Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
264
FNUS75 KRIW 291623
FWSRIW
Spot Forecast for Deadline Ridge RX...WY BLM
National Weather Service Riverton WY
1023 AM MDT Wed May 29 2024
Forecast is based on ignition time of 1100 MDT on May 29.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
The tail-end of a weather disturbance passing to our north may
trigger some isolated showers and thunderstorms this afternoon.
For the most part, conditions will be dry with gusty outflow wind
the main hazard with these showers and storms. Conditions turn
drier and cooler this evening in the wake of this weather system.
Breezy and cooler conditions prevail Thursday under a mostly
sunny sky as the weather system departs to the east.
...Thunderstorms imply strong gusty and erratic winds...
...Haines index is high level haines both day and night...
.REST OF TODAY...
Sky/weather.........Mostly cloudy (50-70 percent) with a slight
chance of rain showers. A slight chance
of thunderstorms in the afternoon, mainly
between 1300 and 1700.
CWR.................5 percent.
Chance of pcpn......20 percent.
LAL.................1 until 1300, then 2 until 1700, then 1.
Max temperature.....65-68.
Min humidity........24-27 percent.
Wind (20 ft)........Wind becoming southwest 8 to 14 mph between
1000 and 1200. Occasional afternoon gusts
around 22 mph. Gusty and erratic wind gusts
30 to 40 mph expected near afternoon
showers and thunderstorms.
Ridgetop wind.......Southwest around 15 mph increasing to west
20 to 25 mph in the afternoon.
Mixing height.......Gradually increasing to around 7000 ft AGL
by 1400.
Transport winds.....Southwest 15 to 25 mph.
Smoke dispersal.....Poor until 1100, then becoming excellent
by 1400.
Haines Index........4.
TIME (MDT) 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........50 60 65 70 70 65 50
Weather cov.....SCH SCH SCH SCH SCH SCH
Weather type....RW RW RW RW RW RW
Tstm cov........ SCH SCH SCH SCH
CWR.............0 0 0 0 0 0 0
Chc of pcpn (%).20 20 20 20 20 20 10
LAL.............1 3 3 3 3 3 3
Temp............61 62 64 65 66 58 56
RH..............36 33 31 28 26 28 36
20 FT wind dir..SW SW SW SW W W W
20 FT wind spd..8 11 13 15 15 15 15
20 FT wind gust.12 16 18 20 20 20 20
Ridge wind dir..SW SW SW SW W W W
Ridge wind spd..15 25 25 25 25 25 25
Mix hgt (kft)...1.4 11 11 11 8.9 8.9 8.9
Transp wind dir.SW SW SW SW W W W
Transp wind spd.15 28 28 28 32 32 32
Haines index....4 4 4 4 4 4 4
SDspl kt-ft/100018 252 252 252 249 249 249
.TONIGHT...
Sky/weather.........Becoming dry in the early evening
with decreasing clouds. Mostly clear
(15-25 percent) by 2200.
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Min temperature.....36-39.
Max humidity........57-61 percent.
Wind (20 ft)........West wind 11 to 17 mph with occasional gusts
24 to 28 mph during the evening. Wind decreasing
to 6 to 10 mph after 0300.
Ridgetop wind.......West 20 to 25 mph decreasing to around 15 mph
after 0300.
Mixing height.......5000 ft AGL decreasing to less than 1500 ft AGL
between 2300 and 0200.
Transport winds.....West 15 to 25 mph until 2100, then gradually
decreasing to 10 to 15 mph after 0300.
Smoke dispersal.....Very Good early in the evening, then
becoming Poor after 2300.
Haines Index........3.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........40 35 30 15 10 10 10 10 10 10 12 12
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0
LAL.............1 1 1 1 1 1 1 1 1 1 1 1
Temp............54 53 52 50 47 45 44 42 41 39 38 37
RH..............40 44 47 49 51 54 56 57 58 59 60 61
20 FT wind dir..W W W W W W W W W W W W
20 FT wind spd..15 17 17 17 16 14 13 12 11 9 7 6
20 FT wind gust.20 25 25 25 24 21 19 18 17 14 11 10
Ridge wind dir..W W W W W W W W W W W W
Ridge wind spd..25 25 25 25 25 25 20 20 20 15 15 15
Mix hgt (kft)...5.0 5.0 5.0 2.8 2.8 2.8 0.6 0.6 0.6 0.6 0.6 0.6
Transp wind dir.W W W W W W NW NW NW W W W
Transp wind spd.30 30 30 24 24 24 20 20 20 16 16 16
Haines index....4 4 4 4 4 4 3 3 3 3 3 3
SDspl kt-ft/1000129 129 129 59 59 59 11 11 11 8 8 8
.THURSDAY...
Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....50 to 53.
Min humidity........Around 30 percent.
Wind (20 ft)........West wind 7 to 11 mph, increasing between
1000 and 1300 to west-northwest 12 to 16 mph
with gusts around 26 mph.
Ridgetop wind.......West-northwest 15 to 20 mph.
Mixing height.......Less than 1500 ft AGL until 0900, then
steadily increasing to 6000 ft AGL by 1400.
Transport winds.....West 10 to 15 mph until 0900, then increasing
to 20 to 25 mph between 1100 and 1400.
Smoke dispersal.....Poor until 0900, then becoming Very Good
by 1400.
Haines Index........2.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........11 27 17 10 9 9 8 7 6 5 8 12
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0
LAL.............1 1 1 1 1 1 1 1 1 1 1 1
Temp............32 36 38 41 44 46 48 49 50 51 50 50
RH..............64 55 45 37 36 33 31 30 30 29 29 29
20 FT wind dir..W W W W W W W W W W W W
20 FT wind spd..7 8 8 9 10 11 12 14 14 15 14 13
20 FT wind gust.11 13 13 14 16 17 18 21 21 22 21 19
Ridge wind dir..W W W W W W W W W W W W
Ridge wind spd..15 15 15 15 15 15 20 20 20 20 20 20
Mix hgt (kft)...0.5 0.5 0.5 3.2 3.2 3.2 5.6 5.6 5.6 6.3 6.3 6.3
Transp wind dir.NW NW NW W W W W W W W W W
Transp wind spd.15 15 15 23 23 23 25 25 25 28 28 28
Haines index....2 2 2 2 2 2 2 2 2 2 2 2
SDspl kt-ft/10007 7 7 64 64 64 123 123 123 152 152 152
.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...
Mostly clear with lows around 30. West wind around 10 mph.
.FRIDAY...
Mostly clear. Highs in the upper 50s. West wind around 10 mph.
.SATURDAY...
Mostly clear. Highs in the mid 60s. Lows in the upper 30s.
West wind around 10 mph.
.SUNDAY...
Mostly cloudy with isolated showers. Highs in the lower 60s.
Lows in the lower 40s. West wind 10 to 15 mph.
$$
Forecaster...CNJ
Requested by...Ross Dary
Type of request...PRESCRIBED
.TAG 2415153.2/RIW
.DELDT 05/29/24
.FormatterVersion 2.0.0
.EMAIL rdary@blm.gov