Alert archive / Illinois / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 291, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 29, 1998, 7:19 PM CDT for Marion County, Illinois. It was in force for 46 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 29, 1998, 7:19 PM CDT (00:19 UTC)
- Expired
- Jun 29, 1998, 8:05 PM CDT
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Marion County, IL
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 29, 6:00 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 0.3 hours before the alert went out and 347 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
- 2226 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1384 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.3
The text
As transmitted, in the capitals the NWS used until 2016.
360 WUUS1 KSTL 300020 RRA SVRSTL ILC121-300105- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 719 PM CDT MON JUN 29 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MARION COUNTY ILLINOIS IN SOUTHWESTERN ILLINOIS * UNTIL 805 PM CDT * AT 715 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM FROM 15 MILES SOUTHEAST OF EFFINGHAM TO 10 MILES SOUTHEAST OF GREENVILLE... MOVING SOUTHEAST AT 35 MPH. * LOCATIONS THAT WILL BE AFFECTED... SALEM AT 730 PM CDT ODIN AT 730 PM CDT SEVERAL LARGE TREES WERE DOWN THROUGHOUT FAYETTE COUNTY BETWEEN 640 AND 700 PM CDT THE PRIMARY SEVERE WEATHER THREAT IS DAMAGING WINDS. MOVE QUICKLY TO A STURDY BUILDING AND STAY AWAY FROM DOORS AND WINDOWS. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. RP
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 29, 3:42 PM CDT, 3 hours 37 minutes before
ILZ064-069-070-074-079-100>102-MOZ061-063>065-292300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 342 PM CDT MON JUN 29 1998 ...HEAT ADVISORY FOR PORTIONS OF EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS HAS EXPIRED... A COLD FRONT ACROSS THE UPPER MIDWEST WILL MOVE SOUTHWARD THROUGH MISSOURI LATE TONIGHT AND TUESDAY. YOU CAN EXPECT SHOWERS AND THUNDERSTORMS WITH THIS FRONT AS IT PASSES THROUGH THE AREA OVER THE NEXT 24 HOURS. IN TURN...A RELATIVELY COOLER AND LESS HUMID AIR MASS WILL SETTLE OVER THE AREA LATE TUESDAY THROUGH WEDNESDAY. THUS...THE HEAT ADVISORY FOR PORTIONS OF EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS...INCLUDING THE ST LOUIS METROPOLITAN AREA...WILL BE ALLOWED TO EXPIRE. METZE
Special weather statement, Jun 29, 3:42 PM CDT, 3 hours 37 minutes before
ILZ064-069-070-074-079-100>102-MOZ061-063>065-292300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 342 PM CDT MON JUN 29 1998 ...HEAT ADVISORY FOR PORTIONS OF EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS HAS EXPIRED... A COLD FRONT ACROSS THE UPPER MIDWEST WILL MOVE SOUTHWARD THROUGH MISSOURI LATE TONIGHT AND TUESDAY. YOU CAN EXPECT SHOWERS AND THUNDERSTORMS WITH THIS FRONT AS IT PASSES THROUGH THE AREA OVER THE NEXT 24 HOURS. IN TURN...A RELATIVELY COOLER AND LESS HUMID AIR MASS WILL SETTLE OVER THE AREA LATE TUESDAY THROUGH WEDNESDAY. THUS...THE HEAT ADVISORY FOR PORTIONS OF EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS...INCLUDING THE ST LOUIS METROPOLITAN AREA...WILL BE ALLOWED TO EXPIRE. METZE
Local storm report, Jun 29, 6:56 PM CDT, 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MISSOURI
656 PM CDT MON JUN 29 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0600 AM RICHMOND HEIGHTS MO WIND DAMAGE
06/29/98 ST LOUIS LARGE TREES UPROOTED AND
SNAPPED IN HALFLocal storm report, Jun 29, 6:56 PM CDT, 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MISSOURI
656 PM CDT MON JUN 29 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0600 AM RICHMOND HEIGHTS MO WIND DAMAGE
06/29/98 ST LOUIS LARGE TREES UPROOTED AND
SNAPPED IN HALFThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 7:13 PM CDT | Tornado Warning | LSX | Fayette | 32 min |
| Jun 29, 7:25 PM CDT | Severe Thunderstorm Warning | LSX | Brown | 50 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 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; the sounding from the Mesonet's radiosonde archive.