Alert archive / Illinois / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 272, NWS St. Louis, MO

June 24, 2000Montgomery County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 24, 2000, 3:43 PM CDT for Montgomery County, Illinois. It was in force for 47 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
Jun 24, 2000, 3:43 PM CDT (20:43 UTC)
Expired
Jun 24, 2000, 4:30 PM CDT
In force
47 min
Issued by
NWS St. Louis, MO
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Montgomery County, IL

The radar

The Lincoln radar (KILX), 85 km from the middle of the area, began a volume at 20:43 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 nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.7 hours before the alert went out and 114 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 2000-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 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 2000-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 178 square meters per square second.193958Sfc1 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
5 J/kg
Mixed-layer CIN
-319 J/kg
Mixed-layer LCL
1120 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
178 m²/s²
0-3 km storm-relative helicity
232 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 KLSX 242044
SVRSTL
ILC135-242130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
343 PM CDT SAT JUN 24 2000

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN MONTGOMERY COUNTY IN CENTRAL ILLINOIS

* UNTIL 430 PM CDT

* AT 343 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER RAYMOND...MOVING EAST AT 35 MPH.

* LOCATIONS IN THE PATH...
  RAYMOND
  WITT
  NOKOMIS

AT 315 PM CDT LAW ENFORCEMENT IN MACOUPIN COUNTY REPORTED DOWNED 
TREES AND POWER LINES IN CARLINVILLE ASSOCIATED WITH THIS STORM.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

& LAT...LON 3954 8972 3920 8971 3921 8916 3936 8915
          3936 8954 3954 8954

EL/RP/GKS

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 23, 7:12 PM CDTSevere Thunderstorm WarningLSXCalhoun48 min
Jun 23, 7:30 PM CDTSevere Thunderstorm WarningLSXJersey45 min
Jun 23, 7:43 PM CDTSevere Thunderstorm WarningLSXMacoupin47 min
Jun 23, 8:00 PM CDTSevere Thunderstorm WarningLSXCalhoun45 min
Jun 23, 8:07 PM CDTSevere Thunderstorm WarningLSXAdams38 min
Jun 23, 8:11 PM CDTSevere Thunderstorm WarningLSXMadison49 min
Jun 23, 8:17 PM CDTSevere Thunderstorm WarningLSXGreene, Jersey43 min
Jun 23, 8:45 PM CDTSevere Thunderstorm WarningLSXAdams45 min
Jun 23, 8:49 PM CDTSevere Thunderstorm WarningLSXCalhoun41 min
Jun 23, 8:59 PM CDTSevere Thunderstorm WarningLSXMadison46 min
Jun 23, 9:38 PM CDTSevere Thunderstorm WarningLSXMarion52 min
Jun 23, 9:49 PM CDTSevere Thunderstorm WarningLSXMadison41 min
Jun 23, 11:01 PM CDTSevere Thunderstorm WarningLSXMarion44 min
Jun 24, 1:59 AM CDTFlash Flood WarningLSXCalhoun, Clinton, Jersey, Madison, Marion, Saint Clair and 1 more4 hr
Jun 24, 5:20 AM CDTFlash Flood WarningLSXCalhoun, Clinton, Jersey, Madison, Marion, Saint Clair and 1 more4 hr
Jun 24, 9:00 AM CDTFlash Flood WarningLSXClinton, Marion, Saint Clair, Washington4 hr
Jun 24, 2:08 PM CDTSevere Thunderstorm WarningLSXMonroe, Saint Clair52 min
Jun 24, 2:51 PM CDTSevere Thunderstorm WarningLSXSaint Clair39 min
Jun 24, 3:13 PM CDTSevere Thunderstorm WarningLSXJersey, Macoupin47 min
Jun 24, 3:23 PM CDTSevere Thunderstorm WarningLSXClinton52 min
Jun 24, 3:36 PM CDTSevere Thunderstorm WarningLSXBond39 min
Jun 24, 3:52 PM CDTTornado WarningLSXClinton23 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; radar from the NEXRAD Level II archive.