Alert archive / Illinois / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 63, NWS Lincoln, IL

June 15, 1991McDonough County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 15, 1991, 3:01 PM CDT for McDonough County, Illinois. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Jun 15, 1991, 3:01 PM CDT (20:01 UTC)
Expired
Jun 15, 1991, 4:00 PM CDT
In force
59 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County McDonough County, IL

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 8.0 hours before the alert went out and 414 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, Paducah/Barkley, KY at 12:00Z on 1991-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2296 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, Paducah/Barkley, KY at 12:00Z on 1991-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -29 square meters per square second.193958Sfc1 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
2296 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
775 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-29 m²/s²
0-3 km storm-relative helicity
-16 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.6

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 15, 1:50 AM CDTSevere Thunderstorm WarningILXFulton14 hr
Jun 15, 3:50 PM CDTSevere Thunderstorm WarningILXTazewell, Woodford55 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1991Every severe thunderstorm warning in 1991

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.