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Martinsburg, West Virginia 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Martinsburg WV
National Weather Service Forecast for: Martinsburg WV
Issued by: National Weather Service Baltimore, MD/Washington, D.C.
Updated: 2:54 pm EST Nov 21, 2024
 
This
Afternoon
This Afternoon: Scattered showers, mainly before 4pm.  Mostly cloudy, with a high near 48. West wind around 7 mph.  Chance of precipitation is 30%.
Scattered
Showers

Tonight

Tonight: A slight chance of rain showers, mixing with snow after 8pm, then gradually ending.  Mostly cloudy, then gradually becoming mostly clear, with a low around 33. West wind 8 to 11 mph, with gusts as high as 22 mph.  Chance of precipitation is 20%.
Isolated
Rain/Snow
then Partly
Cloudy
Friday

Friday: Rain likely, possibly mixed with snow showers, becoming all rain after noon.  Cloudy, with a high near 43. West wind 13 to 16 mph, with gusts as high as 30 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.
Rain/Snow
Likely then
Showers
Likely
Friday
Night
Friday Night: Scattered showers, mainly before 10pm.  Mostly cloudy, with a low around 38. Northwest wind 10 to 15 mph, with gusts as high as 29 mph.  Chance of precipitation is 30%.
Scattered
Showers

Saturday

Saturday: Partly sunny, with a high near 53. Northwest wind 10 to 16 mph, with gusts as high as 30 mph.
Partly Sunny

Saturday
Night
Saturday Night: Mostly cloudy, with a low around 39.
Mostly Cloudy

Sunday

Sunday: Mostly sunny, with a high near 55.
Mostly Sunny

Sunday
Night
Sunday Night: Partly cloudy, with a low around 33.
Partly Cloudy

Monday

Monday: Partly sunny, with a high near 59.
Partly Sunny

Hi 48 °F Lo 33 °F Hi 43 °F Lo 38 °F Hi 53 °F Lo 39 °F Hi 55 °F Lo 33 °F Hi 59 °F

 

This Afternoon
 
Scattered showers, mainly before 4pm. Mostly cloudy, with a high near 48. West wind around 7 mph. Chance of precipitation is 30%.
Tonight
 
A slight chance of rain showers, mixing with snow after 8pm, then gradually ending. Mostly cloudy, then gradually becoming mostly clear, with a low around 33. West wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Friday
 
Rain likely, possibly mixed with snow showers, becoming all rain after noon. Cloudy, with a high near 43. West wind 13 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Friday Night
 
Scattered showers, mainly before 10pm. Mostly cloudy, with a low around 38. Northwest wind 10 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.
Saturday
 
Partly sunny, with a high near 53. Northwest wind 10 to 16 mph, with gusts as high as 30 mph.
Saturday Night
 
Mostly cloudy, with a low around 39.
Sunday
 
Mostly sunny, with a high near 55.
Sunday Night
 
Partly cloudy, with a low around 33.
Monday
 
Partly sunny, with a high near 59.
Monday Night
 
A chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 50%.
Tuesday
 
Mostly sunny, with a high near 55.
Tuesday Night
 
Partly cloudy, with a low around 34.
Wednesday
 
Partly sunny, with a high near 47.
Wednesday Night
 
A chance of showers. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Thanksgiving Day
 
A chance of showers. Partly sunny, with a high near 45.

 

Forecast from NOAA-NWS for Martinsburg WV.

Weather Forecast Discussion
924
FXUS61 KLWX 212003
AFDLWX

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
303 PM EST Thu Nov 21 2024

.SYNOPSIS...
Low pressure will loop counterclockwise over the northern Mid-
Atlantic through Friday night, then depart toward New England and
the Canadian Maritimes this weekend. High pressure will briefly
build across the area late in the weekend, then another frontal
system will likely approach early next week.

&&

.NEAR TERM /UNTIL 6 AM FRIDAY MORNING/...
Upper-level low pressure was moving from OH into PA as of mid
afternoon. Surface low pressure was deepening en route for Long
Island NY.

Rain showers, mixed with a little graupel at times north of
I-66/US-50, were pivoting west to east while weakening as a
patch of drier air aloft moves in east of the mountains.

Snow showers/squalls along and west of the Allegheny Front will
continue through the night, though there will likely be a lull
during the overnight and pre-dawn hours. Snowfall totals will
be between 2 and 4 inches with locally higher amounts on the
western facing slopes above 2500 feet. Winter Storm Warnings
remain in effect across the Allegheny Front, with Winter
Weather Advisories for western Mineral/extreme western Allegany.
Overnight lows will be in the 20s west of the Blue Ridge with
30s further east.

&&

.SHORT TERM /6 AM FRIDAY MORNING THROUGH SATURDAY NIGHT/...
Winter Storm Warnings continue for the western slopes of the
Alleghenies through Friday night.

Upper-level low pressure will rotate counterclockwise just to
the north of the area Friday morning before drifting toward the
New England coast late Friday into Saturday. Multiple pieces of
shortwave energy will pivot around the upper-level low Friday
morning into Friday afternoon and again Friday night into
Saturday. Each piece of shortwave energy will supply a
reinforcing shot of wind, cold temperatures, and enhanced
upslope mountain snow.

The steadiest and heaviest upslope mountain snow shower activity
looks to occur late Friday morning through Friday evening. This
is when the strongest piece of shortwave energy pivots through
as the cutoff upper low progresses north and east toward New
England. Latest deterministic and ensemble guidance continues
to hint at snowfall rates of 1-2"/hr with persistent
banding/squalls working over the warning areas.

Storm total snow of 6-12 inches with localized amounts of 1 to 2
feet along western facing slopes above 2500 feet are expected
along and west of the Allegheny Front, with 3 to 6 inches for
elevations above 1500 feet just east of the Alleghenies in
western MD down into western Mineral County WV.

Outside of the significant snow accumulation, blowing and
drifting will become a problem. This is due largely in part to
increasing winds Friday afternoon into Saturday as the shortwave
disturbance lifts out of the region. Gusts will be close to
Wind Advisory criteria (up to 50 mph) along the higher ridges
with 30 to 40 mph gusts down below. This will yield wind chills
in the teens and 20s on both Friday and Saturday across the
higher elevations.

Areas further east will likely experience a band of rain/snow
showers, especially near/east of I-81 and near/north of
I-66/US-50. Across the Catoctins and perhaps Parr`s Ridge over
north-central MD, a few inches of snow is possible Friday as the
deformation axis wrapping around the low pivots overhead.

Snow shower activity will begin to decrease Saturday morning into
Saturday midday as the shortwave trough kicks east and the upper
level low exits off coastal New England. A period of freezing
rain or drizzle is possible Friday night into Saturday morning
along the higher elevations of the Allegheny Front as deeper
moisture vacates halting ice crystal formation. By Saturday
afternoon, the shortwave will pivot east and heights begin to
rise. This will result in pretty rapid drying out across the
mountains into the afternoon/evening. Elsewhere, Saturday
remains dry with gusty northwesterly winds of around 25 to 35
mph, with gusts up to 40 mph, mainly on the ridges and over the
open waters.

High temperatures will range from below freezing over the mountains
to mid to upper 40s and low 50s further east Friday. Lows Friday
night into Saturday morning will fall into the 30s and 40s. By
Saturday, temperatures warm back above freezing in the mountains
with upper 40s and low to mid 50s further east toward the metros.

&&

.LONG TERM /SUNDAY THROUGH THURSDAY/...
Sunday into Monday look to remain mostly dry as high pressure
returns to the region. Sunday will see highs around the mid 50s,
then increasing to around the low 60s on Monday.

Meanwhile, low pressure over the central U.S. will track north
and east into the Great Lakes late Monday into Tuesday. This may
bring some showers to the region during this time along with a
cool down into Wednesday as high pressure builds to our north.
High temperatures on Tuesday reach the mid to upper 50s, while
highs drop into the 40s by Wednesday.

&&

.AVIATION /18Z THURSDAY THROUGH TUESDAY/...
Prevailing VFR conditions are expected at most terminals through
Saturday. Some brief periods of MVFR are possible, especially Friday
into Friday night as a potent piece of upper-level energy pivots
through. A few mixed rain/snow/graupel showers may be possible
at times, but the vast majority of the time should remain dry.
Friday brings a slightly higher chance of precipitation for the
terminals north of KCHO.

Wind will likely be the biggest impact to aviation today
through Saturday. Expect sustained speeds of 10-20 kts during
the day and nighttime hours with gusts 20-30 kts each
afternoon/evening. Highest winds look to occur late Friday into
early Saturday.

Gusty W/NW winds around 15 to 20 kts will be the main threat to
the terminals on Sunday. VFR conditions are expected. Winds on
Monday will taper off and turn southerly around 6 to 12 kts. VFR
conditions will continue.

&&

.MARINE...
High end SCAs are likely to continue through Saturday night
with frequent gusts of 20 to 30 kts expected across all waters.
Gale-force gusts are possible over the open waters of the
Chesapeake Bay and lower tidal Potomac River late Friday into
early Saturday as winds surge behind a departing shortwave
trough.

Gusty winds out of the W/NW will continue into Sunday in the
wake of the frontal passage, with SCAs likely to continue for
much of the waters. Winds then turn out of the south on Monday
as high pressure moves quickly offshore. Winds may channel up
the Chesapeake Bay and result in continued SCAs over the wider
waters.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...Winter Storm Warning until midnight EST Friday night for
     MDZ001.
     Winter Weather Advisory until 10 PM EST this evening for
     MDZ501.
     Winter Weather Advisory from 6 AM to 6 PM EST Friday for
     MDZ501.
VA...Winter Storm Warning until 6 AM EST Saturday for VAZ503.
     Wind Advisory from noon Friday to 6 AM EST Saturday for VAZ503-
     504-507-508.
WV...Winter Weather Advisory until 10 PM EST this evening for
     WVZ503.
     Winter Weather Advisory from 6 AM to 6 PM EST Friday for
     WVZ503.
     Winter Storm Warning until 6 AM EST Saturday for WVZ501-505.
     Wind Advisory from noon Friday to 6 AM EST Saturday for WVZ505-
     506.
MARINE...Small Craft Advisory until 7 AM EST Saturday for ANZ530>532-
     535-536-538>540.
     Small Craft Advisory until 4 PM EST Friday for ANZ533-534-537-
     541>543.
     Gale Watch from Friday afternoon through Saturday morning for
     ANZ533-534-537-541>543.

&&

$$

SYNOPSIS...DHOF/ADM/EST
NEAR TERM...DHOF/ADM
SHORT TERM...DHOF/ADM/EST
LONG TERM...CJL
AVIATION...DHOF/CJL/ADM
MARINE...DHOF/CJL/ADM
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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