906
FNUS71 KLWX 261019
FWSLWX

Spot Forecast for SHEN HQ Pile Rx...National Park Service
National Weather Service Baltimore MD/Washington DC
619 AM EDT Fri Sep 26 2025

Forecast is based on ignition time of 0700 EDT on September 26.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...

A cold front will stall southeast of the area this weekend. This
will lead to continued shower and thunderstorm chances, mainly tonight
through Saturday. High pressure over eastern Canada builds south early
next week while a tropical system lifts northward across the western
Atlantic. A strong cold front tracks across the area by the middle
of next week which will bring cooler and drier weather.

.REST OF TODAY...

Sky/weather.........Partly sunny (55-65 percent). Patchy fog early
                    in the morning. Slight chance of showers late
                    in the afternoon.
CWR.................10 percent.
Chance of thunder...10 percent.
Temperature.........61 at ignition...Max 79.
RH..................100 percent at ignition...Min 67 percent.
Wind (20 ft)........Winds south at 1 mph at ignition...otherwise
                    Light winds.
Mixing height.......600 ft AGL at ignition...otherwise 4100 ft AGL.
Transport winds.....North around 5 mph.
Smoke dispersal.....Poor /2500 knot-ft/ at ignition. Max...fair
                    /16400 knot-ft/.

TIME (EDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........51  75  66  48  41  54  57  59  66  62  51
Weather cov.....PTY                                 SCH
Weather type....FOG                                 RW
Tstm cov........
CWR.............10  10  10  10  10  10  10  10  10  20  10
Chc of thdr (%).0   0   0   0   10  10  10  10  10  10  10
Temp............61  62  64  67  70  72  74  76  77  76  75
RH..............100 97  100 93  84  79  74  69  67  69  71
20 FT wind dir..S   N   W   NW  NW  NW  NW  NW  N   N   N
20 FT wind spd..1   1   1   1   1   1   1   1   1   1   1
20 FT wind gust.5   5   5   5   6   5   5   5   5   6   7
Mix hgt (kft)...0.6 0.6 1.1 1.8 2.7 3.5 4.1 4.1 3.8 3.8 3.3
Transp wind dir.N   N   N   N   N   NW  NW  NW  NW  N   NE
Transp wind spd.5   5   5   5   5   5   5   5   5   5   5
Vrate kt-ft/1K..3   3   4   7   11  14  16  16  15  15  13
Ventrate Cat....PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.TONIGHT...

Sky/weather.........Mostly cloudy (70-80 percent). Chance of
                    showers early in the morning.
CWR.................10 percent increasing to 30 percent early in
                    the morning.
Chance of thunder...8 percent.
Temperature.........Min 61.
RH..................Max 100 percent.
Wind (20 ft)........Light winds.
Mixing height.......600 ft AGL.
Transport winds.....East 5 to 6 mph.
Smoke dispersal.....Poor (2400 knot-ft).

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........60     69     76     71     92     91
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............10     10     10     10     0      10
Chc of thdr (%).10     0      0      0      0      0
Temp............74     68     66     64     63     63
RH..............76     93     97     100    100    100
20 ft wind......NE 1   NE 1   NE 1   E 1    E 1    NE 1
20 ft wind gust.6      6      5      3      5      5
Mix hgt (ft)....1400   600    600    600    600    600
Transport wind..NE 5   NE 5   E 5    E 6    E 5    E 6
Vrate kt-ft/1K..6      3      3      3      2      3
Ventrate Cat....POOR   POOR   POOR   POOR   POOR   POOR

.SATURDAY...

Sky/weather.........Cloudy (90-100 percent). Chance of showers
                    early in the morning, then showers likely early
                    in the morning. Slight chance of thunderstorms
                    late in the afternoon.
CWR.................30 percent increasing to 70 percent.
Chance of thunder...17 percent.
Temperature.........Max 70.
RH..................Min 90 percent.
Wind (20 ft)........Light winds. Gusty and erratic winds expected
                    near thunderstorms late in the afternoon.
Mixing height.......1600 ft AGL.
Transport winds.....East 6 to 9 mph.
Smoke dispersal.....Poor (3000 knot-ft).

TIME (EDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........95        94        90        92
Weather cov.....CHANCE    LIKELY    LIKELY    LIKELY
Weather type....RNSHWR    RNSHWR    RNSHWR    RNSHWR
Tstm cov........                              S CHC
CWR.............30        60        60        70
Chc of thdr (%).10        10        10        20
Temp............62        64        67        68
RH..............100       100       93        90
20 FT wind......E 1G5     E 1G6     E 2G7     E 2G7
Mix hgt (ft)....600       900       1400      1500
Transport wind..E 6       E 7       E 8       E 8
Vrate kt-ft/1K..3         5         10        10
Ventrate Cat....POOR      POOR      POOR      POOR

$$
Forecaster...Rosa
Requested by...Lane Gibbons
Type of request...PRESCRIBED
.TAG 2522430.2/LWX
.DELDT 09/26/25
.FormatterVersion 2.0.0
.EMAIL lane_gibbons@nps.gov