* WHAT...Up to one half foot of inundation above ground level
expected in low lying areas due to tidal flooding.

* WHERE...Shoreline in Southern Baltimore County and the city of
Baltimore.

* WHEN...From 1 AM to 6 AM EDT Friday, especially around the
time of high tide.

* IMPACTS...At 3.5 feet, flooding is occurring at the end of
Thames Street in Baltimore. Water covers the promenade in the
Inner Harbor in multiple locations. At 3.0 feet, water begins
encroaching upon yards in the Bowleys Quarters area.

* ADDITIONAL DETAILS...Tides one and a half to two feet above
normal. The next high tide at Fort McHenry Baltimore is at 2:24
PM and 3:36 AM.

* WHAT...Southeast winds 20 to 30 mph with gusts up to 50 to 55
mph expected.

* WHERE...Portions of central, north central, northeast,
northern and southern Maryland, The District of Columbia and
central and northern Virginia.

* WHEN...From 3 PM Tuesday to 1 AM EST Wednesday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.

* WHAT...Two to three feet of inundation above ground level
possible in low lying areas due to tidal flooding.

* WHERE...Southern Baltimore and Anne Arundel Counties.

* WHEN...From Tuesday afternoon through late Tuesday night,
especially around the time of high tide.

* IMPACTS...At 4.2 feet, the boardalk at Annapolis City Dock is
underwater. Floodwaters also are affecting numerous roads in
Annapolis and on the Naval Academy Campus, along with
structures throughout the neighboring area. At 5.0 feet,
several roads in downtown Baltimore are flooded, along with
the Pier 4 promenade on the east side, and much of the lower
Inner Harbor area. At 5.0 feet, significant flooding is
occurring in the Bowleys Quarters area with yards, roads, and
homes flooded.

* ADDITIONAL DETAILS...Tides up to 5 feet above normal. The next
high tide at Fort McHenry Baltimore is at 4:17 PM and 4:02 AM.
The next high tide at Annapolis U.S. Naval Academy is at 3:09 PM
and 2:14 AM.

* WHAT...Flooding caused by excessive rainfall continues to be
possible.

* WHERE...Portions of DC, including the following , District of
Columbia, Maryland, including the following areas, Anne Arundel,
Calvert, Carroll, Cecil, 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, St. Marys and
Washington, Virginia, including the following areas, Albemarle,
Arlington/Falls Church/Alexandria, Augusta, Central Virginia Blue
Ridge, Central and Southeast Prince William/Manassas/Manassas
Park, Clarke, Culpeper, Eastern Loudoun, Fairfax, Frederick VA,
Greene, King George, Madison, Nelson, Northern Fauquier, Northern
Virginia Blue Ridge, Northwest Prince William, Orange, Page,
Rappahannock, Rockingham, Shenandoah, Southern Fauquier,
Spotsylvania, Stafford, Warren and Western Loudoun, and panhandle
West Virginia, including the following areas, Berkeley, Jefferson
and Morgan.

* WHEN...From Tuesday afternoon through Wednesday morning.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Flooding may occur
in poor drainage and urban areas. Low-water crossings may be
flooded.

* ADDITIONAL DETAILS...
- A period of moderate to heavy rain is likely to overspread
the area Tuesday afternoon and evening. Rainfall totals of
two to three inches expected with localized amounts up to
four inches possible.
- Please visit weather.gov/safety/flood for flood safety and
preparedness information

* WHAT...Visibility one quarter mile or less in dense fog.

* WHERE...Cecil, Southern Baltimore, Anne Arundel, St. Marys,
Calvert and Southeast Harford Counties.

* WHEN...Until 10 AM EST Sunday.

* IMPACTS...Hazardous driving conditions due to low visibility.

Locally dense fog is now developing in many areas between the Blue
Ridge and the Interstate 95 corridor, as a steady light to
moderate rain begins to overspread the area. This is reducing
visibility to one mile or less. As the fog expands and thickens
tonight, expect Dense Fog Advisories to be issued.

Dense fog is hazardous if driving at high speeds. Be prepared for
rapidly changing visibility. Slow down, increase following
distance, and use low beam headlights when encountering dense fog.

* WHAT...Visibility one quarter mile or less in dense fog.

* WHERE...Portions of central, northeast and northern Maryland
and central, northern, northwest and western Virginia.

* WHEN...Until 11 AM EST this morning.

* IMPACTS...Hazardous driving conditions due to low visibility.

Elevated fire weather conditions are expected this afternoon across
northern and central Virginia, western, central, northeast, and
southern Maryland, eastern West Virginia, and the District of
Columbia. This risk covers all areas east of the Allegheny Front.
Relative humidity values are expected to drop back to around 25 to
35 percent this afternoon (lowest in the Shenandoah Valley). Winds
will be out of the northwest at 10 to 20 mph with gusts to around 25
mph in most locations, but locally higher along the Blue Ridge
Mountains (30 mph). 10-hour fuel moisture will be as low as 10
percent.

Residents and visitors are urged to exercise caution if handling
open flames or equipment that creates sparks. Also, dispose of
cigarette butts, matches, and other flammable items in appropriate
containers. Keep vehicles off of dry grass and obey local burn bans.
Most dry grasses, dead leaves, and other tree litter could easily
ignite and spread fire quickly.

Outdoor burning is strongly discouraged. For more information about
wildfire danger, burn restrictions, and wildfire prevention and
education, please visit your state's forestry or environmental
protection Website.

The Maryland Department of the Environment has issued a Code
ORANGE Air Quality Alert Friday for
the Baltimore City Metro and Annapolis region.

A Code Orange Air Quality Alert means that air pollution
concentrations within the region may become unhealthy for
sensitive groups. Sensitive groups include children, people
suffering from asthma, heart disease or other lung diseases and
the elderly. The effects of air pollution can be minimized by
avoiding strenuous activity or exercise outdoors.

For more information on ground-level ozone
and fine particles visit the web site
www.mde.maryland.gov/programs/air/AirQualityMonitoring/Pages/index.aspx.

* WHAT...For the first Excessive Heat Warning, dangerously hot
conditions with heat index values up to 111 expected. For the
second Excessive Heat Warning, dangerously hot conditions with
heat index values up to 111 expected.

* WHERE...Portions of central, northern and southern Maryland,
The District of Columbia and central and northern Virginia.

* WHEN...For the first Excessive Heat Warning, until 8 PM EDT
this evening. For the second Excessive Heat Warning, from noon
to 8 PM EDT Saturday.

* IMPACTS...Extreme heat and humidity will significantly
increase the potential for heat related illnesses,
particularly for those working or participating in outdoor
activities.