783
FXUS65 KMSO 192024
AFDMSO
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
224 PM MDT TUE OCT 19 2021
DISCUSSION
DRY AND BREEZY CONDITIONS WILL CONTINUE FOR MOST OF
THE NORTHERN ROCKIES TODAY, WHICH MEANS NOW IS A GOOD TIME TO
REMIND FOLKS THAT ALTHOUGH IT IS THE MIDDLE OF OCTOBER, FUELS ARE
STILL VERY DRY, AS ARE HUMIDITY LEVELS ACROSS THE BOARD. WITH DRY
AND WINDY CONDITIONS PERSISTING, REMEMBER TO DO YOUR PART TO
PREVENT HUMAN-CAUSED WILDFIRE STARTS UNTIL THE REGION CAN GET
SOME IMPACTFUL PRECIPITATION TO HELP EXTINGUISH THE ONES THAT
HAVE RECENTLY STARTED.
SPEAKING OF PRECIPITATION...A BRIEF ROUND OF VALLEY RAIN AND SNOW
ABOVE 7000 FEET WILL OCCUR WEDNESDAY EVENING THROUGH THURSDAY
MORNING, MAINLY ALONG THE MONTANA/IDAHO BORDER NORTH OF I-90 INTO
NORTHWEST MONTANA. NOT MUCH IS EXPECTED TO FALL, BUT WE'LL TAKE
WHAT WE CAN GET.
AND THEN COMES THE MUCH MORE IMPACTFUL, VIGOROUS, AND LONG-
LASTING WEATHER SYSTEM EXPECTED TO ENTER FROM THE WEST LATE
FRIDAY INTO SATURDAY, BRINGING MULTIPLE PERIODS OF VALLEY RAIN AND
MOUNTAIN SNOW THROUGH THE WEEKEND INTO EARLY NEXT WEEK. THIS WILL
BEGIN THE LARGE- SCALE WEATHER PATTERN CHANGE EXPECTED FOR THE
WESTERN UNITED STATES TO A MUCH COOLER AND MUCH WETTER PATTERN,
PARTICULARLY MONDAY, TUESDAY, AND WEDNESDAY OF NEXT WEEK (OCT
25-27). TO START, SNOW LEVELS WILL BE ROUGHLY ABOVE 6000 FEET,
BUT WILL STEADILY LOWER THROUGH THE FIRST HALF OF NEXT WEEK.
IN FACT, CONFIDENCE IS INCREASING THAT SNOW LEVELS WILL REACH AS
LOW AS 4000 FEET BY TUESDAY (OCT 26).
AVIATION
PERSISTENT EAST TO SOUTHEAST WINDS WILL CONTINUE AT
ALL TERMINALS ACROSS THE NORTHERN ROCKIES THIS EVENING, IMPACTING
KMSO AND KBTM MOST PROMINENTLY. GUSTS TO 30 KNOTS HAVE BEEN
OBSERVED ALREADY AND SHOULD BE EXPECTED TO CONTINUE THROUGH
20/0400Z BEFORE EASING SLIGHTLY. WINDS MAY CONTINUE TO BE SOMEWHAT
BREEZY AFTER 20/0600Z, BUT ARE EXPECTED TO DIMINISH ON WEDNESDAY.
MSO WATCHES/WARNINGS/ADVISORIES
MT...NONE.
ID...NONE.
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