Alert archive / Illinois / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 347, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 6, 2000, 6:28 PM CDT for Madison County, Saint Clair County, Illinois. It was in force for 47 min. 3 reports 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, 6:28 PM CDT (23:28 UTC)
- Expired
- Aug 6, 2000, 7:15 PM CDT
- In force
- 47 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Madison County, IL, Saint Clair County, IL
The radar
The St Louis radar (KLSX), 68 km from the middle of the area, began a volume at 23:31 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 6, 6:30 PM CDT | Hail 0.75 | Belleville, IL | |
| Aug 6, 6:32 PM CDT | Hail 0.75 | Belleville, IL | |
| Aug 6, 6:35 PM CDT | Hail 1.25 | Fairview Hgts, IL | The local news media reported half dollar size 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
Lincoln, IL (KILX), launched 12:00Z, 11.5 hours before the alert went out and 195 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
- 1269 J/kg
- Mixed-layer CIN
- -182 J/kg
- Mixed-layer LCL
- 1212 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 187 m²/s²
- 0-3 km storm-relative helicity
- 204 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 13.4
The text
As transmitted, in the capitals the NWS used until 2016.
274
WUUS53 KLSX 062329
SVRSTL
ILC119-163-070015-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
628 PM CDT SUN AUG 6 2000
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN MADISON COUNTY IN SOUTHWEST ILLINOIS
NORTHERN ST. CLAIR COUNTY IN SOUTHWEST ILLINOIS
* UNTIL 715 PM CDT
* AT 628 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM OVER FAIRVIEW HEIGHTS...MOVING NORTHEAST AT 30
MPH.
* LOCATIONS IN THE PATH...
OFALLON
LEBANON
TROY
ST. JACOB
MARINE
HIGHLAND
BELLEVILLE
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 3860 9017 3845 9004 3866 8970 3867 8960
3900 8965 3898 8990 3871 8992
GKSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 6:07 AM CDT | Severe Thunderstorm Warning | LSX | Adams | 38 min |
| 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, 6:41 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, 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.