Alert archive / Illinois / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 50, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 7, 2000, 2:51 PM CDT for Monroe County, Illinois. It was in force for 54 min. 1 report 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, 2:51 PM CDT (19:51 UTC)
- Expired
- Apr 7, 2000, 3:45 PM CDT
- In force
- 54 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Monroe County, IL
The radar
The St Louis radar (KLSX), 64 km from the middle of the area, began a volume at 19:50 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, 3:10 PM CDT | Hail 1 | Waterloo, IL | Law enforcement personnel reported 1 inch hail near Waterloo. |
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 |
|---|---|---|---|
| Apr 7, 2:15 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 7.9 hours before the alert went out and 248 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
- 935 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 216 m²/s²
- 0-3 km storm-relative helicity
- 319 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
771 WUUS53 KLSX 071951 SVRSTL ILC133-072045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 251 PM CDT FRI APR 7 2000 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MONROE COUNTY ILLINOIS IN SOUTHWESTERN ILLINOIS * UNTIL 345 PM CDT * AT 250 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WEST OF FESTUS... MOVING EAST AT 40 MPH. * LOCATIONS THAT WILL BE AFFECTED... VALMEYER MONROE CITY MAEYSTOWN BURKSVILLE WATERLOO THE PRIMARY SEVERE WEATHER THREAT IS DAMAGING HAIL. LARGE HAIL CAN CAUSE EXTENSIVE PROPERTY DAMAGE AN SERIOUS INJURY TO PEOPLE CAUGHT OUTDOORS. MOVE INSIDE A STURDY BUILDING IMMEDIATELY. GKS/FG
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 12:07 AM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 53 min |
| 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, 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.