Alert archive / Illinois / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 74, NWS Lincoln, IL

May 12, 2000Mason County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 12, 2000, 2:36 PM CDT for Mason County, Illinois. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
May 12, 2000, 2:36 PM CDT (19:36 UTC)
Expired
May 12, 2000, 3:15 PM CDT
In force
39 min
Issued by
NWS Lincoln, IL
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Mason County, IL

The watch it was issued in

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

IssuedProductOfficeLasted
May 12, 2:00 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.6 hours before the alert went out and 133 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 12:00Z on 2000-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2035 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 12:00Z on 2000-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 283 square meters per square second.1939587897Sfc1 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
2035 J/kg
Mixed-layer CIN
-305 J/kg
Mixed-layer LCL
1023 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
283 m²/s²
0-3 km storm-relative helicity
282 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.3

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KILX 121937
SVRSPI
ILC125-122015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
236 PM CDT FRI MAY 12 2000

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 315 PM CDT

* AT 236 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES SOUTHWEST OF BATH...OR ABOUT 10 MILES
  NORTHEAST OF BEARDSTOWN...MOVING NORTHEAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BATH
  KILBOURNE
  HAVANA

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 THE NEAREST LAW
ENFOR"CEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE. STAY
TUNED FOR LATER STATEMENTS.

LAT...LON 4013 9036 4005 9026 4016 8986 4040 8999
          4019 9018

HEDGES

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
May 12, 7:13 AM CDTSevere Thunderstorm WarningILXMason32 min
May 12, 7:31 AM CDTSevere Thunderstorm WarningILXTazewell44 min
May 12, 2:58 PM CDTTornado WarningILXCass, Mason, Menard47 min
May 12, 2:59 PM CDTSevere Thunderstorm WarningILXPeoria, Tazewell, Woodford46 min
May 12, 3:41 PM CDTTornado WarningILXMenard, Sangamon49 min
May 12, 3:44 PM CDTSevere Thunderstorm WarningILXWoodford46 min
May 12, 3:47 PM CDTSevere Thunderstorm WarningILXLogan, Mason58 min
May 12, 3:58 PM CDTTornado WarningILXLogan47 min
May 12, 4:12 PM CDTTornado WarningILXMcLean63 min
May 12, 4:26 PM CDTTornado WarningILXDeWitt49 min
May 12, 4:29 PM CDTSevere Thunderstorm WarningILXTazewell46 min
May 12, 4:35 PM CDTTornado WarningILXSangamon25 min
May 12, 4:40 PM CDTTornado WarningILXMacon50 min
May 12, 4:42 PM CDTSevere Thunderstorm WarningILXWoodford63 min
May 12, 4:46 PM CDTTornado WarningILXLogan29 min
May 12, 5:03 PM CDTSevere Thunderstorm WarningILXChristian42 min
May 12, 5:23 PM CDTTornado WarningILXChristian, Shelby67 min
May 12, 5:28 PM CDTTornado WarningILXPiatt62 min
May 12, 5:34 PM CDTTornado WarningILXMacon41 min
May 12, 5:36 PM CDTSevere Thunderstorm WarningILXChampaign39 min
May 12, 5:42 PM CDTTornado WarningILXMoultrie63 min
May 12, 6:05 PM CDTSevere Thunderstorm WarningILXVermilion55 min
May 12, 6:09 PM CDTSevere Thunderstorm WarningILXSangamon36 min
May 12, 6:10 PM CDTSevere Thunderstorm WarningILXChampaign50 min
May 12, 6:25 PM CDTSevere Thunderstorm WarningILXDouglas65 min
May 12, 6:32 PM CDTSevere Thunderstorm WarningILXShelby43 min
May 12, 6:39 PM CDTSevere Thunderstorm WarningILXChristian51 min
May 12, 6:52 PM CDTTornado WarningILXChampaign, Vermilion68 min
May 12, 6:54 PM CDTTornado WarningILXColes51 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2000Every severe thunderstorm warning in 2000

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.