434
FXUS65 KTFX 161556
AFDTFX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREAT FALLS MT
956 AM MDT TUE OCT 16 2018
SYNOPSIS
A HIGH PRESSURE RIDGE PERSISTS OVER OUR AREA THROUGH THIS WEEKEND.
SIMULTANEOUSLY, FAIR WEATHER IS EXPECTED AND TEMPERATURES WILL
PRIMARILY BE ABOVE-NORMAL.
UPDATE
UPDATED FORECAST IS OUT. MAIN CHANGE WAS TO ADJUST SKY COVER
TOWARDS CURRENT TRENDS. OTHER CONCERN IS THE VALLEYS OF SOUTHWEST
MT, TEMPERATURES WILL BE SLOW TO RISE IN THE VALLEYS WITH LIGHT
WINDS, BUT LEFT CURRENT FORECAST AS IS FOR NOW. BRUSDA
AVIATION
UPDATED 1051Z.
VFR AND MAINLY NORTHWESTERLY TO NORTHERLY FLOW ALOFT PERSIST NEXT
24- HOURS AS HIGH PRESSURE ALOFT CONTINUES TO BUILD FROM THE
WEST. MULTIPLE, SUBTLE DISTURBANCES EMBEDDED WITHIN THIS FLOW
YIELD VARIABLE MID- TO UPPER-LEVEL CLOUDINESS THROUGH ABOUT
00Z/WED, WITH SKIES EXPECTED TO CLEAR CONSIDERABLY THEREAFTER.
SURFACE WINDS LIKELY REMAIN LIGHT.
- JASZKA
PREV DISCUSSION
/ISSUED 451 AM MDT TUE OCT 16 2018/
TODAY THROUGH NEXT TUESDAY...A HIGH PRESSURE RIDGE ALOFT DRIFTS
EASTWARD OVER OUR CWA THROUGH MONDAY OF NEXT WEEK, RESULTING IN A
PROLONGED PERIOD OF FAIR WEATHER. HOWEVER, THIS RIDGE IS STILL
EXPECTED TO WEAKEN TEMPORARILY WEDNESDAY THROUGH FRIDAY AS SHORTWAVE
DISTURBANCES MOVE GENERALLY EASTWARD AND SOUTHEASTWARD OVER WESTERN
AND CENTRAL CANADA, TOWARD THE GREAT LAKES. SIMULTANEOUSLY, A
CUT-OFF LOW ALOFT OVER THE SOUTHWEST U.S. FINALLY EJECTS
NORTHEASTWARD. A FEW RAIN AND MOUNTAIN SNOW SHOWERS MAY AFFECT
SOUTHWEST MT NEXT WEEK TUESDAY AS THE RIDGE MOVES FARTHER EASTWARD
AND A SHORTWAVE TROUGH OVERSPREADS OUR REGION FROM THE SOUTHWEST.
HIGH AND LOW TEMPERATURES WILL BE NEAR OR ABOVE-NORMAL THROUGH
THE PERIOD. IN GENERAL, WEDNESDAY AND SATURDAY LOOK TO BE THE
WARMEST DAYS, WITH HIGHS REACHING WELL INTO THE 60'S FOR MOST
PLAINS AND VALLEY LOCATIONS.
- JASZKA
PRELIMINARY POINT TEMPS/POPS
GTF 61 34 65 39 / 0 0 0 0
CTB 60 31 65 37 / 0 0 0 0
HLN 60 33 63 37 / 0 0 0 0
BZN 56 29 61 31 / 0 0 0 0
WEY 52 20 57 23 / 0 0 0 0
DLN 56 29 59 31 / 0 0 0 0
HVR 64 35 67 37 / 0 0 0 0
LWT 58 34 64 37 / 0 0 0 0
TFX WATCHES/WARNINGS/ADVISORIES
NONE.
HTTP://WWW.WEATHER.GOV/GREATFALLS
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page