Alert archive / Illinois / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 62, NWS Lincoln, IL

May 6, 2002Scott County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 6, 2002, 9:18 AM CDT for Scott County, Illinois. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 6, 2002, 9:18 AM CDT (14:18 UTC)
Expired: May 6, 2002, 10:00 AM CDT
In force: 42 min
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

County Scott County, IL

The radar

The St Louis radar (KLSX), 99 km from the middle of the area, began a volume at 14:20 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 6, 7:45 AM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 2.3 hours before the alert went out and 179 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: 1 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 445 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 346 m²/s²
0-3 km storm-relative helicity: 454 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KILX 061418
SVRSPI
ILC171-061500-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
918 AM CDT MON MAY 6 2002

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SCOTT COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL 1000 AM CDT

* AT 918 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 13 MILES WEST OF WINCHESTER...OR ABOUT 6 MILES
  EAST OF PITTSFIELD...MOVING EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WINCHESTER
  ALSEY
  MANCHESTER

THIS STORM IS CAPABLE OF PRODUCING WINDS IN EXCESS OF 60 MPH...AND 
VERY HEAVY RAIN. TAKE SHELTER IN A STURDY BUILDING AND STAY AWAY 
FROM WINDOWS.

REPORT SEVERE WEATHER OR ANY STORM DAMAGE TO YOUR LOCAL ESDA...OR THE
NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER
SERVICE. STAY TUNED FOR LATER STATEMENTS.

LAT...LON 3970 9074 3953 9080 3938 9023 3963 9031

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 5:11 AM CDT	Flash Flood Warning	ILX	Shelby	4 hr
May 6, 7:18 AM CDT	Flash Flood Warning	ILX	Coles	4 hr
May 6, 9:17 AM CDT	Flash Flood Warning	ILX	Morgan, Sangamon, Scott	6 hr
May 6, 10:12 AM CDT	Flash Flood Warning	ILX	Christian, Shelby	6 hr
May 6, 11:22 AM CDT	Flash Flood Warning	ILX	Crawford, Effingham, Jasper	6 hr
May 6, 2:41 PM CDT	Flash Flood Warning	ILX	Clay, Lawrence, Richland	6 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.