237
FNUS75 KRIW 241622
FWSRIW
SPOT FORECAST FOR TEST SPOT FOR RIW BACKUP...TEST
NATIONAL WEATHER SERVICE RIVERTON WY
ISSUED BY NATIONAL WEATHER SERVICE CHEYENNE WY
1022 AM MDT WED APR 24 2024
FORECAST IS BASED ON FORECAST START TIME OF 1100 MDT ON APRIL 24.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
THIS IS A TEST SPOT FORECAST IN SUPPORT OF SERVICE BACKUP FOR RIW/CYS.
THIS IS ONLY A TEST.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
..HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). SLIGHT CHANCE OF
THUNDERSTORMS EARLY IN THE AFTERNOON. SLIGHT
CHANCE OF RAIN SHOWERS IN THE AFTERNOON.
CWR.................0 PERCENT.
CHANCE OF PCPN......20 PERCENT.
LAL.................1.
MAX TEMPERATURE.....AROUND 67.
MIN HUMIDITY........23 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 10 TO 14 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE
AFTERNOON.
RIDGETOP WIND.......SOUTHWEST 15 TO 20 MPH.
MIXING HEIGHT.......900 FT AGL INCREASING TO 10200 FT AGL IN THE
AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 15 TO 21 MPH.
SMOKE DISPERSAL.....POOR (12300 KNOT-FT) INCREASING TO EXCELLENT
(166700 KNOT-FT) IN THE AFTERNOON.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
FIRE GROWTH.
TIME (MDT) 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........22 30 43 54 67 65 54
WEATHER COV..... SCH SCH SCH SCH SCH
WEATHER TYPE.... RW RW RW RW RW
TSTM COV........ SCH SCH
CWR.............0 0 0 0 0 0 0
CHC OF PCPN (%).0 10 20 20 20 20 20
LAL.............1 1 1 1 1 1 1
TEMP............55 58 62 66 63 66 66
RH..............41 34 28 24 29 26 25
20 FT WIND DIR..SW SW W W SW SW SW
20 FT WIND SPD..10 10 11 14 13 14 13
20 FT WIND GUST.13 14 16 18 18 18 17
RIDGE WIND DIR..SW SW SW SW SW SW SW
RIDGE WIND SPD..15 20 20 20 20 20 20
MIX HGT (KFT)...0.9 9.8 9.8 9.8 10 10 10
TRANSP WIND DIR.S SW SW SW W W W
TRANSP WIND SPD.15 20 20 20 21 21 21
HAINES INDEX....4 4 4 4 4 4 4
SDSPL KT-FT/100012 167 167 167 184 184 184
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (55-65 PERCENT) THEN BECOMING
PARTLY CLOUDY (40-50 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
LAL.................1.
MIN TEMPERATURE.....AROUND 40.
MAX HUMIDITY........76 PERCENT.
WIND (20 FT)........WEST WINDS 9 TO 13 MPH SHIFTING TO THE
NORTHWEST 7 TO 8 MPH LATE IN THE EVENING, THEN
SHIFTING TO THE NORTHEAST 6 TO 7 MPH LATE IN
THE EVENING SHIFTING TO THE SOUTHWEST AROUND 6
MPH AFTER 3 AM.
RIDGETOP WIND.......WEST AROUND 15 MPH SHIFTING TO THE NORTH IN THE
LATE EVENING AND OVERNIGHT, THEN SHIFTING TO
THE SOUTHWEST AFTER 3 AM.
MIXING HEIGHT.......8400 FT AGL DECREASING TO 500 FT AGL IN THE
LATE EVENING AND OVERNIGHT.
TRANSPORT WINDS.....WEST 13 TO 21 MPH SHIFTING TO THE NORTH AROUND
12 MPH OVERNIGHT, THEN SHIFTING TO THE
NORTHWEST AFTER 3 AM.
SMOKE DISPERSAL.....EXCELLENT (151900 KNOT-FT) DECREASING TO POOR
(4500 KNOT-FT) IN THE LATE EVENING AND
OVERNIGHT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
FIRE GROWTH.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........54 52 53 54 57 65 59 57 54 50 46 42
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10 10 10 10
LAL.............1 1 1 1 1 1 1 1 1 1 1 1
TEMP............65 63 57 54 52 51 49 47 45 43 42 42
RH..............26 26 37 41 48 52 56 60 65 73 73 73
20 FT WIND DIR..W W W NW N NE N E N SW W SW
20 FT WIND SPD..13 10 9 8 7 7 6 6 6 6 6 6
20 FT WIND GUST.17 14 12 11 10 10 10 10 8 10 10 10
RIDGE WIND DIR..W W W N N N NE NE NE SW SW SW
RIDGE WIND SPD..15 15 15 15 15 15 10 10 10 10 10 10
MIX HGT (KFT)...8.4 8.4 8.4 0.7 0.7 0.7 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.W W W W W W N N N NW NW NW
TRANSP WIND SPD.21 21 21 13 13 13 12 12 12 12 12 12
HAINES INDEX....4 4 4 4 4 4 4 4 4 4 4 4
SDSPL KT-FT/1000152 152 152 7 7 7 5 5 5 5 5 5
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT) THEN BECOMING
MOSTLY CLOUDY (70-80 PERCENT). ISOLATED RAIN
SHOWERS IN THE MORNING, THEN SCATTERED RAIN
SHOWERS AND ISOLATED THUNDERSTORMS IN THE
AFTERNOON.
CWR.................4 PERCENT.
CHANCE OF PCPN......40 PERCENT.
LAL.................1 UNTIL 1200, THEN 2.
MAX TEMPERATURE.....AROUND 63.
MIN HUMIDITY........28 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 6 TO 13 MPH SHIFTING TO THE
WEST AROUND 15 MPH LATE IN THE AFTERNOON. GUSTY
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS
IN THE AFTERNOON.
RIDGETOP WIND.......SOUTHWEST 10 TO 15 MPH INCREASING TO AROUND 20
MPH IN THE AFTERNOON.
MIXING HEIGHT.......500 FT AGL INCREASING TO 1500 FT AGL LATE IN
THE MORNING, THEN INCREASING TO 6700 FT AGL
EARLY IN THE AFTERNOON DECREASING TO 5300 FT
AGL LATE IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 12 TO 16 MPH SHIFTING TO THE SOUTHWEST
AROUND 21 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (4500 KNOT-FT) INCREASING TO GOOD (95300
KNOT-FT) EARLY IN THE MORNING INCREASING TO
VERY GOOD (120700 KNOT-FT) IN THE AFTERNOON IN
THE AFTERNOON.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........38 35 33 34 37 43 50 59 67 73 75 76
WEATHER COV..... ISO ISO SCT SCT SCT SCT ISO
WEATHER TYPE.... RW RW RW RW RW RW RW
TSTM COV........ ISO ISO ISO ISO ISO ISO
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).10 10 10 10 10 20 20 30 30 40 30 20
LAL.............1 1 1 1 1 1 2 2 2 2 2 2
TEMP............41 44 47 51 54 58 62 61 60 59 58 57
RH..............76 68 60 54 45 36 28 29 31 33 36 38
20 FT WIND DIR..S S S S SW SW SW SW SW SW SW W
20 FT WIND SPD..6 6 6 7 9 11 13 13 13 13 13 15
20 FT WIND GUST.8 10 10 10 11 14 17 18 18 17 18 19
RIDGE WIND DIR..S S S SW SW SW SW SW SW SW SW SW
RIDGE WIND SPD..10 10 10 15 15 15 20 20 20 20 20 20
MIX HGT (KFT)...0.5 0.5 0.5 1.5 1.5 1.5 6.7 6.7 6.7 5.3 5.3 5.3
TRANSP WIND DIR.SE SE SE S S S SW SW SW SW SW SW
TRANSP WIND SPD.12 12 12 16 16 16 21 21 21 21 21 21
HAINES INDEX....3 3 3 3 3 3 3 3 3 3 3 3
SDSPL KT-FT/10005 5 5 21 21 21 121 121 121 95 95 95
FORECASTER...CYS
REQUESTED BY...TEST
TYPE OF REQUEST...WILDFIRE
.TAG 2412299.0/RIW
.DELDT 04/24/24
.FORMATTERVERSION 2.0.0
.EMAIL LAUREN.GROSS@NOAA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page