Alert archive / Missouri / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 10, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jan 21, 1999, 1:11 PM CST for Madison County, Saint Francois County, Missouri. It was in force for 49 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
- Jan 21, 1999, 1:11 PM CST (19:11 UTC)
- Expired
- Jan 21, 1999, 2:00 PM CST
- In force
- 49 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Madison County, MO, Saint Francois County, MO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 21, 1:30 PM CST | Hail 0.75 | Marquand, 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, 7.2 hours before the alert went out and 311 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
- 911 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 533 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 239 m²/s²
- 0-3 km storm-relative helicity
- 287 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.2
The text
As transmitted, in the capitals the NWS used until 2016.
999 WUUS1 KSTL 211909 RRA SVRSTL MOC123-187-212000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 111 PM CST THU JAN 21 1999 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN MADISON COUNTY MISSOURI IN SOUTHEASTERN MISSOURI SOUTHERN ST FRANCOIS COUNTY IN EAST CENTRAL MISSOURI * UNTIL 200 PM CST * AT 110 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES SOUTHWEST OF FREDERICKTOWN... MOVING NORTHEAST AT 35 MPH. * LOCATIONS THAT WILL BE AFFECTED... FREDERICKTOWN KNOB LICK 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. FG/DB
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, Jan 21, 9:50 AM CST, 3 hours 21 minutes before
MOZ042-041-050-010-048-072-062-059-084-018-019-052-085-027-047- 051-034-049-036-035-099-061-075-074-063-064-009-026-060-073-ILZ095- 064-096-098-069-065-058-099-059-100-070-102-060-097-079-101-074- MOZ065-221200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 950 AM CST THU JAN 21 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. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY AND TONIGHT ACROSS SOUTHERN SECTIONS OF THE COUNTY WARNING AREA...GENERALLY SOUTH OF A LINE FROM JEFFERSON CITY TO BELLEVILLE. STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD KEEP ADVISED OF THE LATEST FORECASTS...AND MONITOR LATER WEATHER INFORMATION FOR POSSIBLE SKYWARN ACTION. GKS
Special weather statement, Jan 21, 10:16 AM CST, 2 hours 55 minutes before
MOZ063-211635- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1016 AM CST THU JAN 21 1999 ...TEST....TEST....TEST....
Special weather statement, Jan 21, 10:17 AM CST, 2 hours 54 minutes before
MOZ062-211635- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1017 AM CST THU JAN 21 1999 TEST...TEST....TEST...THIS IS A TEST// RP
Special weather statement, Jan 21, 10:25 AM CST, 2 hours 46 minutes before
MOZ062-211645- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1025 AM CST THU JAN 21 1999 THIS IS A TEST.....THIS IS A TEST....THIS IS A TEST... THIS IS ONLY A TEST... RP
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 21, 9:56 AM CST | Severe Thunderstorm Warning | LSX | Osage | 49 min |
| Jan 21, 10:13 AM CST | Severe Thunderstorm Warning | LSX | Gasconade | 47 min |
| Jan 21, 10:39 AM CST | Severe Thunderstorm Warning | LSX | Moniteau | 46 min |
| Jan 21, 11:04 AM CST | Severe Thunderstorm Warning | LSX | Montgomery | 46 min |
| Jan 21, 11:43 AM CST | Severe Thunderstorm Warning | LSX | Lincoln | 47 min |
| Jan 21, 11:45 AM CST | Severe Thunderstorm Warning | LSX | Boone | 45 min |
| Jan 21, 12:01 PM CST | Severe Thunderstorm Warning | LSX | Audrain, Monroe | 49 min |
| Jan 21, 12:51 PM CST | Severe Thunderstorm Warning | LSX | Audrain, Boone | 34 min |
| Jan 21, 1:04 PM CST | Severe Thunderstorm Warning | LSX | Monroe | 46 min |
| Jan 21, 5:41 PM CST | Severe Thunderstorm Warning | LSX | Madison | 49 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.