Alert archive / Iowa / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 95, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Apr 27, 2024, 8:09 PM CDT for 4 counties in Iowa. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 27, 2024, 8:09 PM CDT (01:09 UTC)
- Expired
- Apr 27, 2024, 8:48 PM CDT
- In force
- 39 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Cedar County, IA, Clinton County, IA, Jones County, IA, Scott County, IA
The radar
The Quad Cities radar (KDVN), 35 km from the middle of the area, began a volume at 01:11 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 27, 5:58 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 1.2 hours before the alert went out and 39 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1529 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 1148 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Quad Cities, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 27, 6:20 PM CDT, 1 hour 49 minutes earlier.
Area forecast discussion, Apr 27, 6:20 PM CDT, 1 hour 49 minutes before
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Hazardous Weather Outlook National Weather Service Quad Cities IA IL 323 PM CDT Sat Apr 27 2024 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-282030- Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson- Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson- Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll- Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson- Warren-Hancock-McDonough-Scotland-Clark- 323 PM CDT Sat Apr 27 2024 This Hazardous Weather Outlook is for portions of north central Illinois...northwest Illinois...west central Illinois...east central Iowa...northeast Iowa...southeast Iowa and northeast Missouri. .DAY ONE...THIS AFTERNOON AND TONIGHT Southerly wind gusts may occasionally reach 35 to 45 mph this afternoon. Thunderstorms are expected to develop this afternoon through tonight. Severe weather is expected with large hail and damaging winds the main threats. An isolated tornado cannot be ruled out this evening. The Storm Prediction Center has placed portions of eastern Iowa, northeast Missouri and west central Illinois in an Enhanced risk, or level 3 out of 5, for severe weather, with the remainder of the area in a Slight risk, or level 2 out of 5. Heavy rainfall will also be possible with the storms and could lead to a localized flooding risk. A Flood Watch has been issued for southeast Iowa, west central Illinois, and northeast Missouri, where rainfall totals around 1 to 2 inches will be possible tonight. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY Additional showers and storms are expected on Sunday. A few of these storms could be severe Sunday afternoon and evening with damaging winds, large hail, and isolated tornadoes. Heavy rainfall could also pose a localized flooding risk. The pattern will turn active once again Tuesday night through Friday, with several chances for storms. It is too soon to determine the severe weather threat. .SPOTTER INFORMATION STATEMENT... Spotter activation will be needed at times through Sunday evening. GENERAL STORM MOTION OF THE DAY: Toward the northeast at 30 to 40 MPH.
In the hours before
Special weather statement, Apr 27, 2:55 PM CDT, 5 hours 14 minutes before
Special Weather Statement
National Weather Service Quad Cities IA/IL
255 PM CDT Sat Apr 27 2024
ILZ002-007-272045-
Carroll IL-Stephenson IL-
255 PM CDT Sat Apr 27 2024
...A strong thunderstorm will impact portions of northeastern Carroll
and central Stephenson Counties through 345 PM CDT
...
At 255 PM CDT, Doppler radar was tracking a strong thunderstorm near
Pearl City, or 7 miles west of Freeport, moving northeast at 30 mph.
HAZARD...Winds in excess of 40 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could cause minor tree limb damage and blow
around unsecured objects. Minor damage to outdoor objects
is possible.
Locations impacted include...
Freeport, Lena, Pearl City, Cedarville, Davis, Dakota, Rock City,
Ridott, Rock Grove, Eleroy, Red Oak, Damascus, Afolkey, Scioto Mills,
Winneshiek, Dakota Dornink Airport, Albertus Airport, Bolton,
Stephenson County Fairgrounds, and Lake Summerset.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4250 8940 4232 8940 4218 8976 4233 8989
4250 8953
TIME...MOT...LOC 1955Z 238DEG 26KT 4230 8977
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
DCLocal storm report, Apr 27, 3:22 PM CDT, 4 hours 47 minutes before
Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
322 PM CDT Sat Apr 27 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0303 PM Hail 2 N Freeport 42.32N 89.63W
04/27/2024 M0.50 Inch Stephenson IL Public
Report from mPING: Half-inch (0.50 in.).
&&Local storm report, Apr 27, 3:32 PM CDT, 4 hours 37 minutes before
Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
332 PM CDT Sat Apr 27 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0329 PM Hail 3 S Rock City 42.37N 89.46W
04/27/2024 E0.75 Inch Stephenson IL Public
Report from mPING: Dime (0.75 in.).
&&Special weather statement, Apr 27, 4:14 PM CDT, 3 hours 55 minutes before
Special Weather Statement
National Weather Service Quad Cities IA/IL
414 PM CDT Sat Apr 27 2024
IAZ041-042-272200-
Delaware IA-Dubuque IA-
414 PM CDT Sat Apr 27 2024
...A strong thunderstorm will impact portions of east central
Delaware and northwestern Dubuque Counties through 500 PM CDT
...
At 413 PM CDT, Doppler radar was tracking a strong thunderstorm over
Dyersville, or 16 miles east of Manchester, moving northeast at 30
mph.
HAZARD...Winds in excess of 40 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could cause minor tree limb damage and blow
around unsecured objects. Minor damage to outdoor objects
is possible.
Locations impacted include...
Dubuque, Asbury, Dyersville, Epworth, Farley, Earlville, New Vienna,
Worthington, Holy Cross, Luxemburg, Rickardsville, Sherrill,
Sageville, Balltown, Bankston, Durango, Graf, Bankston Park, Cottage
Hill, and New Wine Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4264 9071 4259 9068 4257 9066 4235 9111
4247 9130 4265 9112 4265 9090 4268 9089
TIME...MOT...LOC 2113Z 220DEG 28KT 4247 9114
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
SpeckLocal storm report, Apr 27, 5:26 PM CDT, 2 hours 43 minutes before
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</html>The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 7:03 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Johnson, Keokuk, Washington | 42 min |
| Apr 27, 7:35 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Muscatine, Washington | 40 min |
| Apr 27, 7:40 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Van Buren | 50 min |
| Apr 27, 7:41 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Muscatine, Washington | 34 min |
| Apr 27, 7:58 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson | 28 min |
| Apr 27, 8:06 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Lee, Washington | 39 min |
| Apr 27, 8:07 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Muscatine, Scott | 38 min |
| Apr 27, 8:39 PM CDT | Special Weather Statement | DVN | Scott | 51 min |
| Apr 28, 1:49 PM CDT | River Flood Warning | DVN | Des Moines, Henry, Lee | 19 hr |
| Apr 28, 8:05 AM CDT | River Flood Warning | DVN | Clark | 31 hr |
Nearby
Severe Thunderstorm Warnings in Iowa, 2024Every severe thunderstorm warning in 2024
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.