Spot Forecast
Issued by NWS Jackson, KY

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000
FNUS73 KJKL 280952
FWSJKL

Spot Forecast for Cow Horn RX...USFS
National Weather Service Jackson KY
552 AM EDT Thu Mar 28 2024

Forecast is based on ignition time of 0800 EDT on March 28.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office if you have questions
or concerns with this forecast.

.DISCUSSION...Drier air aloft will mix down this afternoon and
Friday afternoon, allowing for minimum relative humidity values
in the 20 to 25 percent range during peak heating. North winds
will gust to around 14 mph this afternoon. These winds will
back to the northwest later in the day. Dry weather
can be expected through the end of the work week, as high
pressure passes by to our south. Rain chances return this
weekend and early next week, along with above normal temperatures.

.TODAY...

Sky/weather.........Sunny (10-20 percent). Patchy frost early in
                    the morning.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Around 58.
Min humidity........24 percent.
Dewpoint............29 decreasing to 25 in the afternoon.
Min apparent temp...29.
Wind (20 ft)........Light north winds increasing to 5 to 7 mph, with
                    gusts up to 14 mph in the afternoon. The winds will
                    become northwest late in the day.
Ridgetop wind.......North 5 to 9 mph, with gusts up to 14 mph in the
                    afternoon. The winds will become northwest late
                    in the day.
Mixing height.......5700 ft AGL.
Transport winds.....North 5 to 14 mph shifting to the northwest 14
                    to 15 mph late in the afternoon.
Vent Rate...........Poor (600 knot-ft) increasing to good (64500
                    knot-ft).
LVORI...............4.
ADI.................2 early in the morning increasing to 93 in the
                    afternoon.
Haines Index........3 to 5 or very low to moderate potential for
                    large plume dominated fire growth.

TIME (EDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........27  23  17  12  7   3   1   0   1   2
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0
LAL.............1   1   1   1   1   1   1   1   1   1
Temp............32  36  41  44  49  53  54  58  58  58
Dewpoint........31  31  30  27  25  26  26  24  25  25
RH..............96  82  65  51  39  35  34  27  28  28
Aparnt tmp (F)..29  32  38  41  46  53  54  58  58  58
20 FT wind dir..N   N   N   N   N   N   N   N   NW  NW
20 FT wind spd..3   5   5   6   7   8   8   8   8   8
20 FT wind gust.7   8   10  12  13  13  13  14  14  14
Ridge wind dir..N   N   N   N   N   N   N   N   NW  NW
Ridge wind spd..5   6   6   7   8   9   9   9   9   9
Mix hgt (kft)...0.2 0.8 2.1 2.7 3.2 4.2 4.7 5.0 5.5 5.7
Transp wind dir.N   N   N   N   N   N   N   N   NW  NW
Transp wind spd.5   7   9   12  13  14  14  15  15  14
LVORI...........7   4   3   1   1   1   1   1   1   1
ADI.............5   8   24  39  50  69  76  86  93  89
Haines index....5   5   4   4   4   4   4   4   3   3
Vrate kt-ft/1K..1   5   17  27  35  50  57  65  71  69
Ventrate Cat....PR  PR  PR  PR  PR  FR  FR  GD  GD  GD

.TONIGHT...

Sky/weather.........Clear (0-10 percent).
Chance of pcpn......0 percent.
LAL.................1.
Min temperature.....Around 33.
Max humidity........85 percent.
Dewpoint............25 increasing to 29 in the late evening and
                    overnight.
Min apparent temp...29.
Wind (20 ft)........Northwest winds 5 to 6 mph early in the evening
                    becoming light.
Ridgetop wind.......Northwest 6 to 8 mph shifting to the southwest
                    5 to 6 mph in the late evening and overnight.
Mixing height.......100 ft AGL.
Transport winds.....Northwest 5 to 12 mph shifting to the southwest
                    3 to 6 mph in the late evening and overnight.
Vent Rate...........Fair (44400 knot-ft) decreasing to poor (400
                    knot-ft).
LVORI...............4.
ADI.................60 early in the evening decreasing to 2 late in
                    the night.
Haines Index........3 to 5 or very low to moderate potential for
                    large plume dominated fire growth.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........2      3      4      4      5      3
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Chc of pcpn (%).0      0      0      0      0      0
LAL.............1      1      1      1      1      1
Temp............58     51     44     40     36     33
Dewpoint........23     26     28     28     28     29
RH..............26     37     53     62     72     85
Aparnt tmp (F)..58     51     41     38     32     29
20 ft wind......NW 7   NW 6   W 5    SW 3   SW 5   SW 5
20 ft wind gust.13     9      7      7      8      9
Ridgetop wind...NW 8   NW 7   W 6    SW 5   SW 6   SW 6
Mix hgt (ft)....4400   500    200    100    100    100
Transport wind..NW 12  W 6    W 3    W 3    SW 5   SW 6
LVORI...........1      2      2      3      3      5
ADI.............60     3      2      2      2      3
Haines index....3      3      4      4      5      5
Vrate kt-ft/1K..44     3      1      0      1      1
Ventrate Cat....FAIR   POOR   POOR   POOR   POOR   POOR

.FRIDAY...

Sky/weather.........Sunny (5-15 percent). Patchy frost early in the
                    morning.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Around 70.
Min humidity........22 percent.
Dewpoint............32 increasing to 33 late in the morning, then
                    decreasing to 29 late in the afternoon.
Min apparent temp...30.
Wind (20 ft)........Light winds becoming west 6 to 8 mph with gusts
                    to around 20 mph in the late morning and
                    afternoon.
Ridgetop wind.......Southwest around 5 mph, becoming west at 7 to 10
                    mph, with gusts to around 20 mph in the late
                    morning and afternoon.
Mixing height.......5800 ft AGL.
Transport winds.....Southwest 6 to 13 mph increasing to west 16 to
                    23 mph in the late morning and afternoon.
Vent Rate...........Poor (600 knot-ft) increasing to good
                    (79600 knot-ft) in the afternoon.
LVORI...............4.
ADI.................3 early in the morning increasing to 119 in the
                    afternoon.
Haines Index........4 to 5 or low to moderate potential for large
                    plume dominated fire growth.

TIME (EDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........2         2         3         8
Weather cov.....PATCHY
Weather type....FROST     NONE      NONE      NONE
Tstm cov........
Chc of pcpn (%).0         0         0         0
LAL.............1         1         1         1
Temp............33        39        58        69
Dewpoint........30        32        35        31
RH..............89        76        42        24
Aparnt tmp (F)..30        36        58        69
20 FT wind......SW 3G9    SW 5G12   W 8G16    W 8G20
Ridgetop wind...SW 5      SW 6      W 9       W 9
Mix hgt (ft)....100       800       3400      5600
Transport wind..SW 6      SW 13     W 23      W 18
LVORI...........6         4         1         1
ADI.............3         13        96        117
Haines index....5         5         4         5
Vrate kt-ft/1K..1         8         68        90
Ventrate Cat....POOR      POOR      GOOD      GOOD

$$
Forecaster...GEOGERIAN
Requested by...Michael Tapley
Type of request...PRESCRIBED
.TAG 2408599.0/JKL
.DELDT 03/27/24
.FormatterVersion 2.0.0
.EMAIL michael.tapley@usda.gov


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