Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 59, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 15, 1998, 8:30 PM CDT for Madison County, Missouri. It was in force for 50 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 15, 1998, 8:30 PM CDT (01:30 UTC)
- Expired
- Apr 15, 1998, 9:20 PM CDT
- In force
- 50 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Madison County, MO
The radar
The St Louis radar (KLSX), 139 km from the middle of the area, began a volume at 01:31 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, 8:39 PM CDT | Tornado F1 | Saco, MO | |
| Apr 15, 9:10 PM CDT | Hail 0.75 | Roselle, MO | County sheriff reported 3/4 inch hail near Roselle. |
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, 4:30 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 00:00Z, 1.5 hours before the alert went out and 297 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
- 1219 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 868 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 2.7
The text
As transmitted, in the capitals the NWS used until 2016.
566 WUUS1 KSTL 160132 RRA SVRSTL MOC123-160220- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 830 PM CDT WED APR 15 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MADISON COUNTY MISSOURI IN SOUTHEASTERN MISSOURI * UNTIL 920 PM CDT * AT 825 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR SACO... MOVING NORTHEAST AT 30 MPH. * LOCATIONS THAT WILL BE AFFECTED... SACO MARCUAND THE PRIMARY SEVERE WEATHER THREAT IS DAMAGING HAIL. LARGE HAIL CAN CAUSE EXTENSIVE PROPERTY DAMAGE AN SERIOUS INJURY TO PEOPLE CAUGHT OUTDOORS. MOVE INSIDE A STURDY BUILDING IMMEDIATELY. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. METZE/GLASS
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, 2:55 PM CDT, 5 hours 35 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, 5 hours 35 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, 6:58 PM CDT, 1 hour 32 minutes before
MOZ041-047>051-059>065-072>074-084-099-160100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 658 PM CDT WED APR 15 1998 THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH FOR PARTS OF CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 11PM. THIS WATCH REPLACES WATCH 214 THAT WAS IN EFFECT UNTIL 7PM. AMS
Special weather statement, Apr 15, 6:58 PM CDT, 1 hour 32 minutes before
MOZ041-047>051-059>065-072>074-084-099-160100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 658 PM CDT WED APR 15 1998 THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH FOR PARTS OF CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 11PM. THIS WATCH REPLACES WATCH 214 THAT WAS IN EFFECT UNTIL 7PM. AMS
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 8:39 PM CDT | Tornado Warning | LSX | Madison | 51 min |
| Apr 15, 8:49 PM CDT | Severe Thunderstorm Warning | LSX | Iron | 46 min |
| Apr 15, 9:19 PM CDT | Tornado Warning | LSX | Madison | 46 min |
| Apr 15, 9:22 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve, Saint Francois | 63 min |
| Apr 15, 11:57 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 48 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.