Spot Forecast Issued by NWS Cheyenne, WY
000
FNUS75 KCYS 182028
FWSCYS
Spot Forecast for Rifle Site RX...Gering Fire Department
National Weather Service Cheyenne WY
228 PM MDT Mon Mar 18 2024
If conditions become unrepresentative, contact the National Weather
Service at (307) 772-2227
.DISCUSSION...
Quiet weather conditions expected on Wednesday as winds switch
from the east to southeast, and finally south by 1700. Wind gusts
of 10-12mph between 1200-1700. Smoke dispersal will transition to
good by the afternoon of Wednesday. Minimum humidity values will
decrease to near 30 percent on Wednesday. Good overnight humidity
recovery expected. Winds will be more gusty on Thursday, as peak
wind gusts of 30-35mph from the west will be present by 1200.
Humidity values will decrease to near 20 percent by 1500 Thursday,
causing elevated fire weather concerns due to possible rapid fire
spread conditions being favored. Wednesday would be better day to
consider for prescribed burn operations despite higher humidities.
.WEDNESDAY...
Sky/weather.........Sunny (5-15 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....Around 61-63.
Min humidity........30-33 percent.
Wind (20 ft)........South to Southeast winds 9 to 10 mph.
Mixing height.......9600 ft AGL.
Transport winds.....North 7 to 8 mph shifting to the west 7 to 9
mph late in the afternoon.
Smoke dispersal.....Poor (9600 knot-ft) early in the morning
increasing to good (72600 knot-ft) in the
afternoon.
Haines Index........2 to 3 or very low potential for large plume
dominated fire growth.
TIME (MDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........13 14 15 13 10 8 10 12
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0
LAL.............1 1 1 1 1 1 1 1
Temp............43 47 51 54 57 60 60 61
RH..............57 51 44 40 37 33 33 31
20 FT wind dir..E SE SE SE S S S S
20 FT wind spd..9 9 10 9 9 9 9 9
20 FT wind gust.10 10 12 10 10 10 10 10
Mix hgt (kft)...1.4 2.0 3.0 4.7 6.6 8.2 9.1 9.6
Transp wind dir.NE N NW NW W W W W
Transp wind spd.8 7 6 7 7 7 8 9
Haines index....2 2 3 3 3 3 3 3
SDspl kt-ft/100010 12 17 26 39 52 64 73
.WEDNESDAY NIGHT...
Sky/weather.........Mostly clear (5-15 percent).
CWR.................1 percent.
LAL.................1.
Min temperature.....Around 36-38.
Max humidity........60-65 percent.
Wind (20 ft)........South winds 9 to 10 mph shifting to the
southwest around 9 mph after 3 am.
Mixing height.......800 ft AGL.
Transport winds.....West 7 to 9 mph shifting to the southwest 12 to
17 mph overnight.
Smoke dispersal.....Good (73300 knot-ft) early in the evening
decreasing to poor (9800 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 (%).........14 16 17 18 15 12 8 7 6 5 6 8
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............61 58 54 51 49 48 46 44 42 40 40 40
RH..............31 34 40 44 48 49 53 55 60 62 59 59
20 FT wind dir..S S S S S S S S SW SW SW SW
20 FT wind spd..9 9 9 9 9 10 10 9 9 9 9 9
20 FT wind gust.10 10 10 10 12 12 12 10 10 10 12 13
Mix hgt (kft)...9.4 8.5 7.0 5.4 3.9 2.5 1.5 1.0 0.9 0.9 0.8 0.8
Transp wind dir.W W W W W SW SW SW SW SW SW W
Transp wind spd.9 8 7 7 8 9 12 12 13 14 15 17
Haines index....3 3 3 3 3 3 3 3 3 3 3 3
SDspl kt-ft/100073 61 45 33 27 21 15 11 10 11 11 12
.THURSDAY...
Sky/weather.........Mostly sunny (25-35 percent).
CWR.................3 percent.
LAL.................1.
Max temperature.....Around 66-68.
Min humidity........20-23 percent.
Wind (20 ft)........Breezy. West winds 9 to 18 mph increasing to
northwest 22 to 28 mph with gusts to around 36
mph late in the morning.
Mixing height.......10300 ft AGL increasing to 11600 ft AGL late in
the afternoon.
Transport winds.....West 20 to 26 mph increasing to 30 to 38 mph in
the late morning and afternoon.
Smoke dispersal.....Poor (14900 knot-ft) early in the morning
increasing to very good (104100 knot-ft) in the
afternoon increasing to excellent (309600
knot-ft).
Haines Index........2 to 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 (%).........10 11 12 13 18 22 27 33 38 44 49 53
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............39 43 46 50 55 59 63 65 66 66 65 64
RH..............61 55 48 44 37 32 27 25 23 23 23 25
20 FT wind dir..W W W W W W W W W W NW NW
20 FT wind spd..9 10 14 16 18 22 24 26 28 28 28 26
20 FT wind gust.10 14 21 23 26 30 32 35 35 36 36 33
Mix hgt (kft)...0.9 0.8 0.8 1.6 3.8 6.6 9.0 10 11 12 12 12
Transp wind dir.W W W W W W W W W W W W
Transp wind spd.20 23 26 30 31 32 32 35 36 38 38 38
Haines index....2 2 2 2 2 2 3 3 3 3 3 3
SDspl kt-ft/100016 15 19 42 104 183 256 310 350 373 382 376
$$
Forecaster...Wills
Requested by...Kelsey Brady
Type of request...PRESCRIBED
.TAG 2407359.0/CYS
.DELDT 03/18/24
.FormatterVersion 2.0.0
.EMAIL firedept@gering.org