Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 61, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 15, 1998, 9:22 PM CDT for Sainte Genevieve County, Saint Francois County, Missouri. It was in force for 63 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
- Apr 15, 1998, 9:22 PM CDT (02:22 UTC)
- Expired
- Apr 15, 1998, 10:25 PM CDT
- In force
- 63 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Saint Francois County, MO, Sainte Genevieve County, MO
The radar
The St Louis radar (KLSX), 99 km from the middle of the area, began a volume at 02:24 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 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 |
| Apr 15, 7:00 PM CDT | Tornado Watch | SPC | 4 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 2.4 hours before the alert went out and 296 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
- 426 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 919 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
947 WUUS1 KSTL 160223 RRA SVRSTL MOC186-187-160325- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 922 PM CDT WED APR 15 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN ST FRANCOIS COUNTY IN EAST CENTRAL MISSOURI SOUTHERN STE GENEVIEVE COUNTY IN EAST CENTRAL MISSOURI * UNTIL 1025 PM CDT * AT 920 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR KNOB LICK... MOVING NORTHEAST AT 25 MPH. * LOCATIONS THAT WILL BE AFFECTED... KNOB LICK WOMACK LIBERTYVILLE 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, 6:58 PM CDT, 2 hours 24 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, 2 hours 24 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, 9:21 PM CDT, 1 minute before
MOZ041-048>00-160330- SPECIAL WEATHER STATEMENT NPur* m4uRq:4jq:Un.:*n.oZj.,LX
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 8:30 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 50 min |
| 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, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.