Spot Forecast
Issued by NWS Riverton, WY

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051
FNUS75 KRIW 051122
FWSRIW

Spot Forecast for Deadline Ridge Rx...BLM WY
National Weather Service Riverton WY
522 AM MDT Wed Jun 5 2024

Forecast is based on ignition time of 0600 MDT on June 05.
If conditions become unrepresentative, contact the National Weather
Service

.DISCUSSION...

It will be another warm and windy day as high pressure builds
across the area. Expect temperatures to peak around 10 degrees
warmer than yesterday with humidity down a few percent this
afternoon. Westerly wind will increase after 0800, quickly
decreasing with sunset this evening. Thursday will be even warmer
and drier, though with a decreased wind. Shower chances increase
Friday through the weekend.

...Thunderstorms imply strong gusty and erratic winds...
...Haines index is high level haines both day and night...

.TODAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Around 66.
Min humidity........35 percent.
Wind (20 ft)........Southwest winds around 10 mph becoming west
15 to 20 mph with gusts to 30 mph after 0800.
Ridgetop wind.......Southwest 15 to 20 mph becoming west 25 to 30
mph after 0900.
Mixing height.......1100 ft AGL increasing to 5500 ft AGL by 1500.
Transport winds.....West 17 to 22 mph increasing to 26 to 30 mph
after 0900.
Smoke dispersal.....Poor (4300 knot-ft) increasing to very good
(109900 knot-ft) by 1100.
Haines Index........2.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........8   6   4   3   5   7   6   5   5   4   3   4
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............45  47  51  54  56  58  60  62  64  65  65  65
RH..............72  67  62  57  55  50  45  43  41  40  37  38
20 FT wind dir..SW  SW  W   W   W   W   W   W   W   W   W   W
20 FT wind spd..9   8   14  17  17  18  18  18  18  19  19  17
20 FT wind gust.12  11  18  23  23  26  26  26  28  30  30  26
Ridge wind dir..SW  SW  W   W   W   W   W   W   W   W   W   W
Ridge wind spd..15  15  20  25  25  30  30  30  30  30  30  25
Mix hgt (kft)...0.3 0.4 1.1 3.4 3.7 4.2 4.8 5.0 5.3 5.5 5.4 4.8
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.17  17  22  29  29  30  29  29  28  29  29  26
Haines index....2   2   2   2   2   2   2   2   2   2   2   2
SDspl kt-ft/10004   6   21  85  93  110 119 125 128 137 135 111

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Min temperature.....Around 45.
Max humidity........57 percent.
Wind (20 ft)........West winds 10 to 17 mph with gusts to around 26
                    mph becoming downslope 4 to 8 mph after 2100.
Ridgetop wind.......West 20 to 25 mph becoming variable around
10 mph by midnight.
Mixing height.......Decreasing below 500 ft AGL by 2100.
Transport winds.....West 17 to 26 mph decreasing to 9 to 16 mph
after 2200.
Smoke dispersal.....Decreasing to poor after 2100.
Haines Index........3 to 4.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........5   5   9   9   5   12  11  8   11  8   10  13
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............64  62  59  56  53  51  49  49  48  49  48  47
RH..............37  39  42  47  51  54  54  53  53  51  51  52
20 FT wind dir..W   W   W   W   SE  SE  S   W   NW  NW  NW  NW
20 FT wind spd..17  17  14  10  8   8   6   5   5   4   3   3
20 FT wind gust.26  25  19  14  13  12  7   6   6   5   4   4
Ridge wind dir..W   W   W   W   SE  SE  S   W   NW  NW  NW  NW
Ridge wind spd..25  25  20  15  15  15  10  10  10  10  10  10
Mix hgt (kft)...4.1 3.3 2.0 0.3 0.3 0.3 0.3 0.3 0.3 0.2 0.3 0.3
Transp wind dir.W   W   W   W   W   W   W   W   W   W   NW  NW
Transp wind spd.26  25  22  17  16  15  12  12  12  12  10  9
Haines index....3   3   3   3   3   3   4   4   4   4   4   4
SDspl kt-ft/100095  73  38  5   4   4   3   3   3   2   2   2

.THURSDAY...

Sky/weather.........Sunny (5-15 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Around 73.
Min humidity........22 percent.
Wind (20 ft)........Light winds becoming west 8 to 13 mph after
1200 with gusts to around 20 mph.
Ridgetop wind.......West-southwest 10 to 20 mph.
Mixing height.......300 ft AGL increasing to 8200 ft AGL by 1500.
Transport winds.....West 8 to 17 mph increasing to 18 to 21 mph
after 1300.
Smoke dispersal.....Increasing to very good by 1300.
Haines Index........4 to 5.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........11  10  6   5   7   6   5   6   6   7   9   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............47  51  55  59  62  64  67  69  70  72  72  72
RH..............52  48  43  40  36  31  26  25  25  24  24  24
20 FT wind dir..NW  W   S   S   S   S   W   W   W   W   W   W
20 FT wind spd..3   4   2   3   5   6   8   10  11  11  12  13
20 FT wind gust.4   5       4   6   7   12  14  17  17  18  19
Ridge wind dir..NW  W   S   S   S   S   W   W   W   W   W   W
Ridge wind spd..10  10  5   10  10  10  15  15  20  20  20  20
Mix hgt (kft)...0.3 0.2 0.3 1.2 2.5 4.3 6.1 6.8 7.5 8.2 7.8 7.4
Transp wind dir.NW  NW  NW  W   W   W   W   W   W   W   W   W
Transp wind spd.8   9   8   8   12  14  17  18  20  21  20  21
Haines index....4   4   4   4   4   4   5   5   5   5   5   5
SDspl kt-ft/10002   1   2   9   25  52  92  109 128 148 133 134

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
Partly cloudy. Slight chance of showers and thunderstorms. Lows
in the lower 50s. Highs in the mid 70s. Northwest winds around
7 mph.
.SATURDAY...
Partly cloudy. Slight chance of showers and thunderstorms. Lows
around 50. Highs in the mid 70s. Northwest winds around 7 mph.
.SUNDAY...
Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
North winds around 7 mph.

$$
Forecaster...Myers
Requested by...Ross Dary
Type of request...PRESCRIBED
.TAG 2415612.0/RIW
.DELDT 06/05/24
.FormatterVersion 2.0.0
.EMAIL mike.ellefson@gmail.com