Small Craft Advisory 83, NWS Baltimore/Washington

134 
WHUS71 KLWX 200812
MWWLWX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
412 AM EDT Tue Apr 20 2021

ANZ531-537-538-201615-
/O.EXT.KLWX.SC.Y.0083.210420T1900Z-210421T1000Z/
/O.CON.KLWX.GL.A.0001.210421T1600Z-210422T2200Z/
Chesapeake Bay from Pooles Island to Sandy Point MD-
Tidal Potomac from Cobb Island MD to Smith Point VA-
Patapsco River including Baltimore Harbor-
412 AM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 3 PM THIS AFTERNOON TO
6 AM EDT WEDNESDAY...
...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
THURSDAY AFTERNOON...

* WHAT...For the Small Craft Advisory, south winds 10 to 15 kt
  with gusts up to 20 kt expected. For the Gale Watch, west to
  northwest winds 15 to 25 kt with gusts up to 35 kt and waves 2 
  to 4 ft possible.

* WHERE...Patapsco River including Baltimore Harbor, Chesapeake 
  Bay from Pooles Island to Sandy Point MD and Tidal Potomac 
  from Cobb Island MD to Smith Point VA.

* WHEN...For the Small Craft Advisory, from 3 PM this afternoon 
  to 6 AM EDT Wednesday. For the Gale Watch, from Wednesday 
  afternoon through Thursday afternoon.

* IMPACTS...Strong winds can cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

ANZ532>534-539>541-543-201615-
/O.CON.KLWX.SC.Y.0083.210420T1900Z-210421T1000Z/
/O.CON.KLWX.GL.A.0001.210421T1600Z-210422T2200Z/
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-
Chester River to Queenstown MD-Eastern Bay-
Choptank River to Cambridge MD and the Little Choptank River-
Tangier Sound and the inland waters surrounding Bloodsworth
Island-
412 AM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO 6 AM EDT WEDNESDAY...
...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
THURSDAY AFTERNOON...

* WHAT...For the Small Craft Advisory, south winds 10 to 15 kt
  with gusts up to 25 kt expected. For the Gale Watch, west to
  northwest winds 15 to 25 kt with gusts up to 35 kt and waves 2 
  to 4 ft possible.

* WHERE...Chester River to Queenstown MD, Tangier Sound and the 
  inland waters surrounding Bloodsworth Island, Choptank River 
  to Cambridge MD and the Little Choptank River, Chesapeake Bay 
  from North Beach to Drum Point MD, Chesapeake Bay from Sandy 
  Point to North Beach MD, Chesapeake Bay from Drum Point MD to 
  Smith Point VA and Eastern Bay.

* WHEN...For the Small Craft Advisory, from 3 PM this afternoon 
  to 6 AM EDT Wednesday. For the Gale Watch, from Wednesday 
  afternoon through Thursday afternoon.

* IMPACTS...Strong winds can cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

ANZ530-536-542-201615-
/O.CON.KLWX.SC.Y.0083.210421T0400Z-210421T1000Z/
/O.CON.KLWX.GL.A.0001.210421T1600Z-210422T2200Z/
Chesapeake Bay north of Pooles Island MD-
Tidal Potomac from Indian Head to Cobb Island MD-
Patuxent River to Broomes Island MD-
412 AM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 AM EDT WEDNESDAY...
...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
THURSDAY AFTERNOON...

* WHAT...For the Small Craft Advisory, south winds around 10 kt
  with gusts up to 20 kt expected. For the Gale Watch, west to
  northwest winds 15 to 25 kt with gusts up to 35 kt possible.

* WHERE...Patuxent River to Broomes Island MD, Chesapeake Bay 
  north of Pooles Island MD and Tidal Potomac from Indian Head 
  to Cobb Island MD.

* WHEN...For the Small Craft Advisory, from midnight tonight to 
  6 AM EDT Wednesday. For the Gale Watch, from Wednesday 
  afternoon through Thursday afternoon.

* IMPACTS...Strong winds can cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

ANZ535-201615-
/O.CON.KLWX.GL.A.0001.210421T1600Z-210422T2200Z/
Tidal Potomac from Key Bridge to Indian Head MD-
412 AM EDT Tue Apr 20 2021

...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
THURSDAY AFTERNOON...

* WHAT...West to northwest winds 15 to 25 kt with gusts up to 35 
  kt possible.

* WHERE...Tidal Potomac from Key Bridge to Indian Head MD.

* WHEN...From Wednesday afternoon through Thursday afternoon.

* IMPACTS...Strong winds can cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

327 
WHUS71 KLWX 201525
MWWLWX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
1125 AM EDT Tue Apr 20 2021

ANZ531>534-537>541-543-202330-
/O.CON.KLWX.SC.Y.0083.210420T1900Z-210421T1000Z/
/O.CON.KLWX.GL.A.0001.210421T1600Z-210422T2200Z/
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 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-
Tangier Sound and the inland waters surrounding Bloodsworth
Island-
1125 AM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO 6 AM EDT WEDNESDAY...
...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
THURSDAY AFTERNOON...

* WHAT...For the Small Craft Advisory, south winds 10 to 15 kt 
  with gusts up to 25 kt expected. For the Gale Watch, west 
  winds 15 to 25 kt with gusts up to 35 kt possible.

* WHERE...Chesapeake Bay from Pooles Island MD to Smith Point VA
  and adjoining estuaries, and Tidal Potomac from Cobb Island MD 
  to Smith Point VA.

* WHEN...For the Small Craft Advisory, from 3 PM this afternoon 
  to 6 AM EDT Wednesday. For the Gale Watch, from Wednesday 
  afternoon through Thursday afternoon.

* IMPACTS...Strong winds can cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

ANZ530-536-542-202330-
/O.CON.KLWX.SC.Y.0083.210421T0400Z-210421T1000Z/
/O.CON.KLWX.GL.A.0001.210421T1600Z-210422T2200Z/
Chesapeake Bay north of Pooles Island MD-
Tidal Potomac from Indian Head to Cobb Island MD-
Patuxent River to Broomes Island MD-
1125 AM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 AM EDT WEDNESDAY...
...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
THURSDAY AFTERNOON...

* WHAT...For the Small Craft Advisory, south winds around 10 kt
  with gusts up to 20 kt expected. For the Gale Watch, west winds 20
  kt with gusts up to 35 kt possible.

* WHERE...Patuxent River to Broomes Island MD, Chesapeake Bay 
  north of Pooles Island MD and Tidal Potomac from Indian Head 
  to Cobb Island MD.

* WHEN...For the Small Craft Advisory, from midnight tonight to 
  6 AM EDT Wednesday. For the Gale Watch, from Wednesday 
  afternoon through Thursday afternoon.

* IMPACTS...Strong winds can cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

ANZ535-202330-
/O.CON.KLWX.GL.A.0001.210421T1600Z-210422T2200Z/
Tidal Potomac from Key Bridge to Indian Head MD-
1125 AM EDT Tue Apr 20 2021

...GALE WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
THURSDAY AFTERNOON...

* WHAT...West winds 15 to 25 kt with gusts up to 35 kt possible.

* WHERE...Tidal Potomac from Key Bridge to Indian Head MD.

* WHEN...From Wednesday afternoon through Thursday afternoon.

* IMPACTS...Strong winds can cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

398 
WHUS71 KLWX 201810
MWWLWX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
210 PM EDT Tue Apr 20 2021

ANZ531>534-537>541-543-210215-
/O.CON.KLWX.SC.Y.0083.210420T1900Z-210421T1000Z/
/O.NEW.KLWX.GL.W.0014.210421T1000Z-210422T0600Z/
/O.EXT.KLWX.GL.A.0001.210422T0600Z-210422T2200Z/
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 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-
Tangier Sound and the inland waters surrounding Bloodsworth
Island-
210 PM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT
WEDNESDAY...
...GALE WARNING IN EFFECT FROM 6 AM WEDNESDAY TO 2 AM EDT
THURSDAY...
...GALE WATCH NOW IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY AFTERNOON...

* WHAT...For the Gale Warning, west winds 15 to 25 kt with gusts
  up to 35 kt expected. For the Small Craft Advisory, south winds
  10 to 15 kt with gusts up to 25 kt expected. For the Gale Watch,
  west winds 20 kt with gusts up to 35 kt possible.

* WHERE...Chesapeake Bay from Pooles Island MD to Smith Point VA
  and adjoining estuaries, and Tidal Potomac from Cobb Island MD
  to Smith Point VA.

* WHEN...For the Gale Warning, from 6 AM Wednesday to 2 AM EDT 
  Thursday. For the Small Craft Advisory, until 6 AM EDT 
  Wednesday. For the Gale Watch, from late Wednesday night 
  through Thursday afternoon.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ530-536-542-210215-
/O.EXT.KLWX.SC.Y.0083.210420T1900Z-210421T1000Z/
/O.NEW.KLWX.GL.W.0014.210421T1000Z-210422T0600Z/
/O.EXT.KLWX.GL.A.0001.210422T0600Z-210422T2200Z/
Chesapeake Bay north of Pooles Island MD-
Tidal Potomac from Indian Head to Cobb Island MD-
Patuxent River to Broomes Island MD-
210 PM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM EDT WEDNESDAY...
...GALE WARNING IN EFFECT FROM 6 AM WEDNESDAY TO 2 AM EDT
THURSDAY...
...GALE WATCH NOW IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY AFTERNOON...

* WHAT...For the Gale Warning, west winds 15 to 25 kt with gusts
  up to 35 kt expected. For the Small Craft Advisory, south winds
  10 kt with gusts up to 20 kt expected. For the Gale Watch, west
  winds 15 to 20 kt with gusts up to 35 kt possible.

* WHERE...Chesapeake Bay north of Pooles Island MD, Tidal 
  Potomac from Indian Head to Cobb Island MD and Patuxent River 
  to Broomes Island MD.

* WHEN...For the Gale Warning, from 6 AM Wednesday to 2 AM EDT 
  Thursday. For the Small Craft Advisory, until 6 AM EDT 
  Wednesday. For the Gale Watch, from late Wednesday night 
  through Thursday afternoon.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ535-210215-
/O.EXB.KLWX.SC.Y.0083.210420T1900Z-210421T0000Z/
/O.NEW.KLWX.GL.W.0014.210421T1000Z-210422T0600Z/
/O.EXT.KLWX.GL.A.0001.210422T0600Z-210422T2200Z/
Tidal Potomac from Key Bridge to Indian Head MD-
210 PM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...GALE WARNING IN EFFECT FROM 6 AM WEDNESDAY TO 2 AM EDT
THURSDAY...
...GALE WATCH NOW IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY AFTERNOON...

* WHAT...For the Gale Warning, west winds 15 to 25 kt with gusts
  up to 35 kt expected. For the Small Craft Advisory, south winds
  10 to 15 knots with gusts up to 20 knots. For the Gale Watch,
  west winds 15 to 20 kt with gusts up to 35 kt possible.

* WHERE...Tidal Potomac from Key Bridge to Indian Head MD.

* WHEN...For the Gale Warning, from 6 AM Wednesday to 2 AM EDT 
  Thursday. For the Small Craft Advisory, until 8 PM EDT this 
  evening. For the Gale Watch, from late Wednesday night through 
  Thursday afternoon.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

065 
WHUS71 KLWX 210123
MWWLWX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
923 PM EDT Tue Apr 20 2021

ANZ530>534-536>543-210930-
/O.CON.KLWX.SC.Y.0083.000000T0000Z-210421T1000Z/
/O.CON.KLWX.GL.W.0014.210421T1000Z-210422T0600Z/
/O.CON.KLWX.GL.A.0001.210422T0600Z-210422T2200Z/
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 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-
923 PM EDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT
WEDNESDAY...
...GALE WARNING REMAINS IN EFFECT FROM 6 AM WEDNESDAY TO 2 AM EDT
THURSDAY...
...GALE WATCH REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY AFTERNOON...

* WHAT...For the Gale Warning, west winds 15 to 25 kt with gusts 
  up to 35 kt expected. For the Small Craft Advisory, south 
  winds 10 to 15 kt with gusts up to 25 kt expected. For the 
  Gale Watch, west winds 20 kt with gusts up to 35 kt possible.

* WHERE...Chesapeake Bay from Pooles Island MD to Smith Point VA 
  and adjoining estuaries, and Tidal Potomac from Cobb Island MD 
  to Smith Point VA.

* WHEN...For the Gale Warning, from 6 AM Wednesday to 2 AM EDT 
  Thursday. For the Small Craft Advisory, until 6 AM EDT 
  Wednesday. For the Gale Watch, from late Wednesday night 
  through Thursday afternoon.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ535-210930-
/O.CON.KLWX.GL.W.0014.210421T1000Z-210422T0600Z/
/O.CON.KLWX.GL.A.0001.210422T0600Z-210422T2200Z/
Tidal Potomac from Key Bridge to Indian Head MD-
923 PM EDT Tue Apr 20 2021

...GALE WARNING REMAINS IN EFFECT FROM 6 AM WEDNESDAY TO 2 AM EDT
THURSDAY...
...GALE WATCH REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY AFTERNOON...

* WHAT...For the Gale Warning, west winds 15 to 25 kt with gusts 
  up to 35 kt expected. For the Small Craft Advisory, south 
  winds 10 to 15 knots with gusts up to 20 knots. For the Gale 
  Watch, west winds 15 to 20 kt with gusts up to 35 kt possible.

* WHERE...Tidal Potomac from Key Bridge to Indian Head MD.

* WHEN...For the Gale Warning, from 6 AM Wednesday to 2 AM EDT 
  Thursday. For the Small Craft Advisory, until 8 PM EDT this 
  evening. For the Gale Watch, from late Wednesday night through 
  Thursday afternoon.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

489 
WHUS71 KLWX 210801
MWWLWX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
401 AM EDT Wed Apr 21 2021

ANZ530>534-536>543-211615-
/O.CON.KLWX.SC.Y.0083.000000T0000Z-210421T1000Z/
/O.EXT.KLWX.GL.W.0014.210421T1000Z-210422T1000Z/
/O.UPG.KLWX.GL.A.0001.210422T0600Z-210422T2200Z/
/O.NEW.KLWX.SC.Y.0085.210422T1000Z-210422T2200Z/
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 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-
401 AM EDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT EARLY
THIS MORNING...
...GALE WARNING NOW IN EFFECT UNTIL 6 AM EDT THURSDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM TO 6 PM EDT
THURSDAY...

* WHAT...For the Gale Warning, west to northwest winds 15 to 25 
  kt with gusts up to 35 kt and waves 2 to 4 ft expected. For the 
  first Small Craft Advisory, south winds 10 to 15 kt with gusts 
  up to 20 kt. For the second Small Craft Advisory, west winds 10 
  to 20 kt with gusts up to 30 kt expected.

* WHERE...Tidal Potomac River from Indian Head MD to Smith Point 
  VA, and Chesapeake Bay and adjoining estuaries north of Smith 
  Point VA.

* WHEN...For the Gale Warning, until 6 AM EDT Thursday. For the 
  Small Craft Advisory, until 6 AM EDT early this morning. For 
  the Small Craft Advisory, from 6 AM to 6 PM EDT Thursday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ535-211615-
/O.NEW.KLWX.SC.Y.0084.210421T0801Z-210421T1000Z/
/O.EXT.KLWX.GL.W.0014.210421T1000Z-210422T1000Z/
/O.UPG.KLWX.GL.A.0001.210422T0600Z-210422T2200Z/
/O.NEW.KLWX.SC.Y.0085.210422T1000Z-210422T2200Z/
Tidal Potomac from Key Bridge to Indian Head MD-
401 AM EDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...
...GALE WARNING NOW IN EFFECT UNTIL 6 AM EDT THURSDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM TO 6 PM EDT
THURSDAY...

* WHAT...For the Gale Warning, west to northwest winds 15 to 25 kt
  with gusts up to 35 kt expected. For the first Small Craft
  Advisory, south to southwest winds 10 to 15 kt with gusts up to
  20 kt. For the second Small Craft Advisory, west winds 10 to 20
  kt with gusts up to 30 kt expected.

* WHERE...Tidal Potomac from Key Bridge to Indian Head MD.

* WHEN...For the Gale Warning, until 6 AM EDT Thursday. For the 
  Small Craft Advisory, until 6 AM EDT early this morning. For 
  the Small Craft Advisory, from 6 AM to 6 PM EDT Thursday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

062 
WHUS71 KLWX 210957
MWWLWX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
557 AM EDT Wed Apr 21 2021

ANZ530>534-536>543-211800-
/O.EXP.KLWX.SC.Y.0083.000000T0000Z-210421T1000Z/
/O.CON.KLWX.GL.W.0014.210421T1000Z-210422T1000Z/
/O.CON.KLWX.SC.Y.0085.210422T1000Z-210422T2200Z/
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 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-
557 AM EDT Wed Apr 21 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 6 AM EDT THURSDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 6 AM TO 6 PM EDT
THURSDAY...

* WHAT...For the Gale Warning, west to northwest winds 15 to 25 kt
  with gusts up to 35 kt and waves 2 to 4 ft expected. For the
  Small Craft Advisory, west to northwest winds 10 to 20 kt with 
  gusts up to 30 kt expected.

* WHERE...Tidal Potomac River from Indian Head MD to Smith Point 
  VA, and Chesapeake Bay and adjoining estuaries north of Smith 
  Point VA.

* WHEN...For the Gale Warning, until 6 AM EDT Thursday. For the 
  Small Craft Advisory, from 6 AM to 6 PM EDT Thursday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ535-211800-
/O.EXP.KLWX.SC.Y.0084.000000T0000Z-210421T1000Z/
/O.CON.KLWX.GL.W.0014.210421T1000Z-210422T1000Z/
/O.CON.KLWX.SC.Y.0085.210422T1000Z-210422T2200Z/
Tidal Potomac from Key Bridge to Indian Head MD-
557 AM EDT Wed Apr 21 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 6 AM EDT THURSDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 6 AM TO 6 PM EDT
THURSDAY...

* WHAT...For the Gale Warning, west to northwest winds 15 to 25 kt
  with gusts up to 35 kt expected. For the Small Craft Advisory,
  west to northwest winds 10 to 20 kt with gusts up to 30 kt 
  expected.

* WHERE...Tidal Potomac from Key Bridge to Indian Head MD.

* WHEN...For the Gale Warning, until 6 AM EDT Thursday. For the 
  Small Craft Advisory, from 6 AM to 6 PM EDT Thursday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
326 PM EDT Mon Apr 19 2021

.SYNOPSIS...
Low pressure will move off the Carolina coast this evening, then
high pressure will build along the Mid-Atlantic coast tonight
and Tuesday. A strong cold front will cross the area Wednesday.
Canadian high pressure will build to from the west Wednesday
night through Thursday before settling to the south late in the
week. Low pressure may affect the area over the weekend.

&&

.NEAR TERM /UNTIL 6 AM TUESDAY MORNING/...
Shortwave trough is generally along the I-95 corridor this
afternoon with surface low pressure developing east of Cape
Hatteras. Shield of rain associated with these systems is
exiting southern Maryland. Clearing has been briefly taking
place in its wake, but then cumulus quickly develop due to
favorable lapse rates and lingering mid level moisture. Main
question for the remainder of the afternoon is whether any
showers develop in this zone of weak instability (a surface
trough could also assist). So far, the showers have been
confined to Pennsylvania, but some models do show them
developing farther south. Therefore, have some lingering PoPs
through roughly sunset. Not out of the question there could be a
few lightning strikes if the showers develop, but strong storms
are not expected.

Dry conditions are expected everywhere tonight as subsidence
takes over behind the departing the disturbance. There may be
some fog, especially in areas that received heavier rainfall
(central VA to southern MD). However, most guidance isn't
latching on to fog just yet. Min temps will be in the 40s for
most places tonight to near 50 in downtown Washington and
Baltimore. Some upper 30s are possible in colder valleys.

&&

.SHORT TERM /6 AM TUESDAY MORNING THROUGH WEDNESDAY NIGHT/...
High pressure will remain off the Mid-Atlantic Coast Tuesday
while a trough digs over the central CONUS and Midwest along
with its associated cold front. A southerly flow between these
systems will develop by afternoon. Along with what should be a
fair amount of sunshine, temperatures should reach the 70s in
many locations. Moisture return could result in an isolated
shower over the Appalachians by late afternoon, but most areas
will be dry.

The cold front will approach Tuesday night as the upper-level
trough strengthens a bit. Most of Tuesday night should be dry,
but a few showers are possible, especially across western areas
closer to the front. Tuesday night will turn out mild due to the
southerly flow ahead of the approaching cold front.

The potent upper-level trough will dig overhead Wednesday
through Wednesday night. The surface low associated with this
will strengthen and track to our north while a cold front passes
through our area Wednesday before moving offshore Wednesday
evening. Showers will likely develop along the front (with a
possible minimum in the immediate lee of the Appalachians during
the morning), with some embedded thunderstorms possible as the
front encounters higher instability east of the Blue Ridge
during the midday hours. The forcing along the front will be
strong, so a line of gusty showers are possible with the frontal
passage mainly east of the Blue Ridge and Catoctin Mountains,
and the highest chance will be closer to the Baltimore metro
where forcing/instability will ultimately be highest. The severe
weather threat will be dependent on the timing of the front.
Currently, the timing is fairly fast, resulting in limited
instability. However, subtle changes could result in a greater
risk of strong/damaging winds with the showers and storms, so
stay tuned. Regardless of precipitation, strong west to
northwest winds will follow the frontal passage, and
temperatures will start falling. Frequent gusts around 25 to 40
mph are expected, and it's not out of the question a Wind
Advisory could be needed for some areas. Any lingering
precipitation along/west of the Allegheny Front could start
mixing with/changing over to snow. Accumulations will be
minimal, however.

The upper-level trough will remain overhead Wednesday night
allowing for more blustery and chilly conditions for this time
of year. A few mountain snow showers are possible, and isolated
snow or rain shower may even spill east of the mountain. Any
accumulation should be light due to limited moisture and
confined to the ridges. Min temperatures will end up in the
lower and middle 30s for most places with 20s in the mountains.
Freeze headlines may be warranted.

&&

.LONG TERM /THURSDAY THROUGH MONDAY/...
An anomalous upper-level trough will linger overhead most of
Thursday before finally moving offshore Thursday night. Forecast
850 mb temps are -5 to -9 C much of Thursday. At the surface, this
translates to highs in the 50s for much of the region, with
upper 30s and low 40s across the higher terrain. The well below
normal April temperatures coupled with blustery WNW winds will make
it feel like late February or early March. A few lingering upslope
snow showers are possible Thursday morning across the higher ridges
of the Allegheny Front.

Temperatures rebound closer to average Friday due to a return flow
as high pressure builds to the south. Friday should remain dry.
Remaining seasonable on Saturday as the region of high pressure
moves offshore.

The next system moves in Saturday night as an upper-level trough
swings east into the Great Lakes. Ensemble guidance is in agreement
with a region of low pressure forming ahead of the trough and moving
either over or just south of the region Saturday night into Sunday.
This system could be one of the bigger rain producers in recent
weeks with ensemble guidance showing 0.50-1.00" areawide. The exact
track of the low will ultimately determine QPF amounts, but there is
some Gulf moisture to work with. Do not currently anticipate
widespread flooding issues due to preceding dry conditions.
Strong winds are also possible with this system. Temperatures
will not decrease behind this system as much as the
Wednesday/Thursday system due to the Pacific roots of this
system.

&&

.AVIATION /19Z MONDAY THROUGH SATURDAY/...
Low pressure is moving off the Carolina coast while a surface
trough axis approaches from the west. While flight conditions
will be VFR (though with some SCT to BKN stratocumulus), wind
direction could be quite variable this afternoon and evening.
Will also have to be mindful of isolated to scattered showers
developing in the trough axis. The highest probabilities for
this seem to be in the vicinity of IAD, but can't rule it out
elsewhere. Thunder can't be ruled out, but is a very low chance.

VFR conditions are expected most of the time tonight through
Tuesday night. However, low clouds and fog cannot be ruled out
tonight, especially at DCA/BWI/MTN. Hinted at this with a FEW
group, but most guidance is not explicitly predicting
this...it's mainly from a conceptual standpoint. Light winds
tonight will become southerly by Tuesday afternoon.

A strong cold front will pass through Wednesday, likely bringing
some showers and perhaps even a thunderstorm (best chance across
the I-95 corridor). Gusty winds are expected behind the cold
front later Wednesday into Wednesday night. Frequent gusts of 25
to 35 knots are expected during this time.

VFR conditions at the terminals Thursday and Friday with a gusty
westerly wind.

&&

.MARINE...
Low pressure is moving off the Carolina this afternoon. SCA is
in effect for the southern waters south of Drum Point and south
of Cobb Island due to northerly flow around the low.

The gradient will weaken for tonight through Tuesday, but winds
should pick up out of the southwest Tuesday night into
Wednesday. An SCA will likely be needed for portions of the
waters during this time. Gusty west to northwest winds are
expected behind a strong cold front Wednesday afternoon into
Wednesday night and a Gale Warning may be needed for portions of
the waters during this time. There's also potential for a line
of gusty showers/isolated thunderstorms around midday Wednesday
with the cold front.

SCA winds are likely Thursday due to the strong westerly flow,
though a Gale Warning cannot be ruled out. SCA conditions could last
into Friday as a weaker, but still gusty southerly wind develops.

&&

.TIDES/COASTAL FLOODING...
Anomalies are expected to remain around a foot above normal at
times through early Wednesday. Water levels could reach caution
stages for sensitive areas with the high tide cycles Tuesday and
Wednesday mornings. Minor flooding cannot be ruled out, but
confidence is low due to the light flow.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...None.
VA...None.
WV...None.
MARINE...Small Craft Advisory until 6 PM EDT this evening for ANZ534-
     537-543.

&&

SYNOPSIS...ADS
NEAR TERM...ADS
SHORT TERM...ADS
LONG TERM...CPB
AVIATION...ADS/CPB
MARINE...ADS/CPB
TIDES/COASTAL FLOODING...ADS

Hazardous Weather Outlook
National Weather Service Baltimore MD/Washington DC
323 PM EDT Mon Apr 19 2021

ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508-
VAZ052>057-201930-
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-District of Columbia-Cecil-Southern Baltimore-
Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-
Central and Southeast Montgomery-Central and Southeast Howard-
Southeast Harford-Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-
King George-
323 PM EDT Mon Apr 19 2021

This Hazardous Weather Outlook is for the Maryland portion of the
Chesapeake Bay, Tidal Potomac River, and I-95 corridor through
central Maryland, northern Virginia, and District of Columbia.

.DAY ONE...Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

A Gale Watch is in effect for the waters Wednesday afternoon
through Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MDZ003>006-503-505-507-VAZ025>031-036>040-050-051-501-502-505>508-
WVZ050>053-055-201930-
Washington-Frederick MD-Carroll-Northern Baltimore-
Northwest Montgomery-Northwest Howard-Northwest Harford-Augusta-
Rockingham-Shenandoah-Frederick VA-Page-Warren-Clarke-Nelson-
Albemarle-Greene-Madison-Rappahannock-Orange-Culpeper-
Northern Fauquier-Southern Fauquier-Western Loudoun-
Eastern Loudoun-Northern Virginia Blue Ridge-
Central Virginia Blue Ridge-Hampshire-Morgan-Berkeley-Jefferson-
Hardy-
323 PM EDT Mon Apr 19 2021

This Hazardous Weather Outlook is for portions of eastern West
Virginia, northern and central Virginia, and central and western
Maryland.

.DAY ONE...Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Frost or freeze conditions are possible west of Interstate 95
Wednesday night into Thursday morning, and again Thursday night
into Friday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MDZ001-501-502-VAZ503-504-WVZ501>506-201930-
Garrett-Extreme Western Allegany-Central and Eastern Allegany-
Western Highland-Eastern Highland-Western Grant-Eastern Grant-
Western Mineral-Eastern Mineral-Western Pendleton-
Eastern Pendleton-
323 PM EDT Mon Apr 19 2021

This Hazardous Weather Outlook is for the Allegheny Front
counties in western Maryland, eastern West Virginia, and Highland
County Virginia.

.DAY ONE...Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.