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4 products issued by NWS for: Mechanicsville MD
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Wind Chill Advisory

URGENT - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
344 AM EST Sun Jan 20 2019

DCZ001-MDZ005-006-011-013-014-016>018-503>508-VAZ025>031-036>040-
050>057-501-502-505>508-WVZ053-201645-
/O.NEW.KLWX.WC.Y.0001.190121T0300Z-190121T1600Z/
District of Columbia-Carroll-Northern Baltimore-
Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-
Calvert-Northwest Montgomery-Central and Southeast Montgomery-
Northwest Howard-Central and Southeast Howard-Northwest Harford-
Southeast Harford-Augusta-Rockingham-Shenandoah-Frederick VA-Page-
Warren-Clarke-Nelson-Albemarle-Greene-Madison-Rappahannock-Orange-
Culpeper-Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-
King George-Northern Fauquier-Southern Fauquier-Western Loudoun-
Eastern Loudoun-Northern Virginia Blue Ridge-
Central Virginia Blue Ridge-Jefferson-
344 AM EST Sun Jan 20 2019

...WIND CHILL ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 11 AM
EST MONDAY...

* WHAT...Very cold wind chills expected. Wind chills between 5 and
  15 below zero expected.

* WHERE...The District of Columbia, much of central and southern
  Maryland, central and northern Virginia including the Shenandoah
  Valley, and the eastern panhandle of West Virginia.

* WHEN...From 10 PM this evening to 11 AM EST Monday.

* ADDITIONAL DETAILS...The cold wind chills could result in
  hypothermia if precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frostbite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

&&

$$



Wind Advisory

URGENT - WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
330 AM EST Sun Jan 20 2019

DCZ001-MDZ004>006-011-013-014-016>018-503>508-VAZ040-051>054-501-
502-505-506-201630-
/O.CON.KLWX.WI.Y.0004.190120T1600Z-190121T0000Z/
District of Columbia-Frederick MD-Carroll-Northern Baltimore-
Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-
Calvert-Northwest Montgomery-Central and Southeast Montgomery-
Northwest Howard-Central and Southeast Howard-Northwest Harford-
Southeast Harford-Rappahannock-Culpeper-
Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Northern Fauquier-
Southern Fauquier-Western Loudoun-Eastern Loudoun-
Including the cities of Washington, Frederick, Ballenger Creek,
Eldersburg, Westminster, Reisterstown, Cockeysville, Baltimore,
Bowie, Suitland-Silver Hill, Clinton, College Park, Greenbelt,
Laurel, Camp Springs, Glen Burnie, Annapolis, Severn, South Gate,
Severna Park, Arnold, Odenton, St. Charles, Waldorf,
Lexington Park, California, Chesapeake Beach, Huntingtown,
Dunkirk, North Beach, Lusby, Prince Frederick, Germantown,
Damascus, Bethesda, Rockville, Gaithersburg, Silver Spring,
Lisbon, Columbia, Ellicott City, Jarrettsville, Aberdeen,
Culpeper, Dale City, Manassas, Woodbridge, Lake Ridge, Montclair,
Reston, Herndon, Annandale, Centreville, Chantilly, McLean,
Franconia, Arlington, Alexandria, Falls Church, Warrenton,
Turnbull, Purcellville, Leesburg, Ashburn, and Sterling
330 AM EST Sun Jan 20 2019

...WIND ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
7 PM EST THIS EVENING...

* TIMING...Midday through early evening today. Highest gusts will
  be during the afternoon.

* WINDS...Northwest 20 to 25 mph with gusts up to 50 mph.

* IMPACTS...Strong winds may blow down limbs, trees, and power
  lines. Scattered power outages are expected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 45 to 55 mph are expected.
Winds this strong can make driving difficult, especially for high
profile vehicles.

&&

$$



Coastal Flood Advisory

Coastal Hazard Message
National Weather Service Baltimore MD/Washington DC
110 AM EST Sun Jan 20 2019

MDZ017-201415-
/O.EXT.KLWX.CF.Y.0003.000000T0000Z-190120T2100Z/
St. Marys-
110 AM EST Sun Jan 20 2019

...COASTAL FLOOD ADVISORY NOW IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...

* LOCATIONS...Shoreline in St. Marys County.

* TIDAL DEPARTURE...Around 1.5 feet above normal.

* TIMING...Ongoing with the overnight high tide, and expected
  again around the midday Sunday high tide. The next high tide
  will be at 12:38 PM at Point Lookout, 1:18 PM at Piney Point,
  and 1:54 PM at Coltons Point.

* IMPACTS...Water is expected to go over a portion of the
  bulkhead near the Straits Point bridge, and also cover yards
  in the St Georges Creek and St Marys River areas. Minor
  shoreline inundation up to one foot above ground is possible
  elsewhere.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Coastal Flood Advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.

&&

Forecast tides are referenced to mean lower low water
(MLLW) and mean higher high water (MHHW) unless
otherwise noted. Time of high total tide is
approximate to nearest hour. Total tide combines the
normal tide and departure from normal. Flood impact
is based on the total tide and waves where applicable.

STRAITS POINT MD
MLLW Categories - Minor 3.0 ft, Moderate 3.5 ft, Major 5.0 ft
MHHW Categories - Minor 1.4 ft, Moderate 1.9 ft, Major 3.4 ft

             Total      Total    Departure
 Day/Time    Tide       Tide     from Norm   Waves    Flood
            ft MLLW    ft MHHW       ft       ft      Impact
 --------  ---------  ---------  ---------  -------  --------
 20/01 AM     3.1        1.5        1.9       2.0     Minor
 20/01 PM     3.3        1.7        1.8       2.0     Minor
 21/02 AM     1.4       -0.2        0.1       2.0      None
 21/02 PM     1.3       -0.3       -0.2       2.0      None
 22/02 AM     0.9       -0.7       -0.4       1.0      None
 22/03 PM     1.6       -0.0        0.1       0.5      None

&&

$$



Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Baltimore MD/Washington DC
724 PM EST Sat Jan 19 2019

ANZ530>543-DCZ001-MDZ011-013-014-016>018-508-VAZ052>057-201000-
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-Southern Baltimore-Prince Georges-
Anne Arundel-Charles-St. Marys-Calvert-Southeast Harford-
Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-
King George-
724 PM EST Sat Jan 19 2019

This Hazardous Weather Outlook is for the Maryland portion of the
Chesapeake Bay, Tidal Potomac River, and adjacent counties in
central Maryland and northern Virginia as well as the District of
Columbia.

.DAY ONE...Tonight

No hazardous weather is expected.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

A Wind Advisory is in effect for northern, central and southern
Maryland as well as portions of northern Virginia Sunday.

A Gale Warning is in effect for all waters on Sunday. Gale force
winds may continue into Monday.

Bitterly cold wind chills are likely Sunday night into Monday
morning. Wind chills below zero are possible during this time.

The combination of moderate to heavy rain, along with snowmelt and
ice melt, has the potential to produce flooding during the second
half of the upcoming week.

.SPOTTER INFORMATION STATEMENT...

Please relay significant weather reports to the National Weather
Service.

$$



U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
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