Tornado Warning 8, NWS Glasgow, MT

Issued

Aug 6, 2002, 6:44 PM MDT (00:44 UTC)

Expired

Aug 6, 2002, 7:45 PM MDT

In force

61 min

Issued by

NWS Glasgow, MT

Area

Counties, with a storm outline in the text

Counties Petroleum County, MT, Phillips County, MT

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

999 
WFUS55 KGGW 070044
TORGGW
MTC069-071-070145-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GLASGOW MT
643 PM MDT TUE AUG 6 2002

THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN PHILLIPS COUNTY IN NORTHEAST MONTANA
  NORTHERN PETROLEUM COUNTY IN NORTHEAST MONTANA

* UNTIL 745 PM MDT

* AT 640 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 25 MILES SOUTHWEST OF FOURCHETTE...OR ABOUT 30 MILES NORTH
  OF WINNETT...MOVING NORTHEAST AT 30 MPH.

* THE TORNADO PRODUCING STORM WILL REMAIN OVER...
  RURAL NORTHERN PETROLEUM COUNTY
  RURAL SOUTHERN PHILLIPS COUNTY

THIS STORMS HAS A HISTORY OF PRODUCING VERY LARGE HAIL...SEEK 
SHELTER NOW

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

THIS WARNING EXTENDS THE TORNADO WARNING PREVIOUSLY ISSUED FOR THE
AREA.

LAT...LON 4785 10849 4734 10837 4733 10870 4718 10875
          4710 10858 4711 10802 4752 10795 4774 10748
          4800 10744

.END
77

NWS Glasgow, MT wrote its last area forecast discussion before this tornado warning went out at Aug 6, 3:35 PM MDT, 3 hours 9 minutes earlier.

NORTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
335 PM MDT TUE AUG 6 2002

.SHORT TERM..
18Z SOUNDING WAS RELEASED TODAY AND IS SHOWING A STRONGER CAP AT 800 MB
THAN EXPECTED. A SURFACE BOUNDARY HAS SET UP FROM NEAR LWT...N OF
MALTA...N OF GGW AND NOW JUST N OF ISN AND SHOULD BE A GOOD RUNNING
BOARD FOR AN MCS THIS AFTERNOON. A LOT GOING ON AS TORNADO WATCH WAS
ISSUED RATHER QUICKLY. EARLIER THOUGHTS OF A FLASH FLOOD WATCH HAVE
BEEN SCRAPED...BUT TRAINING MULTI-CELL THUNDERSTORMS ARE POSSIBLE
TONIGHT. SINCE GROUND IS WET ACROSS THE NW ZONES (ESPECIALLY SW
PHILLIPS COUNTY)...EVENING SHIFT MAY WANT TO ISSUE A WATCH IF NEEDED.

OTHERWISE...SURFACE MAP SHOWING LOW PRESSURE OVER SE MT WITH A COLD
FRONT PUSHING SE INTO MY NW ZONES. LIKE PREVIOUS CANADIAN AIRMASSES IN
THE PAST WEEK OR TWO...IT/S ABNORMALLY STRONG (E.G. TEMPS STRUGGLING TO
REACH 60 AT CALGARY ALBERTA). AM EXPECTING THIS COOL AIR TO BE A
DOMINANT FACTOR TONIGHT (THE COOLER MAV TEMPS LOOKING GOOD).

SURFACE LOW MOVES INTO THE WESTERN DAKOTAS TOMORROW...WHILE THE UPPER
TROF SLOWLY DRIFTS ACROSS THE PACIFIC NW. SW UPPER FLOW WILL KEEP
ATMOSPHERE UNSTABLE WITH CAPES PEAKING OUT NEAR 1500 J/KG WITH LI/S
-6. COOLER MAV TEMPS LOOK BEST AND CONVECTION WILL BE ELEVATED.

UPPER TROF THEN WORKS EAST AND CUTS OFF BEFORE IT WORKS INTO SE ID
THURSDAY. SURFACE LOW WILL HANG OVER THE DAKOTAS...SO CHANCES OF RAIN
LOOK GOOD. COLD POOL OF AIR DROPS INTO ID AND WY WITH THIS SYSTEM...SO
WE SHOULDN/T HAVE TO DEAL WITH RECORD LOW MAXIMUM TEMPS.  JAMBA

.LONG TERM...
12Z AVN A BIT SLOWER WITH EXITING UPPER LOW LATER THIS WEEK. ITS TIMING
MORE IN LINE WITH ECMWF SOLUTION. UPPER TROF THEN FOLLOWS THIS SYSTEM
FROM THE NW TO BRING ANOTHER COOL AIRMASS.   JAMBA

KGGW TTB 062/084 059/078 059/078 76466663
     BTBB 054/084 053/084 053/080 053/078 7600032011
KGDV TTB 063/086 060/079 060/080 76466663
     BTBE 054/085 055/084 055/081 055/079 7600132022

.GGW...NONE.

Tornado Warnings in Montana, 2002Every tornado warning in 2002Tornadoes in 2002

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.