Severe Thunderstorm Warning 72, NWS Great Falls, MT

Issued

Jul 9, 2000, 1:25 PM MDT (19:25 UTC)

Expired

Jul 9, 2000, 2:30 PM MDT

In force

65 min

Issued by

NWS Great Falls, MT

Area

Whole counties; the outline is the Mesonet’s reconstruction

County Blaine County, 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.

000 
WUUS55 KTFX 091926
SVRGTF
MTC005-092030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREAT FALLS MT
125 PM MDT SUN JUL 9 2000

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN BLAINE COUNTY IN NORTH CENTRAL MONTANA

* UNTIL 230 PM MDT

* AT 124 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 32 MILES SOUTHWEST OF TURNER...OR ABOUT 9 MILES
  NORTHEAST OF CHINOOK...MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  TURNER AT 215 PM MDT

VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A 
SUBSTANTIAL SHELTER. IF YOU ARE TRAVELLING ON HIGHWAY U.S. 2 BE 
PREPARED FOR LARGE HAIL AND REDUCED VISIBILITIES. 

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 4873 10916 4856 10908 4869 10834 4900 10830

NWS Great Falls, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 9, 9:30 AM MDT, 3 hours 55 minutes earlier.

SOUTHWEST AND NORTH CENTRAL MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREAT FALLS MT
930 AM MDT SUN JUL 9 2000
...UPDATES PLANNED FOR ZONES AND STATE...
AT 12Z A VORTICITY CENTER WAS OVER NW MT E OF CONTDVD. SCATTERED
THUNDERSTORMS ARE OVER THE NRN ZONES ASSOCIATED WITH THE FEATURE.
ALTHOUGH IT WAS NOT REAL DEFINITE ON WATER VAPOR IMAGERY APPEARED TO BE
ANOTHER VORTICITY CENTER OVER SE OREGON. 12Z ETA/NGM INITIALIZATIONS
WERE POOR WITH FIRST FEATURE BUT DO NOT APPEAR TOO BAD IN THEIR HANDLING
OF THE 2ND FEATURE. THIS FEATURE WILL MOVE INTO CENTRAL MT THIS
AFTERNOON. LATEST ETA HAS CENTRAL MT LIFTED INDICES DOWN TO MINUS 7 AT
18Z WITH CAPES ON THE ORDER OF 2000 JOULES/KG. SO WITH COMBINATION OF
QUITE UNSTABLE AIRMASS AND SHORTWAVE...CENTRAL/N CENTRAL MT CERTAINLY
UNDER THE GUN FOR MORE SEVERE WEATHER THIS AFTERNOON. SPC OUTLOOK AREA
LOOKS GOOD. CURRENT FORECAST LOOKS PRETTY GOOD BUT WILL DO SOME
NOWCASTING WITH 1ST PERIOD.

.EXTENDED...
FINALLY A PATTERN CHANGE IS SEEN WHICH SHOULD SPELL WELCOME RELIEF IN
THE EXTENDED WITH STRONG RIDGE IN THE MIDDLE PART OF THE NATION POKING
NORTHWARD. GRADUAL WARMING IS SEEN BUT SOME CONVECTION CAN NOT BE RULED
OUT OVER THE MOUNTAINS. PATTERN CHANGE MAY NOT LAST LONG AS ANOTHER
UPPER LOW DIVES ALONG THE PACIFIC COAST TO SET UP THE SW FLOW AGAIN.
ONLY A LITTLE TWEAKING TO THE GOING EXTENDED THIS MORNING.

BLANK

CCF NUMBERS
GTF TB 082/052 080/052 084 053332
CTB BB 078/048 077/048 082 053332
HLN TB 082/047 078/052 088 053332
BZN TB 082/045 080/048 083 054432
WEY TB 078/040 075/042 078 054432
DLN TB 082/046 080/048 082 054432
HVR BB 084/050 082/055 084 053332
LWT TB 082/048 080/052 084 054432

Severe Thunderstorm Warnings in Montana, 2000Every severe thunderstorm warning in 2000

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.