Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 281, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 29, 1998, 5:34 AM CDT for Saint Louis County, City of Saint Louis, Missouri. It was in force for 46 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
- Jun 29, 1998, 5:34 AM CDT (10:34 UTC)
- Expired
- Jun 29, 1998, 6:20 AM CDT
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
The radar
The St Louis radar (KLSX), 32 km from the middle of the area, began a volume at 10:36 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 29, 6:00 AM CDT | Thunderstorm Wind 54 | Richmond Hgts, 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
Lincoln, IL (KILX), launched 00:00Z, 10.6 hours before the alert went out and 224 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
- 3145 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1452 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 6.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 291034 RRA SVRSTL MOC189-510-291120- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 534 AM CDT MON JUN 29 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI ST. LOUIS CITY IN EAST CENTRAL MISSOURI * UNTIL 620 AM CDT * AT 534 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM NORTH OF ST PETERS TO NEAR DEFIANCE... MOVING EAST-SOUTHEAST AT 40 MPH. * LOCATIONS THAT WILL BE AFFECTED... CHESTERFIELD CLAYTON ST LOUIS CITY THE PRIMARY SEVERE WEATHER THREAT IS DAMAGING WINDS. MOVE QUICKLY TO A STURDY BUILDING AND STAY AWAY FROM DOORS AND WINDOWS. TRUETT
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 29, 4:21 AM CDT, 1 hour 13 minutes before
ILZ058>060-095>099-MOZ009-010-018-019-026-027-034>036-042-052-290945- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 421 AM CDT MON JUN 29 1998 ...SEVERE THUNDERSTORM WATCH CONTINUES FOR A SMALL PART OF CENTRAL AND EAST CENTRAL MISSOURI... THE SEVERE THUNDERSTORM WATCH CONTINUES UNTIL 6 AM FOR AUDRAIN...LINCOLN...MONROE...PIKE AND RALLS COUNTIES IN MISSOURI. HOWEVER...THE WATCH IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES... IN MISSOURI....SCOTLAND...CLARK...KNOX...LEWIS...SHELBY...MARION IN ILLINOIS...ADAMS...BROWN...PIKE....CALHOUN...GREENE...JERSEY... MACOUPIN...AND MONTGOMERY TRUETT
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 7:40 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 45 min |
| Jun 28, 11:40 PM CDT | Severe Thunderstorm Warning | LSX | Knox, Scotland | 45 min |
| Jun 29, 12:05 AM CDT | Flash Flood Warning | LSX | Lewis | 4 hr |
| Jun 29, 5:17 AM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles, Warren | 48 min |
| Jun 29, 3:37 PM CDT | Severe Thunderstorm Warning | LSX | Clark | 48 min |
| Jun 29, 3:43 PM CDT | Severe Thunderstorm Warning | LSX | Scotland | 47 min |
| Jun 29, 4:11 PM CDT | Flash Flood Warning | LSX | Clark, Scotland | 3 hr |
| Jun 29, 4:30 PM CDT | Severe Thunderstorm Warning | LSX | Clark, Knox, Lewis, Scotland | 65 min |
| Jun 29, 4:51 PM CDT | Flash Flood Warning | LSX | Lewis | 3 hr |
| Jun 29, 6:34 PM CDT | Severe Thunderstorm Warning | LSX | Clark | 51 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.