Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 202, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 12, 1998, 4:12 PM CDT for Montgomery County, Missouri. It was in force for 33 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, 4:12 PM CDT (21:12 UTC)
- Expired
- Jun 12, 1998, 4:45 PM CDT
- In force
- 33 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Montgomery County, MO
The radar
The St Louis radar (KLSX), 73 km from the middle of the area, began a volume at 21:11 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, 4:15 PM CDT | Hail 1.75 | Montgomery City, 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 nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 9.2 hours before the alert went out and 280 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 122112 RRA SVRSTL MOC139-122145- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 412 PM CDT FRI JUN 12 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MONTGOMERY COUNTY MISSOURI IN EASTERN MISSOURI * UNTIL 445 PM CDT * AT 412 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM JUST WEST OF MONTGOMERY CITY... MOVING EAST AT 30 MPH. * LOCATIONS THAT WILL BE AFFECTED... MONTGOMERY CITY NEW FLORENCE BELLFLOWER 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. METZE/TRUETT
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jun 12, 11:15 AM CDT, 4 hours 57 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026- 027-034>036-041-042-047>052-059>065-072>075-084-085-099-122300- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1115 AM CDT FRI JUN 12 1998 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. AREAS INCLUDED ARE PORTIONS OF NORTHEAST...CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE EASTERN PORTION OF THE WARNING AREA THIS AFTERNOON AND EARLY THIS EVENING...GENERALLY ALONG AND EAST OF THE MISSISSIPPI RIVER FROM HANNIBAL TO ST LOUIS TO STE GENEVIEVE. SCATTERED TO WIDELY SCATTERED THUNDERSTORMS ARE POSSIBLE ACROSS THE AREA THIS AFTERNOON. A FEW OF THESE STORMS COULD BE SEVERE WITH DAMAGING WINDS AND LARGE HAIL AS THE MAIN THREAT. SPOTTERS SHOULD BE ON ALERT TODAY FOR POSSIBLE SKYWARN ACTnIVATION. GLASS
Special weather statement, Jun 12, 11:15 AM CDT, 4 hours 57 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026- 027-034>036-041-042-047>052-059>065-072>075-084-085-099-122300- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1115 AM CDT FRI JUN 12 1998 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. AREAS INCLUDED ARE PORTIONS OF NORTHEAST...CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE EASTERN PORTION OF THE WARNING AREA THIS AFTERNOON AND EARLY THIS EVENING...GENERALLY ALONG AND EAST OF THE MISSISSIPPI RIVER FROM HANNIBAL TO ST LOUIS TO STE GENEVIEVE. SCATTERED TO WIDELY SCATTERED THUNDERSTORMS ARE POSSIBLE ACROSS THE AREA THIS AFTERNOON. A FEW OF THESE STORMS COULD BE SEVERE WITH DAMAGING WINDS AND LARGE HAIL AS THE MAIN THREAT. SPOTTERS SHOULD BE ON ALERT TODAY FOR POSSIBLE SKYWARN ACTnIVATION. GLASS
Special weather statement, Jun 12, 2:53 PM CDT, 1 hour 19 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026- 027-034>036-041-042-047>052-059>065-072>075-084-085-099-130000- SEVERE WEATHER OUTLOOK...UPDATED TO EXPAND WESTWARD NATIONAL WEATHER SERVICE ST LOUIS MO 253 PM CDT FRI JUN 12 1998 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. AREAS INCLUDED ARE PORTIONS OF NORTHEAST...CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PORTIONS OF EASTERN MISSOURI AND SOUTHWEST ILLINOIS THIS AFTERNOON AND EARLY EVENING. THE RISK AREA IS GENERALLY ALONG AND EAST OF A LINE FROM JUST SOUTHEAST OF QUINCY...ILLINOIS TO COLUMBIA...MISSOURI TO POPULAR BLUFF. SCATTERED TO WIDELY SCATTERED THUNDERSTORMS ARE POSSIBLE ACROSS MUCH OF EASTERN MISSOURI AND WESTERN ILLINOIS. A FEW OF THESE STORMS COULD BE SEVERE WITH DAMAGING WINDS AND LA2RGE HAIL AS THE MAIN THREAT. SPOTTERS SHOULD BE ON ALERT FOR POSSIBLE SKYWARN ACTIVATION THIS AFTERNOON AND EARLY EVENING. 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, 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 |
| Jun 12, 6:00 PM CDT | Tornado Warning | LSX | Jefferson | 65 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.