Alert archive / Illinois / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 178, NWS Lincoln, IL

November 10, 2002Clay County, Jasper County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Nov 10, 2002, 12:30 PM CST for Clay County, Jasper County, Illinois. It was in force for 60 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Nov 10, 2002, 12:30 PM CST (18:30 UTC)
Expired: Nov 10, 2002, 1:30 PM CST
In force: 60 min
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

Counties Clay County, IL, Jasper County, IL

What was reported inside it

Time	Report	Where	Remark
Nov 10, 12:30 PM CST	Hail 0.75	Bible Grove, IL
Nov 10, 12:45 PM CST	Hail 0.75	Newton, IL

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Nov 10, 11:10 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 6.5 hours before the alert went out and 143 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: 302 J/kg
Mixed-layer CIN: -194 J/kg
Mixed-layer LCL: 836 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 62 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 10, 11:39 AM CST	Tornado Warning	ILX	Clark, Coles, Edgar	66 min
Nov 10, 11:48 AM CST	Tornado Warning	ILX	Cumberland	57 min
Nov 10, 11:48 AM CST	Tornado Warning	ILX	Cumberland	57 min
Nov 10, 1:12 PM CST	Severe Thunderstorm Warning	ILX	Crawford	63 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.