Alert archive / Illinois / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 9, NWS Quad Cities, IA

June 8, 1993Henry County, Rock Island County, Whiteside County, Illinois

NWS Quad Cities, IA issued this severe thunderstorm warning at Jun 8, 1993, 5:49 AM CDT for Henry County, Rock Island County, Whiteside County, Illinois. It was in force for 41 min.

The area

The counties it named.

The facts

Issued: Jun 8, 1993, 5:49 AM CDT (10:49 UTC)
Expired: Jun 8, 1993, 6:30 AM CDT
In force: 41 min
Issued by: NWS Quad Cities, IA
Area: Whole counties

Counties Henry County, IL, Rock Island County, IL, Whiteside County, IL

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 10.8 hours before the alert went out and 370 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 529 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

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 8, 3:35 AM CDT, 2 hours 14 minutes before

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Special weather statement, Jun 8, 3:48 AM CDT, 2 hours 1 minute before

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Special weather statement, Jun 8, 4:30 AM CDT, 1 hour 19 minutes before

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Special weather statement, Jun 8, 4:39 AM CDT, 1 hour 10 minutes before

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Special weather statement, Jun 8, 5:15 AM CDT, 34 minutes before

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Special weather statement, Jun 8, 5:30 AM CDT, 19 minutes before

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The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 7, 10:26 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Scott	64 min
Jun 8, 6:26 PM CDT	Tornado Warning	DVN	Henry, Louisa	34 min
Jun 8, 6:48 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines	42 min
Jun 7, 11:41 PM CDT	Severe Thunderstorm Warning	DVN	Whiteside	49 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.