Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 163, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 23, 1998, 5:34 PM CDT for Audrain County, Montgomery County, Missouri. It was in force for 46 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
- May 23, 1998, 5:34 PM CDT (22:34 UTC)
- Expired
- May 23, 1998, 6:20 PM CDT
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Audrain County, MO, Montgomery County, MO
The radar
The St Louis radar (KLSX), 94 km from the middle of the area, began a volume at 22:34 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 |
|---|---|---|---|
| May 23, 3:15 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 23, 5:30 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.6 hours before the alert went out and 288 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
- 64 J/kg
- Mixed-layer CIN
- -431 J/kg
- Mixed-layer LCL
- 556 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 142 m²/s²
- 0-3 km storm-relative helicity
- 186 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.1
The text
As transmitted, in the capitals the NWS used until 2016.
684 WUUS1 KSTL 232235 RRA SVRSTL MOC007-139-232320- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 534 PM CDT SAT MAY 23 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN AUDRAIN COUNTY IN CENTRAL MISSOURI NORTHERN MONTGOMERY COUNTY MISSOURI IN EASTERN MISSOURI * UNTIL 620 PM CDT * AT 532 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES NORTHEAST OF KINGDOM CITY... MOVING NORTHEAST AT 35 MPH. * LOCATIONS THAT WILL BE AFFECTED... MEXICO LADDONIA WELLSVILLE MIDDLETOWN 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. PEDIGO
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 4:10 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Osage | 50 min |
| May 23, 4:29 PM CDT | Severe Thunderstorm Warning | LSX | Callaway | 46 min |
| May 23, 5:12 PM CDT | Severe Thunderstorm Warning | LSX | Callaway | 33 min |
| May 23, 5:30 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 45 min |
| May 23, 5:37 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone | 48 min |
| May 23, 5:59 PM CDT | Tornado Warning | LSX | Saint Charles, Saint Louis | 51 min |
| May 23, 6:20 PM CDT | Tornado Warning | LSX | Pike | 50 min |
| May 23, 6:24 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.