Alert archive / Illinois / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 343, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 6, 2000, 6:07 AM CDT for Adams County, Illinois; Lewis County, Missouri. 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
- Aug 6, 2000, 6:07 AM CDT (11:07 UTC)
- Expired
- Aug 6, 2000, 6:45 AM CDT
- In force
- 38 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Adams County, IL, Lewis County, MO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 6, 6:09 AM CDT | Hail 1 | La Grange, MO | Storm spotters reported 1 inch hail. |
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, 11.1 hours before the alert went out and 190 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
- 1252 J/kg
- Mixed-layer CIN
- -143 J/kg
- Mixed-layer LCL
- 758 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 241 m²/s²
- 0-3 km storm-relative helicity
- 300 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 7.2
The text
As transmitted, in the capitals the NWS used until 2016.
766 WUUS53 KLSX 061108 SVRSTL ILC001-MOC111-061145- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 607 AM CDT SUN AUG 6 2000 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN LEWIS COUNTY IN NORTHEAST MISSOURI NORTHERN ADAMS COUNTY IN WEST CENTRAL ILLINOIS * UNTIL 645 AM CDT * AT 607 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER LA GRANGE...MOVING EAST AT 30 MPH. * LOCATIONS IN THE PATH... QUINCY MENDON CAMP POINT GOLDEN 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 4010 9165 3992 9164 3991 9092 4016 9093
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 6:45 AM CDT | Severe Thunderstorm Warning | LSX | Adams | 30 min |
| Aug 6, 12:44 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 46 min |
| Aug 6, 4:23 PM CDT | Severe Thunderstorm Warning | LSX | Fayette | 52 min |
| Aug 6, 6:28 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 47 min |
| Aug 6, 6:41 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette | 34 min |
| Aug 6, 6:56 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 34 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2000Severe Thunderstorm Warnings in Missouri, 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.