TTCM () > WeatherTuesday, March 19, 202476% W2 W3 W4 W538°F
Washington, D.C., WeatherSunrise: 7:12 (W1: 56%); Solar Noon: 1:15 (W3: 58%); Sunset: 7:19 (W5: 60%)

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Last 72 Hours: ObservationsCurrently: 38°F  — USNO Clear Sky ChartHeavens-Above

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...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR MARCH 18 2024...

WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
TEMPERATURE (F)
 TODAY
  MAXIMUM         53   3:21 PM  81    1989  57     -4       54
  MINIMUM         44   7:59 AM  13    1877  39      5       41
                                      1900
  AVERAGE         49                        48      1       48

PRECIPITATION (IN)
  TODAY            0.00          1.00 1983   0.12  -0.12      T
  MONTH TO DATE    2.41                      2.00   0.41     0.65
  SINCE MAR 1      2.41                      2.00   0.41     0.65
  SINCE JAN 1      9.70                      7.48   2.22     4.38

Daily Climate Report
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Fire Weather Watch
Special Weather Statement
Hazardous Weather Outlook

Today: Increasing clouds, with a high near 55°. West wind 7 to 13 mph, with gusts as high as 22 mph.

Tonight: Partly cloudy, with a low around 40°. Southwest wind around 7 mph.

Wednesday: Mostly sunny, with a high near 63°. Southwest wind 8 to 17 mph, with gusts as high as 26 mph.

Wednesday Night: Mostly clear, with a low around 33°. Northwest wind 11 to 16 mph, with gusts as high as 24 mph.

Thursday: Sunny, with a high near 50°. Northwest wind 9 to 15 mph, with gusts as high as 23 mph.

Thursday Night: Mostly clear, with a low around 31°.

Friday: Partly sunny, with a high near 51°.

Friday Night: Rain likely. Mostly cloudy, with a low around 42°. Chance of precipitation is 60%.

Saturday: A chance of rain. Mostly cloudy, with a high near 56°. Chance of precipitation is 50%.

Saturday Night: Mostly cloudy, with a low around 33°. Breezy.

Sunday: Mostly sunny, with a high near 51°.

Sunday Night: Partly cloudy, with a low around 35°.

Monday: Mostly sunny, with a high near 55°.

Baltimore/Washington Forecast Office

Latest Forecast

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Continental U.S. (CONUS) Surface Analysis




Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
401 AM EDT Tue Mar 19 2024

.SYNOPSIS...

Gusty winds and low relative humidity values look to continue
through Thursday as a result of strong low pressure over eastern
Canada and broad high pressure building south from the northern
Plains region. A cold front will push through the area late tonight
into Wednesday bringing another round of accumulating upslope
mountain snow showers to the Alleghenies. More widespread
precipitation chances hold off until Friday and the start of the
weekend as an area of low pressure pushes north from the Gulf Coast
region.


.NEAR TERM /THROUGH TONIGHT/...
Outside of some lingering mountain upslope snow showers over the
Alleghenies this morning expect another dry and breezy day ahead.
Deep low pressure will remained locked up over eastern Canada with
broad high pressure along the Gulf Coast and an even stronger high
pressure system building south from central Canada. This will lead
to a continuation of gusty west to west-southwest flow across the
region and low relative humidity values leading to increased fire
weather concerns (see Fire Weather discussion below). Highs today
will push into the upper 40s and low to mid 50s. Expect some mid-
level cloudiness especially later this afternoon and evening as
longwave troughing and an approaching cold front over the Ohio River
Valley advance toward the region.

Skies will clear back out overnight east of the Alleghenies with
westerly downslope flow. Areas along and west of the Alleghenies
will likely see continued cloudiness and another shot of
accumulating upslope mountain snow showers. An additional 1-2 inches
of snow is possible at elevations above 2500 feet. Lows will drop
into the mid to upper 30s and low 40s with values closer to freezing
over the mountains. Winds will also begin to increase with longwave
trough positioned nearby and the next incumbent shortwave
trough/front set to approach from the west Wednesday. With that
said, expect sustained west-west southwest winds gusting between 20-
25 mph east of the Blue Ridge and 25-35 mph gusts further west this
afternoon. Gusts of 40-50 mph remain possible along the eastern
slopes of the Alleghenies especially later this evening and into
Wednesday morning. This is especially tries across western MIneral,
western Allegany, western Grant, Pendleton, and Highland counties
where a fairly persistent signal for advisory criteria winds
continues to show up. Higher confidence for wind advisory criteria
appears to be toward Wednesday morning and afternoon. With that
said, have decided to hold off on wind headlines at this time.


.SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/...
A reinforcing cold front and shortwave trough cross the area
Wednesday. The front will bring limited moisture in the form of
mountain upslope snow showers over the Allegheny Front and passing
clouds further east. The bigger story will be the winds with 850 mb
winds running 40-50 kts ahead of the boundary Wednesday morning and
it`s wake Wednesday afternoon. Sustained west to northwest gusts as
a result, will run between 20-30 mph east of the Blue Ridge with 30-
40 mph gusts further west. 40-50 mph gusts are likely especially
along the eastern slopes of the Alleghenies. Will need to monitor
the potential for wind headlines mainly over the mountains given the
consistent signal amongst the deterministic/ensemble guidance. These
strong winds could result in isolated downed trees and power lines.

With downsloping flow ahead and in the immediate wake of the
boundary expect slightly warmer temperatures Wednesday. Highs will
climb into the upper 50s and low 60s. The mild air combined with
gusty winds and lowering relative humidity/fuel moistures will lead
to additional fire weather concerns. A Fire Weather Watch remains in
effect from Wednesday morning into Wednesday evening for much of the
forecast area outside of western MD and north-central MD.

High pressure will build eastward from the Great Lakes region to
southern New England Thursday and Thursday night. Highs will be
cooler than average with temperatures in the lower to middle 40s
with some lower 50s in eastern Virginia. Low relative humidity
values will remain although winds will gradually decrease throughout
the day as the gradient relaxes. Lows Thursday night will fall into
the mid to upper 20s (low 20s mountains).


.LONG TERM /FRIDAY THROUGH MONDAY/...

Cutoff low pressure lifting from the Gulf to the Mid-Atlantic
later this week will spread rain across the area Fri night into
Saturday. Low pressure begins to pull out Sat night with rain
ending. Sfc ridging sets up over the first half of the week
keeping fair weather. Another system may impact the area next
Tue bringing the next chance of showers.


Latest Discussion

Climate — Genesis 8:22
While the earth remains, seedtime and harvest, cold and heat, winter and summer, and day and night shall not cease.

Sea Level — Job 38:8-11
Who shut in the sea with doors, when it burst forth and issued from the womb; when I made the clouds its garment, and thick darkness its swaddling band; when I fixed My limit for it, and set bars and doors; when I said, ‘This far you may come, but no farther, and here your proud waves must stop!’


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