Gale Warning 14, NWS Baltimore/Washington

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.

&&

$$

710 
WHUS71 KLWX 211808
MWWLWX

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

ANZ530>543-220500-
/O.CON.KLWX.GL.W.0014.000000T0000Z-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 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-
208 PM 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, northwest winds 15 to 25 kt with 
  gusts up to 35 kt and waves 2 to 4 ft. For the Small Craft 
  Advisory, west winds 15 to 20 kt with gusts up to 30 kt 
  expected.

* WHERE...Tidal Potomac River from Key Bridge 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.

&&

$$

820 
WHUS71 KLWX 220140
MWWLWX

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

ANZ530>543-220945-
/O.CON.KLWX.GL.W.0014.000000T0000Z-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 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-
940 PM 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, northwest winds 15 to 25 kt with 
  gusts up to 35 kt and waves 2 to 4 ft. For the Small Craft 
  Advisory, west winds 15 to 20 kt with gusts up to 30 kt 
  expected.

* WHERE...Tidal Potomac River from Key Bridge 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.

&&

$$

776 
WHUS71 KLWX 220255
MWWLWX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
1055 PM EDT Wed Apr 21 2021

ANZ530>532-535-536-538>540-221100-
/O.CAN.KLWX.GL.W.0014.000000T0000Z-210422T1000Z/
/O.EXT.KLWX.SC.Y.0085.210422T0255Z-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-
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-
1055 PM EDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM EDT THURSDAY...
...GALE WARNING IS CANCELLED...

* WHAT...West winds 10 to 20 kt with gusts up to 30 kt.

* WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD, 
  Chesapeake Bay north of North Beach MD, Chester River to 
  Queenstown MD, Patapsco River including Baltimore Harbor, and 
  Eastern Bay.

* WHEN...Until 6 PM EDT Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ533-534-537-541>543-221100-
/O.CON.KLWX.GL.W.0014.000000T0000Z-210422T1000Z/
/O.CON.KLWX.SC.Y.0085.210422T1000Z-210422T2200Z/
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-
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-
1055 PM 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, northwest winds 15 to 25 kt with 
  gusts up to 35 kt and waves 2 to 4 ft. For the Small Craft 
  Advisory, west winds 15 to 20 kt with gusts up to 30 kt 
  expected.

* WHERE...Chesapeake Bay from North Beach MD to Smith Point VA, 
  Patuxent River to Broomes Island MD, Tangier Sound and the 
  inland waters surrounding Bloodsworth Island, Choptank River 
  to Cambridge MD and the Little Choptank River, and Tidal 
  Potomac from Cobb Island MD to 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.

&&

$$

163 
WHUS71 KLWX 220542
MWWLWX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
142 AM EDT Thu Apr 22 2021

ANZ533-534-537-541>543-222030-
/O.CON.KLWX.GL.W.0014.000000T0000Z-210422T1000Z/
/O.CON.KLWX.SC.Y.0085.210422T1000Z-210422T2200Z/
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-
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-
142 AM EDT Thu Apr 22 2021

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

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

* WHERE...Chesapeake Bay from North Beach MD to Smith Point VA, 
  Patuxent River to Broomes Island MD, Tangier Sound and the 
  inland waters surrounding Bloodsworth Island, Choptank River 
  to Cambridge MD and the Little Choptank River, and Tidal 
  Potomac from Cobb Island MD to Smith Point VA.

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

* 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>532-535-536-538>540-222030-
/O.CON.KLWX.SC.Y.0085.000000T0000Z-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-
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-
142 AM EDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM EDT THIS
EVENING...

* WHAT...West winds 10 to 20 kt with gusts up to 30 kt.

* WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD, 
  Chesapeake Bay north of North Beach MD, Chester River to 
  Queenstown MD, Patapsco River including Baltimore Harbor, and 
  Eastern Bay.

* WHEN...Until 6 PM EDT this evening.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

002 
WHUS71 KLWX 220658
MWWLWX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
258 AM EDT Thu Apr 22 2021

ANZ533-534-537-541>543-221500-
/O.CON.KLWX.GL.W.0014.000000T0000Z-210422T1000Z/
/O.EXT.KLWX.SC.Y.0085.210422T1000Z-210423T1000Z/
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-
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-
258 AM EDT Thu Apr 22 2021

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

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

* WHERE...Chesapeake Bay from North Beach MD to Smith Point VA, 
  Patuxent River to Broomes Island MD, Tangier Sound and the 
  inland waters surrounding Bloodsworth Island, Choptank River 
  to Cambridge MD and the Little Choptank River, and Tidal 
  Potomac from Cobb Island MD to Smith Point VA.

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

* 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>532-536-538>540-221500-
/O.EXT.KLWX.SC.Y.0085.000000T0000Z-210423T1000Z/
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-
Tidal Potomac from Indian Head to Cobb Island MD-
Patapsco River including Baltimore Harbor-
Chester River to Queenstown MD-Eastern Bay-
258 AM EDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM EDT FRIDAY...

* WHAT...West winds 15 to 20 kt with gusts up to 30 kt, decreasing
  to 10 to 15 kt with gusts to 20 kt overnight.

* WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD, 
  Chesapeake Bay north of North Beach MD, Chester River to 
  Queenstown MD, Patapsco River including Baltimore Harbor, and 
  Eastern Bay.

* WHEN...Until 6 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ535-221500-
/O.EXT.KLWX.SC.Y.0085.000000T0000Z-210423T0400Z/
Tidal Potomac from Key Bridge to Indian Head MD-
258 AM EDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL MIDNIGHT EDT
TONIGHT...

* WHAT...West winds 15 to 20 kt with gusts up to 30 kt, decreasing
  to 10 to 15 kt with gusts to 20 kt this evening.

* WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD, 
  Chesapeake Bay north of North Beach MD, Chester River to 
  Queenstown MD, Patapsco River including Baltimore Harbor, and 
  Eastern Bay.

* WHEN...Until midnight EDT tonight.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

615 
WHUS71 KLWX 221012
MWWLWX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
612 AM EDT Thu Apr 22 2021

ANZ533-534-537-541>543-221815-
/O.EXP.KLWX.GL.W.0014.000000T0000Z-210422T1000Z/
/O.CON.KLWX.SC.Y.0085.000000T0000Z-210423T1000Z/
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-
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-
612 AM EDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT FRIDAY...
...GALE WARNING HAS EXPIRED...

* WHAT...West winds 15 to 20 kt with gusts up to 30 kt, 
  decreasing to 10 to 15 kt with gusts to 20 kt overnight.

* WHERE...Chesapeake Bay from North Beach MD to Smith Point VA, 
  Patuxent River to Broomes Island MD, Tangier Sound and the 
  inland waters surrounding Bloodsworth Island, Choptank River 
  to Cambridge MD and the Little Choptank River, and Tidal 
  Potomac from Cobb Island MD to Smith Point VA.

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

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ530>532-536-538>540-221815-
/O.CON.KLWX.SC.Y.0085.000000T0000Z-210423T1000Z/
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-
Tidal Potomac from Indian Head to Cobb Island MD-
Patapsco River including Baltimore Harbor-
Chester River to Queenstown MD-Eastern Bay-
612 AM EDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT FRIDAY...

* WHAT...West winds 15 to 20 kt with gusts up to 30 kt, 
  decreasing to 10 to 15 kt with gusts to 20 kt overnight.

* WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD, 
  Chesapeake Bay north of North Beach MD, Chester River to 
  Queenstown MD, Patapsco River including Baltimore Harbor, and 
  Eastern Bay.

* WHEN...Until 6 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ535-221815-
/O.CON.KLWX.SC.Y.0085.000000T0000Z-210423T0400Z/
Tidal Potomac from Key Bridge to Indian Head MD-
612 AM EDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT
TONIGHT...

* WHAT...West winds 15 to 20 kt with gusts up to 30 kt, 
  decreasing to 10 to 15 kt with gusts to 20 kt this evening.

* WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD, 
  Chesapeake Bay north of North Beach MD, Chester River to 
  Queenstown MD, Patapsco River including Baltimore Harbor, and 
  Eastern Bay.

* WHEN...Until midnight EDT tonight.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
1017 AM EDT Tue Apr 20 2021

.SYNOPSIS...
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 our 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 /THROUGH TONIGHT/...
High pressure remains near the Carolina coast this morning. A
frontal zone stretches from the Great Lakes to the Ohio Valley,
and low pressure is expected to develop along this front by this
evening as an upper trough approaches. Between these systems, a
southerly flow along with sunshine will allow for a warm
afternoon. Max temps will be in the 70s for most areas. Did
forecast toward the warmer side of guidance due to the sunshine
and deep mixing layer that is expected to develop. This forecast
seems on track as temperatures are rapidly rising into the 60s
at 10 AM.

The southerly flow will advect some moisture this afternoon into
this evening, and there will be a surface trough over our west
and northwestern areas. Therefore, a few popup showers are
possible late this afternoon into this evening, mainly west of
the Blue Ridge and Catoctin Mountains. Current guidance seems to
be trending toward the evening time period, so may push these
PoPs back a little. Coverage should be isolated to scattered
since lift will be weak.

Low pressure will strengthen along the cold front to our north
and west tonight as a potent an upper-level trough begins to
dig through the Great Lakes and Midwest. A mild southerly flow
will continue over the area. A few showers are possible due to
the moisture advection and strengthening low-level wind field,
but coverage should be isolated to scattered and any
precipitation amounts will be light. Temps may hold in the 50s
for most areas with 40s in the mountains.

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/...
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
night. A few showers are likely/expected with the frontal
passage, with the highest confidence for precipitation being
east of the Blue Ridge and Catoctin Mountains as well as
along/west of the Allegheny Front. The forcing along the front
will be strong, so a line of gusty showers/scattered
thunderstorms are possible with the frontal passage mainly east
of the Blue Ridge and Catoctin Mountains. Latest guidance
continues to show limited instability, but steep low-level lapse
rates and stronger sheer profiles suggests that locally damaging
wind gusts are possible.

It will turn out blustery and sharply colder behind the cold
front Wednesday morning west of the Blue Ridge and Wednesday
afternoon east of the Blue Ridge. Gusty west to northwest winds
with frequent gusts around 25 to 40 mph are also expected. The
cold advection and upslope flow will bring some snow showers for
locations along and west of the Allegheny Front later Wednesday
morning and afternoon. Snow may coat the ground along the ridge
tops.

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 mountains. Any
accumulation should be light due to limited moisture and
confined to the ridges. However, it will turn out quite chilly
for this time of year with min temps dropping into the lower and
middle 30s for most places with 20s in the mountains. Freeze
headlines may be warranted.

The upper-level trough will remain overhead Thursday while low
pressure slowly tracks into the Canadian Maritimes. Gusty
northwest winds are expected and it will be quite chilly for
this time of year. A few snow showers are expected along/west of
the Allegheny Front and a rain/snow shower could spill east of
the mountains as well. Winds will diminish Thursday night as the
upper-level trough departs and high pressure builds nearby to
the south and west. More chilly conditions are expected and
frost/freeze headlines may be warranted.

&&

.LONG TERM /FRIDAY THROUGH MONDAY/...
Troughing will progress offshore on Friday, with zonal flow aloft
moving in. At the surface, high pressure will drift off the Carolina
coastline. Mostly sunny skies are anticipated, with temperatures in
the 60s.

A shortwave embedded in the southern stream will approach the area
from the southwest during the day on Saturday. As this disturbance
approaches, it will begin to feel the influence of a much broader
trough situated off to the north. Model guidance is in good
agreement that a surface low will develop in advance of the mid-
level shortwave embedded in the southern stream. However, there is
considerable spread with respect to the tilt of mid-level shortwave
as it interacts with the larger trough to the north, as well as the
resultant strength of the surface low. Nearly all solutions show a
soaking rainfall Saturday evening through Saturday night, but there
is substantial spread with respect to the strength of the surface
low and the resultant wind field in the system's wake on Sunday.
This isn't surprising given the differences with respect to the tilt
of the shortwave. Flooding is not expected to be an issue with dry
antecedent conditions and a fast moving storm. Severe weather isn't
expected to be an issue either, with nearly all guidance indicating
stable conditions as the low tracks either overhead or just to our
southeast.

Some showers could potentially linger for the first half of Sunday,
but improving conditions are expected Sunday afternoon as low
pressure pulls further off toward the northeast. Sunday should be at
a minimum a breezy day, with stronger winds possible depending on
the strength of the departing surface low. Mostly sunny skies are
expected on Monday as high pressure progresses in from the west.
Temperatures on both Sunday and Monday will be near to slightly
below normal, with highs in the mid-upper 60s.

&&

.AVIATION /14Z TUESDAY THROUGH SATURDAY/...
VFR conditions are expected for the rest of today through
tonight. An isolated shower is possible tonight, but most of the
time will be dry. A strong cold front will pass through
Wednesday, showers are expected along a possible thunderstorm.
The best chance for showers and a thunderstorm will be over the
eastern terminals. There is an isolated threat for damaging
winds with any thunderstorms that develop.

A wind shift from the south and southwest to the northwest will
accompany the frontal passage and gusts around 25 to 35 knots
are expected behind the boundary later Wednesday morning into
early afternoon.

Gusty winds will continue through Thursday (although winds may
diminish for a brief period late Wednesday night) before
diminishing Thursday night as high pressure builds nearby.

VFR conditions are expected Friday through the first half of
Saturday. Conditions may deteriorate to sub-VFR by later Saturday
afternoon into Saturday night as rain and low clouds move in.

&&

.MARINE...
A southerly flow will develop today and gradually strengthen. An
SCA is in effect this afternoon and evening for the middle and
lower portions of the Bay as well as the lower Tidal Potomac
River. The SCA expands to include all of the Bay overnight and
the middle Potomac River as well. An SCA will likely be needed
ahead of the cold front for all of the waters Wednesday
morning/midday.

The cold front will pass through the waters around midday, and
gusty northwest winds are expected behind the boundary. A Gale
Watch remains in effect for the waters Wednesday afternoon and
continues through Thursday. High pressure will build to the
south and west Thursday night, and winds will diminish, but an
SCA may still be needed for portions of the waters.

SCA level winds may linger through the day Friday. Winds will
become southerly on Saturday, and could approach SCA levels.

&&

.TIDES/COASTAL FLOODING...
An onshore flow will cause anomalies to increase through
tonight. However, the flow will be relatively light, so caution
stages are more likely, but minor flooding for sensitive areas
are possible around high tides later today into Wednesday
morning.

A strong offshore will cause anomalies to fall sharply later
Wednesday into Thursday.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...None.
VA...None.
WV...None.
MARINE...Gale Watch from Wednesday afternoon through Thursday afternoon
     for ANZ530>543.
     Small Craft Advisory from 3 PM this afternoon to 6 AM EDT
     Wednesday for ANZ531>534-537>541-543.
     Small Craft Advisory from midnight tonight to 6 AM EDT
     Wednesday for ANZ530-536-542.

&&

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

Hazardous Weather Outlook
National Weather Service Baltimore MD/Washington DC
510 AM EDT Tue Apr 20 2021

ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508-
VAZ052>057-211000-
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-
510 AM EDT Tue Apr 20 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...Today and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

There is an isolated threat for severe thunderstorms late
Wednesday morning through mid-afternoon with damaging winds being
the primary threat.

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

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed Wednesday.

MDZ003>006-503-505-507-VAZ025>031-036>040-050-051-501-502-505>508-
WVZ050>053-055-211000-
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-
510 AM EDT Tue Apr 20 2021

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

.DAY ONE...Today and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

There is an isolated threat for severe thunderstorms Wednesday
morning through early afternoon with damaging winds being the
primary threat. The best chance for a strong to severe storm will
be east of the Blue Ridge and Catoctin Mountains.

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 may be needed Wednesday.

MDZ001-501-502-VAZ503-504-WVZ501>506-211000-
Garrett-Extreme Western Allegany-Central and Eastern Allegany-
Western Highland-Eastern Highland-Western Grant-Eastern Grant-
Western Mineral-Eastern Mineral-Western Pendleton-
Eastern Pendleton-
510 AM EDT Tue Apr 20 2021

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

.DAY ONE...Today and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.