Alert archive / Illinois / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 93, NWS Lincoln, IL

June 28, 1993Bureau County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 28, 1993, 4:10 AM CDT for Bureau County, Illinois. It was in force for 65 min.

The area

The counties it named.

The facts

Issued: Jun 28, 1993, 4:10 AM CDT (09:10 UTC)
Expired: Jun 28, 1993, 5:15 AM CDT
In force: 65 min
Issued by: NWS Lincoln, IL
Area: Whole counties

County Bureau County, IL

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 00:00Z, 9.2 hours before the alert went out and 480 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: 1440 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1291 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.7

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

Special weather statement, Jun 28, 3:03 AM CDT, 1 hour 7 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 28, 1:26 AM CDT	Severe Thunderstorm Warning	ILX	Carroll	49 min
Jun 28, 2:05 AM CDT	Severe Thunderstorm Warning	ILX	DeKalb, Ogle	40 min
Jun 28, 2:42 AM CDT	Severe Thunderstorm Warning	ILX	DeKalb, Lee, Ogle	48 min
Jun 28, 2:42 AM CDT	Severe Thunderstorm Warning	ILX	Carroll	48 min
Jun 28, 3:48 AM CDT	Severe Thunderstorm Warning	ILX	Lee	42 min
Jun 28, 9:35 AM CDT	Flash Flood Warning	ILX	McLean	3 hr

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.