FNUS75 KTFX 022319
FWSTFX

SPOT FORECAST FOR MACDONALD PASS...HNF
NATIONAL WEATHER SERVICE GREAT FALLS MT
519 PM MDT FRI OCT 2 2009

FORECAST IS BASED ON IGNITION TIME OF 1758 MDT ON OCTOBER 02.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...WINTER STORM WATCH SUNDAY AFTERNOON THROUGH MONDAY AFTERNOON...

.DISCUSSION...
A LOW PRESSURE AREA ALOFT OVER SOUTHERN BRITISH COLUMBIA WILL MOVE
INTO THE PACIFIC NORTHWEST SATURDAY THEN INTO THE GREAT BASIN
SATURDAY NIGHT AND CONTINUE OVER THAT AREA ON SUNDAY. ASSOCIATED
MOISTURE WILL SPREAD OVER THE BURN SATURDAY NIGHT INTO SUNDAY.
MEANWHILE A COLDER AIR MASS WILL DEVELOP OVER THE AREA SUNDAY INTO
SUNDAY NIGHT WITH GUSTY NORTHEAST WINDS BY SUNDAY NIGHT.
SIX TO TWELVE INCHES OF SNOW ACCUMULATION IS POSSIBLE FOR THE BURN
AREA SUNDAY AFTERNOON THROUGH MONDAY AFTERNOON. BLANK

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY.
CWR.................NEAR ZERO PERCENT.
MIN TEMPERATURE.....35.
MAX HUMIDITY........65-70 PERCENT.
WIND (20 FT)........NORTHWEST UP TO 5 MPH.
RIDGE TOP WIND......SOUTHEAST 5 TO 10 MPH.
MIXING HEIGHT.......500 FT AGL.
MIXING WINDS........LIGHT WINDS.

.SATURDAY...

SKY/WEATHER.........PARTLY SUNNY.
CWR.................LESS THAN 5 PERCENT.
MAX TEMPERATURE.....NEAR 45.
MIN HUMIDITY........52-57 PERCENT.
WIND (20 FT)........NORTHEAST WINDS UP TO 5 MPH SHIFTING TO THE
                    EAST IN THE AFTERNOON.
RIDGE TOP WIND......INCREASING TO NORTHEAST 20 TO 25 MPH IN THE
                    AFTERNOON
MIXING HEIGHT.......5000 FT AGL.
MIXING WINDS........EAST 25 TO 30 MPH.

$$
FORECASTER...BLANK
REQUESTED BY...HDC
TYPE OF REQUEST...PRESCRIBED
.TAG 20091002.MACDO.01/TFX