Alert archive / Montana / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 64, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jul 8, 2000, 6:16 PM MDT for Cascade County, Chouteau County, Montana. It was in force for 44 min. 4 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 8, 2000, 6:16 PM MDT (00:16 UTC)
- Expired
- Jul 8, 2000, 7:00 PM MDT
- In force
- 44 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties
Counties Cascade County, MT, Chouteau County, MT
The radar
The Great Falls radar (KTFX), 40 km from the middle of the area, began a volume at 00:18 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 8, 6:25 PM MDT | Hail 1.5 | Great Falls, MT | 2 funnel clouds also sighted 3-25 miles north of Great Falls. |
| Jul 8, 6:36 PM MDT | Hail 0.75 | Ulm, MT | |
| Jul 8, 6:36 PM MDT | Hail 1 | Floweree, MT | |
| Jul 8, 6:55 PM MDT | Hail 1.75 | Great Falls, MT |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
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 8, 5:45 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Great_falls, MT (KTFX), launched 00:00Z, 0.3 hours before the alert went out and 26 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
- 426 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 2198 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS55 KTFX 090016 SVRGTF MTC013-015-090100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 616 PM MDT SAT JUL 8 2000 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTH CENTRAL CASCADE COUNTY IN MONTANA WEST CENTRAL CHOUTEAU COUNTY IN NORTH CENTRAL MONTANA * UNTIL 700 PM MDT * AT 613 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER EXTREME NORTH CENTRAL CASCADE COUNTY...OR ABOUT 57 MILES NORTHWEST OF STANFORD...MOVING NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... RURAL SOUTHWESTERN CHOUTEAU COUNTY AT 630 PM MDT RURAL NORTHERN CASCADE COUNTY AT 630 PM MDT RURAL WESTERN CHOUTEAU COUNTY AT 650 PM MDT 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 SATURDAY EVENING FOR WESTERN MONTANA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL MIDNIGHT MDT SUNDAY MORNING FOR WESTERN MONTANA. LAT...LON 4761 11142 4748 11124 4773# 11082 4789 11106
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 Jul 8, 3:00 PM MDT, 3 hours 16 minutes earlier.
Area forecast discussion, Jul 8, 3:00 PM MDT, 3 hours 16 minutes before
SOUTHWEST AND NORTH CENTRAL MONTANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 300 PM MDT SAT JUL 8 2000 WAITING FOR CONVECTION TO KICK OFF THIS AFTERNOON. DEW POINTS SLOWLY RISING AT THIS TIME WITH SATELLITE IMAGERY INDICATING CUMULUS DEVELOPING OVER SOUTHWEST MONTANA AS WELL AS OVER BELT MOUNTAINS. MESOETA TAKES SHORTWAVE NOW OVER IDAHO AND MOVES IT ACROSS CENTRAL MONTANA THIS EVENING AND EVENTUALLY INTO NORTHEAST MONTANA. STRONG OMEGA VALUES AS WELL AS GOOD CAPE AND HELICITY NUMBERS ALL POINT TO AN ACTIVE CONVECTIVE EVENING. LATEST MESOSCALE DISCUSSION INDICATES A WATCH BOX MAY BE FORTHCOMING WITHIN THE NEXT COUPLE OF HOURS AS SPC FIGURES ACTIVITY GEARING UP BY 22Z. CLOSED UPPER LOW AND ASSOCIATED TROF MOVE FURTHER EAST SUNDAY WITH AIRMASS OVER CWA REMAINING UNSTABLE. SHORTWAVES CONTINUE TO ROTATE OUT OF TROF FOR A CONTINUED CHANCE OF AFTERNOON CONVECTION. LOW BEGINS TO LIFT OUT MONDAY WITH AXIS OF TROF FINALLY PASSING OVER CWA. UNTIL THIS HAPPENS...WILL GO WITH SCATTERED THUNDERSTORMS EACH PERIOD. TEMPERATURES CHANGE LITTLE NEXT 48 HOURS ALTHOUGH...WILL DROP THEM A TAD FOR MONDAY. EMANUEL EXTENDED DISCUSSION...NEW LONG RANGE PROGS INDICATE UPPER TROUGH HAS WEAKENED CONSIDERABLY BY TUESDAY. UPPER RIDGE BUILDS INTO EASTERN MONTANA OR DAKOTAS WEDNESDAY AND THURSDAY. THIS INDICATES TEMPERATURES WILL RISE WITH LESS CHANCE OF THUNDERSTORMS IN 3 TO 5 DAY PERIOD. OARD CCF NUMBERS GTF TB 052/080 050/077 048 085333 CTB TB 048/076 046/073 045 084333 HLN TB 051/080 049/078 052 084333 BZN TB 047/082 045/078 048 084333 WEY TB 040/078 038/074 040 084444 DLN TB 046/082 043/078 046 083333 HVR TB 054/082 052/082 054 084433 LWT TB 050/080 047/077 048 086433
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 6:11 PM MDT | Tornado Warning | TFX | Chouteau, Fergus | 64 min |
| Jul 8, 6:41 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 49 min |
| Jul 8, 6:51 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau | 54 min |
| Jul 8, 7:12 PM MDT | Tornado Warning | TFX | Fergus | 63 min |
| Jul 8, 7:30 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau | 60 min |
| Jul 8, 7:50 PM MDT | Severe Thunderstorm Warning | TFX | Judith Basin | 40 min |
| Jul 8, 8:15 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Fergus, Judith Basin | 60 min |
| Jul 8, 8:25 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Chouteau | 65 min |
| Jul 8, 9:24 PM MDT | Tornado Warning | TFX | Fergus | 36 min |
| Jul 8, 9:25 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Fergus | 50 min |
| Jul 9, 1:25 PM MDT | Severe Thunderstorm Warning | TFX | Blaine | 65 min |
| Jul 9, 2:58 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 47 min |
| Jul 9, 3:45 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 45 min |
| Jul 9, 4:57 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 48 min |
| Jul 9, 5:11 PM MDT | Severe Thunderstorm Warning | TFX | Fergus, Judith Basin | 49 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.