Alert archive / Montana / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 42, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at Jul 4, 2000, 12:06 AM MDT for Custer County, Montana. It was in force for 54 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 4, 2000, 12:06 AM MDT (06:06 UTC)
- Expired
- Jul 4, 2000, 1:00 AM MDT
- In force
- 54 min
- Issued by
- NWS Billings, MT
- Area
- Whole counties
County Custer County, MT
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 3, 9:00 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 6.1 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
- 1264 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 1591 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 267 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 7.6
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 3, 8:47 PM MDT, 3 hours 19 minutes earlier.
Area forecast discussion, Jul 3, 8:47 PM MDT, 3 hours 19 minutes before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BILLINGS MT 847 PM MDT MON JUL 3 2000 .TUE AND WED... WITH ONGOING SEVERE WEATHER AND ANOTHER SEVERE THUNDERSTORM WATCH BOX UNTIL 200 AM...HAVE NOT HAD TIME TO LOOK AT NEW MODEL DATA. WILL UPDATE AND RECONFIGURE ZONES FOR THE NEW SEVERE THUNDERSTORM WATCH. STROBIN .THU...FRI...AND SAT... WARM PATTERN LOOKS TO CONTINUE ACROSS SOUTHERN MONTANA DURING THE PERIOD. ALL MODELS INDICATING ONE MORE DAY OF SOUTHWEST FLOW ON THURSDAY...THUS WILL LEAVE IN CHANCE OF THUNDERSTORMS. MRF AND ETA 700MB TEMPERATURES ARE ROUGHLY 8 TO 12 DEGREES...WHILE AVN IS A COUPLE OF DEGREES WARMER. SINCE AVN IS HAVING PROBLEMS HANDLING TODAYS SITUATION...ESPECIALLY MOISTURE...WILL STICK MORE WITH THE ETA FOR THURSDAY AND LOWER HIGH TEMPS A COUPLE DEGREES. FRIDAY SHORTWAVE TROUGH OVER WEST COAST EJECTS OUT AND RIDES OVER TOP OF THE RIDGE IN PLACE OVER THE CENTRAL US AND IS QUICKLY REPLACED BY ANOTHER. THE TROUGH WILL ACT TO BRING IN COOLER TEMPERATURES DUE TO SLIGHTLY COOLER MID LEVEL TEMPS...BUT LOOKS TO BE TOO FAR NORTH TO BRING MUCH OF A CHANCE OF PRECIPITATION TO THE CWA...SO WILL LEAVE FRIDAY DRY FOR NOW. SATURDAY THE RIDGE BEGINS TO BUILD BACK IN TO THE AREA...WITH DRY NORTHWESTERLY FLOW AND WARMING TEMPERATURES...DEPENDING ON WHETHER ECMWF OR MRF IS TO BE FOLLOWED. ECMWF IS OLDER. WILL FOLLOW THE NEWER MRF THIS TIME. JZ/CHB BIL TTTBB 059/079 055/084 058/087 057/086 058/089 634443 52 LVM TTTBB 054/078 052/083 055/085 055/084 056/087 634443 52 HDN TTTBB 058/081 053/086 058/088 055/087 057/090 634443 52 MLS TTTBB 063/085 057/088 061/090 060/088 059/090 634443 52 4BQ TTTBB 062/086 057/089 060/092 060/089 060/091 634443 52 BHK TTTBB 061/084 056/087 060/091 059/087 059/088 634443 52 SHR TTTBB 056/080 051/085 055/089 055/087 056/090 634443 52
In the hours before
Special weather statement, Jul 3, 6:25 PM MDT, 5 hours 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 625 PM MDT MON JUL 3 2000 MTZ028>029-034>035-038>042-030200- GOLDEN VALLEY-MUSSELSHELL-BIG HORN-ROSEBUD-CARTER-CUSTER- CARBON-TREASURE-FALLON-POWDER RIVER-YELLOWSTONE-STILLWATER-PARK- SWEET GRASS-WHEATLAND- 625 PM MDT MON JUL 3 2000 ...SEVERE THUNDERSTORM WATCH CANCELLED FOR BIG HORN... CARBON...GOLDEN VALLEY...MUSSELSHELL...PARK...STILLWATER...SWEET GRASS...WHEATLAND...AND YELLOWSTONE COUNTIES... THUNDERSTORMS HAVE DIMINISHED TO BELOW SEVERE CRITERIA OVER SOUTHERN MONTANA. AS A RESULT THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THESE COUNTIES. SCATTERED SHOWERS AND THUNDERSTORMS WILL CONGTINUE OVER SOUTHERN MONTANA THIS EVENING BUT ARE NOT EXPECTED TO BE SEVERE.
Local storm report, Jul 3, 10:21 PM MDT, 1 hour 45 minutes before
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</html>The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 8:08 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 67 min |
| Jul 3, 8:13 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud, Treasure | 62 min |
| Jul 3, 9:06 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Fallon | 54 min |
| Jul 4, 1:51 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon, Stillwater, Yellowstone | 54 min |
| Jul 4, 2:05 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Musselshell | 55 min |
| Jul 4, 2:52 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 53 min |
| Jul 4, 3:35 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud, Treasure | 55 min |
| Jul 4, 3:39 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 36 min |
| Jul 4, 4:23 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 67 min |
| Jul 4, 4:32 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 43 min |
| Jul 4, 4:33 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 57 min |
| Jul 4, 4:38 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 67 min |
| Jul 4, 4:57 PM MDT | Tornado Warning | BYZ | Yellowstone | 33 min |
| Jul 4, 5:30 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Powder River | 60 min |
| Jul 4, 5:40 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 65 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2000Every severe thunderstorm warning in 2000
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.