Alert archive / Illinois / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 36, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 7, 2000, 12:07 AM CDT for Madison County, Saint Clair County, Illinois. It was in force for 53 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 7, 2000, 12:07 AM CDT (05:07 UTC)
- Expired
- Apr 7, 2000, 1:00 AM CDT
- In force
- 53 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Madison County, IL, Saint Clair County, IL
The radar
The St Louis radar (KLSX), 67 km from the middle of the area, began a volume at 05:16 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 |
|---|---|---|---|
| Apr 7, 12:18 AM CDT | Hail 0.75 | Fairmont City, IL | |
| Apr 7, 12:20 AM CDT | Hail 1.75 | Fairmont City, 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 nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 5.1 hours before the alert went out and 202 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2331 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KLSX 070507 SVRSTL ILC119-163-070600- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 1207 AM CDT FRI APR 7 2000 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MADISON COUNTY ILLINOIS IN SOUTHWESTERN ILLINOIS NORTHERN ST CLAIR COUNTY IN SOUTHWESTERN ILLINOIS * UNTIL 100 AM CDT * AT 1205 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM ST LOUIS CITY... MOVING NORTHEAST AT 35 MPH. * LOCATIONS THAT WILL BE AFFECTED... EAST ST LOUIS COLLINSVILLE WASHINGTON PARK BROOKLYN TROY THIS STORM HAS A HISTORY OF DAMAGING HAIL. STAY INSIDE AND AWAY FROM WINDOWS. GKS/MB
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 7:01 AM CDT | Severe Thunderstorm Warning | LSX | Jersey | 34 min |
| Apr 7, 7:49 AM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Madison | 46 min |
| Apr 7, 8:10 AM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 50 min |
| Apr 7, 8:32 AM CDT | Severe Thunderstorm Warning | LSX | Fayette | 48 min |
| Apr 7, 2:20 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 55 min |
| Apr 7, 2:43 PM CDT | Severe Thunderstorm Warning | LSX | Clinton | 62 min |
| Apr 7, 2:50 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 55 min |
| Apr 7, 2:51 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 54 min |
| Apr 7, 3:10 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 50 min |
| Apr 7, 3:13 PM CDT | Severe Thunderstorm Warning | LSX | Randolph, Saint Clair | 47 min |
| Apr 7, 3:38 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Washington | 37 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.