Event Summary: June 24th - Davenport, IA Tornado

Overview

SPC Recap of Severe Weather Event: June 24, 2023

Scattered severe storms tracked across southeast Iowa during the mid-afternoon into early evening of June 24, producing large hail up to golf ball size in Van Buren County and tennis ball size hail near Ottumwa.
More organized clusters of severe storms tracked through Dubuque into far northwest IL during the evening and late night hours of June 24. Another storm cluster moved through the Quad Cities, producing wind gusts to 70 mph at the Davenport ASOS and damaged trees and power poles. An EF-0 tornado also tracked east along and north of I-80 near the Davenport Airport causing sporadic minor tree and structure damage.
Much-needed rainfall of a 0.5 to 1.5 inches was reported with some localized higher amounts to near or just over 2 inches. However, some parts of southeast IA, northeast MO, and west central IL missed out on the beneficial rain which will only result in worsening drought conditions in some areas.

Lance Shaeffer, Davenport, IA

Tornado
Radar
Storm Reports
Rainfall
Environment

Tornadoes:

Tornado #1 - Davenport, IA
SCOTT COUNTY

Date	6/24/2023
Time (Local)	10:31 - 10:45 PM CDT
EF Rating	EF-0
Est. Peak Winds	75 MPH
Path Length	9.6 MI
Max Width	20 Yards
Injuries/Deaths	0 / 0
Summary: A tornado developed about 2 miles east of Walcott along Interstate 80. The tornado tracked east and caused sporadic minor tree and structure damage at the Northwest Boulevard exit just north of I-80. The tornado then moved across the Davenport Airport, and caused damage to canopies, tents, and equipment. The tornado passed just south of the NWS office, then continued east, producing minor tree and structure damage along 210th St. The tornado followed an intermittent path of around 9.6 miles, and was on the ground for about 14 minutes. The tornado was rated EF-0, with maximum estimated winds around 75 mph. Occasional minor tree damage was also observed south of the path, due to straight line winds.

Track Map

KMZ FILE

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

IEM RADAR Loop

KDVN Reflectivity (top) and Velocity (bottom) from Saturday, June 24 from 10:20 - 11:00 P.M.
This shows the hybrid supercell / quasi-linear convective system moving into the Davenport
area with strengthening rotation as it passes near to directly over the KDVN radar.

Storm Reports

IEM Local Storm Reports	SPC Severe Weather Event: June 24, 2023


Preliminary Local Storm Report...Summary National Weather Service Quad Cities IA IL 1046 PM CDT Sun Jun 25 2023 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0610 PM Hail 2 SSE Selma 40.83N 92.14W 06/24/2023 M1.25 inch Van Buren IA Storm Chaser Report/video from Twitter, hail of quarter to half dollar size. 0615 PM Hail 2 NNW Douds/Leando 40.86N 92.09W 06/24/2023 E1.50 inch Van Buren IA Public Report from mPING. 0617 PM Hail 2 NNE Douds/Leando 40.86N 92.08W 06/24/2023 E1.75 inch Van Buren IA Public Report from mPING. 0625 PM Hail 3 NW Kilbourn 40.84N 92.01W 06/24/2023 M1.25 inch Van Buren IA Storm Chaser 0550 PM Tstm Wnd Gst 2 ENE Hazleton 42.63N 91.86W 06/24/2023 M50 MPH Buchanan IA CO-OP Observer 0820 AM Rain 4 SE Loran 42.17N 89.88W 06/24/2023 M1.80 inch Carroll IL Public 1016 PM Tstm Wnd Dmg 2 NE Oneco 42.50N 89.65W 06/24/2023 Stephenson IL Public Report of trees down, along with a machine shed blown over. Time estimated by radar. 1024 PM Tstm Wnd Dmg Orangeville 42.47N 89.64W 06/24/2023 Stephenson IL Law Enforcement County dispatch reported a few trees down north of Freeport towards Orangeville. There was also a report of a blown transformer in this area. Time estimated by radar. 1025 PM Tstm Wnd Dmg 2 WSW Freeport 42.28N 89.67W 06/24/2023 Stephenson IL Public 18-inch diameter tree downed at Highland Community College. Time estimated using radar. 0900 AM Rain 2 SE Scioto Mills 42.33N 89.64W 06/25/2023 M1.30 inch Stephenson IL Public 1057 PM Tstm Wnd Dmg Hampton 41.56N 90.41W 06/24/2023 Rock Island IL Law Enforcement Couple trees downed on Hubbard Road. Time estimated using radar. 0855 PM Tstm Wnd Dmg East Dubuque 42.49N 90.64W 06/24/2023 Jo Daviess IL Law Enforcement Widespread trees and power lines down. 0930 PM Tstm Wnd Dmg Galena 42.42N 90.42W 06/24/2023 Jo Daviess IL Law Enforcement Trees down with power outages reported. 0717 AM Rain 1 W Galena 42.42N 90.44W 06/25/2023 M0.75 inch Jo Daviess IL Public 1113 PM Tstm Wnd Dmg 2 ESE Osborn 41.50N 90.23W 06/24/2023 Henry IL Law Enforcement Report of a tree down. Time estimated by radar. 0800 AM Rain 1 ENE Green River 41.47N 90.32W 06/25/2023 M1.50 inch Henry IL Trained Spotter Rain total from last evening. 0950 PM Tstm Wnd Dmg Savanna 42.09N 90.15W 06/24/2023 Carroll IL Law Enforcement Trees down. 0903 AM Rain 4 SE Loran 42.18N 89.87W 06/25/2023 M1.70 inch Carroll IL Trained Spotter 1031 PM Tornado 3 S Maysville 41.61N 90.71W 06/24/2023 Scott IA NWS Storm Survey A tornado developed about 2 miles east of Walcott along Interstate 80. The tornado tracked east and caused sporadic minor tree and structure damage at the Northwest Boulevard exit just north of I-80. The tornado then moved across the Davenport Airport, and caused damage to canopies, tents, and equipment. The tornado passed just south of the NWS office, then continued east, producing minor tree and structure damage along 210th St. The tornado followed an intermittent path of around 9.6 miles, and was on the ground for about 14 minutes. The tornado was rated EF-0, with maximum estimated winds around 75 mph. Occasional minor tree damage was also observed south of the path, due to straight line winds. 1040 PM Tstm Wnd Gst Davenport Municipality 41.61N 90.59W 06/24/2023 M70 MPH Scott IA ASOS ASOS. 1209 AM Tstm Wnd Dmg Bettendorf 41.57N 90.48W 06/25/2023 Scott IA Law Enforcement Trees down in Bettendorf. 1238 AM Rain 1 SE Davenport 41.54N 90.60W 06/25/2023 E1.40 inch Scott IA Public 0408 AM Rain 1 SE Davenport 41.54N 90.59W 06/25/2023 M1.33 inch Scott IA Trained Spotter 0522 AM Rain 2 NNE Credit Island 41.52N 90.60W 06/25/2023 M1.37 inch Scott IA Trained Spotter 0654 AM Rain 1 NNE Bettendorf 41.58N 90.47W 06/25/2023 M1.10 inch Scott IA Trained Spotter 1045 PM Rain 1 NE Fairfax 41.93N 91.76W 06/24/2023 M1.20 inch Linn IA Public 0407 AM Rain 3 NNE Cedar Rapids 42.01N 91.66W 06/25/2023 M1.45 inch Linn IA Trained Spotter storm total. 0924 AM Rain 1 ENE Fairfax 41.93N 91.76W 06/25/2023 M1.00 inch Linn IA Trained Spotter 0658 PM Tstm Wnd Dmg Houghton 40.78N 91.61W 06/24/2023 Lee IA Public Couple trees downed and some siding damage. Time estimated using radar. 0920 PM Hail Argyle 40.53N 91.57W 06/24/2023 M1.00 inch Lee IA Public Delayed report via social media. 0357 AM Rain 2 NNE Stone City 42.14N 91.33W 06/25/2023 M1.25 inch Jones IA Trained Spotter 0906 PM Tstm Wnd Dmg Saint Donatus 42.36N 90.54W 06/24/2023 Jackson IA Public A large tree branch broke off a healthy tree. Time estimated by radar. 0928 PM Tstm Wnd Dmg Maquoketa 42.07N 90.67W 06/24/2023 Jackson IA Public Numerous small branches downed. Time estimated using radar. 0701 AM Rain Parnell 41.58N 92.01W 06/25/2023 M0.68 inch Iowa IA Public 0806 PM Tstm Wnd Dmg Dyersville 42.48N 91.12W 06/24/2023 Dubuque IA Trained Spotter large tree limb down. 0830 PM Rain 1 W Dubuque 42.51N 90.72W 06/24/2023 M1.17 inch Dubuque IA Public 0841 PM Tstm Wnd Dmg Durango 42.56N 90.78W 06/24/2023 Dubuque IA Emergency Mngr Large tree fell across Highway 3. 0853 PM Tstm Wnd Dmg 1 E Dubuque 42.51N 90.67W 06/24/2023 Dubuque IA 911 Call Center Sheriffs Office reported trees and powerlines down in the city of Dubuque. 0853 PM Tstm Wnd Dmg 2 SE Dubuque 42.49N 90.67W 06/24/2023 Dubuque IA 911 Call Center Sheriffs office reported trees and powerlines down around the city. 0737 PM Hail 3 ESE Lowell 40.81N 91.39W 06/24/2023 M1.00 inch Des Moines IA Trained Spotter 0737 PM Tstm Wnd Dmg 3 SE Lowell 40.81N 91.39W 06/24/2023 Des Moines IA Trained Spotter 4 to 5 inch tree limbs down along with lots of small branches. 1018 PM Tstm Wnd Dmg Durant 41.60N 90.91W 06/24/2023 Cedar IA Emergency Mngr Report of tree limbs down in Durant. A tree was blown over onto a homes roof. . 1018 PM Tstm Wnd Dmg Durant 41.60N 90.92W 06/24/2023 Cedar IA Law Enforcement Trees down across roads. Also baseball diamond fence damaged. 0840 PM Rain 3 ENE Hazleton 42.64N 91.86W 06/24/2023 M1.50 inch Buchanan IA Trained Spotter

Rain Reports


24 hour precipitation reports (in Inches), for eastern Iowa, northwest and west central Illinois, and northeast Missouri. Reported between Midnight and 9 AM, Sunday June 25, 2023.
....IOWA.... Mason City 1 NNE 3.60 Guttenberg Dam 10 2.18 Tipton 0.3 ESE 2.12 Hampton 1 N 1.99 Fayette 1 NW 1.95 Lowden 1.92 Elkader 6SSW 1.83 Dundee 1.4 NNE 1.73 Strawberry Point 1.73 Calamus 2.0 NE 1.63 Oelwein 1E 1.61 Dubuque #3 7 SW 1.60 Dubuque Arpt 1.51 Peosta 2.9 E 1.48 Muscatine 2N 1.42 Anamosa 3 SSW 1.41 Lisbon 0.1 W 1.40 Amana 4.7 W 1.35 Davenport 0.9 WNW 1.33 Dubuque LD11 1.32 Hopkinton 5.4 WSW 1.31 Dyersville 1.7 ESE 1.29 Muscatine 2.1 N 1.27 Charlotte 0.2 SW 1.25 Cedar Rapids 4.1 NW 1.24 Davenport 2.1 N 1.18 Asbury 0.6 S 1.17 Marion 0.4 NNW 1.14 Robins 0.8 SE 1.14 Davenport 1.0 NE 1.13 Waterloo ASOS 5 NW 1.13 Williamsburg 0.6 SW 1.07 Mason City ASOS 6 W 1.07 Cedar Rapids 2.1 NW 1.06 Ely 2.0 N 1.04 Rickardsville 0.2 W 1.04 Dubuque 1.0 SE 1.02 Palo 4.4 SSW 1.00 De Witt 1.00 Cedar Rapids Arpt 0.96 Marion 1.7 NNW 0.92 Charlotte 1.9 WNW 0.91 Holy Cross 1.8 E 0.91 Boone 1 SSW 0.88 Cedar Rapids 3.3 WNW 0.86 Muscatine 3.0 NE 0.85 Marengo 2.6 SSW 0.84 Marengo 3.6 N 0.83 Nichols 2.5 NNW 0.76 Clinton 1.7 NNW 0.75 Pella 4 N 0.74 Bellevue LD12 0.74 Fairfax 4.0 NW 0.72 Davenport Arpt 0.69 Parnell 0.1 SSW 0.68 Pella AWOS 2 WSW 0.68 Camanche 1.2 W 0.65 Iowa City 2.3 E 0.65 Wellman 4.0 E 0.62 Maquoketa 0.61 Eldridge 0.6 S 0.60 Solon 0.4 WNW 0.53 North Liberty 0.7 SSW 0.53 Iowa City Arpt 0.53 Solon 0.3 ESE 0.49 Wilton 0.4 ENE 0.45 Belle Plaine 0.41 Iowa City 0.40 Park View 0.2 WSW 0.37 Eldridge 5.4 E 0.35 Marshalltown ASOS 4 N 0.35 Vinton 0.35 Nichols 3.2 SSW 0.31 Salem 1S 0.31 Wapello 5.4 SE 0.25 Ames US 30 2 SSE 0.25 Danville 2.9 W 0.24 Salem 3.1 ESE 0.24 Burlington Arpt 0.19 Rathbun Reservoir 2 N 0.12 Ainsworth 7.4 N 0.11 Oskaloosa AWOS 9 ESE 0.11 Marshalltown 1 NW 0.10 Keokuk LD19 0.10 Ottumwa ASOS 6 NNW 0.08 New London 1.5 SW 0.06 Washington 0.06 Fort Madison 7.7 N 0.05 NWS Johnston* 5 NNW 0.04 Burlington 6.5 SSW 0.02 Newton 1 NE 0.02 Washington 5.8 SW 0.01 Grinnell AWOS 2 SSW 0.01 Farmington 0.4 NNW 0.00 Farmington 2.4 W 0.00 Farmington 0.3 NW 0.00 Farmington 3.5 W 0.00 Fairfield 5.7 NNE 0.00 Oelwein AWOS 0.00 Allerton 2 S 0.00 Donnellson 0.00	....ILLINOIS.... Moline 0.7 NNE 1.88 Geneseo 2.0 NW 1.74 Rockford Arpt 1.53 East Dubuque 1.7 SE 1.44 Freeport 4.3 W 1.34 Paw Paw 1 E 1.30 Lena 0.3 SSE 1.27 Coal Valley 2.6 E 1.25 Lanark 4.2 NNW 1.13 Lanark 6.0 E 1.12 East Dubuque 1.7 ENE 1.08 Freeport 1.05 Lanark 5.3 N 1.02 Freeport 2.9 WSW 1.02 Mundelein 0.98 Davis 0.5 N 0.97 Mount Carroll 0.96 Romeoville 0.95 Mount Carroll 6.8 NNW 0.94 Winslow 4.3 ESE 0.87 Rock Falls 3.1 S 0.83 Quad City Arpt 0.83 Stockton 3.4 NNE 0.82 Stockton 3 NNE 0.82 Stockton 4.6 NW 0.81 Elizabeth 0.81 Prophetstown 0.2 SW 0.80 Stockton 5.9 WNW 0.77 Walnut 5.3 ENE 0.73 Fulton LD13 0.73 Joliet Arpt 0.69 Atkinson 2.6 NNE 0.67 Coleta 1.4 SSW 0.65 Steward 0.63 Mendota 2 SE 0.62 Sterling 5.9 NNE 0.61 Rochelle Arpt 0.48 Ill. City LD16 3 WNW 0.40 Galesburg 0.40 Quincy Arpt 0.37 New Boston LD17 0.35 Aledo 0.34 St Anne 0.33 Kewanee 1 E 0.32 Gladstone LD18 0.30 Alpha 2.3 N 0.29 New Windsor 2.0 N 0.28 Ottawa 4 SW 0.21 Taylor Ridge 1.1 N 0.18 McNabb 1.4 NW 0.17 Princeton 1.1 SE 0.11 Princeton 0.11 Ogden 0.10 Tuscola 0.09 Galva 2.7 NE 0.08 Illinois City 6.7 SW 0.07 Woodhull 0.3 ESE 0.05 Lincoln NWS 0.02 Peoria Arpt 0.02 Colchester 3.5 NE 0.00 Dallas City 3.0 SSE 0.00 Windsor 0.00 Macomb 0.00 La Harpe 0.00 Bloomington Airport 0.00 Decatur Airport 0.00 Jacksonville Arpt 0.00 ....MISSOURI.... Chillicothe Arpt 0.01 Kahoka 5.2 ESE 0.00 Columbia Arpt 0.00 Kirksville Arpt 0.00 ....WISCONSIN.... Prairie du Chien AWOS 1.02 Monroe 1 W 1.02 Brodhead 1 SW 0.73 Beloit-College 0.60 Whitewater 0.52 Sullivan-NWS 2 SE 0.49 Steuben 4SE 3 NE 0.48 La Crosse WFO 0.33 Viroqua 0.27 Allenton-WWTP .6 NW 0.21 Madison Arpt 0.21 ....MINNESOTA.... Grand Meadow 0.25 Theilman 1SSW 0.00

Environment


MD 1239	MD 1243	MD 1245	MD 1248


1 PM surface weather map highlighting the warm front and markedly increasing dew points. This would be the area where multiple supercell thunderstorms would develop over south central Iowa, including one that tracked into southeast Iowa late in the afternoon, producing up to tennis ball size hail near Ottumwa and golf ball size hail in Van Buren County. As the low pressure itself tracked northeast, along with strengthening upper level winds, it resulted in increasing coverage of thunderstorms during the mid to late evening that tracked across northeast Iowa and northwest Illinois, as well as the Quad Cities metro.

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