Overview
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Several thunderstorms developed across much of eastern Iowa and northwest Illinois on the afternoon and early evening of February 8, 2024. Many of these storms had pea to dime size hail. The strongest storms occurred in Jackson County, IA and Jo Daviess, Stephenson, and Putnam counties in IL. Quarter to ping pong ball size fell with the storms in Jackson, Jo Daviess, and Stephenson counties, with the larger hailstones reported near Freeport, IL. A brief tornado developed just south of the Quad Cities County Warning Area in Marshall county and moved into Putnam county. A stronger tornado developed in Wisconsin (NWS Milwaukee recap). In addition to the storms, record warmth occurred with widespread highs in the 60s and strong gradient winds gusting 35-50 mph. |
 Event Infographic (Link to Image) |
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| Severe Weather Setup Infographic (Link to Image) | Record Highs / Warm Lows February 8th | Wind Advisory Area (brown) |
Tornadoes:
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Tornado - 2 SE Henry IL
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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Wind & Hail:
Strong south winds gusting between 35 and 50 mph were common during the day Thursday. These winds brought very warm temperatures and unusually high dewpoints into the region which supported thunderstorm development. Most storms that occurred Thursday afternoon had pea to dime size hail. The strongest cells tracked across Jackson county in IA and Jo Daviess and Stephenson counties in IL where quarter to ping pong ball size hail fell.
Wind
...Highest Wind Reports Past 24 Hours... Observations are collected from a variety of sources with varying equipment and exposures. Not all data listed are considered official. Location Speed Time/Date Provider Burlington Arpt 49 MPH 0359 PM 02/08 ASOS Iowa City Arpt 49 MPH 0101 PM 02/08 ASOS Cedar Rapids Arpt 48 MPH 0154 PM 02/08 ASOS Mount Pleasant Arpt 48 MPH 0335 PM 02/08 AWOS Olin 47 MPH 0125 PM 02/08 CWOP University Heights 46 MPH 0210 PM 02/08 MESOWEST Davenport Arpt 46 MPH 0325 PM 02/08 ASOS Fairfield Arpt 45 MPH 0235 PM 02/08 AWOS Muscatine Arpt 45 MPH 0235 PM 02/08 AWOS Washington Arpt 44 MPH 0215 PM 02/08 AWOS Quad City Intl Arpt 44 MPH 0258 PM 02/08 ASOS Anamosa 44 MPH 0640 PM 02/08 MESOWEST Cantril 43 MPH 0140 PM 02/08 MESOWEST Victor 43 MPH 0140 PM 02/08 MESOWEST New London 42 MPH 0400 PM 02/08 CWOP Fairfax 42 MPH 0135 PM 02/08 DAVIS Dubuque 41 MPH 0919 PM 02/08 CWOP Dubuque Arpt 41 MPH 0244 PM 02/08 ASOS Keokuk Arpt 41 MPH 0335 PM 02/08 AWOS Eldridge 40 MPH 0905 PM 02/08 CWOP Mount Pleasant 40 MPH 0340 PM 02/08 MESOWEST Sigourney 40 MPH 0140 PM 02/08 MESOWEST
Hail / Cloud Photos
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| Freeport, IL Image: Greg Munda |
Dyersville, IA Image: Jamie Unsen |
Davenport, IA NWS Office Image: Andy Ervin |
Dubuque, IA Image: Mike Silvis |
Storm Reports
| Interactive Storm Report Link | SPC Severe Weather Event: February 8, 2024 |
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Preliminary Local Storm Report...Summary National Weather Service Quad Cities IA IL 854 PM CST Thu Feb 8 2024 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0543 PM Hail 1 WNW Whiteside County 41.76N 89.71W 02/08/2024 E0.25 inch Whiteside IL Public 0540 PM Hail 1 N Dakota 42.39N 89.53W 02/08/2024 E1.00 inch Stephenson IL Trained Spotter Dime to quarter size hail. 0534 PM Hail 2 ESE Scioto Mills 42.33N 89.63W 02/08/2024 E1.50 inch Stephenson IL Trained Spotter 0501 PM Hail 1 NNW Mount Carroll 42.11N 89.98W 02/08/2024 E0.25 inch Carroll IL Trained Spotter 0453 PM Hail Winslow 42.49N 89.80W 02/08/2024 M1.00 inch Stephenson IL Public Time estimated based on radar. 0447 PM Hail 1 W Warren 42.50N 90.01W 02/08/2024 E1.00 inch Jo Daviess IL Trained Spotter 0445 PM Tornado 5 W Magnolia 41.11N 89.30W 02/08/2024 Putnam IL Emergency Mngr A semi truck was overturned with damage to at least one outbuilding, as well as to multiple large trees, at this location. Multiple trained spotter visual reports and video of a tornado. Time estimated based on video and radar. Unknown path length, width, and maximum winds at this time. 0430 PM Hail Lowden 41.86N 90.92W 02/08/2024 E0.75 inch Cedar IA CO-OP Observer Covered ground in small hail, with a few flat disks that were dime diameter. 0426 PM Hail 2 E Galena Territory 42.40N 90.30W 02/08/2024 E0.75 inch Jo Daviess IL Public Report from mPING: Dime (0.75 in.). 0413 PM Hail 2 E Asbury 42.52N 90.72W 02/08/2024 E0.88 inch Dubuque IA Public Nickel estimate a few larger possible. 0407 PM Hail 1 NW Galena 42.43N 90.44W 02/08/2024 M0.25 inch Jo Daviess IL Public 0407 PM Hail 1 NNW Eldridge 41.65N 90.58W 02/08/2024 E0.25 inch Scott IA NWS Employee 0400 PM Hail 2 WSW Saint Donatus 42.36N 90.58W 02/08/2024 E0.70 inch Jackson IA Trained Spotter 0400 PM Hail Davenport NWS Office 41.61N 90.58W 02/08/2024 E0.50 inch Scott IA Official NWS Obs 0400 PM Hail 1 NNE Blue Grass 41.52N 90.76W 02/08/2024 E0.88 inch Scott IA Public Relayed by media. 0356 PM Hail 2 WNW Otter Creek 42.24N 90.72W 02/08/2024 M1.25 inch Jackson IA Trained Spotter Time estimated from radar. 0356 PM Hail 1 WNW Dubuque 42.51N 90.71W 02/08/2024 E0.25 inch Dubuque IA Trained Spotter 0355 PM Hail 1 SSW Geneseo 41.44N 90.16W 02/08/2024 E0.25 inch Henry IL Trained Spotter 0350 PM Hail 1 SSW Cambridge 41.30N 90.20W 02/08/2024 M0.25 inch Henry IL Trained Spotter 0331 PM Hail 1 SSE Temple Hill 42.22N 90.97W 02/08/2024 E0.75 inch Jones IA Public Report from mPING: Dime (0.75 in.). 0330 PM Hail 3 N Muscatine 41.47N 91.07W 02/08/2024 E0.50 inch Muscatine IA Trained Spotter 0321 PM Hail 1 SSE Monticello 42.23N 91.18W 02/08/2024 E0.25 inch Jones IA Trained Spotter 0318 PM Hail Dyersville 42.48N 91.11W 02/08/2024 E0.70 inch Dubuque IA Emergency Mngr Relayed by Emergency Management. 0317 PM Hail Dyersville 42.49N 91.12W 02/08/2024 E0.70 inch Dubuque IA Broadcast Media Photo relayed by media. 0315 PM Hail Monticello 42.24N 91.19W 02/08/2024 E0.25 inch Jones IA Law Enforcement 0300 PM Hail 1 NNW Kingston 41.00N 91.05W 02/08/2024 E0.25 inch Des Moines IA Trained Spotter 0245 PM Hail 1 NE Marion 42.04N 91.58W 02/08/2024 E0.25 inch Linn IA Trained Spotter
Rain Reports
| Local 24-hr Rainfall (link) |
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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 February 09, 2024. ....IOWA.... Dubuque 1.4 WNW 0.22 Dubuque LD11 0.10 Dubuque 1.0 SE 0.07 Bellevue LD12 0.05 Lowden 0.05 Dubuque #3 7 SW 0.03 Monticello 1 E 0.03 Dubuque Arpt 0.03 Independence 0.9 WNW 0.02 Mason City ASOS 6 W 0.02 Davenport Arpt 0.01 Muscatine 3.0 NE 0.00 Park View 0.2 WSW 0.00 Clinton 1.7 NNW 0.00 Calamus 2.0 NE 0.00 Charlotte 1.9 WNW 0.00 West Branch 2.3 SSW 0.00 Solon 0.4 WNW 0.00 Iowa City 2.3 E 0.00 North Liberty 0.7 SSW 0.00 Coralville 1.3 SE 0.00 Marengo 3.6 N 0.00 Marion 0.9 NE 0.00 Marion 0.4 NNW 0.00 Robins 0.8 SE 0.00 Cedar Rapids 2.7 NE 0.00 Marion 1.7 NNW 0.00 Shellsburg 2.9 S 0.00 Waukon 3N 0.00 Oelwein 1E 0.00 Elkader 6SSW 0.00 Toledo 3 N 0.00 Waterloo ASOS 5 NW 0.00 Mason City 1 NNE 0.00 NWS Johnston* 5 NNW 0.00 Marshalltown ASOS 4 N 0.00 Cedar Rapids Arpt 0.00 Cascade 0.00 Belle Plaine 0.00 Iowa City Arpt 0.00 Vinton 0.00 Manchester 0.00 Fort Madison 4.5 NNW 0.00 Farmington 0.4 NNW 0.00 Farmington 2.4 W 0.00 Farmington 0.3 NW 0.00 Farmington 3.5 W 0.00 Burlington 6.5 SSW 0.00 New London 1.5 SW 0.00 Fairfield 0.4 SE 0.00 Wapello 5.4 SE 0.00 Wapello 0.2 S 0.00 Nichols 2.5 NNW 0.00 Wellman 4.0 E 0.00 Ainsworth 7.4 N 0.00 Riverdale 0.5 N 0.00 Davenport 0.9 WNW 0.00 Solon 0.3 ESE 0.00 Marengo 2.6 SSW 0.00 Parnell 0.1 SSW 0.00 Cedar Rapids 2.1 NW 0.00 Central City 6.7 W 0.00 Ely 0.5 SE 0.00 Mount Auburn 2.2 NNW 0.00 Dundee 1.4 NNE 0.00 Oelwein AWOS 0.00 Rathbun Reservoir 2 N 0.00 Guttenberg Dam 10 0.00 Fayette 1 NW 0.00 Oskaloosa 1 NNW 0.00 Perry 0 W 0.00 Ottumwa ASOS 6 NNW 0.00 Hampton 1 N 0.00 Marshalltown 1 NW 0.00 Centerville 0 NE 0.00 Ames US 30 2 SSE 0.00 Burlington Arpt 0.00 Keosauqua 0.00 Iowa City 0.00 Fairfield 0.00 Anamosa 3 SSW 0.00 Maquoketa 0.00 Williamsburg 0.00 Washington 0.00 Keokuk LD19 0.00 Burlington 2S 0.00 Mt Pleasant 1 SSW 0.00 Sigourney 0.00 Grinnell 2 SW 0.00 Boone 1 SSW 0.00 ....ILLINOIS.... McNabb 1.4 NW 0.34 Romeoville 0.22 Ottawa 4 SW 0.12 Peoria Arpt 0.06 Lena 0.3 SSE 0.04 Freeport 2.9 WSW 0.04 Winslow 4.3 ESE 0.03 Stockton 3.4 NNE 0.03 Stockton 3 NNE 0.03 Galva 0.4 NW 0.02 Geneseo 2.0 NW 0.02 Lanark 4.2 NNW 0.02 Davis 0.5 N 0.02 Stockton 5.9 WNW 0.02 Freeport 0.02 Fulton LD13 0.02 East Dubuque 1.7 SE 0.01 Mundelein 0.01 Elizabeth 0.01 Mount Carroll 0.01 Colchester 3.5 NE 0.00 New Windsor 2.0 N 0.00 Rock Falls 3.1 S 0.00 Mount Carroll 6.8 NNW 0.00 Freeport 4.3 W 0.00 Stockton 4.6 NW 0.00 Hanover 0.2 NW 0.00 Rockford Arpt 0.00 Bentley 0.00 Aledo 0.00 Steward 0.00 Warsaw 5.8 SE 0.00 Stronghurst 0.4 SSW 0.00 Viola 0.4 E 0.00 Moline 0.7 NNE 0.00 St Anne 0.00 Lincoln NWS 0.00 Macomb 0.00 La Harpe 0.00 Ill. City LD16 3 WNW 0.00 Gladstone LD18 0.00 Augusta 0.00 Quad City Arpt 0.00 New Boston LD17 0.00 Bloomington Airport 0.00 Decatur Airport 0.00 Quincy Arpt 0.00 ....MISSOURI.... Columbia Arpt 0.00 Chillicothe Arpt 0.00 Kirksville Arpt 0.00 Memphis 0.00 ....WISCONSIN.... Monroe 1 W 0.20 Madison Arpt 0.07 La Crosse WFO 0.05 Viroqua 0.04 Brodhead 1 SW 0.01 Steuben 4SE 3 NE 0.00 Beloit-College 0.00 Whitewater 0.00 Darlington 0.00
Environment
SPC Severe Weather Event Link: February 8, 2024
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| Figure 1: 13z SPC Day 1 Outlook | Figure 2: 13z SPC Day 1 Tornado Outlook | Figure 3: 13z SPC Day 1 Hail Outlook | Figure 4: SPC Day 1 Wind Outlook |
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| Figure 5: SPC Mesoscale Discussion 113 | Figure 6: SPC Mesoscale Discussion 114 |
Surface / Satellite Loops
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| Figure 7: MSAS Surface Temps (link) | Figure 8: MSAS Surface Dewpoints (link) | Figure 9: MSAS MSLP (link) | Figure 10: Visible Satellite (link) |
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| Figure 11: Water Vapor (link) | Figure 12: IR Satellite (link) |
Near-storm environment summary
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| Figure 13: 22z SPC Mesoanalysis 0-1 km shear | Figure 14: 22z SPC Mesoanalysis 0-3 km MLCAPE | Figure 15: 22z SPC Mesoanalysis 500mb winds |
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