Weather Service Report


065 
FXUS65 KBYZ 202127
AFDBYZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT 
327 PM MDT MON APR 20 2015

.SHORT TERM...VALID FOR TUE AND WED...

THE SHORT TERM IS DOMINATED BY THE RIDGE OVER THE INTERMOUNTAIN
WEST SLOWLY SHIFTING TO THE EAST. THIS WILL KEEP THE AREA MAINLY
IN CYCLONIC NORTHWEST FLOW. SEVERAL WEAK BANDS OF ENERGY WILL
MOVE THROUGH THE AREA...MAINLY OVER THE MOUNTAINS. HAVE CONTINUED
THE SLIGHT CHANCES OF PRECIP OVER THE MOUNTAINS THROUGH THE
PERIOD. TOMORROW WILL SEE WARMER TEMPERATURES APPROACHING 70
DEGREES. WINDS WILL BEGIN TO SHIFT MORE EASTERLY TOMORROW
AFTERNOON WHICH WILL HELP TO BRING MORE MOISTURE INTO THE AREA.
WINDS WILL BE OUT OF THE EAST THROUGH MUCH OF THE DAY ON
WEDNESDAY...SO EXPECTING RAIN CHANCES TO BEGIN TO INCREASE...WITH
CHANCES OVER THE MOUNTAINS AND FOOTHILLS...AND A SLIGHT CHANCE OUT
ONTO THE PLAINS. REIMER

.LONG TERM...VALID FOR THU...FRI...SAT...SUN...MON...

THE FORECAST AREA WILL STILL BE IN A BLOCKING PATTERN THROUGH THE
FORECAST PERIOD. THIS BLOCKING PATTERN INVOLVES A DEEP UPPER LOW
OVER THE GREAT LAKES AREA AND A DEEPENING TROUGH OFF THE PACIFIC
NORTHWEST. MONTANA AND NORTHERN WYOMING WILL BE IN BETWEEN THIS
SYSTEM AND SUBJECT TO A WEAK RIDDING PATTERN ON THURSDAY. THIS
WEAK RIDGING BREAKS DOWN ON FRIDAY AS THE EASTERN TROUGH SHIFTS
EAST A BIT. THIS BREAK DOWN WILL WILL ALLOW WEAK ENERGY TO KICK
OUT OF THE WESTERN TROUGH A SLIDE ACROSS THE FORECAST AREA FRIDAY
THROUGH NEXT WEEKEND. EASTERLY LOW LEVEL FLOW WILL KEEP SOME LOW
LEVEL MOISTURE AVAILABLE AND WILL THUS KEEP POPS GOING. THE BEST
CHANCE OF SHOWERS SHOULD BE SATURDAY AS A DEEP TOUGH AND SURFACE
LOW MOVES ACROSS THE AREA. LOW LEVEL EASTERLY WINDS WILL KEEP
TEMPERATURES TO SLIGHTLY ABOVE SEASONAL VALUES. TWH

&&

.AVIATION...

VFR CONDITIONS WILL BE OVER THE AREA THROUGH THE NIGHT. GUSTY
NORTHWEST WINDS AND SOME MID LEVEL CUMULUS EAST OF KBIL WILL DIE
OFF THIS EVENING. TWH

&&

.PRELIMINARY POINT TEMP/POPS...

    TUE     WED     THU     FRI     SAT     SUN     MON     
-----------------------------------------------------------
BIL 038/066 040/072 042/070 041/065 043/063 040/067 042/068
    01/B    10/B    12/W    22/W    33/W    32/W    21/B
LVM 034/069 037/074 038/070 038/063 038/062 035/064 037/066
    01/B    21/B    33/W    34/W    43/W    32/W    22/W
HDN 034/067 036/073 038/072 037/066 038/066 036/070 036/071
    01/B    10/B    12/W    22/W    33/W    32/W    21/B
MLS 032/063 034/069 036/068 038/066 039/066 038/068 038/069
    00/U    10/B    01/B    22/W    33/W    32/W    21/B
4BQ 031/064 033/069 036/068 038/064 039/064 037/068 036/070
    00/B    10/B    01/B    23/W    33/W    42/W    21/B
BHK 028/057 029/063 031/063 034/062 035/061 034/066 033/064
    00/U    10/B    00/N    23/W    33/W    42/W    21/B
SHR 028/064 035/069 037/069 037/062 038/063 036/065 036/068
    01/B    10/B    13/W    33/W    34/W    32/W    21/B

&&

.BYZ WATCHES/WARNINGS/ADVISORIES...
MT...NONE.
WY...NONE.

&&

$$
WEATHER.GOV/BILLINGS

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