Alert archive / Missouri / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 166, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 27, 1999, 1:09 PM CDT for Crawford County, Missouri. It was in force for 46 min. 3 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
- Jun 27, 1999, 1:09 PM CDT (18:09 UTC)
- Expired
- Jun 27, 1999, 1:55 PM CDT
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Crawford County, MO
The radar
The St Louis radar (KLSX), 97 km from the middle of the area, began a volume at 18:12 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 |
|---|---|---|---|
| Jun 27, 1:20 PM CDT | Thunderstorm Wind 53 | Cuba, MO | |
| Jun 27, 1:25 PM CDT | Thunderstorm Wind 56 | Cuba, MO | |
| Jun 27, 1:30 PM CDT | Thunderstorm Wind 56 | Steelville, MO |
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
Springfield, MO (KSGF), launched 12:00Z, 6.2 hours before the alert went out and 251 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
- 1135 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 826 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.1
The text
As transmitted, in the capitals the NWS used until 2016.
371 WUUS1 KSTL 271809 RRA SVRSTL MOC055-271855- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 109 PM CDT SUN JUN 27 1999 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CRAWFORD COUNTY IN CENTRAL MISSOURI * UNTIL 155 PM CDT * AT AT 105 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM BETWEEN VICHY AND ROLLA... MOVING TO THE EAST AT 35 MPH. * LOCATIONS THAT WILL BE AFFECTED... STEELVILLE CUBA WIND GUSTS OF 58 MPH WAS REPORTED AT VICHY AT 100 PM SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND GUSTS IN EXCESS OF 60 MPH...DAMAGING HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OR YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. VA/RP
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 27, 10:49 AM CDT, 2 hours 20 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>075-084-085-099-272300- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1130 AM CDT SUN JUN 27 1999 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NWS OFFICE IN ST. LOUIS. AREAS INCLUDED ARE PARTS OF CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS. SCATTERED SHOWERS AND THUNDERSTORMS ARE FORECAST ACROSS THE AREA THIS AFTERNOON AND TONIGHT...ALSO THUNDERSTORM ACTIVITY IS NOT EXPECTED TO BECOME SEVERE. SKYWARN ACTIVATION SHOULD NOT BE REQUIRED.
Special weather statement, Jun 27, 11:30 AM CDT, 1 hour 39 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>075-084-085-099-272300- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1130 AM CDT SUN JUN 27 1999 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NWS OFFICE IN ST. LOUIS. AREAS INCLUDED ARE PARTS OF CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS. SCATTERED SHOWERS AND THUNDERSTORMS ARE FORECAST ACROSS THE AREA THIS AFTERNOON AND TONIGHT...ALSO THUNDERSTORM ACTIVITY IS NOT EXPECTED TO BECOME SEVERE. SKYWARN ACTIVATION SHOULD NOT BE REQUIRED.
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 1:34 PM CDT | Severe Thunderstorm Warning | LSX | Franklin | 46 min |
| Jun 27, 1:58 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Reynolds, Washington | 47 min |
| Jun 27, 2:40 PM CDT | Severe Thunderstorm Warning | LSX | Saint Francois | 45 min |
| Jun 27, 2:54 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Madison | 31 min |
| Jun 27, 2:54 PM CDT | Severe Thunderstorm Warning | LSX | Reynolds | 31 min |
| Jun 27, 3:32 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 33 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.