Alert archive / Illinois / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 189, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 4, 1998, 9:13 PM CDT for Macoupin County, Montgomery County, Illinois. It was in force for 32 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 4, 1998, 9:13 PM CDT (02:13 UTC)
- Expired
- Jun 4, 1998, 9:45 PM CDT
- In force
- 32 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Macoupin County, IL, Montgomery County, IL
The radar
The St Louis radar (KLSX), 104 km from the middle of the area, began a volume at 02:16 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 nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 2.2 hours before the alert went out and 138 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
- 2 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 994 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 050213 RRA SVRSTL ILC117-135-050245- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 913 PM CDT THU JUN 4 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN MACOUPIN COUNTY IN SOUTHWESTERN ILLINOIS NORTHERN MONTGOMERY COUNTY ILLINOIS IN SOUTHWESTERN ILLINOIS * UNTIL 945 PM CDT * AT 912 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM BETWEEN GIRARD AND PALMYRA... MOVING EAST- NORTHEAST AT 45 MPH. * LOCATIONS THAT WILL BE AFFECTED... GIRARD FARMERSVILLE 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. TPS/TRUETT
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 4, 9:00 PM CDT, 13 minutes before
ILZ058-059-079-098>102-MOZ036-041-042-047>052-059>065-072>075-050230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 900 PM CDT THU JUN 4 1998 ...SEVERE THUNDERSTORM WATCH 505 HAS EXPIRED... THE FOLLOWING COUNTIES HAVE BEEN CLEARED FROM SEVERE THUNDERSTORM WATCH 505... MISSOURI... AUDRAIN BOONE CALLAWAY MONITEAU COLE OSAGE MONTGOMERY LINCOLN WARREN ST CHARLES ST LOUIS FRANKLIN ST LOUIS CITY GASCONADE JEFFERSON CRAWFORD WASHINGTON ST FRANCOIS STE GENEVIEVE ILLINOIS... GREENE CALHOUN MACOUPIN MADISON ST CLAIR MONROE RANDOLPH SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE MUCH OF CENTRAL AND EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS DURING THE NIGHT. LOCALLY HEAVY RAINFALL IS STILL POSSIBLE. A FLASH FLOOD WATCH REMAINS IN EFFECT FOR PARTS OF CENTRAL AND SOUTHEAST MISSOURI INCLUDING ADJACENT SOUTHWEST ILLINOIS COUNTIES. METZE
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 8:42 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin | 33 min |
| Jun 4, 9:20 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Pike | 35 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.