Severe Thunderstorm Warning 1, NWS Baltimore/Washington

791 
WWUS51 KLWX 281956
SVSLWX

Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
356 PM EDT Sun Mar 28 2021

MDC021-043-WVC003-037-065-282030-
/O.CON.KLWX.SV.W.0001.000000T0000Z-210328T2030Z/
Washington MD-Frederick MD-Jefferson WV-Morgan WV-Berkeley WV-
356 PM EDT Sun Mar 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR WASHINGTON AND FREDERICK COUNTIES IN NORTH CENTRAL MARYLAND...
CENTRAL JEFFERSON...EASTERN MORGAN AND BERKELEY COUNTIES IN THE
PANHANDLE OF WEST VIRGINIA...

At 356 PM EDT, severe thunderstorms were located along a line
extending from 10 miles east of Berkeley Springs to 6 miles west of
Martinsburg to near Greenwood, moving east at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Damaging winds will cause some trees and large branches to 
         fall. This could injure those outdoors, as well as damage 
         homes and vehicles. Roadways may become blocked by downed 
         trees. Localized power outages are possible. Unsecured 
         light objects may become projectiles.

Locations impacted include...
Frederick, Hagerstown, Martinsburg, Thurmont, Charles Town,
Emmitsburg, Shepherdstown, Municipal Stadium, Harry Grove Stadium,
Greenwood, Ballenger Creek, Robinwood, Brunswick, Walkersville,
Fountainhead-Orchard Hills, Ranson, Boonsboro, Smithsburg, Inwood and
Braddock Heights.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

&&

LAT...LON 3972 7722 3963 7728 3964 7731 3962 7731
      3960 7727 3938 7731 3931 7766 3932 7772
      3930 7774 3927 7788 3934 7815 3944 7831
      3967 7809 3972 7778
TIME...MOT...LOC 1956Z 269DEG 42KT 3959 7804 3948 7809 3937 7821 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

DHOF

615 
WWUS51 KLWX 282009
SVSLWX

Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
409 PM EDT Sun Mar 28 2021

WVC065-282019-
/O.CAN.KLWX.SV.W.0001.000000T0000Z-210328T2030Z/
Morgan WV-
409 PM EDT Sun Mar 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MORGAN COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3972 7722 3963 7728 3964 7731 3962 7731
      3960 7727 3938 7731 3931 7765 3932 7772
      3930 7774 3927 7788 3934 7815 3937 7820
      3969 7799 3972 7778
TIME...MOT...LOC 2009Z 267DEG 39KT 3966 7784 3950 7792 3939 7804 

$$

MDC021-043-WVC003-037-282030-
/O.CON.KLWX.SV.W.0001.000000T0000Z-210328T2030Z/
Washington MD-Frederick MD-Jefferson WV-Berkeley WV-
409 PM EDT Sun Mar 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR WASHINGTON AND FREDERICK COUNTIES IN NORTH CENTRAL MARYLAND...
CENTRAL JEFFERSON AND BERKELEY COUNTIES IN THE PANHANDLE OF WEST
VIRGINIA...

At 409 PM EDT, severe thunderstorms were located along a line
extending from Wilson-Conococheague to near Martinsburg to near
Inwood, moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Damaging winds will cause some trees and large branches to 
         fall. This could injure those outdoors, as well as damage 
         homes and vehicles. Roadways may become blocked by downed 
         trees. Localized power outages are possible. Unsecured 
         light objects may become projectiles.

Locations impacted include...
Frederick, Hagerstown, Martinsburg, Thurmont, Charles Town,
Emmitsburg, Shepherdstown, Municipal Stadium, Harry Grove Stadium,
Ballenger Creek, Robinwood, Brunswick, Walkersville,
Fountainhead-Orchard Hills, Ranson, Boonsboro, Smithsburg, Inwood,
Braddock Heights and Paramount-Long Meadow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

&&

LAT...LON 3972 7722 3963 7728 3964 7731 3962 7731
      3960 7727 3938 7731 3931 7765 3932 7772
      3930 7774 3927 7788 3934 7815 3937 7820
      3969 7799 3972 7778
TIME...MOT...LOC 2009Z 267DEG 39KT 3966 7784 3950 7792 3939 7804 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

DHOF

327 
WWUS51 KLWX 282024
SVSLWX

Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
424 PM EDT Sun Mar 28 2021

WVC003-282034-
/O.CAN.KLWX.SV.W.0001.000000T0000Z-210328T2030Z/
Berkeley WV-
424 PM EDT Sun Mar 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR BERKELEY COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3972 7722 3963 7728 3964 7731 3962 7731
      3960 7727 3938 7731 3931 7765 3932 7767
      3932 7772 3930 7774 3927 7788 3930 7801
      3937 7797 3945 7785 3953 7783 3953 7784
      3952 7784 3952 7787 3953 7787 3972 7773
TIME...MOT...LOC 2024Z 270DEG 50KT 3969 7759 3953 7767 3942 7779 

$$

MDC021-043-WVC037-282030-
/O.CON.KLWX.SV.W.0001.000000T0000Z-210328T2030Z/
Washington MD-Frederick MD-Jefferson WV-
424 PM EDT Sun Mar 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR WASHINGTON...FREDERICK COUNTIES IN NORTH CENTRAL MARYLAND AND
CENTRAL JEFFERSON COUNTIES IN THE PANHANDLE OF WEST VIRGINIA...

At 424 PM EDT, severe thunderstorms were located along a line
extending from near Smithsburg to San Mar to Shepherdstown, moving
east at 60 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Damaging winds will cause some trees and large branches to 
         fall. This could injure those outdoors, as well as damage 
         homes and vehicles. Roadways may become blocked by downed 
         trees. Localized power outages are possible. Unsecured 
         light objects may become projectiles.

Locations impacted include...
Frederick, Hagerstown, Thurmont, Charles Town, Emmitsburg,
Shepherdstown, Municipal Stadium, Harry Grove Stadium, Ballenger
Creek, Robinwood, Brunswick, Walkersville, Fountainhead-Orchard
Hills, Ranson, Boonsboro, Smithsburg, Braddock Heights,
Paramount-Long Meadow, Williamsport and Mount Aetna.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3972 7722 3963 7728 3964 7731 3962 7731
      3960 7727 3938 7731 3931 7765 3932 7767
      3932 7772 3930 7774 3927 7788 3930 7801
      3937 7797 3945 7785 3953 7783 3953 7784
      3952 7784 3952 7787 3953 7787 3972 7773
TIME...MOT...LOC 2024Z 270DEG 50KT 3969 7759 3953 7767 3942 7779 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

DHOF

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
243 PM EDT Sun Mar 28 2021

.SYNOPSIS...

A strong cold front will pass through the area late this
afternoon and early this evening. Severe thunderstorms are
possible ahead of the cold front. High pressure will return
Monday before moving offshore Tuesday. Low pressure and its
associated cold front will likely impact the area Wednesday
before surface high and an upper-level trough build overhead for
late in the week.

&&

.NEAR TERM /THROUGH TONIGHT/...

Still a wait and see situation on whether will have deep
convection develop ahead of a strong cold front now crossing the
Appalachian Mountains. Latest satellite imagery shows holes in
the cloud cover in northern VA and central MD, but significant
convective inhibition still remains given presence of stable
wave clouds. A recently arrived Suomi-NPP 1735Z NUCAPS sounding
near Fredericksburg confirms this with about 101 J/kg of CINH.
NUCAPS soundings from a NOAA-20 pass around 1827Z will give a
better idea on potential convective evolution next several
hours. Regardless, looks like we'll see a shallow narrow
rainband accompany the front late this afternoon (21Z- 23Z) with
gusty winds with the strongest winds in the post- frontal
environment (around 20Z in the mtns, 21Z- 23Z Rt 15 corridor)
and exiting the bay after 23Z. Looks like freq gusts 35-40 kt
will be common through this evening, before winds begin to
gradually abate after midnight.

&&

.SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/...

Cooler and breezy Monday under building high pressure. Cold at
night under clear skies and very dry air mass. Next system will
bring showers to the area late Tue night through the day
Wednesday.

&&

.LONG TERM /WEDNESDAY THROUGH SUNDAY/...

A strengthening upper-level shortwave will approach from the west
during the day on Wednesday, driving a strong cold front towards the
region. Very warm and moist air will stream into the region ahead of
this front in southerly flow. Expect showers and clouds for much of
the day as this front approaches. Then, low pressure looks to
develop along the front somewhere in the Mid-Atlantic region. This
could lead to some heavier elements nearby, especially amid 1.5"+
PWATs. This could perhaps lead to some flooding issues, particularly
in our southern zones. Thanks to the southerly flow ahead of the
cold front, expect highs to be well into the 60s, even amid all of
the clouds and showers.

The front will rapidly drop temperatures Wednesday night into the
30s and low 40s. Over the higher elevations, do expect to see a
changeover to snow Wednesday night, with some minor accumulations
possible.

Strong Arctic high pressure mvoes towards the region slowly
on Thursday and Friday while the upper trough also slowly moves
across the region. This will lead to 2 very chilly days, with highs
well below average (only reaching the mid 40s).

&&

.AVIATION /18Z SUNDAY THROUGH FRIDAY/...

A broken line of showers will accompany a strong cold front in
the 21Z-23Z time frame with gusty west winds. Strongest gusts
will occur in the post-frontal environment with freq gusts
35-40kt through this evening, then gradually diminishing
overnight through Monday.

Sub-VFR conditions expected on Wednesday as a strong cold front
brings showers to the region. Gusty winds ahead of the front out of
the southwest will turn gustier and out of the west Wednesday night
into Thursday. However, VFR conditions are expected to return during
that time and continue for the next several days afterward.

&&

.MARINE...

Gale conditions are expected behind a frontal passage early
this evening and Small Craft conditions through tomorrow.

Small Craft Advisories are possible on Wednesday before
becoming likely on Wednesday night and Thursday as a strong cold
front pushes through the region. Winds could even potentially
approach Gale Force Wednesday night and especially Thursday.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...Wind Advisory from 8 PM this evening to 4 AM EDT Monday for
     DCZ001.
MD...Wind Advisory from 8 PM this evening to 4 AM EDT Monday for
     MDZ005-006-008-011-013-014-503>508.
     Wind Advisory until 4 AM EDT Monday for MDZ001-003-004-501-502.
VA...Wind Advisory until 4 AM EDT Monday for VAZ507-508.
     Wind Advisory from 8 PM this evening to 4 AM EDT Monday for
     VAZ052>054-506.
     Wind Advisory until 4 AM EDT Monday for VAZ025>031-040-501-
     503>505.
WV...Wind Advisory until 4 AM EDT Monday for WVZ050>053-055-501>506.
MARINE...Gale Warning until 6 AM EDT Monday for ANZ530>543.

&&

SYNOPSIS...LFR
NEAR TERM...LFR
SHORT TERM...LFR
LONG TERM...CJL
AVIATION...LFR/CJL
MARINE...LFR/CJL

Hazardous Weather Outlook
National Weather Service Baltimore MD/Washington DC
1004 AM EDT Sun Mar 28 2021

ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508-
VAZ052>057-291000-
Chesapeake Bay north of Pooles Island MD-
Chesapeake Bay from Pooles Island to Sandy Point MD-
Chesapeake Bay from Sandy Point to North Beach MD-
Chesapeake Bay from North Beach to Drum Point MD-
Chesapeake Bay from Drum Point MD to Smith Point VA-
Tidal Potomac from Key Bridge to Indian Head MD-
Tidal Potomac from Indian Head to Cobb Island MD-
Tidal Potomac from Cobb Island MD to Smith Point VA-
Patapsco River including Baltimore Harbor-
Chester River to Queenstown MD-Eastern Bay-
Choptank River to Cambridge MD and the Little Choptank River-
Patuxent River to Broomes Island MD-
Tangier Sound and the inland waters surrounding Bloodsworth
Island-District of Columbia-Cecil-Southern Baltimore-
Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-
Central and Southeast Montgomery-Central and Southeast Howard-
Southeast Harford-Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-
King George-
1004 AM EDT Sun Mar 28 2021

This Hazardous Weather Outlook is for the Maryland portion of the
Chesapeake Bay, Tidal Potomac River, and I-95 corridor through
central Maryland, northern Virginia, and District of Columbia.

.DAY ONE...Today and Tonight

Isolated severe thunderstorms with damaging winds are possible
this afternoon and early evening. An isolated tornado is also
possible.

A Gale Warning is in effect for the waters today and tonight.

A Wind Advisory is in effect for the Washington and Baltimore
Metropolitan areas as well as northeastern Maryland tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon and evening.

MDZ003>006-503-505-507-VAZ025>031-036>040-050-051-501-502-505>508-
WVZ050>053-055-291000-
Washington-Frederick MD-Carroll-Northern Baltimore-
Northwest Montgomery-Northwest Howard-Northwest Harford-Augusta-
Rockingham-Shenandoah-Frederick VA-Page-Warren-Clarke-Nelson-
Albemarle-Greene-Madison-Rappahannock-Orange-Culpeper-
Northern Fauquier-Southern Fauquier-Western Loudoun-
Eastern Loudoun-Northern Virginia Blue Ridge-
Central Virginia Blue Ridge-Hampshire-Morgan-Berkeley-Jefferson-
Hardy-
1004 AM EDT Sun Mar 28 2021

This Hazardous Weather Outlook is for portions of eastern West
Virginia, northern and central Virginia, and central and western
Maryland.

.DAY ONE...Today and Tonight

Isolated severe thunderstorms with damaging winds are possible
this afternoon. An isolated tornado is also possible.

A Wind Advisory is in effect for the Blue Ridge Mountains today,
and for all along and west of the Blue Ridge Mountains as well as
northern and central Maryland and northern Virginia tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon.

MDZ001-501-502-VAZ503-504-WVZ501>506-291000-
Garrett-Extreme Western Allegany-Central and Eastern Allegany-
Western Highland-Eastern Highland-Western Grant-Eastern Grant-
Western Mineral-Eastern Mineral-Western Pendleton-
Eastern Pendleton-
1004 AM EDT Sun Mar 28 2021

This Hazardous Weather Outlook is for the Allegheny Front
counties in western Maryland, eastern West Virginia, and Highland
County Virginia.

.DAY ONE...Today and Tonight

A Wind Advisory is in effect for the outlook area from 2 PM this
afternoon until 4 AM Monday.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed Sunday afternoon.