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Maryland, St. Marys

Severe Thunderstorm Watch

Statement as of 4:03 PM EDT on August 18, 2017

Expires 9:00 PM EDT on August 18, 2017


Severe Thunderstorm Watch 455 remains in effect until 900 PM EDT

MD
. Maryland counties included are

Anne Arundel Baltimore Calvert
Caroline Carroll Cecil
Charles Dorchester Frederick
Harford Howard Kent
Montgomery Prince Georges Queen Anne's
St. Marys Somerset Talbot
Washington Wicomico Worcester




Maryland independent cities included are

Baltimore City




Flash Flood Watch, Coastal Flood Advisory

Statement as of 12:35 PM EDT on August 18, 2017

Expires 3:00 AM EDT on August 19, 2017


... Flash Flood Watch in effect through late tonight...

The National Weather Service in Sterling Virginia has issued a

* Flash Flood Watch for portions of Maryland, the District of
Columbia, and Virginia, including the following areas, in
Maryland, Anne Arundel, Calvert, Carroll, central and
southeast Howard, central and southeast Montgomery, Charles,
Frederick MD, northern Baltimore, northwest Harford, northwest
Howard, northwest Montgomery, Prince Georges, southeast
Harford, southern Baltimore, and St. Marys. The District of
Columbia. In Virginia, Arlington/Falls Church/Alexandria,
Culpeper, eastern Loudoun, Fairfax, King George, Madison,
northern Fauquier, Orange, Prince William/Manassas/Manassas
Park, Rappahannock, southern Fauquier, Spotsylvania, Stafford,
and western Loudoun.

* Through late tonight

* thunderstorms with heavy rainfall are expected across the region
this afternoon and evening. The potential for training
thunderstorms exists, which could result in several inches of
rain in one to two hours. Soils are already very moist, meaning
most of this rain would rapidly run off.

* Runoff from excessive rainfall may cause rapid rises of water
in low-lying and poor drainage areas as well as streams and
creeks, resulting in flash flooding. Urban areas will be most
susceptible.

Precautionary/preparedness actions...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should flash flood warnings be issued.



Rcm



1058 am EDT Fri Aug 18 2017

... Coastal flood advisory in effect until 3 am EDT Saturday...

The National Weather Service in Baltimore MD/Washington DC has
issued a coastal flood advisory, which is in effect until 3 am
EDT Saturday.

* Location... St. Marys County.

* Tidal departure... 1 to 1.5 feet above normal.

* Timing... around the time of high tide. High tides at Piney Point
are at 12:02 PM and 12:22 am. High tides at Point Lookout are at
10:44 am and 11:38 PM.

* 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 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.



Straits Point MD
MLLW categories - minor 2.7 ft, moderate 3.5 ft, major 5.0 ft
mhhw categories - minor 1.1 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
-------- --------- --------- --------- ------- --------
18/11 am 2.7 1.1 1.2 1.0 minor
19/12 am 3.0 1.4 1.2 1.0 minor
19/01 PM 2.6 1.0 1.0 1.0 none
20/01 am 2.8 1.2 1.0 0.5 minor
20/01 PM 2.7 1.1 1.1 0.5 minor
21/02 am 2.8 1.2 1.0 0.5 minor

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.




Flash Flood Watch, Coastal Flood Advisory

Statement as of 12:35 PM EDT on August 18, 2017

Expires 3:00 AM EDT on August 19, 2017


... Flash Flood Watch in effect through late tonight...

The National Weather Service in Sterling Virginia has issued a

* Flash Flood Watch for portions of Maryland, the District of
Columbia, and Virginia, including the following areas, in
Maryland, Anne Arundel, Calvert, Carroll, central and
southeast Howard, central and southeast Montgomery, Charles,
Frederick MD, northern Baltimore, northwest Harford, northwest
Howard, northwest Montgomery, Prince Georges, southeast
Harford, southern Baltimore, and St. Marys. The District of
Columbia. In Virginia, Arlington/Falls Church/Alexandria,
Culpeper, eastern Loudoun, Fairfax, King George, Madison,
northern Fauquier, Orange, Prince William/Manassas/Manassas
Park, Rappahannock, southern Fauquier, Spotsylvania, Stafford,
and western Loudoun.

* Through late tonight

* thunderstorms with heavy rainfall are expected across the region
this afternoon and evening. The potential for training
thunderstorms exists, which could result in several inches of
rain in one to two hours. Soils are already very moist, meaning
most of this rain would rapidly run off.

* Runoff from excessive rainfall may cause rapid rises of water
in low-lying and poor drainage areas as well as streams and
creeks, resulting in flash flooding. Urban areas will be most
susceptible.

Precautionary/preparedness actions...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should flash flood warnings be issued.



Rcm



1058 am EDT Fri Aug 18 2017

... Coastal flood advisory in effect until 3 am EDT Saturday...

The National Weather Service in Baltimore MD/Washington DC has
issued a coastal flood advisory, which is in effect until 3 am
EDT Saturday.

* Location... St. Marys County.

* Tidal departure... 1 to 1.5 feet above normal.

* Timing... around the time of high tide. High tides at Piney Point
are at 12:02 PM and 12:22 am. High tides at Point Lookout are at
10:44 am and 11:38 PM.

* 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 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.



Straits Point MD
MLLW categories - minor 2.7 ft, moderate 3.5 ft, major 5.0 ft
mhhw categories - minor 1.1 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
-------- --------- --------- --------- ------- --------
18/11 am 2.7 1.1 1.2 1.0 minor
19/12 am 3.0 1.4 1.2 1.0 minor
19/01 PM 2.6 1.0 1.0 1.0 none
20/01 am 2.8 1.2 1.0 0.5 minor
20/01 PM 2.7 1.1 1.1 0.5 minor
21/02 am 2.8 1.2 1.0 0.5 minor

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.




Weather Severe Map
Alaska - Areal Flood Advisory , High Surf Advisory , Record Report
Arizona - Air Quality Alert
Arkansas - Flood Warning , Heat Advisory , Record Report , Public Information Statement
California - Beach Hazard Statement , Record Report
Colorado -
Connecticut - Severe Thunderstorm Watch , Flash Flood Watch , Public Information Statement
Delaware - Severe Thunderstorm Watch , Flash Flood Watch , Public Information Statement
District of Columbia - Severe Thunderstorm Watch , Flash Flood Watch , Heat Advisory
Florida - Coastal Hazard Statement , Special Statement , Record Report , Public Information Statement , Public Information Statement
Georgia - Special Statement , Record Report
Hawaii - Special Statement , Record Report
Idaho - Fire Weather Warning
Illinois - Public Information Statement
Indiana - Beach Hazard Statement , Record Report
Iowa - Public Information Statement
Louisiana - Flood Warning , Heat Advisory , Record Report
Maryland - Severe Thunderstorm Watch , Flash Flood Watch, Coastal Flood Advisory , Flash Flood Watch , Coastal Flood Advisory , Heat Advisory , Public Information Statement
Massachusetts - Severe Thunderstorm Watch , Areal Flood Warning , Special Statement
Michigan - Beach Hazard Statement , Record Report , Public Information Statement , Public Information Statement
Minnesota - Special Statement , Public Information Statement , Public Information Statement
Mississippi - Flood Warning , Heat Advisory
Missouri - Severe Thunderstorm Warning , Public Information Statement
Montana - Fire Weather Warning , Air Quality Alert
Nebraska - Flood Warning, Areal Flood Warning
Nevada -
New Jersey - Severe Thunderstorm Watch , Flash Flood Watch , Public Information Statement
New Mexico -
New York - Severe Thunderstorm Watch , Flash Flood Watch , Areal Flood Advisory , Beach Hazard Statement , Special Statement , Public Information Statement , Public Information Statement
North Carolina - Coastal Flood Advisory , Heat Advisory , Special Statement , Record Report
North Dakota - Fire Weather Watch
Ohio - Beach Hazard Statement
Oklahoma - Flood Warning
Oregon - Fire Weather Warning , Air Quality Alert
Pennsylvania - Severe Thunderstorm Watch , Severe Thunderstorm Watch , Severe Thunderstorm Warning , Flash Flood Warning , Flash Flood Watch , Areal Flood Advisory, Flash Flood Watch , Areal Flood Advisory , Flash Flood Watch, Areal Flood Advisory , Special Statement , Beach Hazard Statement , Public Information Statement
Puerto Rico - Coastal Hazard Statement
South Carolina - Heat Advisory
South Dakota - Severe Thunderstorm Warning
Texas - Flood Warning , Areal Flood Advisory , Heat Advisory , Special Statement , Record Report
Virgin Islands - Coastal Hazard Statement
Virginia - Severe Thunderstorm Watch , Flash Flood Watch , Heat Advisory , Special Statement
Washington - Fire Weather Warning
West Virginia - Severe Thunderstorm Watch
Wisconsin - Public Information Statement
- Severe Thunderstorm Watch
- Small Craft Advisory

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