Alert archive / Montana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 92, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at Jul 10, 1997, 11:33 PM MDT for Custer County, Montana. It was in force for 62 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
- Jul 10, 1997, 11:33 PM MDT (05:33 UTC)
- Expired
- Jul 11, 1997, 12:35 AM MDT
- In force
- 62 min
- Issued by
- NWS Billings, MT
- Area
- Whole counties
County Custer County, MT
The radar
The Glasgow radar (KGGW), 231 km from the middle of the area, began a volume at 05:34 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.
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 5.6 hours before the alert went out and 232 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
- 316 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 1932 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
NWS Billings, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 10, 8:35 PM MDT, 2 hours 58 minutes earlier.
Area forecast discussion, Jul 10, 8:35 PM MDT, 2 hours 58 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BILLINGS MT 830 PM MDT THU JUL 10 1997 MAIN AREA OF SEVERE WEATHER IS IN THE DAKOTAS IN AREA OF BEST INSTABILITY. UPPER LEVEL TROF PUSHING IN WESTERN CWA STILL DRIVING SHOWERS/STRONG THUNDERSTORMS. SE CAUGHT IN SUBSIDENCE BETWEEN TWO SYSTEMS. SEVERE THUNDERSTORM WATCH CANCELLED FAR EAST AND OTHER WATCH SET TO EXPIRE AT 900 PM. PER GTF CONFERENCE CALL...GTF WILL HANDLE ALL STATEMENTS. WILL BUMP DOWN POPS EAST AND CENTRAL AND CHANGE SOME WORDING SECOND PERIOD. TEMPS LOOK IN BALLPARK...BUT WILL BUMP DOWN IN A FEW SPOTS. SCARLETT BIL TW 055/072 052/073 052 574755 LVM .. 050/072 050/072 ... 577755 HDN .. 053/074 054/075 ... 574755 MLS .. 059z/074 057/076 ... 573733 4BQ .. 057/075 057/076 ... 573733 BHK .. 058/074 058/077 ... 572733 SHR TW 056/072 048/071 044 574744
The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 8:16 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Yellowstone | 64 min |
| Jul 10, 9:20 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 65 min |
| Jul 10, 9:26 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Treasure | 64 min |
| Jul 10, 10:28 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 62 min |
| Jul 10, 10:45 PM MDT | Tornado Warning | BYZ | Rosebud | 35 min |
Nearby
Severe Thunderstorm Warnings in Montana, 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.