116
FXUS65 KBOI 171607
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
ISSUED BY NATIONAL WEATHER SERVICE PENDLETON OR
1007 AM MDT THU JUL 17 2025
DISCUSSION
VISIBLE SATELLITE SHOWS SMOKE ALOFT OVER MOST OF THE AREA THIS
MORNING. SMOKE IS REACHING THE GROUND AT BURNS OR, WHERE THE
VISIBILITIES WERE DOWN TO 4 MI EARLIER THIS MORNING. EXPECT HAZY
SKIES TO CONTINUE TODAY FROM WILDFIRES IN CENTRAL AND SOUTHWEST
OR. TEMPERATURES WILL BE AROUND 5-10 DEGREES WARMER THAN
WEDNESDAY, WITH LOW 100S IN THE SNAKE RIVER PLAIN TODAY AND
FRIDAY. ISOLATED THUNDERSTORMS EXPECTED ALONG THE NV BORDER
TODAY AND OWYHEE MOUNTAINS AND IN CENTRAL OR WEST OF HARNEY
COUNTY. MAIN THREATS WITH THE THUNDERSTORMS WILL BE GUSTY
ERRATIC OUTFLOW WINDS UP TO 45 MPH.
AVIATION
VFR. PATCHY SMOKE ALOFT, MVFR CONDITIONS STILL POSSIBLE FOR SE
OR THROUGH MORNING. HIGH DENSITY ALTITUDE DURING THE AFTERNOON
AND EVENING ALONG THE ID/NV BORDER AND NEAR KTWF/KJER. THUNDERSTORM
OUTFLOW GUSTS MAY REACH UP TO 40 KTS. SURFACE WINDS: LIGHT AND
VARIABLE BECOMING NW 8-12 KT, WIND GUSTS TO 20 KTS OVER SE OR
AND CENTRAL ID MNTS. WINDS ALOFT AT 10 KT MSL: W 10-20 KT.
KBOI VFR. SMOKE TO PERSIST THROUGH MORNING, WITH NEAR SURFACE
SMOKE INCREASING THROUGH AFTERNOON. MVFR CONDITIONS NOT EXPECTED
AT THIS TIME. SURFACE WINDS: VARIABLE THROUGH MORNING.
KBOI...
WEEKEND OUTLOOK...
PREV DISCUSSION
SHORT TERM...TODAY THROUGH SATURDAY NIGHT...TODAY AND FRIDAY,
AN UPPER LEVEL RIDGE OVER THE SOUTHWESTERN US WILL SHIFT TO THE NORTH.
THIS WILL BRING HOTTER TEMPERATURES, WITH HIGHS AROUND 5
DEGREES ABOVE NORMAL. THIS WILL PLACE HIGH TEMPERATURES IN THE
LOWER VALLEYS IN THE MID 90S TO AROUND 100 DEGREES.. AN UPTICK
IN MID-LEVEL MOISTURE WILL ACCOMPANY THIS PATTERN AS THE FLOW
ALOFT BECOMES MORE SOUTHWESTERLY. THIS WILL BRING A 20% CHANCE
OF SHOWERS AND THUNDERSTORMS TO THE HIGHER TERRAIN ALONG THE
ID/NV BORDER EACH AFTERNOON AND EVENING, WITH LESSER CHANCES
(10% OR LOWER) ELSEWHERE. STORMS MAY PRODUCE GUSTY WINDS 40-50
MPH. MEANWHILE, AN UPPER LEVEL TROUGH OVER THE PACIFIC NORTHWEST
WILL START TO MOVE INLAND ON SATURDAY. THIS WILL BRING A FEW
DEGREES OF COOLING TO THE AREA. THE TROUGH WILL ENHANCE WEST TO
SOUTHWEST FLOW ALOFT TODAY THROUGH SATURDAY, ALLOWING BREEZY
CONDITIONS WITH GUSTS 15-30 MPH, HIGHEST ACROSS THE CENTRAL ID
MOUNTAINS, TO DEVELOP EACH AFTERNOON AS WINDS ALOFT MIX DOWN TO
THE SURFACE. REGIONAL FIRES WILL CONTINUE TO SEND SMOKE INTO OUR
AREA AT TIMES OVER THE NEXT COUPLE OF DAYS.
LONG TERM...SUNDAY THROUGH THURSDAY...THE UPPER LEVEL TROUGH
WILL PERSIST OVER THE PACIFIC NORTHWEST EARLY NEXT WEEK, THEN
SLOWLY MOVE EAST BY THE MIDDLE OF NEXT WEEK. THIS WILL BRING
TEMPERATURES A FEW DEGREES BELOW NORMAL, WARMING BACK TO NEAR
NORMAL BY THURSDAY. THE CORE OF THE TROUGH AND MOST ACCOMPANYING
PRECIPITATION SHOULD REMAIN TO OUR NORTH, BUT A SLIGHT CHANCE
(15-25%) OF SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER NORTHERN
AREAS MONDAY AND TUESDAY, WITH LOWER CHANCES SOUTH. THE TROUGH
WILL KEEP AFTERNOON WINDS BREEZY THROUGH THE PERIOD.
BOI WATCHES/WARNINGS/ADVISORIES
ID...NONE.
OR...NONE.
DISCUSSION...KA
AVIATION...CH
SHORT TERM...ST
LONG TERM...ST
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