FNUS75 KTFX 281625
FWSTFX

SPOT FORECAST FOR PORPHYRY PEAK...USFS
NATIONAL WEATHER SERVICE GREAT FALLS MT
1025 AM MDT MON JUN 28 2010

...POTENTIAL FOR STRONG TO SEVERE CONVECTIVE DEVELOPMENT TUESDAY
AND WEDNESDAY AFTERNOONS...


FORECAST IS BASED ON IGNITION TIME OF 1020 MDT ON JUNE 28.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
AN UPPER LEVEL RIDGE OF HIGH PRESSURE WILL RESIDE OVER THE REGION
TODAY...RESULTING IN DRY WEATHER AND WARM TEMPERATURES. THE
AIRMASS BECOMES UNSTABLE TUESDAY WITH PERIODS OF THUNDERSTORMS
EXPECTED. EXPECT AFTERNOON CONVECTIVE DEVELOPMENT TO PRODUCE
SHOWERS AND THUNDERSTORMS ACROSS MONTANA. SOME STORMS MAY HAVE THE
POTENTIAL OF PRODUCING SMALL HAIL ACCOMPANIED BY GUSTY WINDS.
SOME STORMS MAY HAVE THE POTENTIAL TO BECOME SEVERE WITH LARGE
HAIL AND DAMAGING WINDS. SHOWERS WILL CONTINUE INTO AT LEAST THE
EVENING HOURS WITH THE POSSIBILITY OF A FEW CELLS LINGERING
THROUGH THE NIGHT. RIDGE TOP WINDS SHOULD NOT BE OVERLY STRONG
DURING THE DAY...BUT THUNDERSTORM PRODUCED WINDS COULD BECOME
QUITE GUSTY AND ERRATIC. TEMPERATURES WILL REMAIN PRETTY WARM
THROUGH WEDNESDAY.

.REST OF TODAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
                    TEMPERATURE.........65 AT IGNITION...MAX 73.
MIN HUMIDITY........20 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 10 MPH.
 UPR SLP/RIDGETOP...NORTHWEST WINDS 10 TO 15 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
MIN TEMPERATURE.....48.
MAX HUMIDITY........50 PERCENT.
WIND (20 FT)........SOUTH WINDS 10 TO 15 MPH.
 UPR SLP/RIDGETOP...WEST WINDS 5 TO 10 MPH.

.TUESDAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT INCREASING TO 25 PERCENT IN THE
                    AFTERNOON.
MAX TEMPERATURE.....76.
MIN HUMIDITY........25 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 10 MPH.
 UPR SLP/RIDGETOP...WEST WINDS 5 TO 10 MPH.

$$
FORECASTER...GUSTAFSON
REQUESTED BY...MIKE LONG
TYPE OF REQUEST...PRESCRIBED
.TAG 20100628.PORPH.01/TFX