Alert archive / Illinois / Flash Flood Warnings in 2019

Flash Flood Warning 58, NWS Paducah, KY

August 21, 2019Jefferson County, Wayne County, Illinois

NWS Paducah, KY issued this flash flood warning at Aug 21, 2019, 9:34 PM CDT for Jefferson County, Wayne County, Illinois. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 21, 2019, 9:34 PM CDT (02:34 UTC)
Expired
Aug 22, 2019, 3:30 AM CDT
In force
6 hr
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Flood severity
None

Counties Jefferson County, IL, Wayne County, IL

The radar

The Evansville,IN radar (KVWX), 84 km from the middle of the area, began a volume at 02:36 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

Lincoln, IL (KILX), launched 00:00Z, 2.6 hours before the alert went out and 199 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, Lincoln, IL at 00:00Z on 2019-08-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1002 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, Lincoln, IL at 00:00Z on 2019-08-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 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
1002 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
880 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Aug 21, 9:06 PM CDT, 28 minutes before
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The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 22, 5:31 AM CDTSpecial Weather StatementPAHCalloway, Christian, Todd, Trigg59 min
Aug 22, 11:20 AM CDTSpecial Weather StatementPAHBallard55 min
Aug 22, 12:17 PM CDTSpecial Weather StatementPAHBallard, Carlisle, Crittenden, Fulton, Hickman, Livingston and 1 more58 min
Aug 22, 12:54 PM CDTSevere Thunderstorm WarningPAHCarlisle, Graves36 min
Aug 22, 1:24 PM CDTSpecial Weather StatementPAHCalloway, Graves, Hickman, Livingston, Lyon, Marshall51 min
Aug 21, 9:06 PM CDTSpecial Weather StatementPAHJefferson, Wayne39 min
Aug 21, 9:14 PM CDTSevere Thunderstorm WarningPAHJefferson, Wayne31 min
Aug 21, 9:44 PM CDTSevere Thunderstorm WarningPAHWayne46 min
Aug 21, 10:32 PM CDTSpecial Weather StatementPAHEdwards, Wabash, Wayne43 min
Aug 21, 11:20 PM CDTSpecial Weather StatementPAHEdwards, Wabash, White40 min
Aug 21, 11:29 PM CDTSevere Thunderstorm WarningPAHWabash46 min

Nearby

Flash Flood Warnings in Illinois, 2019Every flash flood warning in 2019

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.