Alert archive / Illinois / Tornado Warnings in 1997
Tornado Warning 2, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 30, 1997, 2:33 PM CDT for Macoupin County, Illinois. It was in force for 42 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
- Apr 30, 1997, 2:33 PM CDT (19:33 UTC)
- Expired
- Apr 30, 1997, 3:15 PM CDT
- In force
- 42 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Macoupin County, IL
The radar
The St Louis radar (KLSX), 91 km from the middle of the area, began a volume at 19:34 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 |
|---|---|---|---|
| Apr 30, 2:35 PM CDT | Hail 0.75 | Medora, 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 |
|---|---|---|---|
| Apr 30, 2:30 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 7.6 hours before the alert went out and 150 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 301935 RRA TORSTL ILC117-302015- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 233 PM CDT WED APR 30 1997 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 315 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN CENTRAL ILLINOIS ...MACOUPIN COUNTY AT 233 PM...DOPPLER RADAR SHOWED A TORNADO NEAR THE TOWN OF MEDORA MOVING NORTHEAST AT 35 MPH. TOWNS IN THE PATH OF THIS STOR.M ARE CARLINVILLE...MACOUPIN STATION AND STANDARD CITY. THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY AND SEEK SHELTER NOW! LEWIS/RP
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, 2:47 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 |
| Apr 30, 3:43 PM CDT | Severe Thunderstorm Warning | LSX | Fayette | 32 min |
Nearby
Tornado Warnings in Illinois, 1997Every tornado warning in 1997Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.