Alert archive / Montana / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 7, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jun 7, 2000, 7:32 PM MDT for Blaine County, Montana. It was in force for 28 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 7, 2000, 7:32 PM MDT (01:32 UTC)
- Expired
- Jun 7, 2000, 8:00 PM MDT
- In force
- 28 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Blaine County, MT
The radar
The Glasgow radar (KGGW), 181 km from the middle of the area, began a volume at 01:33 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 7, 5:45 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 1.5 hours before the alert went out and 182 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
- 334 J/kg
- Mixed-layer CIN
- -159 J/kg
- Mixed-layer LCL
- 2825 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 253 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.8
The text
As transmitted, in the capitals the NWS used until 2016.
913 WUUS55 KTFX 080137 SVRGTF MTC005-080200- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 732 PM MDT WED JUN 7 2000 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTH CENTRAL BLAINE COUNTY IN NORTH CENTRAL MONTANA * UNTIL 800 PM MDT * AT 724 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 20 MILES SOUTHWEST OF HOGELAND...OR ABOUT 10 MILES NORTHEAST OF CHINOOK...MOVING NORTHEAST AT 40 MPH. INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. STRONG GUSTY WINDS NEAR 60 MPH AND ONE HALF INCH HAIL OR GREATER CAN BE EXPECTED FROM THIS STORM. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN GREAT FALLS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM MDT WEDNESDAY EVENING FOR NORTH CENTRAL MONTANA. LAT...LON 4874 10913 4861 10891 4886 10855 4900 10888
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 Great Falls, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 7, 3:00 PM MDT, 4 hours 32 minutes earlier.
Area forecast discussion, Jun 7, 3:00 PM MDT, 4 hours 32 minutes before
SOUTHWEST AND NORTH CENTRAL MONTANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 300 PM MDT WED JUN 7 2000 MORE MOIST AND UNSTABLE AIR THIS EVENING SHOULD BE IN NORTHERN PART OF AREA WHERE DEWPOINTS ARE HIGHER WITH UPSLOPE EAST TO NORTHEAST WINDS. SO WILL CONTINUE ISOLATED EVENING THUNDERSTORMS WITH GUSTY WINDS AND HAIL. WOULD LIKE TO SEE A SHORT WAVE TO FORECAST SEVERE THUNDERSTORMS. NEW PROGS ARE SLOWER AND DEEPER WITH STRONG UPPER TROUGH MOVING INTO THE WESTERN U.S. THURSDAY. UPSLOPE PRESSURE GRADIENTS CONTINUING INTO THURSDAY AND EXPECT EASTERLY FEED OF LOW LEVEL MOISTURE INTO NORTHERN AREAS TO CONTINUE. SO EXPECT A CHANCE OF SEVERE THUNDERSTORMS THURSDAY AFTERNOON AND EVENING...MAINLY ON PLAINS. ETA CAPE VALUES UP TO 1400 NEAR HVR THURSDAY AFTERNOON. UPPER TROUGH KICKED NORTHEAST INTO MONTANA FRIDAY...SO EXPECT UPSLOPE SHOWERS OR RAIN TO DEVELOP THURSDAY NIGHT PLAINS AND DECREASE FRIDAY AS DOWNSLOPE DEVELOPS. MORE SCATTERED PRECIPITATION THURSDAY NIGHT AND FRIDAY IN THE SOUTHWEST. OARD EXTENDED DISCUSSION...OVERALL PATTERN LOOKS UNSETTLED. SOME BIG DIFFERENCES EXIST AMONGST MODEL SOLUTIONS CONCERNING THE HANDLING OF AN UPPER LOW NEAR OR OFF THE B.C./NW U.S. COASTS EARLY SAT. BY TUE MORNING ECMWF HAS AN UPPER LOW SW OF LAKE WINNIPEG WHILE CMC AND ECMWF MODEL SOLUTIONS ARE MUCH SLOWER...PLACING AN UPPER LOW OVER CENTRAL ID/SW MT. MRF IS IN BETWEEN WITH AN UPPER LOW FORECAST OVER SW SASK. LATEST AVN EXTENSION IS SHARPER THAN THE MRF WITH THE UPPER TROUGH ASSOCIATED WITH THE UPPER LOW BUT SPEED APPEARS SIMILAR TO THAT OF THE MRF. BASED ON NCEP DISCUSSION WILL LEAN TOWARDS A MRF SOLUTION. BLANK CCF NUMBERS GTF TW 052/082 048/068 046 162366 CTB TW 050/075 046/065 044 162466 HLN TW 055/083 052/068 046 162465 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 162266
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 8, 2:18 AM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Teton | 42 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.