999
FNUS71 KLWX 191659
FWSLWX

Spot Forecast for 202500001771...Shenandoah National Park
National Weather Service Baltimore MD/Washington DC
1259 PM EDT Sat Jul 19 2025

Forecast is based on forecast start time of 1300 EDT on July 19.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...
Along Skyline Drive, daytime heating over the terrain has led to
increasing cumulus development. Expect these to continue to grow
in height over the next couple of hours which will yield scattered
showers and thunderstorms. Looking west of I-81, a cluster of
storms are already underway, mainly along the Pendleton/Rockingham
county borders. While not severe in nature, these particular
storms are producing frequent cloud-to-ground lightning, and
bringing some very heavy downpours. Any of these storms will
increase the flash flood risk, especially for any cells that are
slower moving. As these showers push eastward in time, some of
these may impact this section of Skyline Drive within the next
couple of hours. A Flood Watch remains in effect until 10 PM
across this area given the potential for additional rounds of
thunderstorms.

On the temperature and humidity side, conditions remain humid
amidst a persistent tropical air mass. With temperatures rising
into the upper 70s, heat indices will push into the mid 80s this
afternoon. Winds remain light outside of any thunderstorms.


.REST OF TODAY...

Sky/weather.........Mostly cloudy (70-80 percent). Scattered
                    showers and thunderstorms early in the
                    afternoon, then numerous showers and
                    thunderstorms late in the afternoon.
Chance of pcpn......60 percent.
Chance of thunder...60 percent.
Max temperature.....Around 77.
Min humidity........76 percent.
Surface winds (mph).Light winds becoming west around 5 mph late in
                    the afternoon, then becoming light late in the
                    afternoon.

TIME (EDT)      1PM 2PM 3PM 4PM 5PM
Sky (%).........70  84  84  81  76
Weather cov.....SCT NUM NUM NUM NUM
Weather type....RW  RW  RW  RW  RW
Tstm cov........SCT NUM NUM NUM NUM
Chc of pcpn (%).40  60  60  60  60
Chc of thdr (%).30  60  60  60  60
Temp............72  74  77  75  75
RH..............87  84  79  84  82
Surface wnd dir.S   S   SW  W   SW
Surface wnd spd.3   3   3   5   3
Surface wnd gst.8   9   9   9   10

$$
Forecaster...Rubin-Oster
Requested by...J. Britt
Type of request...SAR
.TAG 2518263.0/LWX
.DELDT 07/19/25
.FormatterVersion 2.0.0
.EMAIL shen_communication@nps.gov