Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 511
NWS Storm Prediction Center Norman OK
530 PM EST Sun Nov 15 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
District Of Columbia
Delaware
Central and eastern Maryland
New Jersey
Southeastern Pennsylvania
Northeastern Virginia
Coastal Waters
* Effective this Sunday afternoon and evening from 530 PM until
1100 PM EST.
THUNDERSTORM WIND GUSTS TO 70 MPH...and DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.
The severe thunderstorm watch area is approximately along and 65
statute miles east and west of a line from 25 miles north northeast
of Allentown PA to 50 miles southeast of Washington DC. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU1).
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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 510...
AVIATION...A few severe thunderstorms with hail surface and aloft to
0 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 200. Mean storm motion vector
26045.
...Thompson
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 511 SEVERE TSTM DC DE MD NJ PA VA CW 152230Z - 160400Z
AXIS..65 STATUTE MILES EAST AND WEST OF LINE..
25NNE ABE/ALLENTOWN PA/ - 50SE DCA/WASHINGTON DC/
..AVIATION COORDS.. 55NM E/W /31NE ETX - 40W SBY/
WIND GUSTS..60 KNOTS.
MAX TOPS TO 200.MEAN STORM MOTION VECTOR 26045.
LAT...LON 40987400 38337518 38337758 40987649
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 511 Status Report Messages:
STATUS REPORT #3 ON WW 511
VALID 160255Z - 160340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 ENE NHK
TO 20 SSW ACY.
..SPC..11/16/20
ATTN...WFO...LWX...PHI...AKQ...CTP...
&&
STATUS REPORT FOR WS 511
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
DEC005-160340-
DE
. DELAWARE COUNTIES INCLUDED ARE
SUSSEX
$$
MDC019-035-039-045-047-160340-
MD
. MARYLAND COUNTIES INCLUDED ARE
DORCHESTER QUEEN ANNE'S SOMERSET
WICOMICO WORCESTER
$$
NJC009-160340-
NJ
. NEW JERSEY COUNTIES INCLUDED ARE
CAPE MAY
$$
VAC133-160340-
VA
. VIRGINIA COUNTIES INCLUDED ARE
NORTHUMBERLAND
$$
ANZ431-450-451-452-453-454-455-539-650-160340-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE
COASTAL WATERS FROM SANDY HOOK TO MANASQUAN INLET NJ OUT 20 NM
COASTAL WATERS FROM MANASQUAN INLET TO LITTLE EGG INLET NJ OUT 20
NM
COASTAL WATERS FROM LITTLE EGG INLET TO GREAT EGG INLET NJ OUT 20
NM
COASTAL WATERS FROM GREAT EGG INLET TO CAPE MAY NJ OUT 20 NM
COASTAL WATERS FROM CAPE MAY NJ TO CAPE HENLOPEN DE OUT 20 NM
COASTAL WATERS FROM CAPE HENLOPEN TO FENWICK ISLAND DE OUT 20 NM
CHESTER RIVER TO QUEENSTOWN MD
COASTAL WATERS FROM FENWICK ISLAND DE TO CHINCOTEAGUE VA OUT 20
NM
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 511
VALID 160130Z - 160240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 W NHK TO
10 SE ILG TO 10 NE TTN TO 20 N EWR.
..SPC..11/16/20
ATTN...WFO...LWX...PHI...AKQ...CTP...
&&
STATUS REPORT FOR WS 511
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
DEC001-005-160240-
DE
. DELAWARE COUNTIES INCLUDED ARE
KENT SUSSEX
$$
MDC009-011-019-035-037-039-041-045-047-160240-
MD
. MARYLAND COUNTIES INCLUDED ARE
CALVERT CAROLINE DORCHESTER
QUEEN ANNE'S ST. MARYS SOMERSET
TALBOT WICOMICO WORCESTER
$$
NJC001-005-007-009-011-015-021-023-025-029-033-160240-
NJ
. NEW JERSEY COUNTIES INCLUDED ARE
ATLANTIC BURLINGTON CAMDEN
CAPE MAY CUMBERLAND GLOUCESTER
MERCER MIDDLESEX MONMOUTH
OCEAN SALEM
$$
VAC133-193-160240-
VA
. VIRGINIA COUNTIES INCLUDED ARE
NORTHUMBERLAND WESTMORELAND
$$
ANZ431-450-451-452-453-454-455-533-534-537-540-541-542-543-650-
160240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE
COASTAL WATERS FROM SANDY HOOK TO MANASQUAN INLET NJ OUT 20 NM
COASTAL WATERS FROM MANASQUAN INLET TO LITTLE EGG INLET NJ OUT 20
NM
COASTAL WATERS FROM LITTLE EGG INLET TO GREAT EGG INLET NJ OUT 20
NM
COASTAL WATERS FROM GREAT EGG INLET TO CAPE MAY NJ OUT 20 NM
COASTAL WATERS FROM CAPE MAY NJ TO CAPE HENLOPEN DE OUT 20 NM
COASTAL WATERS FROM CAPE HENLOPEN TO FENWICK ISLAND DE OUT 20 NM
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD
CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA
TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA
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
COASTAL WATERS FROM FENWICK ISLAND DE TO CHINCOTEAGUE VA OUT 20
NM
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 511
VALID 160010Z - 160140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 WNW BWI
TO 35 ESE CXY TO 25 S AVP.
..SPC..11/16/20
ATTN...WFO...LWX...PHI...AKQ...CTP...
&&
STATUS REPORT FOR WS 511
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
DEC001-003-005-160140-
DE
. DELAWARE COUNTIES INCLUDED ARE
KENT NEW CASTLE SUSSEX
$$
DCC001-160140-
DC
. DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE
DISTRICT OF COLUMBIA
$$
MDC003-005-009-011-015-017-019-025-027-029-033-035-037-039-041-
045-047-510-160140-
MD
. MARYLAND COUNTIES INCLUDED ARE
ANNE ARUNDEL BALTIMORE CALVERT
CAROLINE CECIL CHARLES
DORCHESTER HARFORD HOWARD
KENT PRINCE GEORGES QUEEN ANNE'S
ST. MARYS SOMERSET TALBOT
WICOMICO WORCESTER
MARYLAND INDEPENDENT CITIES INCLUDED ARE
BALTIMORE CITY
$$
NJC001-005-007-009-011-015-019-021-023-025-027-029-033-035-037-
041-160140-
NJ
. NEW JERSEY COUNTIES INCLUDED ARE
ATLANTIC BURLINGTON CAMDEN
CAPE MAY CUMBERLAND GLOUCESTER
HUNTERDON MERCER MIDDLESEX
MONMOUTH MORRIS OCEAN
SALEM SOMERSET SUSSEX
WARREN
$$
PAC011-017-025-029-045-071-077-089-091-095-101-133-160140-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BERKS BUCKS CARBON
CHESTER DELAWARE LANCASTER
LEHIGH MONROE MONTGOMERY
NORTHAMPTON PHILADELPHIA YORK
$$
VAC013-059-099-133-153-179-193-510-600-610-683-685-160140-
VA
. VIRGINIA COUNTIES INCLUDED ARE
ARLINGTON FAIRFAX KING GEORGE
NORTHUMBERLAND PRINCE WILLIAM STAFFORD
WESTMORELAND
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
ALEXANDRIA FAIRFAX FALLS CHURCH
MANASSAS MANASSAS PARK
$$
ANZ430-431-450-451-452-453-454-455-530-531-532-533-534-535-536-
537-538-539-540-541-542-543-650-160140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE
DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE
COASTAL WATERS FROM SANDY HOOK TO MANASQUAN INLET NJ OUT 20 NM
COASTAL WATERS FROM MANASQUAN INLET TO LITTLE EGG INLET NJ OUT 20
NM
COASTAL WATERS FROM LITTLE EGG INLET TO GREAT EGG INLET NJ OUT 20
NM
COASTAL WATERS FROM GREAT EGG INLET TO CAPE MAY NJ OUT 20 NM
COASTAL WATERS FROM CAPE MAY NJ TO CAPE HENLOPEN DE OUT 20 NM
COASTAL WATERS FROM CAPE HENLOPEN TO FENWICK ISLAND DE OUT 20 NM
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
COASTAL WATERS FROM FENWICK ISLAND DE TO CHINCOTEAGUE VA OUT 20
NM
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (10%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (50%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Low (<5%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (<5%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
Mod (60%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (EF2-EF5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.