Alert archive / Illinois / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 35, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 7, 1998, 8:54 PM CDT for Clinton County, Illinois. It was in force for 51 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
- Apr 7, 1998, 8:54 PM CDT (01:54 UTC)
- Expired
- Apr 7, 1998, 9:45 PM CDT
- In force
- 51 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Clinton County, IL
The radar
The St Louis radar (KLSX), 110 km from the middle of the area, began a volume at 01:56 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 7, 4:15 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 1.9 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
- 756 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 671 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 185 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.3
The text
As transmitted, in the capitals the NWS used until 2016.
156 WUUS1 KSTL 080155 SVRSTL ILC027-080245- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 854 PM CDT TUE APR 7 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 945 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL ILLINOIS ...EASTERN CLINTON COUNTY AT 855 PM...RADAR INDICATED A SEVERE THUNDERSTORM NEAR CARLYLE. THE STORM WAS MOVING TO THE NORTHEAST AT 30 MPH. TOWNS IN THE PATH OF THE STORM ARE CARLYLE AND BOULDER. REMEMBER...A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. IF OUTDOORS...SEEK INSIDE SHELTER IMMEDIATELY. STAY AWAY FROM WINDOWS.
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, Apr 7, 6:02 PM CDT, 2 hours 52 minutes before
ILZ095-096-MOZ009-010-018-019-080000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 602 PM CDT TUE APR 7 1998 ...TORNADO WATCH HAS BEEN CANCELLED... TORNADO WATCH NUMBER 173 HAS BEEN CANCELLED FOR NORTHEAST MISSOURI AND PORTIONS OF WEST CENTRAL ILLINOIS. THE FOLLOWING COUNTIES ARE NO LONGER IN A TORNADO WATCH... IN MISSOURI... SCOTLAND CLARK KNOX LEWIS IN ILLINOIS... ADAMS BROWN THUNDERSTORMS HAVE PUSHED WELL EAST AND NORTHEAST OF THE AREA AND THERE IS NO LONGER A SEVERE WEATHER THREAT THIS EVENING. GLASS
Local storm report, Apr 7, 6:44 PM CDT, 2 hours 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MISSOURI
644 PM CDT TUE APR 07 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0359 PM CARROLLTON IL 1 INCH HAIL
04/07/98 GREENE SOUTH OF CARROLLTON
0404 PM QUINCY ARPT IL .88 INCH HAIL
04/07/98 ADAMS
0410 PM WAYLAND MO WIND DAMAGE
04/07/98 CLARK MOBILE HOME TOSSED ONTO
ITS TOP AND MACHINE SHEDS
DESTROYED
0420 PM CAMP POINT IL .75 INCH HAIL
04/07/98 ADAMS
0423 PM SAINT FRANCISVILLE MO WIND DAMAGE
04/07/98 CLARK TREES UPROOTED AND TWISTED
POWER LINES DOWN
0435 PM BIGNECK IL .75 INCH HAIL
04/07/98 ADAMS
0450 PM GIRARD IL 1 INCH HAIL
04/07/98 MACOUPIN
0455 PM GIRARD IL 1 INCH HAIL
04/07/98 MACOUPIN
0506 PM VIRDEN IL .75 INCH HAIL
04/07/98 MACOUPIN
0528 PM RAYMOND IL 1 INCH HAIL
04/07/98 MONTGOMERYLocal storm report, Apr 7, 6:44 PM CDT, 2 hours 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MISSOURI
644 PM CDT TUE APR 07 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0359 PM CARROLLTON IL 1 INCH HAIL
04/07/98 GREENE SOUTH OF CARROLLTON
0404 PM QUINCY ARPT IL .88 INCH HAIL
04/07/98 ADAMS
0410 PM WAYLAND MO WIND DAMAGE
04/07/98 CLARK MOBILE HOME TOSSED ONTO
ITS TOP AND MACHINE SHEDS
DESTROYED
0420 PM CAMP POINT IL .75 INCH HAIL
04/07/98 ADAMS
0423 PM SAINT FRANCISVILLE MO WIND DAMAGE
04/07/98 CLARK TREES UPROOTED AND TWISTED
POWER LINES DOWN
0435 PM BIGNECK IL .75 INCH HAIL
04/07/98 ADAMS
0450 PM GIRARD IL 1 INCH HAIL
04/07/98 MACOUPIN
0455 PM GIRARD IL 1 INCH HAIL
04/07/98 MACOUPIN
0506 PM VIRDEN IL .75 INCH HAIL
04/07/98 MACOUPIN
0528 PM RAYMOND IL 1 INCH HAIL
04/07/98 MONTGOMERYSpecial weather statement, Apr 7, 7:02 PM CDT, 1 hour 52 minutes before
ILZ059-060-064-065-069-070-074-079-100-101-080100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 702 PM CDT TUE APR 7 1998 ...TORNADO WATCH REMAINS IN EFFECT... TORNADO WATCH NUMBER 174 REMAINS IN EFFECT FOR PORTIONS OF SOUTHWEST ILLINOIS UNTIL 800 PM. THIS INCLUDES THE FOLLOWING COUNTIES IN ILLINOIS... MACOUPIN MONTGOMERY MADISON BOND ST CLAIR CLINTON RANDOLPH WASHINGTON FAYETTE MADISON AT 658 PM...RADAR SHOWED SCATTERED SHOWERS AND A FEW THUNDERSTORMS OVER SOUTHWEST ILLINOIS...GENERALLY EAST OF A EDWARDSVILLE TO BELLEVILLE LINE. THESE SHOWERS AND THUNDERSTORMS WERE MOVING EAST NORTHEAST AT 30 MPH. WHILE NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS...CONDITIONS REMAIN FAVORABLE FOR SEVERE THUNDERSTORMS OVER THE WATCH AREA. RESIDENTS OF SOUTHWEST ILLINOIS SHOULD REMAIN ALERT OVER THE NEXT HOUR OR SO FOR THE POSSIBILITY OF SEVERE STORMS. AFTER SUNSET THE SEVERE WEATHER THREAT SHOULD DIMINISH CONSIDERABLY. GLASS
Special weather statement, Apr 7, 7:05 PM CDT, 1 hour 49 minutes before
ILZ059-060-064-065-069-070-074-079-100-101-080100- SPECIAL WEATHER STATEMENT ...CORRECTION ON WATCH EXPIRATION TIME... NATIONAL WEATHER SERVICE ST LOUIS MO 705 PM CDT TUE APR 7 1998 ...TORNADO WATCH REMAINS IN EFFECT... TORNADO WATCH NUMBER 174 REMAINS IN EFFECT FOR PORTIONS OF SOUTHWEST ILLINOIS UNTIL 1000 PM. THIS INCLUDES THE FOLLOWING COUNTIES IN ILLINOIS... MACOUPIN MONTGOMERY MADISON BOND ST CLAIR CLINTON RANDOLPH WASHINGTON FAYETTE MADISON AT 658 PM...RADAR SHOWED SCATTERED SHOWERS AND A FEW THUNDERSTORMS OVER SOUTHWEST ILLINOIS...GENERALLY EAST OF A EDWARDSVILLE TO BELLEVILLE LINE. THESE SHOWERS AND THUNDERSTORMS WERE MOVING EAST NORTHEAST AT 30 MPH. WHILE NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS...CONDITIONS REMAIN FAVORABLE FOR SEVERE THUNDERSTORMS OVER THE WATCH AREA. RESIDENTS OF SOUTHWEST ILLINOIS SHOULD REMAIN ALERT OVER THE NEXT HOUR OR SO FOR THE POSSIBILITY OF SEVERE STORMS. AFTER SUNSET THE SEVERE WEATHER THREAT SHOULD DIMINISH CONSIDERABLY. GLASS
Special weather statement, Apr 7, 7:05 PM CDT, 1 hour 49 minutes before
ILZ059-060-064-065-069-070-074-079-100-101-080100- SPECIAL WEATHER STATEMENT ...CORRECTION ON WATCH EXPIRATION TIME... NATIONAL WEATHER SERVICE ST LOUIS MO 705 PM CDT TUE APR 7 1998 ...TORNADO WATCH REMAINS IN EFFECT... TORNADO WATCH NUMBER 174 REMAINS IN EFFECT FOR PORTIONS OF SOUTHWEST ILLINOIS UNTIL 1000 PM. THIS INCLUDES THE FOLLOWING COUNTIES IN ILLINOIS... MACOUPIN MONTGOMERY MADISON BOND ST CLAIR CLINTON RANDOLPH WASHINGTON FAYETTE MADISON AT 658 PM...RADAR SHOWED SCATTERED SHOWERS AND A FEW THUNDERSTORMS OVER SOUTHWEST ILLINOIS...GENERALLY EAST OF A EDWARDSVILLE TO BELLEVILLE LINE. THESE SHOWERS AND THUNDERSTORMS WERE MOVING EAST NORTHEAST AT 30 MPH. WHILE NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS...CONDITIONS REMAIN FAVORABLE FOR SEVERE THUNDERSTORMS OVER THE WATCH AREA. RESIDENTS OF SOUTHWEST ILLINOIS SHOULD REMAIN ALERT OVER THE NEXT HOUR OR SO FOR THE POSSIBILITY OF SEVERE STORMS. AFTER SUNSET THE SEVERE WEATHER THREAT SHOULD DIMINISH CONSIDERABLY. GLASS
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 8:48 PM CDT | Tornado Warning | LSX | Fayette, Marion | 42 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; radar from the NEXRAD Level II archive.