855
FNUS75 KBOI 180924
FWSBOI
SPOT FORECAST FOR MEDIAN...SOUTH IDAHO INTERAGENCY DISPATCH
NATIONAL WEATHER SERVICE BOISE ID
324 AM MDT THU JUN 18 2026
FORECAST IS BASED ON FORECAST START TIME OF 0600 MDT ON JUNE 18.
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.
..WARM AND DRY TODAY WITH LIGHTER WINDS
..A CHANCE FOR THUNDERSTORMS WITH GUSTY WINDS LATE FRIDAY
DISCUSSION
POOR RH RECOVERIES THIS MORNING WITH DRY AIRMASS IN PLACE. THUS,
LOW RH'S EXPECTED TODAY WITH LIGHTER WESTERLY WINDS. OVERALL,
WINDS WILL BE LESS THAN YESTERDAY WITH AFTERNOON GUSTS AROUND 20
MPH. BETTER RH RECOVERIES TONIGHT HOWEVER, HOT TEMPERATURES ARE
EXPECTED FRIDAY AHEAD OF THE NEXT TROUGH. THUNDERSTORMS DEVELOPING
OVER THE HIGHER TERRAIN ALONG THE THE IDAHO/NEVADA BORDER FRIDAY
AFTERNOON AND WILL MOVE NORTHWARD INTO THE VALLEY LATE FRIDAY
EVENING. GUSTY OUTFLOW WINDS OF 50 TO 60 MPH IS POSSIBLE (25%
CHANCE) WITH THE STRONGEST THUNDERSTORMS.
TODAY
SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....84 TO 89.
MIN HUMIDITY........9 TO 14 PERCENT.
CWR.................0 PERCENT.
WIND - 20 FOOT......WEST 8 TO 13 MPH. GUSTS UP TO 17 MPH IN THE
MORNING INCREASING TO 20 MPH IN THE AFTERNOON.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
VENTILATION INDEX...825 EXCELLENT.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
MIN TEMPERATURE.....50 TO 55.
MAX HUMIDITY........39 TO 44 PERCENT.
CWR.................0 PERCENT.
WIND - 20 FOOT......WEST 6 TO 12 MPH WITH GUSTS TO AROUND 20 MPH IN
THE EVENING SHIFTING TO THE SOUTH AROUND 5 MPH
OVERNIGHT.
MIXING HEIGHT.......200 FT AGL.
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH.
VENTILATION INDEX...20 POOR.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....92 TO 97.
MIN HUMIDITY........11 TO 16 PERCENT.
CWR.................0 PERCENT.
WIND - 20 FOOT......NORTHEAST AROUND 6 MPH.
MIXING HEIGHT.......11500 FT AGL.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
VENTILATION INDEX...1150 EXCELLENT.
FORECASTER...SMITH
REQUESTED BY...LUCINDA HAMPTON
TYPE OF REQUEST...WILDFIRE
.TAG 2615746.0/BOI
.DELDT 06/18/26
.FORMATTERVERSION 2.0.0
.EMAIL IDSCC@FIRENET.GOV
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