Alert archive / Iowa / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 362, NWS Quad Cities, IA

October 30, 20245 counties in Iowa

NWS Quad Cities, IA issued this severe thunderstorm warning at Oct 30, 2024, 8:19 PM CDT for 5 counties in Iowa. It was in force for 41 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
Oct 30, 2024, 8:19 PM CDT (01:19 UTC)
Expired
Oct 30, 2024, 9:00 PM CDT
In force
41 min
Issued by
NWS Quad Cities, IA
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Iowa County, IA, Jefferson County, IA, Keokuk County, IA, Van Buren County, IA, Washington County, IA

The radar

The Quad Cities radar (KDVN), 124 km from the middle of the area, began a volume at 01:22 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 nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 1.3 hours before the alert went out and 130 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.

Skew-T log-pSkew-T log-p diagram, Davenport, at 00:00Z on 2024-10-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 157 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2024-10-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 253 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
157 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
1371 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
253 m²/s²
0-3 km storm-relative helicity
318 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 30, 7:14 PM CDTSpecial Weather StatementDVNMuscatine46 min
Oct 30, 7:51 PM CDTSpecial Weather StatementDVNScott39 min
Oct 30, 9:00 PM CDTSpecial Weather StatementDVNBenton, Iowa, Johnson, Linn45 min
Oct 30, 9:02 PM CDTSpecial Weather StatementDVNLouisa, Washington43 min
Oct 30, 9:41 PM CDTSpecial Weather StatementDVNCedar, Dubuque, Johnson, Jones49 min
Oct 30, 10:31 PM CDTSpecial Weather StatementDVNDes Moines, Lee44 min
Oct 30, 10:46 PM CDTSevere Thunderstorm WarningDVNDes Moines, Henry, Lee44 min
Oct 30, 11:50 PM CDTSevere Thunderstorm WarningDVNHancock, McDonough40 min
Oct 31, 8:14 AM CDTSpecial Weather StatementDVNCarroll, Jo Daviess46 min
Oct 31, 9:07 AM CDTSpecial Weather StatementDVNCarroll, Stephenson, Whiteside38 min
Oct 30, 9:42 PM CDTSpecial Weather StatementDVNClark, Scotland48 min

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.