Alert archive / Illinois / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 141, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 12, 2000, 5:02 PM CDT for Jersey County, Macoupin County, Illinois. It was in force for 48 min. 4 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
- May 12, 2000, 5:02 PM CDT (22:02 UTC)
- Expired
- May 12, 2000, 5:50 PM CDT
- In force
- 48 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Jersey County, IL, Macoupin County, IL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 12, 5:05 PM CDT | Hail 1 | Brighton, IL | |
| May 12, 5:11 PM CDT | Hail 1 | Shipman, IL | |
| May 12, 5:20 PM CDT | Hail 2 | Woodburn, IL | |
| May 12, 5:30 PM CDT | Hail 2 | Bunker Hill, 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 |
|---|---|---|---|
| May 12, 4:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.0 hours before the alert went out and 171 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
- 2035 J/kg
- Mixed-layer CIN
- -305 J/kg
- Mixed-layer LCL
- 1023 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 283 m²/s²
- 0-3 km storm-relative helicity
- 282 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.3
The text
As transmitted, in the capitals the NWS used until 2016.
485 WUUS53 KLSX 122202 SVRSTL ILC083-117-122250- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 502 PM CDT FRI MAY 12 2000 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN JERSEY COUNTY IN SOUTHWESTERN ILLINOIS SOUTHERN MACOUPIN COUNTY IN SOUTHWESTERN ILLINOIS * UNTIL 550 PM CDT * AT 459 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM FROM NEAR MEDORA TO JUST WEST OF BRIGHTON... MOVING NORTHEAST 35 MPH. * LOCATIONS THAT WILL BE AFFECTED... PIASA SHIPMAN PLAINVIEW 1 INCH HAIL WAS REPORTED NEAR MEDORA THIS STORM HAS A HISTORY OF DAMAGING HAIL. STAY INSIDE AND AWAY FROM WINDOWS. RP/ST/GKS &
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 3:41 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene | 49 min |
| May 12, 4:09 PM CDT | Severe Thunderstorm Warning | LSX | Jersey | 51 min |
| May 12, 4:30 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 50 min |
| May 12, 4:42 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 48 min |
| May 12, 5:42 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 58 min |
| May 12, 6:01 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Madison | 64 min |
| May 12, 6:05 PM CDT | Tornado Warning | LSX | Bond, Madison | 50 min |
| May 12, 6:49 PM CDT | Tornado Warning | LSX | Fayette | 51 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.