Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 301, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 22, 1998, 5:36 PM CDT for Osage County, Missouri. It was in force for 34 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
- Jul 22, 1998, 5:36 PM CDT (22:36 UTC)
- Expired
- Jul 22, 1998, 6:10 PM CDT
- In force
- 34 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Osage County, MO
The radar
The St Louis radar (KLSX), 106 km from the middle of the area, began a volume at 22:37 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 nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 10.6 hours before the alert went out and 243 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
- 730 J/kg
- Mixed-layer CIN
- -137 J/kg
- Mixed-layer LCL
- 1631 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
508 WUUS1 KSTL 222237 RRA SVRSTL MOC151-222310- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 536 PM CDT WED JUL 22 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... OSAGE COUNTY IN CENTRAL MISSOURI * UNTIL 610 PM CDT * AT 535 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES NORTH OF LINN MISSOURI ... MOVING EAST AT 10 MPH. . * LOCATIONS THAT WILL BE AFFECTED... CHAMOIS AT 545 PM CDT 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. RP /DF
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, Jul 22, 3:37 PM CDT, 1 hour 59 minutes before
ILZ058>060-064-065-069-070-074-079-098>102-MOZ052-060>065-072>075- 084-085-099-222300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 337 PM CDT WED JUL 22 1998 ...HEAT ADVISORY WILL BE ALLOWED TO EXPIRED FOR PORTIONS OF EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS THIS AFTERNOON... IT WAS ANOTHER HOT AND HUMID DAY ACROSS MUCH OF EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS. WEDNESDAY AFTERNOON TEMPERATURES REACHED INTO THE MIDDLE 90S WITH HEAT INDICES BETWEEN 105 AND 115 DEGREES. A COLD FRONT WILL MOVE ACROSS THE BI-STATE AREA TONIGHT AND THURSDAY WITH SCATTERED SHOWERS AND THUNDERSTORMS AND MORE CLOUD COVER EXPECTED. THURSDAY'S HIGH TEMPERATURES WILL LIKELY BE IN THE 80S ACROSS EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS. THUS...THE HEAT ADVISORY WILL BE ALLOWED TO EXPIRE LATE THIS AFTERNOON AND NOT RE-ISSUED AT THIS TIME. METZE
Special weather statement, Jul 22, 3:37 PM CDT, 1 hour 59 minutes before
ILZ058>060-064-065-069-070-074-079-098>102-MOZ052-060>065-072>075- 084-085-099-222300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 337 PM CDT WED JUL 22 1998 ...HEAT ADVISORY WILL BE ALLOWED TO EXPIRED FOR PORTIONS OF EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS THIS AFTERNOON... IT WAS ANOTHER HOT AND HUMID DAY ACROSS MUCH OF EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS. WEDNESDAY AFTERNOON TEMPERATURES REACHED INTO THE MIDDLE 90S WITH HEAT INDICES BETWEEN 105 AND 115 DEGREES. A COLD FRONT WILL MOVE ACROSS THE BI-STATE AREA TONIGHT AND THURSDAY WITH SCATTERED SHOWERS AND THUNDERSTORMS AND MORE CLOUD COVER EXPECTED. THURSDAY'S HIGH TEMPERATURES WILL LIKELY BE IN THE 80S ACROSS EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS. THUS...THE HEAT ADVISORY WILL BE ALLOWED TO EXPIRE LATE THIS AFTERNOON AND NOT RE-ISSUED AT THIS TIME. METZE
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 6:16 PM CDT | Severe Thunderstorm Warning | LSX | Gasconade | 34 min |
| Jul 22, 6:19 PM CDT | Severe Thunderstorm Warning | LSX | Franklin | 36 min |
| Jul 22, 6:35 PM CDT | Severe Thunderstorm Warning | LSX | Warren | 50 min |
| Jul 22, 6:41 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 49 min |
| Jul 22, 6:46 PM CDT | Severe Thunderstorm Warning | LSX | City of Saint Louis | 49 min |
| Jul 22, 6:56 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.