Alert archive / Illinois / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 20, NWS Lincoln, IL

April 19, 2002Macon County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Apr 19, 2002, 7:25 PM CDT for Macon County, Illinois. It was in force for 65 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 19, 2002, 7:25 PM CDT (00:25 UTC)
Expired
Apr 19, 2002, 8:30 PM CDT
In force
65 min
Issued by
NWS Lincoln, IL
Area
Counties, with a storm outline in the text

County Macon County, IL

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 19, 5:30 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.4 hours before the alert went out and 39 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-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2002-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 49 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2002-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
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
49 J/kg
Mixed-layer CIN
-173 J/kg
Mixed-layer LCL
1566 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
186 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KILX 200025
SVRSPI
ILC115-200130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
725 PM CDT FRI APR 19 2002

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MACON COUNTY IN CENTRAL ILLINOIS

* UNTIL 830 PM CDT

* AT 725 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER DECATUR...MOVING NORTHEAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  OREANA
  MAROA
  ARGENTA

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.

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 3990 8907 3978 8894 3979 8876 4006 8877
          4006 8903

AUTEN

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 19, 7:03 PM CDTSevere Thunderstorm WarningILXChampaign, Douglas42 min
Apr 19, 7:19 PM CDTTornado WarningILXChampaign56 min
Apr 19, 7:25 PM CDTSevere Thunderstorm WarningILXCass50 min
Apr 19, 7:29 PM CDTSevere Thunderstorm WarningILXPiatt46 min
Apr 19, 7:54 PM CDTSevere Thunderstorm WarningILXMenard, Sangamon66 min
Apr 19, 7:55 PM CDTFlash Flood WarningILXChampaign, Douglas6 hr
Apr 19, 8:05 PM CDTSevere Thunderstorm WarningILXChampaign, Douglas55 min
Apr 19, 8:37 PM CDTFlash Flood WarningILXVermilion5 hr
Apr 19, 8:43 PM CDTSevere Thunderstorm WarningILXChristian62 min
Apr 19, 8:45 PM CDTFlash Flood WarningILXPiatt5 hr
Apr 19, 8:46 PM CDTFlash Flood WarningILXPiatt, Sangamon5 hr
Apr 19, 8:47 PM CDTFlash Flood WarningILXPiatt5 hr
Apr 19, 8:49 PM CDTFlash Flood WarningILXSangamon5 hr
Apr 19, 8:53 PM CDTSevere Thunderstorm WarningILXLogan, Macon, Sangamon52 min
Apr 19, 9:00 PM CDTFlash Flood WarningILXChristian, Macon5 hr
Apr 19, 9:31 PM CDTFlash Flood WarningILXDeWitt, Logan4 hr
Apr 20, 2:09 AM CDTFlash Flood WarningILXChampaign, Douglas6 hr

Nearby

Severe Thunderstorm Warnings in Illinois, 2002Every 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.