Alert archive / Illinois / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 43, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 30, 1997, 3:43 PM CDT for Fayette 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
- Apr 30, 1997, 3:43 PM CDT (20:43 UTC)
- Expired
- Apr 30, 1997, 4:15 PM CDT
- In force
- 32 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Fayette County, IL
The radar
The Lincoln radar (KILX), 131 km from the middle of the area, began a volume at 20:42 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 30, 2:30 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 8.7 hours before the alert went out and 133 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
- 1130 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 166 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 302043 RRA SVRSTL ILC051-302115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 343 PM CDT WED APR 30 1997 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 415 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL ILLINOIS ...FAYETTE COUNTY AT 340 PM...DOPPLER RADAR INDICATED TWO SEVERE THUNDERSTORMS OVER CENTRAL FAYETTE COUNTY 5 MILES NORTH OF THE TOWN OF VANDALIA MOVING TO THE NORTHEAST AT 45 MPH. TOWNS IN THE PATHS OF THESE STORMS ARE WRIGHTS CORNER AND PRUETT. PEOPLE IN THESE COMMUNITIES SHOULD TAKE SHELTER IMMEDIATELY. REMEMBER...A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. IF OUTDOORS...SEEK INSIDE SHELTER IMMEDIATELY. STAY AWAY FROM WINDOWS. LEWIS/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, Apr 30, 11:33 AM CDT, 4 hours 10 minutes before
MOZ042-041-050-010-048-072-062-059-084-018-019-052-085-027-047- 051-034-049-036-035-099-061-075-074-063-064-009-026-060-073-ILZ095- 064-096-098-069-065-058-099-059-100-070-102-060-097-079-101-074- MOZ065-291600- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1130 AM CST WED APR 30 1997 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NWS OFFICE IN ST LOUIS. AREAS INCLUDED ARE PARTS OF CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS. THERE IS A MODERATE RISK OF SEVERE WEATHER THIS AFTERNOON OVER EXTREME EASTERN MISSOURI AND CENTRAL AND NORTHERN ILLINOIS. THIS IS AN AREA GENERALLY NORTH AND EAST OF A LINE FROM SALEM ILLINOIS TO ST. LOUIS NORTHWEST ALONG THE MISSISSIPPI RIVER TO THE IOWA BORDER. THERE IS ALSO A SLIGHT RISK OF SEVERE WEATHER ACROSS MUCH OF THE EASTERN HALF OF MISSOURI AND NORTHERN ILLINOIS. THE SLIGHT RISK AREA COVERS THE REST OF THE ST. LOUIS COUNTY WARNING AREA. A LOW PRESSURE SYSTEM IS MOVING RAPIDLY NORTHEAST ACROSS NORTHERN MISSOURI THIS MORNING...AND WILL MOVE INTO NORTHEASTERN ILLINOIS BY THIS EVENING. A COLD FRONT WILL SWEEP EASTWARD ACROSS EASTERN MISSOURI THIS AFTERNOON...TRIGGERING STRONG THUNDERSTORMS. SOME \OF THESE STORMS MAY BECOME SEVERE. STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD KEEP ADVISED OF THE LATEST FORECAST FOR POSSIBLE SKYWARN ACTION FROM LATE THIS MORNING THROUGH THE EARLY EVENING. WDB
Special weather statement, Apr 30, 12:30 PM CDT, 3 hours 13 minutes before
MOZ042-041-050-010-048-072-062-059-084-018-019-052-085-027-047- 051-034-049-036-035-099-061-075-074-063-064-009-026-060-073-ILZ095- 064-096-098-069-065-058-099-059-100-070-102-060-097-079-101-074- MOZ065-291600- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1130 AM CST WED APR 30 1997 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NWS OFFICE IN ST LOUIS. AREAS INCLUDED ARE PARTS OF CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS. THERE IS A MODERATE RISK OF SEVERE WEATHER THIS AFTERNOON OVER EXTREME EASTERN MISSOURI AND CENTRAL AND NORTHERN ILLINOIS. THIS IS AN AREA GENERALLY NORTH AND EAST OF A LINE FROM SALEM ILLINOIS TO ST. LOUIS NORTHWEST ALONG THE MISSISSIPPI RIVER TO THE IOWA BORDER. THERE IS ALSO A SLIGHT RISK OF SEVERE WEATHER ACROSS MUCH OF THE EASTERN HALF OF MISSOURI AND NORTHERN ILLINOIS. THE SLIGHT RISK AREA COVERS THE REST OF THE ST. LOUIS COUNTY WARNING AREA. A LOW PRESSURE SYSTEM IS MOVING RAPIDLY NORTHEAST ACROSS NORTHERN MISSOURI THIS MORNING...AND WILL MOVE INTO NORTHEASTERN ILLINOIS BY THIS EVENING. A COLD FRONT WILL SWEEP EASTWARD ACROSS EASTERN MISSOURI THIS AFTERNOON...TRIGGERING STRONG THUNDERSTORMS. SOME OF THESE STORMS MAY BECOME SEVERE. STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD KEEP ADVISED OF THE LATEST FORECAST FOR POSSIBLE SKYWARN ACTION FROM LATE THIS MORNING THROUGH THE EARLY EVENING. WDB
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 1:31 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 29 min |
| Apr 30, 1:42 PM CDT | Tornado Warning | LSX | Adams | 48 min |
| Apr 30, 2:23 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 52 min |
| Apr 30, 2:28 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 47 min |
| Apr 30, 2:33 PM CDT | Tornado Warning | LSX | Macoupin | 42 min |
| Apr 30, 2:47 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 43 min |
| Apr 30, 2:51 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette | 54 min |
| Apr 30, 2:58 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 47 min |
| Apr 30, 3:29 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 46 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1997Every severe thunderstorm warning in 1997
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.