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Next 12 Hours

Forecast data from the National Digital Forecast Database.

5 Day Forecast

• Wednesday
• 
• High: 68 °
• Low: 46 °
• T-Storms

• Thursday
• 
• High: 73 °
• Low: 48 °
• Partly Cloudy

• Friday
• 
• High: 77 °
• Low: 48 °
• Partly Cloudy

• Saturday
• 
• High: 81 °
• Low: 55 °
• Clear

• Sunday
• 
• High: 86 °
• Low: 59 °
• Partly Cloudy

Area forecast discussion...corrected 
National Weather Service Boise Idaho 
314 PM MDT Wednesday Jun 19 2013 


Short term...tonight through Friday...elongated upper low will 
support showers and thunderstorms over southeast Oregon and 
southwest Idaho through this evening. Isolated stronger storms 
will produce gusty winds to 45 miles per hour and small hail. As the air mass 
stabilizes and upper dynamics shift north the showers and 
thunderstorms will dissipate across southern zones. Precipitation 
will continue in Baker County and the west central and Boise 
Mountains of Idaho. For Thursday into Friday the low continues to 
gradually lift which will further lower the chance of showers and 
thunderstorms over northern zones. Most of southeast Oregon and areas of 
SW Idaho from the Snake River to the Nevada border will remain dry for 
Thursday and Friday. Temperatures will gradually warm through 
Friday though remain 10-15f degrees below normal. 


Long term...Friday night through Wednesday...an upper level trough 
exiting to the east early Saturday will give way to a shortwave ridge 
which will build in over the area late Saturday and early Sunday. 
Conditions will dry out under the ridge and temperatures on Sunday 
will increase back to near normal values. But by Sunday afternoon 
another shortwave ridge will usher in a broad swath of deep Pacific 
moisture. This will bring a chance of moderate quantitative precipitation forecast to much of the 
County Warning Area Sunday night into Monday. There are some model differences 
regarding where the tropical moisture tap will set up...with the 
European model (ecmwf) painting most of the moisture and quantitative precipitation forecast north of our County Warning Area. 
However the GFS /and overall model trend/ is the bring the moisture 
tap into our County Warning Area through Monday. By Tuesday conditions will begin to 
dry out as high pressure builds over the Desert Southwest causing a 
rise in temperatures over southeast Oregon and SW Idaho. 


&& 


Aviation...low-VFR ceilings around much of the County Warning Area with widespread 
showers as a low pressure system moves through. Scattered 
thunderstorms as well...especially this afternoon over the higher 
terrain. Mountains will be be obscured. After 03z the main area of 
precipitation will shift north...only affecting Baker County and the west 
central Idaho mountains through the night. Gusty winds and small 
hail possible with thunderstorms today. West-northwest surface winds at 10-20 
kts...decreasing overnight. Westerly winds aloft will average 20-25 
kts up through 10k feet mean sea level. 


&& 


Boi watches/warnings/advisories... 
Idaho...none. 
Or...none. 


&& 


$$ 


Weather.Gov/Boise 


Short term...dg 
long term....cb/wh 
aviation.....Cb