Alert archive / Montana / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 8, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jun 8, 2000, 2:18 AM MDT for Chouteau County, Teton County, Montana. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Jun 8, 2000, 2:18 AM MDT (08:18 UTC)
- Expired
- Jun 8, 2000, 3:00 AM MDT
- In force
- 42 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Chouteau County, MT, Teton County, MT
The radar
The Great Falls radar (KTFX), 49 km from the middle of the area, began a volume at 08:17 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
Great_falls, MT (KTFX), launched 00:00Z, 8.3 hours before the alert went out and 70 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
- 945 J/kg
- Mixed-layer CIN
- -104 J/kg
- Mixed-layer LCL
- 2275 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 278 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.9
The text
As transmitted, in the capitals the NWS used until 2016.
704
WUUS55 KTFX 080819
SVRGTF
MTC015-099-080900-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREAT FALLS MT
218 AM MDT THU JUN 8 2000
THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WEST CENTRAL CHOUTEAU COUNTY IN NORTH CENTRAL MONTANA
EXTREME EAST CENTRAL TETON COUNTY IN NORTH CENTRAL MONTANA
* UNTIL 300 AM MDT
* AT 217 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM OVER EXTREME EAST CENTRAL TETON COUNTY...OR
ABOUT 28 MILES SOUTHEAST OF CONRAD...MOVING EAST AT 30 MPH.
REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN GREAT FALLS.
LAT...LON 4793 11162 4776 11152 4782 11129 4784 11113
4789 11079 4806 11096What 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 Great Falls, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 7, 9:00 PM MDT, 5 hours 18 minutes earlier.
Area forecast discussion, Jun 7, 9:00 PM MDT, 5 hours 18 minutes before
SOUTHWEST AND NORTH CENTRAL MONTANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 900 PM MDT WED JUN 7 2000 ...UPDATES PLANNED FOR ZONES AND STATE... STRONGEST CONVECTION IS MOVING THROUGH BLAINE COUNTY AT THIS TIME AND SHOULD BE OUT OF THAT COUNTY BY 10 PM. EARLIER DROPPED ALL COUNTIES IN GTF COUNTY WARNING AREA FROM SEVERE THUNDERSTORM WATCH EXCEPT BLAINE AND HILL. IN 900 PM ZONES WILL ALSO DROP HILL. WILL DROP MENTION OF THUNDERSTORMS ELSEWHERE FROM THE FORECAST FOR THE REMAINDER OF TONIGHT. MAY MAKE SOME MINOR ADJUSTMENTS TO THE WIND FORECASTS FOR THE REMAINDER OF TONIGHT ALSO. FORECAST LOWS FOR THU MORNING LOOK REASONABLE. ALTHOUGH IT IS NOT REAL DEFINITE FROM SATELLITE IMAGERY COULD HAVE BEEN A VORTICITY CENTER OVER W CENTRAL MT AT 00Z WHICH COULD HAVE AIDED IN THUNDERSTORM DEVELOPMENT THIS EVENING PER NGM INITIALIZATION. ETA INITIALIZATION OF A VORTICITY CENTER VCNTY LVM LOOKS UNREASONABLE. LATEST ETA SIMILAR TO PREVIOUS RUN HIGHLIGHTING NRN MT FOR A RISK OF STRONG THUNDERSTORMS AGAIN THU. LATEST RUN IS EVEN MORE UNSTABLE AND HAS EVEN HIGHER CAPES THAN ITS PREVIOUS RUN. BLANK CCF NUMBERS GTF TW 052/082 048/068 046 161366 CTB TW 050/075 046/065 044 161466 HLN TW 055/083 052/068 046 161465 BZN EE 052/085 048/067 045 161353 WEY EE 042/075 037/062 033 161353 DLN TE 050/080 045/065 042 161443 HVR BW 053/085 053/070 046 162266 LWT BW 052/088 052/068 047 161266
In the hours before
Special weather statement, Jun 7, 9:30 PM MDT, 4 hours 48 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 930 PM MDT WED JUN 7 2000 MTZ010>013-080430- BLAINE/CHOUTEAU/HILL MT-CASCADE/EASTERN TETON MT- EASTERN GLACIER/EASTERN PONDERA/TOOLE/LIBERTY MT- FERGUS/JUDITH BASIN MT- 930 PM MDT WED JUN 7 2000 ...SEVERE THUNDERSTORM WATCH CONTINUED THIS EVENING FOR BLAINE..GARFIELD..PETROLEUM..VALLEY..AND PHILLIPS COUNTIES... STRONG THUNDERSTORMS WERE MOVING OVER NORTHEAST MONTANA NEAR SUNSET WEDNESDAY EVENING. THE THUNDERSTORMS WILL MOVE OUT OF BLAINE COUNTY BY 1030 PM WITH THE SEVERE THUNDERSTORM WATCH ENDING AT THAT TIME. A SEVERE THUNDERSTORM WATCH CONTINUES OVER GARFIELD..PETROLEUM..VALLEY..AND PHILLIPS COUNTIES UNTIL 11 PM MDT.
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 6:38 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Fergus | 37 min |
| Jun 7, 7:32 PM MDT | Severe Thunderstorm Warning | TFX | Blaine | 28 min |
| Jun 8, 5:01 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Toole | 29 min |
| Jun 8, 5:29 PM MDT | Severe Thunderstorm Warning | TFX | Toole | 46 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; radar from the NEXRAD Level II archive.