SEL4

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 484
   NWS Storm Prediction Center Norman OK
   645 PM EDT Wed Sep 2 2020

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     District Of Columbia
     Delaware
     Central and Eastern Maryland
     Southern New Jersey
     Southeast Pennsylvania
     Northern Virginia
     Coastal Waters

   * Effective this Wednesday night from 645 PM until Midnight EDT.

   * Primary threats include...
     Scattered damaging wind gusts to 70 mph possible
     A tornado or two possible

   SUMMARY...Thunderstorms have intensified over northern Virginia and
   central Maryland.  This activity will track eastward across the
   watch area through the evening hours, posing a risk of locally
   damaging wind gusts.  A tornado cannot be ruled out.

   The severe thunderstorm watch area is approximately along and 65
   statute miles east and west of a line from 40 miles southeast of
   Washington DC to 50 miles east northeast of Harrisburg PA. For a
   complete depiction of the watch see the associated watch outline
   update (WOUS64 KWNS WOU4).

   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.

   &&

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
   cumulonimbi with maximum tops to 500. Mean storm motion vector
   24030.

   ...Hart

   SEL4

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 484
   NWS Storm Prediction Center Norman OK
   645 PM EDT Wed Sep 2 2020

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     District Of Columbia
     Delaware
     Central and Eastern Maryland
     Southern New Jersey
     Southeast Pennsylvania
     Northern Virginia
     Coastal Waters

   * Effective this Wednesday night from 645 PM until Midnight EDT.

   * Primary threats include...
     Scattered damaging wind gusts to 70 mph possible
     A tornado or two possible

   SUMMARY...Thunderstorms have intensified over northern Virginia and
   central Maryland.  This activity will track eastward across the
   watch area through the evening hours, posing a risk of locally
   damaging wind gusts.  A tornado cannot be ruled out.

   The severe thunderstorm watch area is approximately along and 65
   statute miles east and west of a line from 40 miles southeast of
   Washington DC to 50 miles east northeast of Harrisburg PA. For a
   complete depiction of the watch see the associated watch outline
   update (WOUS64 KWNS WOU4).

   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.

   &&

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
   cumulonimbi with maximum tops to 500. Mean storm motion vector
   24030.

   ...Hart

   WOUS64 KWNS 022240
   WOU4

   BULLETIN - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 484
   NWS STORM PREDICTION CENTER NORMAN OK
   645 PM EDT WED SEP 2 2020

   SEVERE THUNDERSTORM WATCH 484 IS IN EFFECT UNTIL 1200 AM EDT
   FOR THE FOLLOWING LOCATIONS

   DCC001-030400-
   /O.NEW.KWNS.SV.A.0484.200902T2245Z-200903T0400Z/

   DC 
   .    DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE

   DISTRICT OF COLUMBIA 


   DEC001-003-030400-
   /O.NEW.KWNS.SV.A.0484.200902T2245Z-200903T0400Z/

   DE 
   .    DELAWARE COUNTIES INCLUDED ARE

   KENT                 NEW CASTLE          


   MDC003-005-009-011-013-015-017-021-025-027-029-031-033-035-041-
   510-030400-
   /O.NEW.KWNS.SV.A.0484.200902T2245Z-200903T0400Z/

   MD 
   .    MARYLAND COUNTIES INCLUDED ARE

   ANNE ARUNDEL         BALTIMORE           CALVERT             
   CAROLINE             CARROLL             CECIL               
   CHARLES              FREDERICK           HARFORD             
   HOWARD               KENT                MONTGOMERY          
   PRINCE GEORGES       QUEEN ANNE'S        TALBOT              


   MARYLAND INDEPENDENT CITIES INCLUDED ARE

   BALTIMORE CITY       


   NJC011-015-033-030400-
   /O.NEW.KWNS.SV.A.0484.200902T2245Z-200903T0400Z/

   NJ 
   .    NEW JERSEY COUNTIES INCLUDED ARE

   CUMBERLAND           GLOUCESTER          SALEM               


   PAC001-011-029-041-043-045-071-075-091-101-133-030400-
   /O.NEW.KWNS.SV.A.0484.200902T2245Z-200903T0400Z/

   PA 
   .    PENNSYLVANIA COUNTIES INCLUDED ARE

   ADAMS                BERKS               CHESTER             
   CUMBERLAND           DAUPHIN             DELAWARE            
   LANCASTER            LEBANON             MONTGOMERY          
   PHILADELPHIA         YORK                


   VAC013-059-061-099-107-153-177-179-510-600-610-630-683-685-
   030400-
   /O.NEW.KWNS.SV.A.0484.200902T2245Z-200903T0400Z/

   VA 
   .    VIRGINIA COUNTIES INCLUDED ARE

   ARLINGTON            FAIRFAX             FAUQUIER            
   KING GEORGE          LOUDOUN             PRINCE WILLIAM      
   SPOTSYLVANIA         STAFFORD            


   VIRGINIA INDEPENDENT CITIES INCLUDED ARE

   ALEXANDRIA           FAIRFAX             FALLS CHURCH        
   FREDERICKSBURG       MANASSAS            MANASSAS PARK       


   ANZ430-530-531-532-533-535-536-538-539-540-541-542-030400-
   /O.NEW.KWNS.SV.A.0484.200902T2245Z-200903T0400Z/

   CW 

   .    ADJACENT COASTAL WATERS INCLUDED ARE

   DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE 

   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 

   TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD 

   TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD 

   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 

   ATTN...WFO...LWX...PHI...CTP...

   SAW4 
   WW 484 SEVERE TSTM DC DE MD NJ PA VA CW 022245Z - 030400Z
   AXIS..65 STATUTE MILES EAST AND WEST OF LINE..
   40SE DCA/WASHINGTON DC/ - 50ENE CXY/HARRISBURG PA/
   ..AVIATION COORDS.. 55NM E/W /36SE DCA - 14WSW ETX/
   HAIL SURFACE AND ALOFT..1 INCH. WIND GUSTS..60 KNOTS.
   MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24030.

   LAT...LON 38437771 40497719 40497472 38437531

   THIS IS AN APPROXIMATION TO THE WATCH AREA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
   FOR WOU4.

Watch 484 Status Report Messages:

STATUS REPORT #4 ON WW 484

VALID 030245Z - 030340Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 ENE NHK
TO 40 NNE NHK TO 15 W DOV TO 15 NNE DOV TO 15 SW ACY.

..JEWELL..09/03/20

ATTN...WFO...

&&

STATUS REPORT FOR WS 484 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

DEC001-030340-

DE 
.    DELAWARE COUNTIES INCLUDED ARE

KENT		     
$$


MDC011-030340-

MD 
.    MARYLAND COUNTIES INCLUDED ARE

CAROLINE	     
$$


NJC011-030340-

NJ 
.    NEW JERSEY COUNTIES INCLUDED ARE

CUMBERLAND	     
$$


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 484

VALID 030150Z - 030240Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NE NHK TO
30 E BWI TO 15 W ILG TO 5 W PHL TO 25 E PHL.

..JEWELL..09/03/20

ATTN...WFO...

&&

STATUS REPORT FOR WS 484 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

DEC001-003-030240-

DE 
.    DELAWARE COUNTIES INCLUDED ARE

KENT		     NEW CASTLE 	 
$$


MDC011-015-029-035-041-030240-

MD 
.    MARYLAND COUNTIES INCLUDED ARE

CAROLINE	     CECIL		 KENT		     
QUEEN ANNE'S	     TALBOT		 
$$


NJC011-015-033-030240-

NJ 
.    NEW JERSEY COUNTIES INCLUDED ARE

CUMBERLAND	     GLOUCESTER 	 SALEM		     
$$


ANZ430-539-030240-

CW 

.    ADJACENT COASTAL WATERS INCLUDED ARE

ANZ430 

ANZ539 

$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY.  PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$

STATUS REPORT #2 ON WW 484

VALID 030105Z - 030240Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 ENE CHO
TO 25 WSW DCA TO 10 SW BWI TO 20 NNE BWI TO 30 WNW ILG TO 35 NNW
ILG TO 10 S ABE.

FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1671

..JEWELL..09/03/20

ATTN...WFO...

&&

STATUS REPORT FOR WS 484 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

DEC001-003-030240-

DE 
.    DELAWARE COUNTIES INCLUDED ARE

KENT		     NEW CASTLE 	 
$$


MDC003-009-011-015-017-025-029-033-035-041-030240-

MD 
.    MARYLAND COUNTIES INCLUDED ARE

ANNE ARUNDEL	     CALVERT		 CAROLINE	     
CECIL		     CHARLES		 HARFORD	     
KENT		     PRINCE GEORGES	 QUEEN ANNE'S	     
TALBOT		     
$$


NJC011-015-033-030240-

NJ 
.    NEW JERSEY COUNTIES INCLUDED ARE

CUMBERLAND	     GLOUCESTER 	 SALEM		     
$$


PAC029-045-091-101-030240-

PA 
.    PENNSYLVANIA COUNTIES INCLUDED ARE

CHESTER 	     DELAWARE		 MONTGOMERY	     
PHILADELPHIA	     
$$


ANZ430-530-532-533-539-540-541-542-030240-

CW 

.    ADJACENT COASTAL WATERS INCLUDED ARE

ANZ430 

ANZ530 

ANZ532 

ANZ533 

ANZ539 

ANZ540 

ANZ541 

ANZ542 

$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY.  PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$

STATUS REPORT #1 ON WW 484

VALID 022355Z - 030040Z

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 S MRB TO
30 ESE MRB TO 30 WNW BWI TO 30 NNW BWI TO 15 SE CXY TO 10 ENE CXY
TO 35 NE CXY.

..JEWELL..09/02/20

ATTN...WFO...LWX...PHI...CTP...

&&

STATUS REPORT FOR WS 484 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

DEC001-003-030040-

DE 
.    DELAWARE COUNTIES INCLUDED ARE

KENT		     NEW CASTLE 	 
$$


DCC001-030040-

DC 
.    DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE

DISTRICT OF COLUMBIA 
$$


MDC003-005-009-011-013-015-017-025-027-029-031-033-035-041-510-
030040-

MD 
.    MARYLAND COUNTIES INCLUDED ARE

ANNE ARUNDEL	     BALTIMORE		 CALVERT	     
CAROLINE	     CARROLL		 CECIL		     
CHARLES 	     HARFORD		 HOWARD 	     
KENT		     MONTGOMERY 	 PRINCE GEORGES      
QUEEN ANNE'S	     TALBOT		 


MARYLAND INDEPENDENT CITIES INCLUDED ARE

BALTIMORE CITY	     
$$


NJC011-015-033-030040-

NJ 
.    NEW JERSEY COUNTIES INCLUDED ARE

CUMBERLAND	     GLOUCESTER 	 SALEM		     
$$


PAC011-029-045-071-075-091-101-133-030040-

PA 
.    PENNSYLVANIA COUNTIES INCLUDED ARE

BERKS		     CHESTER		 DELAWARE	     
LANCASTER	     LEBANON		 MONTGOMERY	     
PHILADELPHIA	     YORK		 
$$


VAC013-059-061-099-107-153-177-179-510-600-610-630-683-685-
030040-

VA 
.    VIRGINIA COUNTIES INCLUDED ARE

ARLINGTON	     FAIRFAX		 FAUQUIER	     
KING GEORGE	     LOUDOUN		 PRINCE WILLIAM      
SPOTSYLVANIA	     STAFFORD		 


VIRGINIA INDEPENDENT CITIES INCLUDED ARE

ALEXANDRIA	     FAIRFAX		 FALLS CHURCH	     
FREDERICKSBURG	     MANASSAS		 MANASSAS PARK	     
$$


ANZ430-530-531-532-533-535-536-538-539-540-541-542-030040-

CW 

.    ADJACENT COASTAL WATERS INCLUDED ARE

DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE 

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 

TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD 

TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD 

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 

$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY.  PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$

Please visit the National Weather Service Interactive Weather Information Network (IWIN) for more information on the warnings.

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.