Severe Thunderstorm Watch
WATCH COUNTY NOTIFICATION FOR WATCH 455
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
428 PM EDT FRI AUG 18 2017
DCC001-MDC003-005-009-013-017-021-025-027-031-033-037-510-VAC013-
047-059-061-079-099-107-113-137-153-157-177-179-510-600-610-630-
683-685-190100-
/O.CON.KLWX.SV.A.0455.000000T0000Z-170819T0100Z/
SEVERE THUNDERSTORM WATCH 455 REMAINS VALID UNTIL 9 PM EDT THIS
EVENING FOR THE FOLLOWING AREAS
THE DISTRICT OF COLUMBIA
IN MARYLAND THIS WATCH INCLUDES 12 COUNTIES
IN CENTRAL MARYLAND
ANNE ARUNDEL HOWARD MONTGOMERY
PRINCE GEORGES
IN NORTH CENTRAL MARYLAND
CARROLL FREDERICK
IN NORTHERN MARYLAND
BALTIMORE BALTIMORE CITY HARFORD
IN SOUTHERN MARYLAND
CALVERT CHARLES ST. MARYS
IN VIRGINIA THIS WATCH INCLUDES 19 COUNTIES
IN CENTRAL VIRGINIA
CITY OF FREDERICKSBURG GREENE
KING GEORGE ORANGE SPOTSYLVANIA
IN NORTHERN VIRGINIA
ARLINGTON CITY OF ALEXANDRIA CITY OF FAIRFAX
CITY OF FALLS CHURCH CITY OF MANASSAS
CITY OF MANASSAS PARK CULPEPER
FAIRFAX FAUQUIER LOUDOUN
PRINCE WILLIAM STAFFORD
IN NORTHWEST VIRGINIA
MADISON RAPPAHANNOCK
THIS INCLUDES THE CITIES OF ABERDEEN, ALEXANDRIA, ANNAPOLIS,
ARLINGTON, ARNOLD, ASPEN HILL, BALLENGER CREEK, BALTIMORE,
BEL AIR, BETHESDA, BOWIE, CALIFORNIA, CAMP SPRINGS, CATONSVILLE,
CHANTILLY, CHESAPEAKE BEACH, CLINTON, COLLEGE PARK, COLUMBIA,
CULPEPER, DAHLGREN, DUNDALK, DUNKIRK, EDGEWOOD, ELDERSBURG,
ELLICOTT CITY, ESSEX, FAIRFAX, FALLS CHURCH, FALLSTON, FALMOUTH,
FREDERICK, FREDERICKSBURG, GAITHERSBURG, GERMANTOWN, GLEN BURNIE,
GORDONSVILLE, GREENBELT, HAVRE DE GRACE, HERNDON, HUNTINGTOWN,
JOPPATOWNE, LAUREL, LEESBURG, LEXINGTON PARK, LUSBY, MADISON,
MANASSAS, MANASSAS PARK, MCLEAN, NORTH BEACH, ODENTON, ORANGE,
PARKVILLE, PIKESVILLE, POTOMAC, PRINCE FREDERICK, RANDALLSTOWN,
RESTON, ROCKVILLE, SEVERN, SEVERNA PARK, SILVER SPRING,
SOUTH GATE, SPOTSYLVANIA COURTHOUSE, ST. CHARLES, STANARDSVILLE,
STERLING, SUITLAND-SILVER HILL, TOWSON, WALDORF, WARRENTON,
WASHINGTON, WASHINGTON, WESTMINSTER, AND WOODBRIDGE.
$$
Flash Flood Watch
Flood Watch
National Weather Service Baltimore MD/Washington DC
1235 PM EDT Fri Aug 18 2017
DCZ001-MDZ004>006-011-013-014-016>018-503>508-VAZ039-040-050>057-
501-502-505-506-190045-
/O.NEW.KLWX.FF.A.0008.170818T1800Z-170819T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
District of Columbia-Frederick MD-Carroll-Northern Baltimore-
Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-
Calvert-Northwest Montgomery-Central and Southeast Montgomery-
Northwest Howard-Central and Southeast Howard-Northwest Harford-
Southeast Harford-Madison-Rappahannock-Orange-Culpeper-
Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-
King George-Northern Fauquier-Southern Fauquier-Western Loudoun-
Eastern Loudoun-
Including the cities of Washington, Frederick, Ballenger Creek,
Eldersburg, Westminster, Reisterstown, Cockeysville, Baltimore,
Bowie, Suitland-Silver Hill, Clinton, College Park, Greenbelt,
Laurel, Camp Springs, Glen Burnie, Annapolis, Severn, South Gate,
Severna Park, Arnold, Odenton, St. Charles, Waldorf,
Lexington Park, California, Chesapeake Beach, Huntingtown,
Dunkirk, North Beach, Lusby, Prince Frederick, Germantown,
Damascus, Bethesda, Rockville, Gaithersburg, Silver Spring,
Lisbon, Columbia, Ellicott City, Jarrettsville, Aberdeen,
Madison, Orange, Gordonsville, Culpeper, Dale City, Manassas,
Woodbridge, Lake Ridge, Montclair, Reston, Herndon, Annandale,
Centreville, Chantilly, McLean, Franconia, Arlington, Alexandria,
Falmouth, Fredericksburg, Dahlgren, Warrenton, Turnbull,
Purcellville, Leesburg, Ashburn, and Sterling
1235 PM EDT Fri Aug 18 2017
...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...
The National Weather Service in Sterling Virginia has issued a
* Flash Flood Watch for portions of Maryland, The District of
Columbia, and Virginia, including the following areas, in
Maryland, Anne Arundel, Calvert, Carroll, Central and
Southeast Howard, Central and Southeast Montgomery, Charles,
Frederick MD, Northern Baltimore, Northwest Harford, Northwest
Howard, Northwest Montgomery, Prince Georges, Southeast
Harford, Southern Baltimore, and St. Marys. The District of
Columbia. In Virginia, Arlington/Falls Church/Alexandria,
Culpeper, Eastern Loudoun, Fairfax, King George, Madison,
Northern Fauquier, Orange, Prince William/Manassas/Manassas
Park, Rappahannock, Southern Fauquier, Spotsylvania, Stafford,
and Western Loudoun.
* Through late tonight
* Thunderstorms with heavy rainfall are expected across the region
this afternoon and evening. The potential for training
thunderstorms exists, which could result in several inches of
rain in one to two hours. Soils are already very moist, meaning
most of this rain would rapidly run off.
* Runoff from excessive rainfall may cause rapid rises of water
in low-lying and poor drainage areas as well as streams and
creeks, resulting in flash flooding. Urban areas will be most
susceptible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
RCM
Special Weather Statement
Special Weather Statement
National Weather Service BLACKSBURG VA
619 PM EDT FRI AUG 18 2017
VAZ059-182245-
Charlotte-
619 PM EDT FRI AUG 18 2017
...A STRONG THUNDERSTORM WILL AFFECT NORTHERN CHARLOTTE COUNTY
THROUGH 645 PM EDT...
At 619 PM EDT, a strong thunderstorm was located over Madisonville,
moving east at 25 mph.
Locations impacted include...
Keysville...
Charlotte Court House...
Phenix...
Red House...
and Drakes Branch.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
LAT...LON 3696 7848 3705 7886 3720 7882 3720 7880
3723 7878 3722 7873 3724 7872 3725 7869
3725 7868 3720 7869 3719 7868 3719 7864
3717 7864 3714 7859 3715 7855 3713 7851
3709 7848 3708 7844
TIME...MOT...LOC 2219Z 267DEG 20KT 3720 7871
$$
RAB
Special Weather Statement
National Weather Service Wakefield VA
601 PM EDT FRI AUG 18 2017
VAZ060-061-182245-
Cumberland-Prince Edward-
601 PM EDT FRI AUG 18 2017
...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN CUMBERLAND AND
CENTRAL PRINCE EDWARD COUNTIES...
At 600 PM EDT, a strong thunderstorm was located over Hampden Sydney,
moving east at 25 mph.
Wind gusts of around 30 mph are possible with this storm.
Locations impacted include...
Farmville, Hampden Sydney College, Longwood University, Hampden
Sydney, Prospect, Rice, Raines Tavern, Briery Creek Lake, Tuggle,
Prince Edward Station, Angola, Allens Mill, Burkes Tavern, Moran,
Kingsville, Reeds, Prince Edward Lake, Stoddert, Worsham and Twin
Lakes State Park.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike more than 10 miles away from a thunderstorm.
Seek a safe shelter inside a building or vehicle.
LAT...LON 3736 7858 3736 7856 3735 7855 3735 7854
3733 7851 3733 7849 3734 7849 3733 7847
3738 7843 3742 7820 3739 7822 3737 7824
3730 7823 3717 7824 3719 7860
TIME...MOT...LOC 2200Z 266DEG 22KT 3728 7847
$$
jo
Special Weather Statement
National Weather Service Raleigh NC
558 PM EDT FRI AUG 18 2017
NCZ021-182300-
Forsyth NC-
558 PM EDT FRI AUG 18 2017
...A STRONG THUNDERSTORM WILL AFFECT CENTRAL FORSYTH COUNTY UNTIL 700
PM EDT...
At 558 PM EDT, Doppler radar was tracking a strong thunderstorm near
Huntsville, or 9 miles north of Mocksville, moving east at 10 mph.
Wind gusts up to 40 mph will be possible with this storm.
Heavy rain and deadly cloud to ground lightning will also be
possible with this storm.
Locations impacted include...
Winston-Salem, Clemmons, Bermuda Run, Huntsville, Lewisville,
Walkertown, Pfafftown, Stanleyville and Sedge Garden.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter in a nearby building or vehicle. Wind gusts as high as
40 mph are capable of knocking down tree limbs and blowing around
trash cans, potted plants, lawn furniture and other light outdoor
objects.
Cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3611 8051 3612 8046 3614 8044 3615 8044
3622 8017 3603 8015 3603 8021 3600 8022
3600 8032 3597 8039 3599 8042 3601 8042
3603 8045 3606 8046 3606 8047 3604 8049
3605 8051 3609 8052
TIME...MOT...LOC 2158Z 262DEG 11KT 3603 8052
$$
77
Special Weather Statement
National Weather Service BLACKSBURG VA
556 PM EDT FRI AUG 18 2017
NCZ004-005-VAZ033-034-043-044-182230-
Stokes-Rockingham-Henry-Franklin-Bedford-Pittsylvania-
556 PM EDT FRI AUG 18 2017
...STRONG THUNDERSTORMS WILL AFFECT STOKES...WESTERN
ROCKINGHAM...PITTSYLVANIA...SOUTH CENTRAL BEDFORD... HENRY AND
SOUTHEASTERN FRANKLIN COUNTIES AND THE CITY OF MARTINSVILLE...
At 555 PM EDT, strong thunderstorms extended from near Leesville to
near Huntsville. Movement was east at 25 mph.
Winds in excess of 40 mph are possible with these storms...along
with very heavy rainfall.
Locations impacted include...
Eden...
Martinsville...
Wentworth...
Mayodan...
and Madison.
LAT...LON 3626 8043 3628 8045 3654 8015 3654 8005
3663 8005 3711 7949 3709 7942 3706 7944
3706 7940 3709 7940 3698 7913 3625 7991
TIME...MOT...LOC 2155Z 261DEG 24KT 3707 7946 3603 8053
$$
MBS
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
556 PM EDT FRI AUG 18 2017
NCZ037-182230-
Davie NC-
556 PM EDT FRI AUG 18 2017
...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN DAVIE COUNTY UNTIL
630 PM EDT...
At 555 PM EDT, Doppler radar was tracking a strong thunderstorm 8
miles north of Mocksville, or 4 miles south of Huntsville, moving
east at 15 mph.
Locations to be impacted include...
Mocksville, Bermuda Run, Advance, Farmington and Fork Church.
Wind gusts up to 40 mph will be possible in these areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Gusty winds can blow down trees that are dead, or that have weakened
root systems. Outdoor furniture and similar items can be tossed
around if not anchored. Seek shelter indoors.
&&
LAT...LON 3589 8040 3588 8042 3593 8062 3605 8061
3604 8049 3606 8046 3603 8044 3600 8041
3599 8042 3596 8038 3592 8037 3591 8038
3589 8037
TIME...MOT...LOC 2155Z 277DEG 15KT 3602 8053
$$
ARK
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Baltimore MD/Washington DC
432 PM EDT Fri Aug 18 2017
MDZ003>006-501>507-VAZ025>031-036>040-050-051-501>508-WVZ050>053-
055-501>506-192045-
Washington-Frederick MD-Carroll-Northern Baltimore-
Extreme Western Allegany-Central and Eastern Allegany-
Northwest Montgomery-Central and Southeast Montgomery-
Northwest Howard-Central and Southeast Howard-Northwest Harford-
Augusta-Rockingham-Shenandoah-Frederick VA-Page-Warren-Clarke-
Nelson-Albemarle-Greene-Madison-Rappahannock-Orange-Culpeper-
Northern Fauquier-Southern Fauquier-Western Highland-
Eastern Highland-Western Loudoun-Eastern Loudoun-
Northern Virginia Blue Ridge-Central Virginia Blue Ridge-
Hampshire-Morgan-Berkeley-Jefferson-Hardy-Western Grant-
Eastern Grant-Western Mineral-Eastern Mineral-Western Pendleton-
Eastern Pendleton-
432 PM EDT Fri Aug 18 2017
This Hazardous Weather Outlook is for eastern West Virginia,
northern and central Virginia, and central and western Maryland
with the exception of Garrett County.
.DAY ONE...Tonight
A Severe Thunderstorm Watch is in effect until 9 PM for portions
of northern and central Maryland and northern Virginia. Thunderstorms
across the area will be capable of producing locally damaging
wind gusts and large hail.
A Flash Flood Watch is in effect until 2 AM for the Washington
and Baltimore metropolitan areas. Isolated flash flooding is
possible due to locally heavy downpours from training
thunderstorms.
A Heat Advisory is in effect until 8 PM for portions of central
Maryland and the Virginia Piedmont close to Interstate 95. Heat
indices around 105 degrees are expected.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
No hazardous weather is expected at this time.
.SPOTTER INFORMATION STATEMENT...
Spotter networks are activiated through this evening. Please
report severe weather and flooding to the National Weather
Service.
$$
Hazardous Weather Outlook
National Weather Service Raleigh NC
316 PM EDT Fri Aug 18 2017
NCZ007-021>024-038-039-191930-
Person-Forsyth-Guilford-Alamance-Orange-Davidson-Randolph-
316 PM EDT Fri Aug 18 2017
This Hazardous Weather Outlook is for central North Carolina.
.DAY ONE...This Afternoon and Tonight.
A few strong thunderstorms with wind gusts in excess of 50 mph are
possible late this afternoon through mid evening.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Hazardous weather is not expected at this time.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Raleigh NC
316 PM EDT Fri Aug 18 2017
NCZ008>011-191930-
Granville-Vance-Warren-Halifax-
316 PM EDT Fri Aug 18 2017
This Hazardous Weather Outlook is for central North Carolina.
.DAY ONE...This Afternoon and Tonight.
A few strong thunderstorms with wind gusts in excess of 50 mph are
possible this evening.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Hazardous weather is not expected at this time.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Raleigh NC
316 PM EDT Fri Aug 18 2017
NCZ025>028-040-041-043-191930-
Durham-Franklin-Nash-Edgecombe-Chatham-Wake-Wilson-
316 PM EDT Fri Aug 18 2017
...HEAT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...
This Hazardous Weather Outlook is for central North Carolina.
.DAY ONE...This Afternoon and Tonight.
Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.
Heat Advisory.
Heat index values will approach or exceed 105 degrees over much of
the area this afternoon.
In addition, a few strong thunderstorms with wind gusts in excess of
50 mph are possible this evening.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Hazardous weather is not expected at this time.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Blacksburg VA
305 PM EDT Fri Aug 18 2017
NCZ003>006-019-020-VAZ014-016>020-022>024-032>035-043>047-058-059-
191915-
Surry-Stokes-Rockingham-Caswell-Wilkes-Yadkin-Montgomery-Carroll-
Floyd-Craig-Alleghany VA-Bath-Roanoke-Botetourt-Rockbridge-Patrick-
Franklin-Bedford-Amherst-Henry-Pittsylvania-Campbell-Appomattox-
Buckingham-Halifax-Charlotte-
305 PM EDT Fri Aug 18 2017
This Hazardous Weather Outlook is for north central North Carolina,
northwest North Carolina, central Virginia, south central Virginia,
southwest Virginia and west central Virginia.
.DAY ONE...This afternoon and tonight.
A few strong to isolated severe thunderstorms containing damaging
winds could occur through early this evening.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
There is a low probability for widespread hazardous weather.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Wakefield VA
237 PM EDT Fri Aug 18 2017
VAZ048-061-062-064-068-069-075>078-083-085-509>522-191845-
Fluvanna-Cumberland-Goochland-Caroline-Amelia-Powhatan-Westmoreland-
Richmond-Northumberland-Lancaster-New Kent-Middlesex-Western Louisa-
Eastern Louisa-Western Hanover-Eastern Hanover-Western Chesterfield-
Eastern Chesterfield (Including Col. Heights)-
Western Henrico (Including the City of Richmond)-Eastern Henrico-
Western King William-Eastern King William-Western King and Queen-
Eastern King and Queen-Western Essex-Eastern Essex-
237 PM EDT Fri Aug 18 2017
This Hazardous Weather Outlook is for central Virginia, east
central Virginia, eastern Virginia and north central Virginia.
.DAY ONE...This Afternoon and Tonight.
There is a slight risk for severe thunderstorms today across the
outlook area. Scattered to numerous thunderstorms are expected,
mainly during the late afternoon and evening hours. The main threats
will be damaging winds, frequent lightning and locally heavy
rainfall.
In addition...hot and humid conditions are expected. Heat index
values will be in the 98 to 104 degree range through early this
evening.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
No hazardous weather is expected at this time.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Wakefield VA
237 PM EDT Fri Aug 18 2017
NCZ012-102-VAZ060-065>067-079>082-086>088-092-099-100-191845-
Northampton-Eastern Currituck-Prince Edward-Mecklenburg-Lunenburg-
Nottoway-Brunswick-Dinwiddie-Prince George-Charles City-Mathews-
Greensville-Sussex-Southampton-Accomack-
237 PM EDT Fri Aug 18 2017
This Hazardous Weather Outlook is for northeast North Carolina,
central Virginia, east central Virginia, eastern Virginia, south
central Virginia and southeast Virginia.
.DAY ONE...This Afternoon and Tonight.
Scattered thunderstorms are possible late this afternoon into this
evening. Some of the storms may produce strong gusty winds...
frequent lightning...and heavy downpours.
In addition...hot and very humid conditions will persist through
early this evening. Heat index values will be around 100 to 104
degrees into early this evening.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
No hazardous weather is expected at this time.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
607 AM EDT Fri Aug 18 2017
GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-191015-
Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Avery-Alexander-
Iredell-Davie-Madison-Yancey-Mitchell-Swain-Haywood-Buncombe-Catawba-
Rowan-Graham-Northern Jackson-Macon-Southern Jackson-Transylvania-
Henderson-Cleveland-Lincoln-Gaston-Mecklenburg-Cabarrus-Union-
Caldwell Mountains-Greater Caldwell-Burke Mountains-Greater Burke-
McDowell Mountains-Eastern McDowell-Rutherford Mountains-
Greater Rutherford-Polk Mountains-Eastern Polk-Oconee Mountains-
Pickens Mountains-Greenville Mountains-Greater Oconee-
Greater Pickens-Greater Greenville-Spartanburg-Cherokee-York-
Anderson-Abbeville-Laurens-Chester-Greenwood-
607 AM EDT Fri Aug 18 2017
This Hazardous Weather Outlook is for northeast Georgia, piedmont
North Carolina, western North Carolina and upstate South Carolina.
.DAY ONE...Today and Tonight.
A few short-lived severe thunderstorms are possible this afternoon
ahead of an advancing cold front. With moderate deep layered shear
and a destabilizing atmosphere, these storms will be capable of
producing damaging winds and large damaging hail.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
..Saturday...No hazardous weather is expected at this time.
..Sunday...No hazardous weather is expected at this time.
..Monday...No hazardous weather is expected at this time.
..Tuesday...No hazardous weather is expected at this time.
..Wednesday...No hazardous weather is expected at this time.
..Thursday...No hazardous weather is expected at this time.
.SPOTTER INFORMATION STATEMENT...
None.
$$
