Alert archive / Missouri / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 103, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 12, 1997, 8:49 PM CDT for Audrain County, Boone County, Callaway County, Missouri. It was in force for 41 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 12, 1997, 8:49 PM CDT (01:49 UTC)
- Expired
- Jun 12, 1997, 9:30 PM CDT
- In force
- 41 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Audrain County, MO, Boone County, MO, Callaway County, MO
The radar
The St Louis radar (KLSX), 121 km from the middle of the area, began a volume at 01:53 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
Springfield, MO (KSGF), launched 00:00Z, 1.8 hours before the alert went out and 282 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
- 2667 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1075 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
722 WUUS1 KSTL 130153 RRA SVRSTL MOC019-027-007-130230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 849 PM CDT THU JUN 12 1997 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 930 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN CENTRAL MISSOURI ...NORTHEASTERN BOONE COUNTY...NORTHERN CALLAWAY COUNTY IN EAST CENTRAL MISSOURI ...SOUTHERN AUDRAIN COUNTY AT 847 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS DETECTING A SEVERE THUNDERSTORM JUST NORTH OF HALLSVILLE IN NORTHERN BOONE COUNTY. THE STORM WAS MOVING TO THE SOUTHEAST AT 20 MPH. THE STORM WILL MOVE BETWEEN THE TOWNS OF MEXICO AND AUXVASSE BY 915 PM. THIS IS A DANGEROUS STORM BE PREPARED FOR DAMAGING WINDS...HAIL AND DEADLY LIGHTNING. STAY INSIDE AND AWAY FROM WINDOWS. GKS/DB
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 3:55 PM CDT | Severe Thunderstorm Warning | LSX | Crawford | 50 min |
| Jun 13, 3:58 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 47 min |
| Jun 13, 4:48 PM CDT | Severe Thunderstorm Warning | LSX | Saint Francois, Washington | 42 min |
| Jun 13, 5:00 PM CDT | Tornado Warning | LSX | Saint Francois | 45 min |
| Jun 13, 5:21 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve | 54 min |
| Jun 13, 6:02 PM CDT | Severe Thunderstorm Warning | LSX | Iron | 28 min |
| Jun 13, 6:39 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Francois | 51 min |
| Jun 13, 6:53 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve | 52 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 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.