburg 0.25 Havana 0.24 Aledo 0.23 Mundelein 0.22 Woodhull 0.3 ESE 0.22 Coal Valley 2.6 E 0.21 Steward 0.19 Lincoln NWS 0.19 Galesburg Arpt 3 SW 0.18 Paw Paw 1 E 0.16 Romeoville 0.09 Joliet 0.04 Windsor 0.02 Jacksonville AWOS 0.02 Tuscola 0.02 Ogden 0.01 Streator 3 SE 0.00 St Anne 0.00 ....MISSOURI.... Memphis 0.00 Kirksville ASOS 0.00 Memphis 0.1 S 0.00 Chillicothe 2 NW 0.00 Columbia 0.00 ....WISCONSIN.... Monroe 1 W 1.84 Darlington 1.70 Brodhead 1 SW 1.35 Beloit-College 1.34 Madison-ASOS 1.20 Viroqua 0.76 La Crosse WFO 0.46 Allenton-WWTP .6 NW 0.42 Watertown-AWOS 0.00 Prairie du Chien AWOS 0.00 ....MINNESOTA.... Grand Meadow 2.30 Preston 1.20

Environment

SPC OUTLOOKS


Figure 1: Outlook	Figure 2: Tornado Outlook	Figure 3: Wind Outlook	Figure 4: Hail Outlook

Near-storm environment summary.


Figure 4: MCD	Figure 5: DVN 7PM SOUNDING

Additional environmental data.


Figure 6: surface	Figure 7: 925mb	Figure 8: 850mb


Figure 9: 700mb	Figure 10: 500mb	Figure 11: 300mb

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