662
FNUS75 KBOI 272017
FWSBOI
SPOT FORECAST FOR MITCHELL SPRINGS...BLM
NATIONAL WEATHER SERVICE BOISE ID
217 PM MDT THU AUG 27 2026
FORECAST IS BASED ON FORECAST START TIME OF 1800 MDT ON AUGUST 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE AT (208)334-9060, IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR DRY
AND WINDY CONDITIONS...
..GUSTY WINDS AND A CHANCE OF SHOWERS THROUGH SATURDAY
..SLIGHT CHANCE OF THUNDERSTORMS FRIDAY AFTERNOON
DISCUSSION
THE PRIMARY CONCERN IN THE FORECAST IS ONGOING GUSTY WINDS NEAR
THE FIRE. GUSTS IN THE OREGON HIGH DESERT WILL BE 25 TO 35 MPH
TODAY AND TOMORROW AFTERNOONS OUT OF THE SOUTHWEST GENERALLY.
INCREASING MOISTURE ALSO BRINGS AN INCREASED CHANCE OF SHOWERS AND
STORMS. SHOWERS, BOTH OVERNIGHT AND DURING THE DAY, ARE POSSIBLE
THROUGH SATURDAY. LIGHT RAINFALL IS EXPECTED ESPECIALLY OVERNIGHT,
BUT WINDS NEAR SHOWERS COULD GUST UP TO 40 MPH BRIEFLY. IN THE
AFTERNOON FRIDAY, THE MOISTURE SUPPORTS A SLIGHT CHANCE OF
THUNDERSTORMS EMBEDDED IN THE SHOWERS, WITH MODERATE RAINFALL AND
EVEN STRONGER GUSTS POSSIBLE. HOWEVER, THE MOISTURE ALSO LEADS TO
SOME BRIEFLY MUCH HIGHER RHS. AFTERNOON MINIMUM RHS RISE TO 30%
FRIDAY AND 20% SATURDAY, WHILE MORNING RECOVERIES ARE 80% SATURDAY
MORNING AND 50% SUNDAY MORNING. DRIER RHS RETURN NEXT WEEK.
TONIGHT
SKY/WEATHER.........CLOUDY. A CHANCE OF SHOWERS AND A SLIGHT CHANCE
OF THUNDERSTORMS OVERNIGHT. CHANCE OF
PRECIPITATION 30 PERCENT.
MIN TEMPERATURE.....62 TO 67.
MAX HUMIDITY........37 TO 42 PERCENT.
CWR.................10 PERCENT.
WIND - 20 FOOT......SOUTHWEST 8 TO 17 MPH WITH GUSTS TO AROUND
24 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS OVERNIGHT.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH.
VENTILATION INDEX...60 POOR.
FRIDAY
SKY/WEATHER.........CLOUDY WITH A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. CHANCE OF
PRECIPITATION 30 PERCENT.
MAX TEMPERATURE.....69 TO 75.
MIN HUMIDITY........34 TO 39 PERCENT.
CWR.................20 PERCENT.
WIND - 20 FOOT......SOUTHWEST 10 TO 17 MPH WITH GUSTS TO AROUND 25
MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH.
VENTILATION INDEX...1100 EXCELLENT.
FRIDAY NIGHT
SKY/WEATHER.........CLOUDY. A CHANCE OF SHOWERS AND A SLIGHT CHANCE
OF THUNDERSTORMS IN THE EVENING. CHANCE OF
PRECIPITATION 40 PERCENT.
MIN TEMPERATURE.....52 TO 57.
MAX HUMIDITY........78 TO 83 PERCENT.
CWR.................10 PERCENT.
WIND - 20 FOOT......SOUTHWEST 11 TO 17 MPH. GUSTS UP TO 26 MPH IN
THE EVENING DECREASING TO 20 MPH OVERNIGHT.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS IN THE EVENING.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH.
VENTILATION INDEX...60 POOR.
SATURDAY
SKY/WEATHER.........CLOUDY IN THE MORNING, THEN CLEARING LATER IN
THE DAY.
MAX TEMPERATURE.....71 TO 77.
MIN HUMIDITY........22 TO 27 PERCENT.
CWR.................0 PERCENT.
WIND - 20 FOOT......SOUTHWEST 10 TO 16 MPH WITH GUSTS TO AROUND 22
MPH.
MIXING HEIGHT.......11000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH.
VENTILATION INDEX...2200 EXCELLENT.
FORECASTER...MACFARLANE
REQUESTED BY...ANDREW ROBERTSON
TYPE OF REQUEST...WILDFIRE
.TAG 2620589.3/BOI
.DELDT 08/27/26
.FORMATTERVERSION 2.0.0
.EMAIL ORVAC@FIRENET.GOV
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