950
FNUS75 KRIW 292243
FWSRIW
SPOT FORECAST FOR MUDDY...USFS
NATIONAL WEATHER SERVICE RIVERTON WY
443 PM MDT TUE JUL 29 2025
FORECAST IS BASED ON FORECAST START TIME OF 1700 MDT ON JULY 29.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
TONIGHT, SHOWER AND THUNDERSTORM CHANCES ARE GREATEST BETWEEN 1700L
AND 2300L. THUNDERSTORMS COULD BECOME STRONG TO SEVERE WITH THE
MAIN HAZARDS BEING STRONG GUSTY WINDS ABOVE 60 MPH, LARGE HAIL, AND
FREQUENT LIGHTNING. ADDITIONALLY, ANY NEARBY SHOWERS OR THUNDERSTORMS
COULD CREATE GUSTY OUTFLOWS WITH VARYING WIND DIRECTIONS.
EXCELLENT RELATIVE HUMIDITY RECOVERY IS FORECAST OVERNIGHT WITH HIGHER
MINIMUM RELATIVE HUMIDITY VALUES ON WEDNESDAY. SOUTHEASTERLY WINDS WITH
GUSTS UP TO 20 MPH CONTINUE THROUGH 0200L WEDNESDAY MORNING BEFORE
DECREASING AND BECOMING MORE EASTERLY. LIGHT EASTERLY WINDS CONTINUE
THROUGH 1000L WEDNESDAY. EXPECT EASTERLY GUSTS UP TO 25 MPH AFTER 1300L
WEDNESDAY. GUSTY 25 MPH WINDS THEN BECOME MORE SOUTHEASTERLY AROUND
1800L AND CONTINUE THROUGH WEDNESDAY NIGHT. SHOWER AND THUNDERSTORM
CHANCES ARE GREATEST BETWEEN 1400L WEDNESDAY AND MIDNIGHT WEDNESDAY
NIGHT. THE ATMOSPHERE WILL BE MORE STABLE ON WEDNESDAY WITH MIXING
AND SMOKE DISPERSAL GOOD BETWEEN 1300L AND 1500L GENERALLY.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY. AREAS OF SMOKE EARLY IN THE
EVENING. RAIN SHOWERS LIKELY AND CHANCE OF
THUNDERSTORMS IN THE EVENING WITH CHANCES
DECREASING OVERNIGHT.
CWR.................34 PERCENT DECREASING TO 1 PERCENT OVERNIGHT.
CHANCE OF PCPN......60 PERCENT.
CHANCE OF THUNDER...42 PERCENT.
MIN TEMPERATURE.....AROUND 55.
MAX HUMIDITY........87 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS AROUND 10 MPH WITH GUSTS TO
AROUND 16 MPH UNTIL 2000 THEN NORTH AROUND 10
MPH WITH GUSTS TO AROUND 16 MPH UNTIL 2300,
THEN BECOME EAST TO SOUTHEAST AROUND 8 MPH WITH
GUSTS OF 13 MPH UNTIL 0200, THEN LIGHT AFTER
0300. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS.
RIDGETOP WIND.......EAST 10 TO 15 MPH UNTIL 2100, THEN NORTH UNTIL
2300, THEN EAST UNTIL 0400, THEN SOUTH UNTIL
0500, THEN NORTHEAST.
MIXING HEIGHT.......3000 FT AGL UNTIL 2000, THEN 1000 FT AGL.
TRANSPORT WINDS.....SOUTHEAST AROUND 17 MPH UNTIL 2000, THEN
NORTHEAST UNTIL 2100, THEN NORTH UNTIL 2400,
THEN EAST 9 TO 15 MPH.
SMOKE DISPERSAL.....GOOD EARLY IN THE EVENING DECREASING TO FAIR
LATE IN THE NIGHT UNTIL 2000. POOR AFTER 0400.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........35 45 60 60 55 45 45 45 45 30 25 20
WEATHER COV.....ARS CHC LKY CHC CHC CHC SCH SCH SCH
WEATHER TYPE....SMK RW RW RW RW RW RW RW RW
TSTM COV........SCH CHC CHC CHC CHC CHC SCH SCH SCH
CWR.............30 30 30 30 30 30 0 0 0 0 0 0
CHC OF PCPN (%).20 30 60 40 50 30 20 10 10 0 0 0
CHC OF THDR (%).20 30 40 30 30 30 10 10 10 0 0 0
TEMP............71 69 67 65 63 61 61 60 59 59 57 57
RH..............58 59 64 70 77 82 85 85 84 81 84 85
20 FT WIND DIR..E SE NE N N E SE SE NE E S NE
20 FT WIND SPD..10 10 5 10 10 8 8 8 7 6 4 5
20 FT WIND GUST.16 16 7 16 16 13 13 13 11 8 6 7
RIDGE WIND DIR..E SE NE N N E SE SE NE E S NE
RIDGE WIND SPD..15 15 10 15 15 15 15 15 15 10 10 10
MIX HGT (KFT)...4.0 3.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
TRANSP WIND DIR.SE E NE N NE N NE E NE NE E E
TRANSP WIND SPD.17 17 12 17 17 15 15 15 14 12 9 10
SDSPL KT-FT/100061 43 11 17 18 15 13 13 11 8 7 7
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE MORNING, THEN
RAIN SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS
IN THE AFTERNOON.
CWR.................8 PERCENT.
CHANCE OF PCPN......60 PERCENT.
CHANCE OF THUNDER...50 PERCENT.
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........47 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 1200, THEN EAST 9 TO 11 MPH
WITH GUSTS TO AROUND 17 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS.
RIDGETOP WIND.......EAST 10 TO 15 MPH UNTIL 1600, THEN AROUND 20
MPH.
MIXING HEIGHT.......2000 FT AGL UNTIL 1000. 5500 FT AGL AFTER 1200.
TRANSPORT WINDS.....EAST 8 TO 17 MPH UNTIL 1600, THEN SOUTHEAST 18
TO 20 MPH.
SMOKE DISPERSAL.....POOR UNTIL 1000. GOOD AFTER 1200.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........35 30 25 20 20 20 20 25 20 25 45 50
WEATHER COV..... SCH SCH SCH SCH SCH CHC CHC LKY LKY
WEATHER TYPE.... RW RW RW RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH SCH SCH CHC CHC CHC CHC
CWR.............0 0 0 0 0 0 10 10 10 10 10 10
CHC OF PCPN (%).0 0 10 10 10 20 20 20 40 50 60 60
CHC OF THDR (%).0 0 0 10 10 10 20 20 30 50 50 50
TEMP............56 58 60 63 65 67 70 72 73 74 73 72
RH..............87 87 82 76 69 63 56 52 51 47 48 53
20 FT WIND DIR..E E E E E NE NE NE E E E E
20 FT WIND SPD..4 3 4 4 5 6 9 10 10 10 11 11
20 FT WIND GUST.6 5 6 6 7 10 14 16 16 16 17 17
RIDGE WIND DIR..E E E E E NE NE NE E E E E
RIDGE WIND SPD..10 10 10 10 10 15 15 15 15 15 20 20
MIX HGT (KFT)...0.5 1.0 1.0 2.0 2.5 3.5 4.5 5.5 5.0 5.5 4.0 4.0
TRANSP WIND DIR.E E E E E E E E E E E SE
TRANSP WIND SPD.9 8 9 9 10 13 16 17 17 17 18 20
SDSPL KT-FT/10006 6 10 15 21 39 62 79 77 80 68 69
FORECAST DAYS 3 THROUGH 5
WEDNESDAY NIGHT
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS. SOUTHEAST WINDS
AROUND 11 MPH WITH GUSTS AROUND 17 MPH.
THURSDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE
MID 50S AND HIGHS IN THE LOWER 80S. SOUTHEAST WINDS AROUND 9 MPH
WITH GUSTS AROUND 20 MPH.
FRIDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE UPPER 50S AND HIGHS IN THE LOWER 80S.
SOUTH WINDS AROUND 7 MPH WITH GUSTS AROUND 16 MPH.
SATURDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN
THE UPPER 50S AND HIGHS IN THE LOWER 80S. LIGHT WINDS AROUND 5
MPH GUSTS AROUND 15 MPH .
FORECASTER...GERHARDT
REQUESTED BY...JOSHUA MCGEE
TYPE OF REQUEST...WILDFIRE
.TAG 2518832.0/RIW
.DELDT 07/29/25
.FORMATTERVERSION 2.0.0
.EMAIL WYCPC@FIRENET.GOV
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