Alert archive / Illinois / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 256, NWS St. Louis, MO

June 23, 2000Adams County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 23, 2000, 8:07 PM CDT for Adams County, Illinois. It was in force for 38 min. 1 report came from 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, with what was reported inside it.

The facts

Issued
Jun 23, 2000, 8:07 PM CDT (01:07 UTC)
Expired
Jun 23, 2000, 8:45 PM CDT
In force
38 min
Issued by
NWS St. Louis, MO
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Adams County, IL

The radar

The St Louis radar (KLSX), 154 km from the middle of the area, began a volume at 01:09 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.

What was reported inside it

TimeReportWhereRemark
Jun 23, 8:35 PM CDTThunderstorm Wind 52 EQuincy, ILLocal law enforcement reported trees down on the north side of town.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 1.1 hours before the alert went out and 187 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, Davenport, at 00:00Z on 2000-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 6 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, Davenport, at 00:00Z on 2000-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 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
6 J/kg
Mixed-layer CIN
-205 J/kg
Mixed-layer LCL
667 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
195 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 240108
SVRSTL
ILC001-240145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
807 PM CDT FRI JUN 23 2000

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

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

* UNTIL 845 PM CDT

* AT 807 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM 5 MILES NORTHWEST OF LIMA...MOVING 
  SOUTHEAST AT 35 MPH.

* LOCATIONS IN THE PATH...
  MENDON
  CAMP POINT
  GOLDEN
  CLAYTON
  QUINCY

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.

LAT...LON 4021 9094 4022 9151 3997 9147 3976 9138
          3976 9093(

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, 8:11 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, 3:43 PM CDTSevere Thunderstorm WarningLSXMontgomery47 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.