Alert archive / Missouri / Tornado Warnings in 1998
Tornado Warning 64, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Jun 12, 1998, 6:00 PM CDT for Jefferson County, Missouri. It was in force for 65 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
- Jun 12, 1998, 6:00 PM CDT (23:00 UTC)
- Expired
- Jun 12, 1998, 7:05 PM CDT
- In force
- 65 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 23:04 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 |
|---|---|---|---|
| Jun 12, 4:30 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 11.0 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
- 538 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 1016 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 129 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 122300 RRA TORSTL ILC133-157-MOC099-186-130000- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 600 PM CDT FRI JUN 12 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... SOUTHERN MONROE COUNTY ILLINOIS IN SOUTHWESTERN ILLINOIS RANDOLPH COUNTY IN SOUTHWESTERN ILLINOIS EASTERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI NORTHERN STE GENEVIEVE COUNTY IN EAST CENTRAL MISSOURI * UNTIL 705 PM CDT * AT 557 PM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO 5 SOUTHEAST OF DESOTO... MOVING EAST-SOUTHEAST AT 30 MPH. * LOCATIONS IN THE PATH... MAYES RED BUD PRAIRIE DU ROCHER RUMA THIS STORM HAS ALSO PRODUCED LARGE HAIL IN THE DE SOTO AREA. THIS IS A DANGEROUS SITUATION! IF IN THE PATH...TAKE COVER NOW! MOVE TO A BASEMENT IF AVAILABLE. IF NOT...STAY ON THE LOWEST LEVEL AND GO TO A SMALL INTERIOR ROOM. MOBILE HOMES AND AUTOMOBILESHOULD BE ABANDONED IN FAVOR OF A STRONG STRUCTURE. AS A LAST RESORT... MOVE TO A DITCH OR CULVERT AND COVER YOUR HEAD. TRUETT/METZE &
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 3:58 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 47 min |
| Jun 12, 4:12 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 33 min |
| Jun 12, 5:04 PM CDT | Tornado Warning | LSX | Lincoln, Saint Charles | 51 min |
| Jun 12, 5:17 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson | 48 min |
| Jun 12, 5:36 PM CDT | Tornado Warning | LSX | Jefferson | 34 min |
| Jun 12, 5:42 PM CDT | Tornado Warning | LSX | Saint Louis, City of Saint Louis | 48 min |
| Jun 12, 6:00 PM CDT | Tornado Warning | LSX | Sainte Genevieve | 65 min |
Nearby
Tornado Warnings in Missouri, 1998Every tornado warning in 1998Tornadoes 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.