Spot Forecast
Issued by NWS Cheyenne, WY
Issued by NWS Cheyenne, WY
276
FNUS75 KCYS 251236
FWSCYS
Spot Forecast for Eagle Eye...Great Plains Dispatch
National Weather Service Cheyenne WY
636 AM MDT Tue Jun 25 2024
If conditions become unrepresentative, contact the National Weather
Service at (307) 772-2227
.DISCUSSION...
Another warm and dry day is expected today. A frontal boundary will set
up very close to the fire location through the day today. This could
result in more significant fluctuations during the day between drier/
hotter air in northwest flow south of the boundary, and more moist air
with northerly flow to the north. Expect minimum RH in the 25 to 30%
range with occasional wind gusts to 25 MPH. This boundary will push well
to the south tonight, leading to good to excellent RH recovery by Wednesday
morning. Expect southeast winds occasionally gusting to 25 MPH on Wednesday
with a chance for thunderstorms in the afternoon.
.REST OF TODAY...
Sky/weather.........Sunny (5-15 percent).
CWR.................1 percent.
LAL.................1.
Max temperature.....87 to 89 degrees.
Min humidity........25 to 30 percent.
Wind (20 ft)........Northwest winds 10 to 15 mph shifting to the
north around 15 mph late in the afternoon. Occasional
gusts to 25 MPH possible.
Mixing height.......6800 ft AGL.
Transport winds.....North 9 to 17 mph shifting to the northwest 13
to 15 mph late in the afternoon.
Smoke dispersal.....Poor (15900 knot-ft) early in the morning
increasing to good (87300 knot-ft) in the
afternoon.
Haines Index........3 to 4 or very low to low potential for large
plume dominated fire growth.
TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........11 14 16 12 8 4 3 4 5 5 6
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0
LAL.............1 1 1 1 1 1 1 1 1 1 1
Temp............65 69 73 75 78 80 82 84 86 85 85
RH..............60 55 48 46 42 39 37 32 30 31 31
20 FT wind dir..NW NW NW NW NW NW NW N N N N
20 FT wind spd..9 9 9 9 9 10 12 13 14 15 15
20 FT wind gust.14 15 15 15 16 16 18 21 22 23 23
Mix hgt (kft)...1.4 1.8 2.0 2.0 2.0 2.3 3.2 4.5 5.5 6.4 6.8
Transp wind dir.N N N N N NW NW NW NW NW NW
Transp wind spd.17 14 10 9 9 9 12 13 14 15 15
Haines index....3 3 3 3 3 4 4 4 4 4 4
SDspl kt-ft/100021 21 19 17 16 19 31 49 68 82 87
.TONIGHT...
Sky/weather.........Mostly clear (10-20 percent).
CWR.................2 percent.
LAL.................1.
Min temperature.....58 to 60 degrees.
Max humidity........73 to 77 percent.
Wind (20 ft)........Northeast winds 10 to 15 mph shifting to the
east 5 to 10 mph late in the evening.
Mixing height.......500 ft AGL.
Transport winds.....North 14 to 15 mph shifting to the east 8 to 17
mph early in the evening, then shifting to the
northeast around 20 mph early in the morning.
Smoke dispersal.....Good (81300 knot-ft) early in the evening
decreasing to poor (3300 knot-ft) late in the
night.
Haines Index........3 or very low potential for large plume
dominated fire growth.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........7 4 4 11 6 10 11 14 17 14 21 26
Weather cov.....
Weather type....
Tstm cov........
CWR.............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............84 80 76 72 70 69 67 65 64 63 61 60
RH..............33 41 52 61 68 70 73 75 75 75 75 72
20 FT wind dir..NE NE E E E E E E E E E E
20 FT wind spd..14 14 12 10 8 6 6 6 7 8 8 9
20 FT wind gust.23 21 18 16 14 10 9 9 12 13 14 15
Mix hgt (kft)...6.5 4.9 2.8 1.1 0.5 0.5 0.6 0.6 0.7 0.8 0.8 0.9
Transp wind dir.NW N E E E E E E NE NE NE NE
Transp wind spd.15 14 13 12 10 8 8 9 13 15 17 20
Haines index....3 3 3 3 3 3 3 3 3 3 3 3
SDspl kt-ft/100081 59 32 11 4 3 4 5 8 11 13 15
.WEDNESDAY...
Sky/weather.........Mostly sunny (30-40 percent). Chance of rain
showers in the afternoon. Chance of
thunderstorms late in the afternoon.
CWR.................7 percent.
LAL.................1 until 1500, then 3.
Max temperature.....83 to 85 degrees.
Min humidity........35 to 39 percent.
Wind (20 ft)........Southeast winds 10 to 15 mph. Gusty and erratic
winds expected near thunderstorms late in the
afternoon. Occasional gusts to 25 MPH possible.
Mixing height.......5600 ft AGL.
Transport winds.....East 13 to 21 mph shifting to the southeast 10
to 15 mph in the afternoon.
Smoke dispersal.....Poor (17500 knot-ft) early in the morning
increasing to good (67900 knot-ft) 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 (%).........34 36 29 27 30 21 21 25 30 36 43 49
Weather cov..... CHC CHC CHC CHC CHC CHC
Weather type.... RW RW RW RW RW RW
Tstm cov........ CHC CHC CHC
CWR.............0 0 0 0 0 0 10 10 10 10 10 10
LAL.............1 1 1 1 1 1 1 1 1 3 3 3
Temp............59 61 63 65 69 72 76 78 81 83 81 80
RH..............75 70 70 68 59 53 46 42 38 37 41 44
20 FT wind dir..E E E E E SE SE SE SE SE SE SE
20 FT wind spd..9 9 9 10 10 12 12 13 14 15 15 15
20 FT wind gust.15 15 16 16 17 17 18 21 22 23 24 24
Mix hgt (kft)...1.0 1.2 1.5 1.9 2.4 3.0 3.7 4.5 5.3 5.6 5.3 4.5
Transp wind dir.NE NE E E E E E SE SE SE SE SE
Transp wind spd.21 21 21 18 16 13 10 10 13 14 15 15
Haines index....3 3 3 3 3 3 3 3 3 3 3 3
SDspl kt-ft/100018 22 26 31 33 33 33 42 56 68 68 60
$$
Forecaster...Natoli
Requested by...Mat Karges
Type of request...WILDFIRE
.TAG 2416669.0/CYS
.DELDT 06/25/24
.FormatterVersion 2.0.0
.EMAIL sdgpc@firenet.gov