Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 162, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 23, 1998, 5:30 PM CDT for Jefferson County, Missouri. It was in force for 45 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, 5:30 PM CDT (22:30 UTC)
- Expired
- May 23, 1998, 6:15 PM CDT
- In force
- 45 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Jefferson County, MO
The radar
The St Louis radar (KLSX), 50 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 |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.5 hours before the alert went out and 268 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.
671 WUUS1 KSTL 232231 RRA SVRSTL MOC099-232315- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 530 PM CDT SAT MAY 23 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... JEFFERSON COUNTY IN EAST CENTRAL MISSOURI * UNTIL 615 PM CDT * AT 529 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES NORTHWEST OF HILLSBORO... MOVING NORTHEAST 35 MPH. * LOCATIONS THAT WILL BE AFFECTED... DITTMER HOUSE SPRINGS ARNOLD THIS IS A DANGEROUS STORM BE PREPARED FOR DAMAGING WINDS...HAIL... AND DEADLY LIGHTNING. STAY INDOORS AWAY FROM WINDOWS. THIS IS A DANGEROUS STORM. BE PREPARED FOR DAMAGING WINDS...HAIL AND DEADLY LIGHTNING. STAY INSIDE AND AWAY FROM WINDOWS. 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, 5:34 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Montgomery | 46 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.