264
FNUS71 KLWX 142258
FWSLWX

Spot Forecast for Army 250th...DOI
National Weather Service Baltimore MD/Washington DC
658 PM EDT Sat Jun 14 2025

Forecast is based on forecast start time of 1900 EDT on June 14.
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 slowly move off to the west through tonight.
This boundary has become the focus for shower and
thunderstorm development, especially south and west of the Potomac
River late this afternoon into early this evening. The heaviest
thunderstorms are most likely to stay off to the west, but
showers are likely with a possible thunderstorm, with the best
chance for a thunderstorm between 8 PM and 11 PM this evening.
Any thunderstorms will produce lightning along with the
threat for flooding. Gusty winds are also possible.

Visibility will most likely 3 to 5 miles through this evening in
haze due to smoke from wildfires upstream.

Ceilings will lower later this evening as low clouds develop in the
easterly flow, most likely after 10 PM this evening.

Visibility and ceilings will be locally lower in any thunderstorms
that develop.


.REST OF TONIGHT...

Sky/weather.........Mostly cloudy (80-90 percent). Showers and
                    scattered thunderstorms in the evening, then
                    chance of showers and slight chance of
                    thunderstorms overnight.
Chance of pcpn......80 percent.
Chance of thunder...62 percent.
Min temperature.....Around 66.
Max humidity........100 percent.
Heat index..........MISSING.
Surface winds (mph).East winds 5 to 6 mph.

TIME (EDT)      7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........78  88  90  90  91  86  90  90  92  91  92
Weather cov.....SCT SCT NUM NUM NUM CHC CHC SCH SCH SCH SCH
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........    ISO SCT SCT SCT SCH SCH
Chc of pcpn (%).30  50  80  70  60  40  30  20  20  20  20
Chc of thdr (%).60  50  40  30  20  20  20  10  10  10  10
Temp............77  74  72  71  70  71  70  69  68  67  67
RH..............82  87  93  93  97  90  97  97  97  97  100
Heat index (F)..M   M   M   M   M   M   M   M   M   M   M
Surface wnd dir.E   E   NE  E   E   E   E   NE  NE  NE  E
Surface wnd spd.5   6   5   6   6   6   6   5   5   5   5
Surface wnd gst.7   9   10  10  10  10  10  8   8   9   9

$$
Forecaster...LaSorsa
Requested by...Lia McDOnald
Type of request...OTHER
.TAG 2515982.0/LWX
.DELDT 06/14/25
.FormatterVersion 2.0.0
.EMAIL lia_mcdonald@Ios.doi.gov