Alert archive / Illinois / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 421, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 23, 2000, 8:25 PM CDT for Macoupin County, Montgomery County, Illinois. It was in force for 50 min. 2 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 23, 2000, 8:25 PM CDT (01:25 UTC)
- Expired
- Aug 23, 2000, 9:15 PM CDT
- In force
- 50 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Macoupin County, IL, Montgomery County, IL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 23, 9:10 PM CDT | Hail 0.88 | Witt, IL | |
| Aug 23, 9:20 PM CDT | Hail 2.75 | Irving, 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, 1.4 hours before the alert went out and 118 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
- 1082 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 1541 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KLSX 240126 SVRSTL ILC117-135-240215- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 825 PM CDT WED AUG 23 2000 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN MACOUPIN COUNTY IN CENTRAL ILLINOIS NORTHERN MONTGOMERY COUNTY IN CENTRAL ILLINOIS * UNTIL 915 PM CDT * AT 825 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER FARMERSVILLE...WITH A SECOND INTENSE STORM ABOUT 5 MILES NORTHWEST OF GIRARD. BOTH OF THESE STORMS WERE MOVING SOUTHEAST AT 30 MPH. * LOCATIONS IN THE PATH... RAYMOND WITT NOKOMIS GIRARD 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 3961 8980 3947 8993 3910 8931 3928 8914 TRUETT
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 8:44 PM CDT | Tornado Warning | LSX | Montgomery | 46 min |
| Aug 23, 9:29 PM CDT | Tornado Warning | LSX | Montgomery | 31 min |
| Aug 23, 9:43 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette | 62 min |
| Aug 23, 10:19 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 56 min |
| Aug 23, 10:58 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 47 min |
| Aug 23, 11:16 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Montgomery | 59 min |
| Aug 23, 11:21 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 54 min |
| Aug 23, 11:28 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 62 min |
| Aug 23, 11:51 PM CDT | Severe Thunderstorm Warning | LSX | Jersey | 39 min |
| Aug 24, 12:09 AM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 66 min |
| Aug 24, 12:11 AM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 49 min |
| Aug 24, 12:27 AM CDT | Flash Flood Warning | LSX | Bond, Fayette, Macoupin, Marion, Montgomery | 6 hr |
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.