Area Forecast Discussion
Issued by NWS Missoula, MT

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

000
FXUS65 KMSO 242107
AFDMSO

Area Forecast Discussion
National Weather Service Missoula MT
307 PM MDT FRI APR 24 2015

...SNOW TO IMPACT ROADWAYS OVER MOUNTAIN PASSES TONIGHT...AND
AGAIN SATURDAY OVERNIGHT...

.DISCUSSION...

A relatively cool Pacific storm system will bring low elevation
rain and high elevation snow/rain mix to the Northern Rockies
through Sunday evening. Snow will create hazardous driving
conditions at times (overnight and morning hours) over area
mountain passes, particularly those along the Continental Divide
and above 6000 feet. Additionally, road surfaces near Butte,
Anaconda, and Georgetown Lake may see brief snow/slush on Saturday
morning and again on Sunday morning. Elsewhere, light rainfall
and cool temperatures will be commonplace.

Sunday night through Tuesday night, high pressure will return to
the Northern Rockies. Dry and warm conditions will prevail during
this time. In fact, the warmest temperatures of the year are
likely on afternoon.

High pressure is expected to break down Wednesday through next
weekend, with a series of weak storm systems moving across the
Northern Rockies. There is little consistency among operational
forecast models concerning the amount of moisture to be present
and the timing of each surface front. The current forecast
reflects low confidence and closely resembles climatology.

&&

.AVIATION...Rain showers will continue to bring low visibility
and ceilings to KBTM through this afternoon. At around 25/0000z,
showers are expected to gradually taper off but showers could
linger around KBTM through most of this evening. Cooler air will
be moving in tonight and will cause rain to transition to light snow
at KBTM. KSMN will also continue to see low ceilings and rain
showers through this evening. Another round of precipitation
develops late Saturday and will once again be focused over KBTM
and KSMN. This system looks to be stronger than the current one,
thus lower ceilings and visibilities should be expected Saturday
evening through Sunday.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...None.
ID...None.
&&

$$


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.