Alert archive / Missouri / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 106, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 1, 1999, 5:48 PM CDT for Madison County, Missouri. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 1, 1999, 5:48 PM CDT (22:48 UTC)
- Expired
- Jun 1, 1999, 6:35 PM CDT
- In force
- 47 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Madison County, MO
The radar
The St Louis radar (KLSX), 139 km from the middle of the area, began a volume at 22:52 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 1, 5:30 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 10.8 hours before the alert went out and 313 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
- 20 J/kg
- Mixed-layer CIN
- -321 J/kg
- Mixed-layer LCL
- 1581 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 261 m²/s²
- 0-3 km storm-relative helicity
- 270 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jun 1, 1:00 PM CDT, 4 hours 48 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026- 027-034>036-041-042-047>052-059>065-072>075-084-085-099-012300- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 100 PM CDT TUE JUN 1 1999 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. AREAS INCLUDED ARE PORTIONS OF NORTHEAST...CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE ENTIRE WARNING AREA FOR THIS AFTERNOON AND TONIGHT. EMERGENCY MANAGERS AND STORM SPOTTER GROUPS SHOULD BE PREPARED FOR POSSIBLE SKYWARN ACTIVATION THIS AFTERNOON AND TONIGHT.@ VA
Special weather statement, Jun 1, 1:00 PM CDT, 4 hours 48 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026- 027-034>036-041-042-047>052-059>065-072>075-084-085-099-012300- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 100 PM CDT TUE JUN 1 1999 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. AREAS INCLUDED ARE PORTIONS OF NORTHEAST...CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE ENTIRE WARNING AREA FOR THIS AFTERNOON AND TONIGHT. EMERGENCY MANAGERS AND STORM SPOTTER GROUPS SHOULD BE PREPARED FOR POSSIBLE SKYWARN ACTIVATION THIS AFTERNOON AND TONIGHT.@ VA
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 3:17 PM CDT | Severe Thunderstorm Warning | LSX | Shelby | 48 min |
| Jun 1, 3:27 PM CDT | Severe Thunderstorm Warning | LSX | Lewis | 48 min |
| Jun 1, 3:37 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 48 min |
| Jun 1, 3:44 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 51 min |
| Jun 1, 4:06 PM CDT | Severe Thunderstorm Warning | LSX | Shelby | 34 min |
| Jun 1, 4:12 PM CDT | Tornado Warning | LSX | Cole | 48 min |
| Jun 1, 4:19 PM CDT | Severe Thunderstorm Warning | LSX | Ralls | 51 min |
| Jun 1, 4:24 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway | 51 min |
| Jun 1, 4:33 PM CDT | Severe Thunderstorm Warning | LSX | Lewis | 47 min |
| Jun 1, 5:01 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Osage | 49 min |
| Jun 1, 5:11 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Reynolds | 49 min |
| Jun 1, 5:22 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 48 min |
| Jun 1, 5:49 PM CDT | Tornado Warning | LSX | Lincoln | 51 min |
| Jun 1, 6:34 PM CDT | Tornado Warning | LSX | Crawford | 51 min |
| Jun 1, 6:44 PM CDT | Severe Thunderstorm Warning | LSX | Franklin | 51 min |
| Jun 1, 6:50 PM CDT | Tornado Warning | LSX | Franklin | 50 min |
| Jun 1, 3:57 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 48 min |
| Jun 1, 4:43 PM CDT | Tornado Warning | LSX | Brown | 47 min |
| Jun 1, 5:31 PM CDT | Tornado Warning | LSX | Brown | 49 min |
| Jun 1, 6:09 PM CDT | Tornado Warning | LSX | Pike | 51 min |
| Jun 1, 6:31 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 49 min |
| Jun 1, 6:47 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 33 min |
| Jun 1, 6:55 PM CDT | Tornado Warning | LSX | Montgomery | 35 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 1999Every severe thunderstorm warning in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.