Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 27, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 30, 1998, 8:57 PM CST for Marion County, Missouri. It was in force for 33 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
- Mar 30, 1998, 8:57 PM CST (02:57 UTC)
- Expired
- Mar 30, 1998, 9:30 PM CST
- In force
- 33 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Marion County, MO
The radar
The St Louis radar (KLSX), 147 km from the middle of the area, began a volume at 02:58 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
Davenport, (KDVN), launched 00:00Z, 3.0 hours before the alert went out and 223 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
- 226 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 1587 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 152 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.4
The text
As transmitted, in the capitals the NWS used until 2016.
128 WUUS1 KSTL 310256 RRA SVRSTL MOC127-310330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 857 PM CST MON MAR 30 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 930 PM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST MISSOURI ...NORTHERN MARION COUNTY AT 855 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS DETECTING A SEVERE THUNDERSTORM NEAR EMDEN IN EASTERN SHELBY COUNTY. THE STORM WAS MOVING TO THE NORTHEAST AT 50 MPH AND WILL MOVE THROUGH NORTHERN MARION COUNTY. TOWNS IN THE PATH OF THIS SEVERE STORM ARE PHILADELPHIA AND TAYLOR. REMEMBER...A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. IF OUTDOORS...SEEK INSIDE SHELTER IMMEDIATELY. STAY AWAY FROM WINDOWS. GKS/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, Mar 30, 8:55 PM CST, 2 minutes before
ILZ058-059-095>100-MOZ027-034>036-041-042-047>052-059>065-072-073- 310900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 855 PM CST MON MAR 30 1998 ...A TORNADO WATCH IS IN EFFECT UNTIL 300 AM CST FOR PORTIONS OF NORTHEAST...CENTRAL...AND EAST CENTRAL MISSOURI... AT 855 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS THAT EXTENDED FROM NORTHEAST MISSOURI INTO CENTRAL MISSOURI. THE INDIVIDUAL STORMS WERE MOVING TO THE NORTHEAST AROUND 55 MILES AN HOUR. PERSONS IN THE WATCH AREA SHOULD REMAIN ALERT FOR LATER STATEMENTS AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
Special weather statement, Mar 30, 8:55 PM CST, 2 minutes before
ILZ058-059-095>100-MOZ027-034>036-041-042-047>052-059>065-072-073- 310900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 855 PM CST MON MAR 30 1998 ...A TORNADO WATCH IS IN EFFECT UNTIL 300 AM CST FOR PORTIONS OF NORTHEAST...CENTRAL...AND EAST CENTRAL MISSOURI... AT 855 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS THAT EXTENDED FROM NORTHEAST MISSOURI INTO CENTRAL MISSOURI. THE INDIVIDUAL STORMS WERE MOVING TO THE NORTHEAST AROUND 55 MILES AN HOUR. PERSONS IN THE WATCH AREA SHOULD REMAIN ALERT FOR LATER STATEMENTS AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 6:35 PM CST | Severe Thunderstorm Warning | LSX | Scotland | 10 min |
| Mar 30, 6:48 PM CST | Severe Thunderstorm Warning | LSX | Scotland | 17 min |
| Mar 30, 6:58 PM CST | Severe Thunderstorm Warning | LSX | Clark | 17 min |
| Mar 30, 8:48 PM CST | Severe Thunderstorm Warning | LSX | Shelby | 27 min |
| Mar 30, 9:15 PM CST | Severe Thunderstorm Warning | LSX | Monroe | 30 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.