Alert archive / Illinois / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 292, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 29, 1998, 7:25 PM CDT for Brown County, Illinois. It was in force for 50 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 29, 1998, 7:25 PM CDT (00:25 UTC)
- Expired
- Jun 29, 1998, 8:15 PM CDT
- In force
- 50 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Brown County, IL
The radar
The Lincoln radar (KILX), 122 km from the middle of the area, began a volume at 00:28 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 29, 7:35 PM CDT | Thunderstorm Wind 55 | Mt Sterling, IL |
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 29, 3:15 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 0.4 hours before the alert went out and 186 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2291 m above ground
- 0-6 km bulk shear
- 122 kt
- 0-1 km storm-relative helicity
- 282 m²/s²
- 0-3 km storm-relative helicity
- 358 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 300026 RRA SVRSTL ILC009-300115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 725 PM CDT MON JUN 29 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... BROWN COUNTY IN WEST CENTRAL ILLINOIS * UNTIL 815 PM CDT * AT 723 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WESTERN BROWN COUNTY ILLINOIS... MOVING SOUTHEAST AT 35 MPH. * LOCATIONS THAT WILL BE AFFECTED... RIPLEY MOUNT STERLING 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 43 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 43 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, 29 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, 29 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, 7:19 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 46 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.