Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 55, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 15, 1998, 3:52 PM CDT for Osage County, Missouri. It was in force for 48 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
- Apr 15, 1998, 3:52 PM CDT (20:52 UTC)
- Expired
- Apr 15, 1998, 4:40 PM CDT
- In force
- 48 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 20:56 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 15, 3:55 PM CDT | Hail 0.75 | Freeburg, MO | 3/4 inch hail fell for about 10 minutes in Freeburg. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 15, 1:00 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 8.9 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
- 557 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 846 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 280 m²/s²
- 0-3 km storm-relative helicity
- 315 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 4.9
The text
As transmitted, in the capitals the NWS used until 2016.
846 WUUS1 KSTL 152051 RRA SVRSTL MOC151-152140- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 352 PM CDT WED APR 15 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN OSAGE COUNTY IN CENTRAL MISSOURI * UNTIL 440 PM CDT * AT 345 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM JUST WEST OF FREEBURG... MOVING EAST AT 25 MPH. * LOCATIONS THAT WILL BE AFFECTED... FREEBURG THIS IS A DANGEROUS STORM BE PREPARED FOR DAMAGING WINDS...HAIL... AND DEADLY LIGHTNING. STAY INDOORS AWAY FROM WINDOWS. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. ECKBERG
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 15, 11:00 AM CDT, 4 hours 52 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>075-084-085-099-152200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1100 AM CDT WED APR 15 1998 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. AREAS INCLUDED ARE PORTIONS OF NORTHEAST...CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND TONIGHT ACROSS THE SOUTHEERN PART OF THE WARNING AREA...GENERALLY SOUTH OF A LINE FROM TIPTON MISSOURI IN MONITEAU COUNTY TO WASHINGTON MISSOURI IN FRANKLIN COUNTY TO CENTRALIA ILLINOIS IN MARION COUNTY. THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND TONIGHT OVER THE REST OF THE WARNING AREA. STORM SPOTTER ACTIVATION WILL LIKELY BE REQUIRED THIS AFTERNOON. THIS AFTERNOON DAMAGING WINDS...LARGE HAIL...AND TORNADOES WILL BE A WIDESPREAD THREAT ACROSS MUCH OF THE SEVERE OUTLOOK AREA. THIS IS A POTENTIALLY DANGEROUS WEATHER SITUATION. PERSONS IN THE THREATENED AREAS ARE URGED TO REVIEW SEVERE WEATHER SAFETY RULES...AND LISTEN TO RADIO...TV...OR NOAA WEATHER RADIO FOR LATER WATCHES... WARNINGS AND STATEMENTS. AMS
Special weather statement, Apr 15, 11:00 AM CDT, 4 hours 52 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>075-084-085-099-152200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1100 AM CDT WED APR 15 1998 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. AREAS INCLUDED ARE PORTIONS OF NORTHEAST...CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND TONIGHT ACROSS THE SOUTHEERN PART OF THE WARNING AREA...GENERALLY SOUTH OF A LINE FROM TIPTON MISSOURI IN MONITEAU COUNTY TO WASHINGTON MISSOURI IN FRANKLIN COUNTY TO CENTRALIA ILLINOIS IN MARION COUNTY. THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND TONIGHT OVER THE REST OF THE WARNING AREA. STORM SPOTTER ACTIVATION WILL LIKELY BE REQUIRED THIS AFTERNOON. THIS AFTERNOON DAMAGING WINDS...LARGE HAIL...AND TORNADOES WILL BE A WIDESPREAD THREAT ACROSS MUCH OF THE SEVERE OUTLOOK AREA. THIS IS A POTENTIALLY DANGEROUS WEATHER SITUATION. PERSONS IN THE THREATENED AREAS ARE URGED TO REVIEW SEVERE WEATHER SAFETY RULES...AND LISTEN TO RADIO...TV...OR NOAA WEATHER RADIO FOR LATER WATCHES... WARNINGS AND STATEMENTS. AMS
Special weather statement, Apr 15, 2:55 PM CDT, 57 minutes before
MOZ049-059-062-065-072>074-084-099-152155- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 255 PM CDT WED APR 15 1998 ...TORNADO WATCH NUMBER 214 REMAINS IN EFFECT UNTIL 700 PM CDT... THE TORNADO WATCH ISSUED FOR MUCH OF CENTRAL AND SOUTHERN MISSOURI REMAINS IN EFFECT. ONLY ONE WARNING IS IN EFFECT...FOR SOUTHEAST COLE AND SOUTHERN OSAGE COUNTY...HOWEVER CONDITIONS REMAIN VERY FAVORABLE FOR ADDITIONAL SEVERE WEATHER THIS AFTERNOON AND EVENING ACROSS THE AREA. THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA IS FORECASTING A HIGH RISK FOR SEVERE WEATHER ACROSS A GOOD PORTION OF SOUTHERN MISSOURI THIS AFTERNOON AND TONIGHT. THOUGH THERE IS NO IMMEDIATE THREAT FOR SEVERE STORMS...THE POTENTIAL REMAINS VERY HIGH...KEEP ABREAST OF LATEST STATEMENTS FROM THE NATIONAL WEATHER SERVICE AND LISTEN FOR POSSIBLE WARNINGS LATER ON... THIS IS A POTENTIALLY DANGEROUS WEATHER SITUATION. REVIEW SEVERE WEATHER SAFETY RULES...AND LISTEN TO RADIO...TV...OR NOAA WEATHER RADIO FOR LATEST WARNINGS AND STATEMENTS. PEDIGO
Special weather statement, Apr 15, 2:55 PM CDT, 57 minutes before
MOZ049-059-062-065-072>074-084-099-152155- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 255 PM CDT WED APR 15 1998 ...TORNADO WATCH NUMBER 214 REMAINS IN EFFECT UNTIL 700 PM CDT... THE TORNADO WATCH ISSUED FOR MUCH OF CENTRAL AND SOUTHERN MISSOURI REMAINS IN EFFECT. ONLY ONE WARNING IS IN EFFECT...FOR SOUTHEAST COLE AND SOUTHERN OSAGE COUNTY...HOWEVER CONDITIONS REMAIN VERY FAVORABLE FOR ADDITIONAL SEVERE WEATHER THIS AFTERNOON AND EVENING ACROSS THE AREA. THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA IS FORECASTING A HIGH RISK FOR SEVERE WEATHER ACROSS A GOOD PORTION OF SOUTHERN MISSOURI THIS AFTERNOON AND TONIGHT. THOUGH THERE IS NO IMMEDIATE THREAT FOR SEVERE STORMS...THE POTENTIAL REMAINS VERY HIGH...KEEP ABREAST OF LATEST STATEMENTS FROM THE NATIONAL WEATHER SERVICE AND LISTEN FOR POSSIBLE WARNINGS LATER ON... THIS IS A POTENTIALLY DANGEROUS WEATHER SITUATION. REVIEW SEVERE WEATHER SAFETY RULES...AND LISTEN TO RADIO...TV...OR NOAA WEATHER RADIO FOR LATEST WARNINGS AND STATEMENTS. PEDIGO
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 7:11 AM CDT | Severe Thunderstorm Warning | LSX | Iron, Reynolds | 44 min |
| Apr 15, 2:43 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Osage | 47 min |
| Apr 15, 3:26 PM CDT | Tornado Warning | LSX | Franklin, Gasconade | 49 min |
| Apr 15, 4:06 PM CDT | Tornado Warning | LSX | Franklin | 49 min |
| Apr 15, 4:25 PM CDT | Tornado Warning | LSX | Jefferson | 65 min |
| Apr 15, 6:24 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis | 61 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.