974
FNUS75 KRIW 182146
FWSRIW
SPOT FORECAST FOR HORSE...WYBTF
NATIONAL WEATHER SERVICE RIVERTON WY
346 PM MDT WED JUN 18 2025
FORECAST IS BASED ON FORECAST START TIME OF 0700 MDT ON JUNE 19.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
WARMER AND DRIER CONDITIONS ARE EXPECTED THURSDAY AS HIGH
PRESSURE PERSISTS OVER THE REGION. AS THE INVERSION BEGINS TO LIFT
AROUND 1000, A BREEZY SOUTHWEST WIND WILL SET IN FOR THE
AFTERNOON. FREQUENT GUSTS TO 20 MPH ARE EXPECTED THROUGH 1800
BEFORE WIND DECREASES THROUGH SUNSET. HOWEVER, SOUTHWEST WIND IS
EXPECTED TO PICK BACK UP AROUND MIDNIGHT, KEEPING BREEZY
CONDITIONS GOING THROUGH THE OVERNIGHT HOURS. ADDITIONALLY,
HUMIDITY RECOVERY WILL BE POOR DURING THIS TIME. ALSO TO NOTE WILL
BE INCREASED INSTABILITY DURING THE PEAK BURNING PERIOD AS MIXING
HEIGHTS INCREASE TO OVER 12000 FT AGL. SIMILAR CONDITIONS ARE
EXPECTED ON FRIDAY THOUGH WITH WIND SLIGHTLY HIGHER. LITTLE CHANCE
OF PRECIPITATION THROUGH THE WEEKEND.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
THURSDAY - JUNETEENTH
SKY/WEATHER.........SUNNY (5-15 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 76.
MIN HUMIDITY........17 PERCENT.
WIND (20 FT)........LIGHT BECOMING SOUTHWEST 10 TO 15 MPH AFTER
1100 WITH GUSTS TO AROUND 22 MPH.
RIDGETOP WIND.......SOUTH 10 TO 15 MPH UNTIL 1200, THEN SOUTHWEST
20 TO 25 MPH.
MIXING HEIGHT.......INCREASING TO 12000 FT AGL AFTER 1300.
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH BECOMING SOUTHWEST
25 TO 30 MPH AFTER 1100.
SMOKE DISPERSAL.....POOR BECOMING EXCELLENT BY 1200.
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........34 PERCENT.
WIND (20 FT)........SOUTHWEST 10 TO 15 MPH WITH GUSTS TO AROUND
20 MPH.
RIDGETOP WIND.......SOUTHWEST 15 TO 20 MPH.
MIXING HEIGHT.......DECREASING TO BELOW 1000 FT AGL AFTER SUNSET.
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....BECOMING POOR AFTER 2100.
FRIDAY
SKY/WEATHER.........SUNNY (5-15 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...1 PERCENT.
MAX TEMPERATURE.....AROUND 71.
MIN HUMIDITY........21 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 10 TO 17 MPH. FREQUENT GUSTS
OF 25 TO 30 MPH DURING THE AFTERNOON.
RIDGETOP WIND.......SOUTHWEST 15 TO 20 MPH UNTIL 1100, THEN AROUND
25 MPH.
MIXING HEIGHT.......INCREASING TO 10000 FT AGL BY 1200.
TRANSPORT WINDS.....SOUTHWEST 18 TO 24 MPH UNTIL 1200, THEN 29 TO
35 MPH.
SMOKE DISPERSAL.....INCREASING TO EXCELLENT AFTER 1100.
FORECAST DAYS 3 THROUGH 5
SATURDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S.
MINIMUM HUMIDITY AROUND 29 PERCENT. SOUTHWEST WINDS AROUND 12 TO
18 MPH WITH GUSTS TO 25 MPH THROUGH MID AFTERNOON. WINDS BECOME
NORTHWESTERLY LATE IN THE DAY.
SUNDAY
COOLER. MOSTLY CLEAR. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER
50S. MINIMUM HUMIDITY AROUND 30 PERCENT. WEST WINDS 10 TO 15 MPH
WITH GUSTS TO 20 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 30S. HIGHS AROUND 60. MINIMUM
HUMIDITY AROUND 25 PERCENT. SOUTHWEST WINDS AROUND 10 MPH WITH
GUSTS TO AROUND 15 MPH.
FORECASTER...MYERS
REQUESTED BY...ANNA SAMMER, PSC3
TYPE OF REQUEST...WILDFIRE
.TAG 2515958.5/RIW
.DELDT 06/18/25
.FORMATTERVERSION 2.0.0
.EMAIL ANNA_SAMMER@FIRENET.GOV
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