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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 588
NWS Storm Prediction Center Norman OK
435 PM EDT Sun Aug 16 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
District Of Columbia
Maryland
Central Pennsylvania
Virginia
Eastern West Virginia
Coastal Waters
* Effective this Sunday afternoon and evening from 435 PM until
1100 PM EDT.
* Primary threats include...
Scattered damaging wind gusts to 65 mph likely
A tornado or two possible
SUMMARY...Multiple organized clusters of storms will likely cross
the mountains and generally persist east-southeastward into the
region, as the downstream air mass near/east of the mountains
destabilizes in the wake of early morning storms and cloud cover.
Damaging winds are the most common severe hazard expected, but some
tornado potential may exist as well, particularly near an effective
warm front.
The severe thunderstorm watch area is approximately along and 65
statute miles east and west of a line from 40 miles east northeast
of Altoona PA to 50 miles south southwest of Staunton VA. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU8).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 588 NWS STORM PREDICTION CENTER NORMAN OK 435 PM EDT SUN AUG 16 2026 SEVERE THUNDERSTORM WATCH 588 IS IN EFFECT UNTIL 1100 PM EDT FOR THE FOLLOWING LOCATIONS DCC001-170300- /O.NEW.KWNS.SV.A.0588.260816T2035Z-260817T0300Z/ DC . DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE DISTRICT OF COLUMBIA MDC001-013-017-021-023-027-031-033-043-170300- /O.NEW.KWNS.SV.A.0588.260816T2035Z-260817T0300Z/ MD . MARYLAND COUNTIES INCLUDED ARE ALLEGANY CARROLL CHARLES FREDERICK GARRETT HOWARD MONTGOMERY PRINCE GEORGES WASHINGTON PAC001-009-013-021-027-033-041-055-057-061-067-087-099-111- 170300- /O.NEW.KWNS.SV.A.0588.260816T2035Z-260817T0300Z/ PA . PENNSYLVANIA COUNTIES INCLUDED ARE ADAMS BEDFORD BLAIR CAMBRIA CENTRE CLEARFIELD CUMBERLAND FRANKLIN FULTON HUNTINGDON JUNIATA MIFFLIN PERRY SOMERSET VAC003-005-009-013-015-017-023-029-043-045-047-049-059-061-065- 069-075-079-091-099-107-109-113-125-137-139-145-153-157-163-165- 171-177-179-187-510-530-540-580-600-610-630-660-678-683-685-790- 820-840-170300- /O.NEW.KWNS.SV.A.0588.260816T2035Z-260817T0300Z/ VA . VIRGINIA COUNTIES INCLUDED ARE ALBEMARLE ALLEGHANY AMHERST ARLINGTON AUGUSTA BATH BOTETOURT BUCKINGHAM CLARKE CRAIG CULPEPER CUMBERLAND FAIRFAX FAUQUIER FLUVANNA FREDERICK GOOCHLAND GREENE HIGHLAND KING GEORGE LOUDOUN LOUISA MADISON NELSON ORANGE PAGE POWHATAN PRINCE WILLIAM RAPPAHANNOCK ROCKBRIDGE ROCKINGHAM SHENANDOAH SPOTSYLVANIA STAFFORD WARREN VIRGINIA INDEPENDENT CITIES INCLUDED ARE ALEXANDRIA BUENA VISTA CHARLOTTESVILLE COVINGTON FAIRFAX FALLS CHURCH FREDERICKSBURG HARRISONBURG LEXINGTON MANASSAS MANASSAS PARK STAUNTON WAYNESBORO WINCHESTER WVC003-023-025-027-031-037-057-063-065-071-089-170300- /O.NEW.KWNS.SV.A.0588.260816T2035Z-260817T0300Z/ WV . WEST VIRGINIA COUNTIES INCLUDED ARE BERKELEY GRANT GREENBRIER HAMPSHIRE HARDY JEFFERSON MINERAL MONROE MORGAN PENDLETON SUMMERS ANZ535-536-170300- /O.NEW.KWNS.SV.A.0588.260816T2035Z-260817T0300Z/ CW . ADJACENT COASTAL WATERS INCLUDED ARE TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD ATTN...WFO...LWX...RNK...AKQ...CTP...
