494
FNUS71 KLWX 061422
FWSLWX

Spot Forecast for USPP Special Event...Department of the Interior
National Weather Service Baltimore MD/Washington DC
922 AM EST Mon Jan 6 2025

Forecast is based on forecast start time of 1000 EST on January 06.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...

A potent low pressure system looks to cross the region later today
bringing a continued threat of accumulating snow through late evening.
Moderate to heavy snow mixing with sleet will continue over the next 2
hours across the event location. The precipitation will gradually
lighten later this morning into mid-afternoon. Before the lull
in precipitation arrives expect continued visibility reductions
of less than 2 miles. Visibility values will improve somewhat
with intermittent light sleet and snow showers later this morning
into midday. Air temperatures will hold steady in the upper 20s
through the afternoon.

Additional snow is likely later this afternoon into this evening
as low pressure crosses the region. The next period of light to
moderate snow looks to move back over the event locations between
4pm to 11pm. Snowfall rates of up to 0.5 inch per hour are possible
with additional snow accumulations of 1 to 3 inches. This is on top of
the current 5 to 6 inch amounts over the event location and surrounding
area as of 9am this morning.

Precipitation will come to an end after midnight with low temperatures
falling down around 20 degrees. Winds will increase late tonight into Tuesday
in the wake of the departing low pressure system. Expected gusts between
20 to 25 mph during this time.

Cold and dry conditions are expected Tuesday with highs around freezing.
Winds will remain on the gusty side of things out of the north and northwest
with gusts up to 30 mph. Some blowing snow is possible in open areas due to
the gusty winds. Cold temperatures and breezy conditions will persists through
midweek.

Another system may impact the region late Friday into Saturday.

.REST OF TODAY...

Sky/weather.........Cloudy (95-100 percent shading). Snow decrease in intensity later
                    this morning into early afternoon, then snow likely
                    late in the afternoon after 4pm to 5pm.
Max temperature.....Around 29.
Min humidity........85 percent.
Surface winds (mph).Northeast winds 7 to 8 mph shifting to the
                    north around 8 mph late in the afternoon.

TIME (EST)      10 AM  NOON   2 PM   4 PM
Sky (%).........100    100    100    100
Weather cov.....DEFNTE DEFNTE DEFNTE LIKELY
Weather type....SNOW   SNOW   SNOW   SNOW
Tstm cov........
Temp............28     28     28     28
RH..............96     95     91     91
Surface wind....E 7    NE 8   NE 8   NE 8
Surface wnd gst.14     15     16     16

.TONIGHT...

Sky/weather.........Mostly cloudy (75-85 percent shading) then becoming
                    partly cloudy (35-45 percent shading). Snow likely
                    early in the evening, then chance of snow late in
                    the evening through 11pm. Additional snow accumulations
                    of 1 to 3 inches are possible.
Min temperature.....Around 20.
Max humidity........92 percent.
Surface winds (mph).North winds 8 to 13 mph shifting to the
                    northwest after 3 am.

TIME (EST)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........100    100    98     82     45     33
Weather cov.....LIKELY DEFNTE CHANCE CHANCE
Weather type....SNOW   SNOW   SNOW   SNOW   NONE   NONE
Tstm cov........
Temp............29     29     28     25     24     21
RH..............90     90     85     84     73     76
Surface wind....N 8    N 9    N 12   N 10   NW 12  NW 13
Surface wnd gst.16     20     23     21     18     20

.TUESDAY...

Sky/weather.........Mostly sunny (20-30 percent shading).
Max temperature.....Around 32.
Min humidity........66 percent.
Surface winds (mph).Northwest winds 13 to 17 mph.

TIME (EST)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........36     30     16     21     24     20
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............21     21     27     31     31     31
RH..............72     79     69     64     65     65
Surface wind....NW 13  NW 14  NW 16  NW 16  NW 16  NW 15
Surface wnd gst.20     21     25     25     24     22

$$
Forecaster...Taylor
Requested by...Michael Rega
Type of request...OTHER
.TAG 2500077.0/LWX
.DELDT 01/06/25
.FormatterVersion 2.0.0
.EMAIL doi_watch_office@ios.doi.gov