Alert archive / Illinois / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 19, NWS Lincoln, IL

June 4, 1993Champaign County, Piatt County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 4, 1993, 4:15 PM CDT for Champaign County, Piatt County, Illinois. It was in force for 30 min.

The area

The counties it named.

The facts

Issued: Jun 4, 1993, 4:15 PM CDT (21:15 UTC)
Expired: Jun 4, 1993, 4:45 PM CDT
In force: 30 min
Issued by: NWS Lincoln, IL
Area: Whole counties

Counties Champaign County, IL, Piatt County, IL

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 9.3 hours before the alert went out and 335 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3217 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 766 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 108 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 8.1

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.

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.

In the hours before

Local storm report, Jun 4, 3:29 PM CDT, 46 minutes before

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Special weather statement, Jun 4, 3:39 PM CDT, 36 minutes before

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Special weather statement, Jun 4, 3:50 PM CDT, 25 minutes before

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Special weather statement, Jun 4, 3:51 PM CDT, 24 minutes before

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Special weather statement, Jun 4, 3:57 PM CDT, 18 minutes before

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Special weather statement, Jun 4, 3:57 PM CDT, 18 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 4:15 AM CDT	Severe Thunderstorm Warning	ILX	Shelby	30 min
Jun 4, 5:25 AM CDT	Severe Thunderstorm Warning	ILX	Macon, Shelby	41 min
Jun 4, 6:38 AM CDT	Severe Thunderstorm Warning	ILX	Coles, Douglas, Edgar	67 min
Jun 4, 7:05 AM CDT	Severe Thunderstorm Warning	ILX	Clark	40 min
Jun 4, 7:22 AM CDT	Severe Thunderstorm Warning	ILX	Coles, Cumberland, Moultrie	68 min
Jun 4, 7:29 AM CDT	Tornado Warning	ILX	Moultrie, Shelby	31 min
Jun 4, 7:49 AM CDT	Severe Thunderstorm Warning	ILX	Clark, Coles, Cumberland, Edgar	41 min
Jun 4, 8:08 AM CDT	Severe Thunderstorm Warning	ILX	Clark	52 min
Jun 4, 4:47 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Vermilion	28 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1993 Every severe thunderstorm warning in 1993

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.