Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 66, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 27, 1998, 4:48 PM CDT for Saint Louis County, Missouri. It was in force for 47 min. 2 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
- Apr 27, 1998, 4:48 PM CDT (21:48 UTC)
- Expired
- Apr 27, 1998, 5:35 PM CDT
- In force
- 47 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Saint Louis County, MO
The radar
The St Louis radar (KLSX), 22 km from the middle of the area, began a volume at 21:52 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 27, 4:55 PM CDT | Hail 1.75 | Des Peres, MO | Amateur radio spotters reported golfball size hail at Interstate 270 and Manchester Road. |
| Apr 27, 5:06 PM CDT | Hail 1 | Creve Coeur, MO | A local meteorology company reported 1 inch hail covering their parking lot. |
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 12:00Z, 9.8 hours before the alert went out and 231 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2012 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
705 WUUS1 KSTL 272149 RRA SVRSTL MOC189-272235- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 448 PM CDT MON APR 27 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN ST LOUIS COUNTY IN EAST CENTRAL MISSOURI * UNTIL 535 PM CDT * AT 445 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM JUST WEST OF WEBSTER GROVES... MOVING NORTHEAST AT 25 MPH. * LOCATIONS THAT WILL BE AFFECTED... CLAYTON AT 500 PM FLORISSANT AT 510 PM 2 INCH DIAMTER HAIL WAS REPORTED IN FENTON AT 435 PM. THIS STORM HAS A HISTORY OF DAMAGING HAIL. STAY INSIDE AND AWAY FROM WINDOWS. GKS/VA &
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, Apr 27, 11:00 AM CDT, 5 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>075-084-085-099-281000- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1100 AM CDT MON APR 27 1998 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. SEVERE THUNDERSTORMS ARE NOT EXPECTED ACROSS THE AREA TODAY OR TONIGHT. THE EXTREME SOUTHERN AREAS WILL BE CLOSE TO SEVERE THUNDERSTORMS WHICH COULD DEVELOP IN THE SOUTHERN QUARTER OF MISSOURI...BUT THE REST OF THE AREA APPEARS TO BE SAFE. PEDIGO
Special weather statement, Apr 27, 11:00 AM CDT, 5 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>075-084-085-099-281000- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1100 AM CDT MON APR 27 1998 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. SEVERE THUNDERSTORMS ARE NOT EXPECTED ACROSS THE AREA TODAY OR TONIGHT. THE EXTREME SOUTHERN AREAS WILL BE CLOSE TO SEVERE THUNDERSTORMS WHICH COULD DEVELOP IN THE SOUTHERN QUARTER OF MISSOURI...BUT THE REST OF THE AREA APPEARS TO BE SAFE. PEDIGO
Special weather statement, Apr 27, 2:30 PM CDT, 2 hours 18 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>075-084-085-099-281000- SEVERE WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE ST LOUIS MO 230 PM CDT MON APR 27 1998 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. IT NOW APPEARS THAT SEVERE THUNDERSTORMS COULD DRIFT A LITTLE FURTHER NORTH INTO MISSOURI. THEREFORE THERE WILL BE A SLIGHT CHANCE FOR SEVERE STORMS TO DEVELOP SOUTH OF A LINE FROM COLUMBIA TO ST LOUIS TO CARBONDALE ILLINOIS. THE GREATEST THREAT OF SEVERE WEATHER IS PRIMARILY DUE TO HAIL. SPOTTER ACTIVATION COULD BE REQUIRED AT ANY TIME ACROSS SOUTHERN MISSOURI THIS AFTERNOON OR TONIGHT. PEDIGO
Special weather statement, Apr 27, 2:30 PM CDT, 2 hours 18 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>075-084-085-099-281000- SEVERE WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE ST LOUIS MO 230 PM CDT MON APR 27 1998 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. IT NOW APPEARS THAT SEVERE THUNDERSTORMS COULD DRIFT A LITTLE FURTHER NORTH INTO MISSOURI. THEREFORE THERE WILL BE A SLIGHT CHANCE FOR SEVERE STORMS TO DEVELOP SOUTH OF A LINE FROM COLUMBIA TO ST LOUIS TO CARBONDALE ILLINOIS. THE GREATEST THREAT OF SEVERE WEATHER IS PRIMARILY DUE TO HAIL. SPOTTER ACTIVATION COULD BE REQUIRED AT ANY TIME ACROSS SOUTHERN MISSOURI THIS AFTERNOON OR TONIGHT. PEDIGO
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 3:01 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 44 min |
| Apr 27, 3:39 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 46 min |
| Apr 27, 4:26 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis | 49 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 1998Every severe thunderstorm warning in 1998
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.