Alert archive / Illinois / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 403, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 17, 2000, 9:43 PM CDT for Clinton County, Marion County, Illinois. It was in force for 47 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
- Aug 17, 2000, 9:43 PM CDT (02:43 UTC)
- Expired
- Aug 17, 2000, 10:30 PM CDT
- In force
- 47 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Clinton County, IL, Marion County, IL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 17, 9:45 PM CDT | Thunderstorm Wind 60 E | Carlyle, IL |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 17, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 2.7 hours before the alert went out and 176 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.
- Mixed-layer CAPE
- 4438 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1011 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 3.1
- Supercell composite
- 18.2
The text
As transmitted, in the capitals the NWS used until 2016.
350 WUUS53 KLSX 180244 SVRSTL ILC027-121-180330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 943 PM CDT THU AUG 17 2000 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CLINTON COUNTY IN SOUTH CENTRAL ILLINOIS MARION COUNTY IN SOUTH CENTRAL ILLINOIS * UNTIL 1030 PM CDT * AT 943 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER CARLYLE...MOVING EAST AT 35 MPH. * LOCATIONS IN THE PATH... CARLYLE LAKE BOULDER SALEM KINMUNDY 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. THIS STORM HAS A HISTORY OF DAMAGING WINDS. TAKE SHELTER IN A STURDY BUILDING IMMEDIATELY. LAT...LON 3871 8959 3848 8950 3846 8871 3883 8873 RP
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 8:04 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 41 min |
| Aug 17, 8:20 PM CDT | Severe Thunderstorm Warning | LSX | Clinton | 40 min |
| Aug 17, 8:28 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Montgomery | 47 min |
| Aug 17, 8:29 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 46 min |
| Aug 17, 8:54 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 51 min |
| Aug 17, 8:58 PM CDT | Severe Thunderstorm Warning | LSX | Bond | 47 min |
| Aug 17, 9:15 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 45 min |
| Aug 17, 9:50 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 40 min |
| Aug 17, 10:25 PM CDT | Severe Thunderstorm Warning | LSX | Clinton | 50 min |
| Aug 17, 10:46 PM CDT | Severe Thunderstorm Warning | LSX | Bond | 44 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.