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Next 12 Hours

Forecast data from the National Digital Forecast Database.

5 Day Forecast

• Friday
• 
• High: 54 °
• Low: 34 °
• Chance Rain

• Saturday
• 
• High: 63 °
• Low: 36 °
• Chance of a Thunderstorm

• Sunday
• 
• High: 61 °
• Low: 39 °
• Chance of T-Storms

• Monday
• 
• High: 64 °
• Low: 39 °
• Chance of T-Storms

• Tuesday
• 
• High: 64 °
• Low: 41 °
• Chance of T-Storms

Area forecast discussion 
National Weather Service Boise Idaho 
935 am MDT Friday may 24 2013 


Discussion...cloud shield and light precipitation has developed 
over southeast Oregon and SW Idaho this morning. Measurable 
precipitation and lower/thicker cloud cover will remain north and 
west of a line from Burns-Ontario-McCall today. Areas to the 
south and east of that line will remain dry with sunny to mostly 
sunny skies. Chance of thunderstorms is minimal and will be 
limited to mountains north and west of Baker and north of McCall. The 
morning weather balloon launched from Boise shows 5-7f degrees of 
warming from yesterday below 10k feet mean sea level...which will translate to 
the surface this afternoon. Will make minor updates to chance of 
precipitation and thunderstorm over northern zones otherwise 
rest of the forecast for today is on track. 


&& 


Aviation...VFR. Scattered showers across southeast Oregon and the west 
central mountains of Idaho this morning. Showers and a slight chance 
of thunderstorms will continue over this area through 00z. Snow 
levels generally 5k to 6k feet mean sea level. Light surface winds this morning 
will become westerly up to 10 kts after 18z. Southwest winds aloft 
will average 20 kts up through 10k feet mean sea level. 


Weekend outlook...VFR Saturday. Scattered showers developing 
Saturday night over the higher terrain of eastern Oregon...and the 
west central Idaho mountains...spreading over most of southeast 
Oregon and southwest Idaho by Sunday afternoon. Snow levels rising 
to over 8k feet mean sea level by Sunday morning. Slight chance of thunderstorms 
across the entire area Sunday afternoon and evening. 


&& 


Previous discussion... 
short term...today through Saturday...main low center will track 
east-NE along the Washington/or border today. Moisture and instability near the 
track of the low will be sufficient to support scattered showers and 
isolated afternoon thunderstorms north of a Burns-Ontario-Idaho City 
line. Dry weather will continue to the south of this line. The low 
center will move well north of the area tonight for dry conditions 
which will persist into Saturday morning. Southwest flow will 
moisten up enough by the afternoon for a slight chance of showers 
and thunderstorms mainly in the mountains as a new short wave 
approaches the pacnw. Temperatures will be warmer...with highs in 
the Treasure/western Magic Valley surpassing 70f with a few 
additional degrees of warming on Saturday. 


Long term...Saturday night through Friday...the western United 
States remains entrenched in a broad upper level trough through the 
end of the week. A series of shortwave troughs will move through the 
larger scale flow and into southeast Oregon and SW Idaho through the 
week...specifically on Sunday...Tuesday...and Thursday. These 
shortwaves will bring a chance of showers and thunderstorms to much 
of the area. Temperatures will be at or below seasonal norms through 
the forecast period. 


&& 


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


$$ 


Weather.Gov/Boise 


Discussion...dg 
aviation.....Js 
previous short term...bw 
previous long term....cb