451
FNUS73 KLMK 180812
FWSLMK

Spot Forecast for Knapp Rx...The Nature Conservancy
National Weather Service Louisville KY
412 AM EDT Fri Apr 18 2025

Forecast is based on ignition time of 1100 EDT on April 18.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Unseasonably warm and windy today with gusty south winds and deep
mixing. Precip chances ramp up tonight with rain becoming more
widespread after midnight. A few thunderstorms are also possible
late tonight into Saturday. Additional showers and storms are
expected late Sunday, and will bring rain totals to near 1 inch
for the weekend.

.REST OF TODAY...

Sky/weather.........Mostly sunny (45-55 percent).
Temperature.........71 at ignition...Max 79.
RH..................57 percent at ignition...Min 49 percent.
Wind (20 ft)........Winds southwest at 11 mph at
                    ignition...otherwise Southwest winds around 12
                    mph with gusts to around 22 mph.
Mixing height.......2500 ft AGL at ignition...max 4100 ft AGL.
Transport winds.....Southwest 30 to 33 mph.
Smoke dispersal.....Good /66200 knot-ft/ at ignition.
                    Max...excellent /117500 knot-ft/.
LVORI...............1.
ADI.................87 to 125.

TIME (EDT)      11 AM  1 PM   3 PM   5 PM
Sky (%).........47     48     48     47
Weather cov.....
Weather type....NONE   NONE   NONE   NONE
Tstm cov........
Temp............71     76     76     78
RH..............57     50     50     48
20 ft wind......SW 11  SW 12  SW 13  S 15
20 ft wind gust.22     22     21     22
Mix hgt (ft)....2500   3300   3900   3900
Transport wind..SW 30  SW 30  SW 32  SW 33
LVORI...........1      1      1      1
ADI.............87     101    118    122
SDspl kt-ft/100066     85     108    112

.TONIGHT...

Sky/weather.........Partly cloudy (45-55 percent) then becoming
                    mostly cloudy (65-75 percent). Slight chance of
                    showers and thunderstorms in the evening, then
                    showers likely and chance of thunderstorms
                    overnight.
Temperature.........Min 63.
RH..................Max 89 percent.
Wind (20 ft)........Southwest winds 8 to 12 mph. Gusts up to 33 mph
                    decreasing to 22 mph early in the evening.
                    Gusty and erratic winds expected near
                    thunderstorms.
Mixing height.......400 ft AGL.
Transport winds.....Southwest 21 to 30 mph decreasing to 20 to 22
                    mph in the late evening and overnight.
Smoke dispersal.....Good (75200 knot-ft) early in the evening
                    decreasing to poor (6200 knot-ft) late in the
                    night.
LVORI...............2.
ADI.................94 early in the evening decreasing to 18 late
                    in the night.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........48     51     66     84     82     81
Weather cov.....       S CHC  S CHC  S CHC  LIKELY LIKELY
Weather type....NONE   RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
Tstm cov........                     S CHC  S CHC  S CHC
Temp............76     74     70     69     69     66
RH..............50     57     66     68     68     76
20 ft wind......S 13   SW 6   SW 6   S 6    SW 6   SW 6
20 ft wind gust.23     15     15     15     15     14
Mix hgt (ft)....2900   600    400    600    600    700
Transport wind..SW 30  SW 21  SW 20  SW 21  SW 22  SW 21
LVORI...........1      2      2      2      3      3
ADI.............94     19     18     19     20     19
SDspl kt-ft/100075     11     7      11     12     13

.SATURDAY...

Sky/weather.........Mostly cloudy (75-85 percent). Showers likely
                    and chance of thunderstorms.
Temperature.........Max 74.
RH..................Min 69 percent.
Wind (20 ft)........Southwest winds 5 to 8 mph. Gusty and erratic
                    winds expected near thunderstorms.
Mixing height.......2700 ft AGL.
Transport winds.....Southwest 14 to 20 mph.
Smoke dispersal.....Poor (10300 knot-ft) early in the morning
                    increasing to marginal (33300 knot-ft) in the
                    afternoon.
LVORI...............4.
ADI.................13 to 46.

TIME (EDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........81     82     80     80     83     83
Weather cov.....LIKELY LIKELY LIKELY LIKELY LIKELY LIKELY
Weather type....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
Tstm cov........CHANCE S CHC  S CHC  S CHC  CHANCE CHANCE
Temp............64     63     68     70     70     70
RH..............85     87     78     78     78     78
20 ft wind......SW 5   SW 4   SW 5   SW 5   SW 5   SW 4
20 ft wind gust.13     11     12     12     12     11
Mix hgt (ft)....700    800    1300   2000   2600   2600
Transport wind..SW 18  SW 17  W 20   W 18   SW 14  SW 14
LVORI...........4      5      4      3      3      3
ADI.............16     13     33     46     41     40
SDspl kt-ft/100011     11     22     33     31     31

$$
Forecaster...RAS
Requested by...Jesse Moore
Type of request...PRESCRIBED
.TAG 2510935.0/LMK
.DELDT 04/18/25
.FormatterVersion 2.0.0
.EMAIL jesse_moore@tnc.org