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Next 12 Hours

Forecast data from the National Digital Forecast Database.

5 Day Forecast

• Thursday
• 
• High: 63 °
• Low: 36 °
• Chance of Rain

• Friday
• 
• High: 59 °
• Low: 37 °
• Chance of T-Storms

• Saturday
• 
• High: 63 °
• Low: 41 °
• Chance of Rain

• Sunday
• 
• High: 66 °
• Low: 41 °
• Partly Cloudy

• Monday
• 
• High: 77 °
• Low: 45 °
• Partly Cloudy

Area forecast discussion 
National Weather Service Spokane Washington 
1043 am PDT Thu may 23 2013 


Synopsis... 
cool, showery weather will continue over the inland northwest due 
to a lingering upper low. Snow will also be possible over the 
mountains. Conditions could moderate a bit by the weekend, as the 
low moves out of the area, but it will be replaced by another cool 
low sometime early next week. 


&& 


Discussion... 
a closed low near Seattle this morning will remain west of the 
Cascades today. Low level southeast upslope flow and abundant 
boundary layer moisture will continue to produce scattered rain 
showers along the east slopes of the Cascades this morning with 
isolated showers in the Wenatchee area. Elsewhere shower activity 
will hold off until the afternoon hours when the atmosphere 
destabilizes. With no organized disturbance to kick off these 
showers...they should be mostly isolated in nature...except 
scattered Wenatchee area and numerous along the east slopes with 
the low level upslope into these areas and closer proximity to low. 
Latest model guidance still points at the east slopes of the 
Cascades, and areas near the Blue Mountains/Camas Prairie as 
having the best instability for isolated thunderstorms so this was 
maintained in the latest forecast. With persistent cloud cover 
expected today for the Wenatchee area, Okanogan Valley, and east 
slopes of the Cascades high temperatures were lowered a bit. Also 
lowered Spokane area a few degrees with stratus holding temps down 
a bit this morning. Jw 


&& 


Aviation... 
18z tafs: a closed low west of the Cascades will promote showers 
over the inland northwest today with an increase in activity this 
afternoon as the atmosphere destabilizes. Showers will be mainly 
focused near the Cascades (closer to the low center), and in the 
mountains but with instability over all the area can not completely 
rule out a shower for any locations. Instability however will be 
greatest near the Cascades and near the Blue Mountains where an 
isolated thunderstorm is possible between 21z today through 03z this 
evening. Showers should quickly end between 3-5z with the loss of 
daytime heating before the next wave brings an increase in clouds 
12-18z with the chance for showers increasing again...mainly near 
the Cascades and over southeast Washington. Ceilings should stay 
primarily VFR at the taf sites. A brief period of bkn020-030 
stratocumulus is possible for most taf sites through 19-20z today. 
Jw 


&& 


Preliminary point temps/pops... 
Spokane 58 41 60 42 64 45 / 20 20 40 30 20 10 
Coeur D'Alene 58 39 59 41 64 43 / 20 20 50 40 20 20 
Pullman 60 38 56 40 64 42 / 20 20 50 20 20 20 
Lewiston 66 45 63 45 71 49 / 20 10 50 20 20 20 
Colville 63 38 67 42 69 43 / 30 30 50 50 40 30 
Sandpoint 57 36 62 40 63 40 / 20 20 60 50 30 30 
Kellogg 55 39 56 41 60 44 / 20 20 60 50 40 40 
Moses Lake 64 43 68 46 72 47 / 20 20 30 20 10 10 
Wenatchee 59 44 66 48 69 49 / 40 30 40 20 10 10 
Omak 62 38 68 42 69 43 / 30 30 40 30 30 20 


&& 


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


$$