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Next 12 Hours

Forecast data from the National Digital Forecast Database.

5 Day Forecast

• Wednesday
• 
• High: 48 °
• Low: 32 °
• Chance of Rain

• Thursday
• 
• High: 59 °
• Low: 36 °
• Chance Rain

• Friday
• 
• High: 64 °
• Low: 37 °
• Chance of Rain

• Saturday
• 
• High: 63 °
• Low: 41 °
• Partly Cloudy

• Sunday
• 
• High: 66 °
• Low: 45 °
• Chance of Rain

Area forecast discussion 
National Weather Service Spokane Washington 
1101 am PDT Wed may 22 2013 


Synopsis... 
the inland northwest will remain under a broad trough through at 
least the middle of next week, with disturbances riding in from 
the Pacific. This set up means several opportunities for 
precipitation. Temperatures are expected to remain cooler than 
normal through the end of this week, before some moderation. 




&& 


Discussion... 
rain wrapping around a large closed low centered near Hanford as 
of 1030 am will continue to slowly migrate north today. A strong 
wave rotating around this low will track from southeast Washington 
and the Lewiston area late this morning into northeast Washington 
and the Idaho Panhandle early this afternoon...exiting the area 
into southern British Columbia this evening. A band of steady rain 
will move through these areas as this wave passes through. A Theta 
E ridge axis extending from near Lookout Pass to Bonners Ferry 
will provide an axis of heavier rainfall with additional rainfall 
totals of a half to three quarters of an inch expected. This is on 
top of 1-1.5 inches of rain that has already fallen such that some 
places may receive rainfall totals as high as 2-2.25 inches. With 
this in mind and with a report of ponding of water on roads in 
Boundary County opted to upgrade the flood watches to advisories. 
Also, with persistent cloud cover today high temperatures were 
lowered for most areas. Jw 


&& 


Aviation... 
18z tafs: an upper low pivoting across the Columbia Basin and then 
toward western Washington over the next 24 hours will bring bands 
of rain to central/eastern Washington and northern Idaho. Coverage is 
expected to be highest through 20-22z over the eastern taf sites, 
before turning showery in the afternoon. The western taf sites 
will also see a modest chance of showers, with the easterly 
upslope flow providing the most prolonged threat near keat. 
A very moist boundary layer will lead to continued MVFR ceilings this 
morning with gradual improvement through the day. Confidence is less 
around the western taf sites but the more persistent upslope flow 
developing into keat may produce lower cigs for a longer period. 
Isolated afternoon thunderstorm are possible near the Cascades and 
central Idaho Panhandle mtns, generally away from tafs. Jw 


&& 


Preliminary point temps/pops... 
Spokane 48 36 61 44 62 41 / 90 20 20 10 50 40 
Coeur D'Alene 45 35 61 41 61 40 / 80 20 20 20 50 60 
Pullman 48 34 61 40 58 40 / 90 20 20 20 60 50 
Lewiston 56 39 67 46 65 46 / 90 20 20 20 60 50 
Colville 48 36 66 41 69 40 / 90 60 30 20 40 50 
Sandpoint 43 35 60 40 62 39 / 90 70 30 20 50 60 
Kellogg 43 34 56 42 58 41 / 80 40 30 40 60 60 
Moses Lake 55 40 67 45 70 44 / 50 20 30 20 30 20 
Wenatchee 52 40 65 45 66 46 / 70 60 40 20 30 20 
Omak 50 36 66 41 69 42 / 80 50 40 20 30 50 


&& 


Otx watches/warnings/advisories... 
Idaho...none. 
Washington...none. 
&& 


$$