Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 100, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 12, 1998, 10:28 PM CDT for Saint Charles County, Missouri. It was in force for 62 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
- May 12, 1998, 10:28 PM CDT (03:28 UTC)
- Expired
- May 12, 1998, 11:30 PM CDT
- In force
- 62 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Saint Charles County, MO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 12, 11:00 PM CDT | Hail 0.75 | Orchard Farm, 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 00:00Z, 3.5 hours before the alert went out and 234 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
- 1906 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1317 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 6.2
The text
As transmitted, in the capitals the NWS used until 2016.
480 WUUS1 KSTL 130327 RRA SVRSTL MOC183-130430- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 1028 PM CDT TUE MAY 12 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN ST CHARLES COUNTY IN EAST CENTRAL MISSOURI * UNTIL 1130 PM CDT * AT 1025 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES NORTH OF ST CHARLES... MOVING NORTHEAST AT 20 MPH. * LOCATIONS THAT WILL BE AFFECTED... ORCHARD FARM PORTAGE DES SIOUX 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/GLASS
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, May 12, 7:40 PM CDT, 2 hours 48 minutes before
ILZ095>097-MOZ009-010-018-019-026-027-034>036-042-130145- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 740 PM CDT TUE MAY 12 1998 ...SEVERE THUNDERSTORM WATCH 334 HAS BEEN CANCELLED... SEVERE THUNDERSTORM WATCH 334 THAT WAS IN EFFECT FOR PORTIONS OF NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS HAS BEEN CANCELLED. THIS INCLUDES THE MISSOURI COUNTIES OF... SCOTLAND CLARK KNOX LEWIS SHELBY MARION MONROE RALLS PIKE AUDRAIN AND THE ILLINOIS COUNTIES OF... ADAMS BROWN PIKE METZE
Special weather statement, May 12, 7:40 PM CDT, 2 hours 48 minutes before
ILZ095>097-MOZ009-010-018-019-026-027-034>036-042-130145- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 740 PM CDT TUE MAY 12 1998 ...SEVERE THUNDERSTORM WATCH 334 HAS BEEN CANCELLED... SEVERE THUNDERSTORM WATCH 334 THAT WAS IN EFFECT FOR PORTIONS OF NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS HAS BEEN CANCELLED. THIS INCLUDES THE MISSOURI COUNTIES OF... SCOTLAND CLARK KNOX LEWIS SHELBY MARION MONROE RALLS PIKE AUDRAIN AND THE ILLINOIS COUNTIES OF... ADAMS BROWN PIKE METZE
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.