Alert archive / Illinois / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 147, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 22, 1998, 4:44 AM CDT for Montgomery 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
- May 22, 1998, 4:44 AM CDT (09:44 UTC)
- Expired
- May 22, 1998, 5:35 AM CDT
- In force
- 51 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Montgomery County, IL
The radar
The Lincoln radar (KILX), 103 km from the middle of the area, began a volume at 09:45 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 |
|---|---|---|---|
| May 22, 2:00 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 9.7 hours before the alert went out and 127 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
- 1615 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
773 WUUS1 KSTL 220945 RRA SVRSTL ILC135-221035- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 444 AM CDT FRI MAY 22 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MONTGOMERY COUNTY ILLINOIS IN SOUTHWESTERN ILLINOIS * UNTIL 535 AM CDT * AT 443 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM 5 EAST OF CARLINVILLE TO GILLESPIE... MOVING EAST AT 30 MPH. * LOCATIONS THAT WILL BE AFFECTED... LITCHFIELD HILSBORO SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND GUSTS IN EXCESS OF 60 MPH...DAMAGING HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OR YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. DM/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, May 22, 4:31 AM CDT, 13 minutes before
ILZ095>097-MOZ036-221000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 431 AM CDT FRI MAY 22 1998 ...SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR A PORTION OF WEST CENTRAL ILLINOIS AND EAST CENTRAL MISSOURI... SEVERE THUNDERSTORM WATCH 395 IS NO LONGER IN EFFECT FOR THE ILLINOIS COUNTIES OF ADAMS...BROWN...AND PIKE...AND FOR PIKE COUNTY MISSOURI AS WELL. THE THREAT OF SEVERE WEATHER HAS SUBSIDED IN THESE AREAS. TRUETT&
Special weather statement, May 22, 4:31 AM CDT, 13 minutes before
ILZ095>097-MOZ036-221000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 431 AM CDT FRI MAY 22 1998 ...SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR A PORTION OF WEST CENTRAL ILLINOIS AND EAST CENTRAL MISSOURI... SEVERE THUNDERSTORM WATCH 395 IS NO LONGER IN EFFECT FOR THE ILLINOIS COUNTIES OF ADAMS...BROWN...AND PIKE...AND FOR PIKE COUNTY MISSOURI AS WELL. THE THREAT OF SEVERE WEATHER HAS SUBSIDED IN THESE AREAS. TRUETT&
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 1:06 AM CDT | Severe Thunderstorm Warning | LSX | Jersey | 64 min |
| May 22, 1:20 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 65 min |
| May 22, 1:52 AM CDT | Severe Thunderstorm Warning | LSX | Madison | 63 min |
| May 22, 2:12 AM CDT | Severe Thunderstorm Warning | LSX | Jersey | 33 min |
| May 22, 2:17 AM CDT | Severe Thunderstorm Warning | LSX | Adams | 48 min |
| May 22, 2:34 AM CDT | Severe Thunderstorm Warning | LSX | Pike | 61 min |
| May 22, 2:59 AM CDT | Tornado Warning | LSX | Pike | 51 min |
| May 22, 3:31 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene | 64 min |
| May 22, 3:50 AM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 65 min |
| May 22, 4:08 AM CDT | Severe Thunderstorm Warning | LSX | Jersey | 47 min |
| May 22, 5:02 AM CDT | Severe Thunderstorm Warning | LSX | Bond | 48 min |
| May 22, 5:20 AM CDT | Severe Thunderstorm Warning | LSX | Fayette | 50 min |
| May 22, 5:40 AM CDT | Severe Thunderstorm Warning | LSX | Marion | 50 min |
| May 22, 7:35 AM CDT | Severe Thunderstorm Warning | LSX | Adams | 35 min |
| May 22, 8:00 AM CDT | Severe Thunderstorm Warning | LSX | Brown, Pike | 50 min |
| May 22, 8:52 AM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin | 33 min |
| May 22, 9:22 AM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 48 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.