Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
678
FNUS75 KRIW 300948
FWSRIW
Spot Forecast for Monument Ridge Rx...USFS
National Weather Service Riverton WY
348 AM MDT Sun Jun 30 2024
Forecast is based on ignition time of 0500 MDT on June 30.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
A bit above normal temperatures today with a mostly clear sky.
Elevated fire weather conditions this afternoon as winds gust
20 to 25 mph, with minimum relative humidities down to around
15%. A cold front moves through tonight. Winds shift from the
west to northwest as it passes around midnight. Rain chances
accompany this cold front, with chances picking up after
midnight, but mainly after 0300L. Peak chances (about 40%)
occur just before and around sunrise Monday. Chances dwindle
through the morning.
Cooler Monday. Currently looks like the best afternoon rain
chances remain north of the site, so about a 20% chance as
of right now. Monday afternoon is breezy, with gusts 20
to 25 mph. Current models show a dry and warming trend
through the rest of the week.
...Thunderstorms imply strong gusty and erratic winds...
...Haines index is high level haines both day and night...
.TODAY...
Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Around 76.
Min humidity........15-20 percent.
Wind (20 ft)........Light winds until 0900, then southwest 8 to 15 mph
with gusts to around 23 through the afternoon.
Ridgetop wind.......Southeast until 1100, then southwest 20 to 25 mph.
Mixing height.......12000 ft AGL after 1200.
Transport winds.....South 12 to 14 mph until 1100, then southwest
24 to 29 mph.
Smoke dispersal.....Poor until 1000. Excellent after 1200.
Haines Index........6.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........20 15 10 5 10 10 5 15 10 10 10 10
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............51 52 56 62 67 71 73 75 75 75 75 75
RH..............57 57 50 45 37 25 20 21 20 18 19 18
20 FT wind dir..N SE SE E S SW SW SW SW SW SW SW
20 FT wind spd..6 6 7 6 7 12 15 16 15 14 15 12
20 FT wind gust. 7 8 10 17 20 21 20 19 20 18
Ridge wind dir..N SE SE E S SW SW SW SW SW SW SW
Ridge wind spd..10 15 15 15 15 20 25 25 25 20 25 20
Mix hgt (kft)...0.1 0.1 0.5 1.0 3.0 7.5 11 12 12 12 12 12
Transp wind dir.SE SE SE S S SW SW SW SW SW SW SW
Transp wind spd.12 13 14 13 14 24 28 29 28 28 28 28
Haines index....6 6 6 6 6 6 6 6 6 6 6 6
SDspl kt-ft/10002 2 5 11 35 153 270 293 283 292 282 275
.TONIGHT...
Sky/weather.........Partly cloudy (25-35 percent) then becoming
mostly cloudy (65-75 percent). Isolated showers
and thunderstorms after 2 am.
CWR.................0 percent.
Chance of pcpn......30 percent.
LAL.................1 until 0400, then 2.
Min temperature.....Around 50.
Max humidity........Around 65 percent.
Wind (20 ft)........Southwest winds 7 to 11 mph with gusts to
around 16 mph until 2200, then turning west to
northwest around 9 mph. Gusty and erratic winds
expected near thunderstorms after 2 am.
Ridgetop wind.......Southwest 15 to 20 mph until 2300, then west
around 10 mph until 0300, then southeast until
0400, then northwest.
Mixing height.......11000 ft AGL decreasing to about 500 ft AGL
around 2000.
Transport winds.....Southwest around 24 mph until 2000, then
west 10 to 15 mph.
Smoke dispersal.....Excellent until 1900. Poor after 2200.
Haines Index........5 decreasing to 3 overnight.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........15 15 15 15 30 25 30 20 40 45 75 60
Weather cov..... ISO ISO
Weather type.... RW RW
Tstm cov........ ISO ISO
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).0 0 0 0 0 0 10 10 10 10 20 20
LAL.............1 1 1 1 1 1 1 1 1 2 2 2
Temp............75 75 72 67 63 59 59 57 56 53 53 53
RH..............17 20 23 28 32 42 45 49 52 57 58 61
20 FT wind dir..SW W W SW SW W W W W SE NW NW
20 FT wind spd..11 11 8 7 6 6 5 6 5 6 5 5
20 FT wind gust.16 13 11 8 8 7 7 7 6 7 6 7
Ridge wind dir..SW W W SW SW W W W W SE NW NW
Ridge wind spd..20 20 15 15 15 10 10 10 10 10 10 10
Mix hgt (kft)...11 9.0 1.0 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Transp wind dir.SW W W W W W W W NW W W NW
Transp wind spd.25 23 15 14 13 12 10 12 10 12 12 10
Haines index....5 5 5 5 5 5 3 3 3 3 3 3
SDspl kt-ft/1000239 185 12 3 2 2 2 2 2 2 2 2
.MONDAY...
Sky/weather.........Mostly cloudy (70-80 percent) then becoming
mostly sunny (30-40 percent). Scattered
rain showers early in the morning becoming
isolated late morning.
CWR.................0 percent.
Chance of pcpn......30 percent.
LAL.................1.
Max temperature.....Around 65.
Min humidity........Around 30 percent.
Wind (20 ft)........Northwest winds around 7 mph until 0700, then
west 8 to 15 mph with gusts to around 21 mph.
Ridgetop wind.......West around 15 mph until 0900. Around 25 mph
after 1700.
Mixing height.......8500 ft AGL after 1500.
Transport winds.....West around 14 mph until 0700. Around 27 mph
after 1200.
Smoke dispersal.....Poor until 0800. Very good early in the morning
increasing to excellent in the afternoon after
1200.
Haines Index........3 to 4.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........70 75 75 70 50 30 15 20 25 25 25 25
Weather cov.....ISO SCT ISO ISO
Weather type....RW RW RW RW
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).20 30 20 20 10 10 10 10 10 10 10 10
LAL.............1 1 1 1 1 1 1 1 1 1 1 1
Temp............51 51 53 55 57 59 61 62 64 64 64 64
RH..............62 64 61 55 51 45 41 36 33 32 29 29
20 FT wind dir..NW W W SW SW SW W W W W W W
20 FT wind spd..7 8 8 9 10 11 12 12 13 14 14 16
20 FT wind gust.10 13 10 11 13 16 17 18 18 19 21 21
Ridge wind dir..NW W W SW SW SW W W W W W W
Ridge wind spd..15 15 15 15 15 20 20 20 20 20 20 25
Mix hgt (kft)...0.1 0.5 1.5 2.0 3.5 5.0 6.5 7.0 8.0 8.5 8.0 8.0
Transp wind dir.W SW W W W W W W W W W W
Transp wind spd.14 15 15 16 20 23 26 26 26 26 26 28
Haines index....3 3 3 3 3 3 4 4 4 4 4 4
SDspl kt-ft/10003 6 21 31 62 101 149 164 179 193 188 190
.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...
Mostly clear. Isolated showers and thunderstorms. Lows in the
lower 40s. Highs in the lower 60s. West winds around 8 mph.
.WEDNESDAY...
Clear. Lows in the lower 40s. Highs in the upper 60s. Southwest
winds around 7 mph.
.INDEPENDENCE DAY...
Clear. Lows in the lower 40s. Highs in the mid 60s. West winds
around 8 mph.
$$
Forecaster...Wittmann
Requested by...Adam Jorck
Type of request...PRESCRIBED
.TAG 2416939.0/RIW
.DELDT 06/30/24
.FormatterVersion 2.0.0
.EMAIL Samuel.roseberry@usda.gov