Alert archive / Illinois / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 28, NWS Lincoln, IL

April 21, 2002Effingham County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Apr 21, 2002, 3:24 PM CDT for Effingham County, Illinois. It was in force for 51 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: Apr 21, 2002, 3:24 PM CDT (20:24 UTC)
Expired: Apr 21, 2002, 4:15 PM CDT
In force: 51 min
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

County Effingham County, IL

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 21, 11:00 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Apr 21, 2:15 PM CDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.4 hours before the alert went out and 118 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: 0 J/kg
Mixed-layer LCL: 417 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 504 m²/s²
0-3 km storm-relative helicity: 540 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 212024
SVRSPI
ILC049-212115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
324 PM CDT SUN APR 21 2002

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EFFINGHAM COUNTY IN SOUTH CENTRAL ILLINOIS

* UNTIL 415 PM CDT

* AT 324 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 7 MILES WEST OF ALTAMONT...OR ABOUT 13 MILES
  NORTHEAST OF VANDALIA...MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ALTAMONT
  BEECHER CITY
  SHUMWAY
  WATSON
  EFFINGHAM
  TEUTOPOLIS

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

A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES AT ANY TIME.

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 3919 8880 3892 8881 3894 8839 3908 8839
          3921 8849

SMITH
NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 21, 5:13 AM CDT	Flash Flood Warning	ILX	Douglas, Moultrie	6 hr
Apr 21, 5:30 AM CDT	Flash Flood Warning	ILX	Edgar	6 hr
Apr 21, 8:16 AM CDT	Flash Flood Warning	ILX	Christian	6 hr
Apr 21, 8:19 AM CDT	Flash Flood Warning	ILX	Christian	6 hr
Apr 21, 9:10 AM CDT	Flash Flood Warning	ILX	Coles	6 hr
Apr 21, 2:22 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence	38 min
Apr 21, 2:27 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence	33 min
Apr 21, 3:58 PM CDT	Severe Thunderstorm Warning	ILX	Clay	32 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; the sounding from the Mesonet's radiosonde archive.