471
FNUS75 KRIW 301157
FWSRIW
SPOT FORECAST FOR HORSE FIRE...USFS
NATIONAL WEATHER SERVICE RIVERTON WY
557 AM MDT WED JUL 30 2025
FORECAST IS BASED ON FORECAST START TIME OF 0700 MDT ON JULY 30.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
AN INFLUX OF ABOVE NORMAL MOISTURE SHOULD KEEP MIN RH VALUES ABOVE
20 PERCENT TODAY. THE LIGHT SOUTHWEST/SOUTH WIND WILL CONTINUE
THROUGH THE MID MORNING. WINDS INCREASE TO AROUND 15 MPH AND SHIFT
MORE TO THE SOUTH BY THE LATE MORNING. SHOWERS AND THUNDERSTORMS
WILL DEVELOP THROUGHOUT THE DAY WITH FREQUENT CLOUD TO GROUND
LIGHTNING POSSIBLE WITH ANY NEARBY STORMS. NEARBY DEVELOPING SHOWERS
OR THUNDERSTORMS MAY BE CAPABLE OF PRODUCING STRONG OUTFLOW WINDS OF
30 TO 45 MPH. WETTING RAIN POSSIBILITIES WILL UNFORTUNATELY BE LOW
ACROSS THE AREA WITH CHANCES NEAR ZERO. DRIER CONDITIONS RETURN TO
THE AREA FOR THE REMAINDER OF THE WEEK WITH NEAR ELEVATED FIRE
WEATHER CONDITIONS POSSIBLE THROUGH THE WEEKEND.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY IN THE
AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE AFTERNOON.
CHANCE OF PCPN......40 PERCENT.
CHANCE OF THUNDER...31 PERCENT.
MAX TEMPERATURE.....AROUND 68.
MIN HUMIDITY........38 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 7 TO 9 MPH WITH GUSTS TO AROUND
14 MPH UNTIL 1700, THEN LIGHT. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN
THE AFTERNOON.
MIXING HEIGHT.......2000 FT AGL UNTIL 1000, THEN 2500 FT AGL UNTIL
1100, THEN 4500 FT AGL UNTIL 1200, THEN 6500 FT
AGL UNTIL 1300, THEN 10500 FT AGL UNTIL 1500,
THEN 11000 FT AGL UNTIL 1700, THEN 7000 FT AGL.
TRANSPORT WINDS.....SOUTH 14 TO 16 MPH UNTIL 1700, THEN WEST AROUND
13 MPH.
SMOKE DISPERSAL.....POOR UNTIL 1100, THEN GOOD UNTIL 1300, THEN
VERY GOOD UNTIL 1700, THEN GOOD.
TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........15 15 20 20 20 25 35 45 55 50 45
WEATHER COV..... SCH CHC CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........ SCH CHC CHC CHC CHC CHC
CHC OF PCPN (%).0 0 0 10 10 20 30 30 40 30 30
CHC OF THDR (%).0 0 0 0 0 20 30 30 30 30 30
TEMP............50 54 58 61 64 67 67 68 68 66 63
RH..............64 61 58 52 46 40 41 42 42 41 40
20 FT WIND DIR..S SE SE SE SE SE SE SE S S W
20 FT WIND SPD..8 7 9 9 9 9 8 8 7 7 6
20 FT WIND GUST.12 12 14 14 14 14 13 12 12 11 7
MIX HGT (KFT)...0.5 0.5 2.0 2.5 4.5 6.5 9.0 11 11 9.5 7.0
TRANSP WIND DIR.S S S S S S S S S SW W
TRANSP WIND SPD.15 14 16 16 16 16 15 16 14 14 13
SDSPL KT-FT/10007 7 25 36 64 90 120 146 134 115 74
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT). SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING.
CHANCE OF PCPN......20 PERCENT.
CHANCE OF THUNDER...12 PERCENT.
MIN TEMPERATURE.....AROUND 46.
MAX HUMIDITY........76 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 2200, THEN SOUTHEAST 8 TO 11
MPH WITH GUSTS TO AROUND 17 MPH UNTIL 0200,
THEN SOUTH 8 TO 10 MPH WITH GUSTS TO AROUND 14
MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS EARLY IN THE EVENING.
MIXING HEIGHT.......5500 FT AGL UNTIL 1900. 500 FT AGL AFTER 2000.
TRANSPORT WINDS.....SOUTH AROUND 14 MPH UNTIL 1900, THEN SOUTHEAST
10 TO 18 MPH.
SMOKE DISPERSAL.....GOOD UNTIL 1900. POOR AFTER 2000.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........45 40 40 40 35 25 15 15 15 15 15 20
WEATHER COV.....SCH SCH SCH
WEATHER TYPE....RW RW RW
TSTM COV........SCH SCH SCH
CHC OF PCPN (%).20 20 10 10 10 10 10 10 0 0 0 10
CHC OF THDR (%).10 10 10 10 10 10 0 0 0 0 0 0
TEMP............61 59 56 54 52 50 49 48 47 46 47 47
RH..............38 47 55 64 66 68 70 72 73 75 75 76
20 FT WIND DIR..W S E SE E SE SE SE S S S SE
20 FT WIND SPD..6 6 5 6 8 10 11 10 10 8 8 8
20 FT WIND GUST.10 10 6 10 12 14 17 14 14 13 13 12
MIX HGT (KFT)...5.5 3.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.S SE SE SE SE SE SE SE SE S S S
TRANSP WIND SPD.14 13 10 13 15 17 18 17 17 15 15 15
SDSPL KT-FT/100064 37 6 6 7 9 9 9 9 7 7 7
THURSDAY
SKY/WEATHER.........SUNNY (20-30 PERCENT). CHANCE OF THUNDERSTORMS
EARLY IN THE AFTERNOON. CHANCE OF RAIN SHOWERS
IN THE AFTERNOON. SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON.
CHANCE OF PCPN......40 PERCENT.
CHANCE OF THUNDER...26 PERCENT.
MAX TEMPERATURE.....AROUND 73.
MIN HUMIDITY........25 PERCENT.
WIND (20 FT)........SOUTH WINDS 7 TO 8 MPH UNTIL 1500, THEN
SOUTHWEST AROUND 8 MPH. GUSTS UP TO 20 MPH.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS EARLY IN THE AFTERNOON. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS LATE
IN THE AFTERNOON.
MIXING HEIGHT.......1500 FT AGL UNTIL 1000, THEN 3000 FT AGL UNTIL
1100, THEN 6000 FT AGL UNTIL 1200, THEN 10000
FT AGL UNTIL 1400, THEN 12000 FT AGL UNTIL
1700, THEN 9500 FT AGL.
TRANSPORT WINDS.....SOUTH 14 TO 18 MPH UNTIL 1400, THEN SOUTHWEST
AROUND 20 MPH.
SMOKE DISPERSAL.....POOR UNTIL 1000. EXCELLENT AFTER 1500.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........20 20 10 10 10 10 15 20 25 35 30 30
WEATHER COV..... CHC CHC CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........ CHC CHC CHC SCH SCH SCH
CHC OF PCPN (%).10 10 10 10 10 10 40 40 40 40 40 40
CHC OF THDR (%).0 0 0 0 0 0 30 30 30 20 20 20
TEMP............48 48 51 56 61 66 69 71 71 71 71 71
RH..............76 76 75 66 55 43 32 27 25 25 24 23
20 FT WIND DIR..SE S SE SE SE S S S SW SW SW SW
20 FT WIND SPD..7 7 7 7 7 8 8 8 8 8 8 8
20 FT WIND GUST.11 13 13 13 14 14 16 16 16 14 14 14
MIX HGT (KFT)...0.5 0.5 0.5 1.5 3.0 6.0 9.0 10 11 12 11 9.5
TRANSP WIND DIR.SE SE SE S S S S SW SW SW SW SW
TRANSP WIND SPD.14 14 14 14 14 15 18 18 20 20 20 20
SDSPL KT-FT/10007 7 9 16 36 78 145 161 188 206 185 165
FORECAST DAYS 3 THROUGH 5
FRIDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE LOWER 70S.
LIGHT WINDS.
SATURDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS AROUND 70. LIGHT WINDS.
SUNDAY
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS AROUND 70. LIGHT WINDS.
FORECASTER...DZIEWALTOWSKI
REQUESTED BY...AARON BAECHLE
TYPE OF REQUEST...WILDFIRE
.TAG 2518772.1/RIW
.DELDT 07/30/25
.FORMATTERVERSION 2.0.0
.EMAIL AARONBAECHLE@GMAIL.COM
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