Alert archive / Missouri / Tornado Warnings in 1998
Tornado Warning 60, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Jun 12, 1998, 5:36 PM CDT for Jefferson County, Missouri. It was in force for 34 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
- Jun 12, 1998, 5:36 PM CDT (22:36 UTC)
- Expired
- Jun 12, 1998, 6:10 PM CDT
- In force
- 34 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 22:38 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 |
|---|---|---|---|
| Jun 12, 5:50 PM CDT | Hail 1.75 | De Soto, 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 |
|---|---|---|---|
| Jun 12, 4:30 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.6 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 122236 RRA TORSTL MOC099-122310- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 536 PM CDT FRI JUN 12 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... SOUTHERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI * UNTIL 610 PM CDT * AT 535 PM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO 5 MILES WEST-SOUTHWEST OF HILLSBORO ... MOVING EAST AT 30 MPH. * LOCATIONS IN THE PATH... DE SOTO VICTORIA HILLSBORO HEMATITE FESTUS IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER NOW! A BASEMENT OFFERS THE BEST PROTECTION. IF NOT AVAILABLE...MOVE TO THE LOWEST FLOOR AND SEEK SHELTER IN A SMALL INTERIOR ROOM. STAY AWAY FROM OUTSIDE WALLS AND WINDOWS. MOBILE HOMES SHOULD BE ABANDONED IN FAVOR OF A MORE SUBSTANTIAL STRUCTURE. DO NOT TRY TO OUTRUN A TORNADO IN A VEHICLE TRUETT/METZE/GLASS
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, 5:42 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 |
| Jun 12, 6:00 PM CDT | Tornado Warning | LSX | Jefferson | 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.