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
Tornado Watch Number 401
NWS Storm Prediction Center Norman OK
225 PM EDT Thu Jul 29 2021
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Delaware
Central and Eastern Maryland
Much of New Jersey
Central and Southeast Pennsylvania
Coastal Waters
* Effective this Thursday afternoon and evening from 225 PM until
900 PM EDT.
* Primary threats include...
A couple tornadoes possible
Scattered damaging wind gusts to 70 mph likely
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Thunderstorms over central Pennsylvania will intensify as
they move eastward, while isolated storms form out ahead of the main
activity. A few supercells and bowing lines are expected, capable
of damaging winds, hail, and perhaps a few tornadoes.
The tornado watch area is approximately along and 55 statute miles
north and south of a line from 40 miles south southwest of State
College PA to 40 miles east of Atlantic City NJ. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and 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.
&&
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 27035.
...Hart
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 401
NWS Storm Prediction Center Norman OK
225 PM EDT Thu Jul 29 2021
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Delaware
Central and Eastern Maryland
Much of New Jersey
Central and Southeast Pennsylvania
Coastal Waters
* Effective this Thursday afternoon and evening from 225 PM until
900 PM EDT.
* Primary threats include...
A couple tornadoes possible
Scattered damaging wind gusts to 70 mph likely
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Thunderstorms over central Pennsylvania will intensify as
they move eastward, while isolated storms form out ahead of the main
activity. A few supercells and bowing lines are expected, capable
of damaging winds, hail, and perhaps a few tornadoes.
The tornado watch area is approximately along and 55 statute miles
north and south of a line from 40 miles south southwest of State
College PA to 40 miles east of Atlantic City NJ. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and 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.
&&
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 27035.
...Hart
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 401 TORNADO DE MD NJ PA CW 291825Z - 300100Z
AXIS..55 STATUTE MILES NORTH AND SOUTH OF LINE..
40SSW UNV/STATE COLLEGE PA/ - 40E ACY/ATLANTIC CITY NJ/
..AVIATION COORDS.. 50NM N/S /32E JST - 36SE CYN/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27035.
LAT...LON 41117814 40247383 38657383 39527814
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 401 Status Report Messages:
STATUS REPORT #4 ON WW 401
VALID 300030Z - 300140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 SE ACY TO
5 SSE ILG TO 20 WNW TTN TO 25 W EWR TO 30 SE JFK.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1394
..MOORE..07/30/21
ATTN...WFO...PHI...LWX...CTP...
&&
STATUS REPORT FOR WT 401
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NJC001-005-007-015-021-023-025-029-033-035-300140-
NJ
. NEW JERSEY COUNTIES INCLUDED ARE
ATLANTIC BURLINGTON CAMDEN
GLOUCESTER MERCER MIDDLESEX
MONMOUTH OCEAN SALEM
SOMERSET
$$
PAC017-045-101-300140-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BUCKS DELAWARE PHILADELPHIA
$$
ANZ450-451-452-300140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
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
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 401
VALID 292345Z - 300040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 E SBY TO
15 SSE ILG TO 10 NW PHL TO 15 S MSV.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1393
..MOORE..07/29/21
ATTN...WFO...PHI...LWX...CTP...
&&
STATUS REPORT FOR WT 401
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NJC001-005-007-009-011-015-019-021-023-025-027-029-033-035-037-
041-300040-
NJ
. NEW JERSEY COUNTIES INCLUDED ARE
ATLANTIC BURLINGTON CAMDEN
CAPE MAY CUMBERLAND GLOUCESTER
HUNTERDON MERCER MIDDLESEX
MONMOUTH MORRIS OCEAN
SALEM SOMERSET SUSSEX
WARREN
$$
PAC017-045-101-300040-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BUCKS DELAWARE PHILADELPHIA
$$
ANZ431-450-451-452-453-454-455-300040-
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
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 401
VALID 292245Z - 292340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 ESE MRB
TO 15 SW AVP.
..MOORE..07/29/21
ATTN...WFO...PHI...LWX...CTP...
&&
STATUS REPORT FOR WT 401
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
DEC001-003-005-292340-
DE
. DELAWARE COUNTIES INCLUDED ARE
KENT NEW CASTLE SUSSEX
$$
MDC003-005-011-013-015-025-027-029-035-041-510-292340-
MD
. MARYLAND COUNTIES INCLUDED ARE
ANNE ARUNDEL BALTIMORE CAROLINE
CARROLL CECIL HARFORD
HOWARD KENT QUEEN ANNE'S
TALBOT
MARYLAND INDEPENDENT CITIES INCLUDED ARE
BALTIMORE CITY
$$
NJC001-005-007-009-011-015-019-021-023-025-027-029-033-035-037-
041-292340-
NJ
. NEW JERSEY COUNTIES INCLUDED ARE
ATLANTIC BURLINGTON CAMDEN
CAPE MAY CUMBERLAND GLOUCESTER
HUNTERDON MERCER MIDDLESEX
MONMOUTH MORRIS OCEAN
SALEM SOMERSET SUSSEX
WARREN
$$
PAC011-017-025-029-045-071-075-077-089-091-095-101-107-133-
292340-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BERKS BUCKS CARBON
CHESTER DELAWARE LANCASTER
LEBANON LEHIGH MONROE
MONTGOMERY NORTHAMPTON PHILADELPHIA
SCHUYLKILL YORK
$$
ANZ430-431-450-451-452-453-454-455-530-531-532-538-539-540-
292340-
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
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR
CHESTER RIVER TO QUEENSTOWN MD
EASTERN BAY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 401
VALID 292200Z - 292340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 SE MRB TO
25 ESE HGR TO 5 E CXY TO 5 E AVP.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1391
..MOORE..07/29/21
ATTN...WFO...PHI...LWX...CTP...
&&
STATUS REPORT FOR WT 401
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
DEC001-003-005-292340-
DE
. DELAWARE COUNTIES INCLUDED ARE
KENT NEW CASTLE SUSSEX
$$
MDC003-005-011-013-015-025-027-029-035-041-510-292340-
MD
. MARYLAND COUNTIES INCLUDED ARE
ANNE ARUNDEL BALTIMORE CAROLINE
CARROLL CECIL HARFORD
HOWARD KENT QUEEN ANNE'S
TALBOT
MARYLAND INDEPENDENT CITIES INCLUDED ARE
BALTIMORE CITY
$$
NJC001-005-007-009-011-015-019-021-023-025-027-029-033-035-037-
041-292340-
NJ
. NEW JERSEY COUNTIES INCLUDED ARE
ATLANTIC BURLINGTON CAMDEN
CAPE MAY CUMBERLAND GLOUCESTER
HUNTERDON MERCER MIDDLESEX
MONMOUTH MORRIS OCEAN
SALEM SOMERSET SUSSEX
WARREN
$$
PAC011-017-025-029-045-071-075-077-089-091-095-101-107-133-
292340-
PA
. PENNSYLVANIA COUNTIES INCLUDED ARE
BERKS BUCKS CARBON
CHESTER DELAWARE LANCASTER
LEBANON LEHIGH MONROE
MONTGOMERY NORTHAMPTON PHILADELPHIA
SCHUYLKILL YORK
$$
ANZ430-431-450-451-452-453-454-455-530-531-532-538-539-540-
292340-
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
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR
CHESTER RIVER TO QUEENSTOWN MD
EASTERN BAY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Mod (40%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (20%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (60%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Low (20%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (10%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (80%)
|
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.