WFO SPOKANE Warnings, Watches and Advisories for Thursday, March 1, 2018
WINTER STORM WATCH
URGENT – WINTER WEATHER MESSAGE
National Weather Service Spokane WA
335 PM PST Tue Feb 27 2018
…Heavy snow possible Wednesday Afternoon through Thursday
.A slow moving low pressure system will have the potential to
produced several rounds of heavy mountain snow Wednesday
afternoon into Thursday evening. Motorists with plans to travel
over the Cascade Passes or over Sherman Pass in north central
Washington will experience winter driving conditions as early as
Wednesday afternoon with as much as 1 to 2 feet of accumulation by
Thursday evening. The valleys of the East Slopes of the Cascades,
northeast Washington, and the north Idaho Panhandle will have the
potential for wet snow accumulations, possibly mixed with some
rain on Thursday. Lowland accumulations may vary considerably with
marginal temperatures leading to snow accumulating much more
efficiently in some areas than others.
…WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH THURSDAY EVENING…
* WHAT…Heavy mountain snow with mountain accumulations of 1 to 2
feet by Thursday evening. For the lowlands, mild temperatures
and the potential for a rain and snow mix may limit
accumulations to 3 to 6 inches. Lowland accumulations may vary
considerably with marginal temperatures leading to snow
accumulating much more efficiently in some areas than others.
* WHERE…Sandpoint, Bonners Ferry, Colville, Deer Park, Newport,
Kettle Falls, Republic, Sherman Pass, Leavenworth, Mazama,
Winthrop, Blewett Pass, and Loup Loup Pass.
* WHEN…From Wednesday afternoon through Thursday evening.
* ADDITIONAL DETAILS…Mountain travel will be impacted by this
prolonged period of heavy snow. Lowland travel may be impacted
most during the overnight and early morning hours with
temperatures in the low 30s. Heavy wet snow may break tree
branches and lead to scattered power outages.
A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.
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Keywords: Idaho, Warnings, Watches and Advisories