Spot Forecast
Issued by NWS Cheyenne, WY
Issued by NWS Cheyenne, WY
659
FNUS75 KCYS 221641
FWSCYS
Spot Forecast for Springer Lake Ditch 2.0...Yoder Fire Department
National Weather Service Cheyenne WY
1041 AM MDT Wed May 22 2024
If conditions become unrepresentative, contact the National Weather
Service at (307) 772-2227
.DISCUSSION...
Weather is expected to be dry through the afternoon, but we cannot
ruled out a quick shower near 1800. Winds will remain out of the
southwest until after sunset when a turn to the south-southeast is
expected. Overall winds will remain 10-15 mph with occasional wind
gusts 20-25 mph. A strong cold front is forecast to move through
tomorrow which will produce strong winds and rain showers with
thunderstorms.
.REST OF TODAY...
Sky/weather.........Mostly sunny (30-40 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....Around 71.
Min humidity........19 percent.
Wind (20 ft)........Southwest winds 9 to 12 mph.
Mixing height.......14100 ft AGL.
Transport winds.....Southwest 13 to 18 mph.
Smoke dispersal.....Good (81500 knot-ft) early in the morning
increasing to very good (143100 knot-ft) in the
afternoon increasing to excellent (186700
knot-ft) late in the afternoon.
Haines Index........2 to 3 or very low potential for large plume
dominated fire growth.
TIME (MDT) 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........12 17 25 33 41 51 61
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0
LAL.............1 1 1 1 1 1 1
Temp............61 65 67 69 69 70 71
RH..............30 24 22 20 20 19 19
20 FT wind dir..W W W SW SW SW SW
20 FT wind spd..9 9 10 10 12 12 10
20 FT wind gust.15 15 12 12 12
Mix hgt (kft)...7.3 8.8 9.7 10 11 13 14
Transp wind dir.W W W SW SW SW SW
Transp wind spd.13 14 14 15 15 17 18
Haines index....2 3 3 3 3 3 3
SDspl kt-ft/100082 106 119 129 143 187 232
.TONIGHT...
Sky/weather.........Mostly cloudy (55-65 percent) then becoming
partly cloudy (20-30 percent).
CWR.................1 percent.
LAL.................1.
Min temperature.....Around 43.
Max humidity........70 percent.
Wind (20 ft)........Southwest winds 9 to 10 mph shifting to the
south 6 to 7 mph early in the evening.
Mixing height.......5500 ft AGL decreasing to 200 ft AGL in the
late evening and overnight.
Transport winds.....South 12 to 21 mph decreasing to 10 to 12 mph
after 3 am.
Smoke dispersal.....Excellent (177500 knot-ft) decreasing to good
(88300 knot-ft) early in the evening decreasing
to poor (2100 knot-ft) late in the night early
in the evening.
Haines Index........4 to 5 or low to moderate potential for large
plume dominated fire growth.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........72 61 51 41 34 27 20 19 18 17 15 13
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............69 67 63 57 54 52 50 48 47 45 44 43
RH..............21 25 30 38 43 48 52 54 56 62 65 67
20 FT wind dir..W SW S SE SE S S S S S S S
20 FT wind spd..10 9 7 6 6 6 7 7 7 7 6 6
20 FT wind gust. 8 8 8 8 8 8 8 8 7
Mix hgt (kft)...14 10 5.5 1.4 0.3 0.4 0.8 0.7 0.5 0.5 0.3 0.2
Transp wind dir.SW SW S S S S S S S S S S
Transp wind spd.21 20 18 17 17 16 16 14 13 12 10 12
Haines index....4 4 4 4 4 4 5 5 5 5 5 5
SDspl kt-ft/1000245 178 88 21 4 5 11 8 6 4 3 2
.THURSDAY...
Sky/weather.........Sunny (20-30 percent) then becoming partly
sunny (50-60 percent).
CWR.................2 percent.
LAL.................1.
Max temperature.....Around 69.
Min humidity........24 percent.
Wind (20 ft)........Breezy. Southwest winds 8 to 17 mph increasing
to west 21 to 28 mph with gusts to around 43
mph in the late morning and afternoon.
Mixing height.......7200 ft AGL increasing to 15700 ft AGL late in
the morning, then decreasing to 5700 ft AGL
late in the afternoon.
Transport winds.....Southwest 13 to 20 mph increasing to 23 to 24
mph in the late morning and early afternoon,
then shifting to the west 26 to 35 mph late in
the afternoon increasing to around 39 mph late
in the afternoon.
Smoke dispersal.....Poor (4000 knot-ft) early in the morning
increasing to fair (49000 knot-ft) in the
afternoon increasing to very good (148600
knot-ft) late in the morning, then increasing
to excellent (223900 knot-ft) late in the
morning decreasing to very good (124800
knot-ft) late in the afternoon.
Haines Index........3 to 5 or very low to moderate potential for
large plume dominated fire growth.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........11 9 7 5 9 12 16 28 40 53 53 54
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............41 46 53 58 63 66 67 67 68 68 66 64
RH..............70 60 48 42 35 30 28 27 26 25 26 27
20 FT wind dir..S SW SW W W W W W NW NW NW NW
20 FT wind spd..8 12 17 21 22 22 22 24 26 28 26 24
20 FT wind gust. 23 29 30 30 32 36 39 43 43 41
Mix hgt (kft)...0.4 0.3 0.7 2.4 7.2 13 16 14 9.7 5.7 4.2 3.7
Transp wind dir.S SW SW SW SW SW SW SW W NW W W
Transp wind spd.13 16 20 23 23 23 23 24 26 30 35 39
Haines index....5 5 5 5 5 5 3 3 3 3 3 3
SDspl kt-ft/10004 4 13 49 149 253 319 294 224 147 125 125
$$
Forecaster...Kubelka-Gross
Requested by...Trevor Pulver
Type of request...PRESCRIBED
.TAG 2414917.0/CYS
.DELDT 05/22/24
.FormatterVersion 2.0.0
.EMAIL pulver@yoderfire.org