Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 23, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 30, 1998, 6:35 PM CST for Scotland County, Missouri. It was in force for 10 min. 1 report 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
- Mar 30, 1998, 6:35 PM CST (00:35 UTC)
- Expired
- Mar 30, 1998, 6:45 PM CST
- In force
- 10 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Scotland County, MO
The radar
The Quad Cities radar (KDVN), 184 km from the middle of the area, began a volume at 00:38 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 |
|---|---|---|---|
| Mar 30, 6:42 PM CST | Hail 0.75 | Memphis, MO |
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 |
|---|---|---|---|
| Mar 30, 3:00 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 0.6 hours before the alert went out and 190 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.
413 WUUS1 KSTL 310035 RRA SVRSTL MOC199-310045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 635 PM CST MON MAR 30 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 645 PM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHEAST MISSOURI ...NORTHERN SCOTLAND COUNTY AT 627 PM...NWS DOPPLER RADAR SHOWED A SEVERE THUNDERSTORM WAS ABOUT 5 MILES SOUTHWEST OF MEMPHIS. THE STORM WAS MOVING TO THE NORTHEAST AT 50 MPH. IT WILL BE NEAR MEMPHIS APPROXIMATELY 640 PM. THIS IS A DANGEROUS STORM BE PREPARED FOR DAMAGING WINDS...HAIL AND DEADLY LIGHTNING. STAY INSIDE AND AWAY FROM WINDOWS. DF/DM
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 8:57 PM CST | Severe Thunderstorm Warning | LSX | Marion | 33 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.