963
FNUS75 KBOI 202220
FWSBOI
SPOT FORECAST FOR ROBINSON RX...PAYETTE NF
NATIONAL WEATHER SERVICE BOISE ID
420 PM MDT MON APR 20 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 MDT ON APRIL 21.
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.
...DRY WITH SOUTHERLY AFTERNOON WINDS AND INCREASING CLOUDS
TUESDAY...
...COLD FRONT TUESDAY NIGHT WITH SHOWERS, THUNDERSTORMS AND
ERRATIC WINDS...
DISCUSSION
TUESDAY WILL BRING ANOTHER WARM AND DRY DAY WITH SOUTHERLY WINDS
INCREASING IN THE AFTERNOON AS A LOW PRESSURE SYSTEM APPROACHES FROM
THE WEST. SHOWERS AND THUNDERSTORMS WILL DEVELOP SUNDAY EVENING,
ACCOMPANYING THE PASSAGE OF A COLD FRONT BETWEEN 8 AND 11PM LOCAL TIME.
THE COLD FRONT WILL BRING GUSTY NORTHWESTERLY WINDS WHILE SHOWERS AND
THUNDERSTORMS COULD BRIEFLY SHIFT WINDS TO THE SOUTH TO SOUTHWEST.
WEDNESDAY WILL SEE MUCH COOLER CONDITIONS WITH RAIN, SNOW AND BREEZY
NORTHWESTERLY WINDS.
TUESDAY
SKY/WEATHER.........SUNNY IN THE MORNING, INCREASING CLOUDS IN
THE AFTERNOON.
MAX TEMPERATURE.....61 TO 66.
MIN HUMIDITY........27 TO 35 PERCENT.
CWR.................0 PERCENT.
WIND - 20 FOOT......DOWNSLOPE 3 TO 5 MPH, BECOMING SOUTH 6 TO 10 MPH
WITH GUSTS TO AROUND 16 MPH IN THE AFTERNOON.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 20 MPH.
VENTILATION INDEX...1100 EXCELLENT.
TUESDAY NIGHT
SKY/WEATHER.........A 20 PERCENT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE EVENING, THEN RAIN SHOWERS, A SLIGHT CHANCE OF
THUNDERSTORMS AFTER 8PM LOCAL. CHANCE OF PRECIPITATION
80 PERCENT AFTER MIDNIGHT.
MIN TEMPERATURE.....33 TO 38.
MAX HUMIDITY........95 TO 100 PERCENT.
CWR.................60 PERCENT.
WIND - 20 FOOT......SOUTH 6 TO 10 MPH IN THE EVENING, BECOMING NORTHWEST
12 TO 18 MPH WITH GUSTS TO AROUND 26 MPH AFTER 8 PM.
GUSTY AND ERRATIC WINDS TO 40 MPH EXPECTED NEAR
THUNDERSTORMS.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 20 MPH.
VENTILATION INDEX...80 POOR.
WEDNESDAY
SKY/WEATHER.........RAIN AND SNOW SHOWERS. CHANCE OF
PRECIPITATION NEAR 100 PERCENT.
MAX TEMPERATURE.....38 TO 43.
MIN HUMIDITY........88 TO 93 PERCENT.
CWR.................90 PERCENT.
WIND - 20 FOOT......NORTHWEST 13 TO 17 MPH WITH GUSTS TO AROUND 24 MPH.
MIXING HEIGHT.......2500 FT AGL.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
VENTILATION INDEX...500 GOOD.
FORECASTER...GROENERT
REQUESTED BY...ANDY GERINGER
TYPE OF REQUEST...PRESCRIBED
.TAG 2610990.0/BOI
.DELDT 04/21/26
.FORMATTERVERSION 2.0.0
.EMAIL ANDREW.GERINGER@USDA.GOV,ROSS.HOLLOWAY@USDA.GOV,NICHOLAS.R.SCHREINER@USDA.GOV
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