Alert archive / Illinois / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 263, NWS Paducah, KY

October 21, 20194 counties in Illinois

NWS Paducah, KY issued this severe thunderstorm warning at Oct 21, 2019, 5:40 AM CDT for 4 counties in Illinois. It was in force for 35 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 21, 2019, 5:40 AM CDT (10:40 UTC)
Expired
Oct 21, 2019, 6:15 AM CDT
In force
35 min
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Johnson County, IL, Pope County, IL, Saline County, IL, Williamson County, IL

The radar

The Paducah radar (KPAH), 58 km from the middle of the area, began a volume at 10:40 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.

IssuedProductOfficeLasted
Oct 21, 3:06 AM CDTTornado WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 10.7 hours before the alert went out and 285 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 2019-10-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2019-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1005 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
123 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 21, 5:52 AM CDTSevere Thunderstorm WarningPAHCrittenden, Livingston22 min
Oct 21, 7:08 AM CDTSevere Thunderstorm WarningPAHFulton, Graves, Hickman29 min
Oct 21, 3:01 AM CDTSevere Thunderstorm WarningPAHJackson29 min
Oct 21, 4:00 AM CDTSevere Thunderstorm WarningPAHJackson45 min
Oct 21, 4:02 AM CDTSevere Thunderstorm WarningPAHFranklin, Jefferson28 min
Oct 21, 2:31 AM CDTSpecial Weather StatementPAHBollinger29 min
Oct 21, 3:11 AM CDTSevere Thunderstorm WarningPAHCarter, Ripley, Wayne49 min
Oct 21, 3:37 AM CDTSevere Thunderstorm WarningPAHButler, Wayne23 min
Oct 21, 3:45 AM CDTSevere Thunderstorm WarningPAHBollinger, Cape Girardeau, Stoddard30 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2019Every severe thunderstorm 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.