baltimoresun.com
Baltimore, Maryland

  National Weather Service:
Areal Flood Watch, Coastal Flood Watch
    

5-day forecast
Fri Sat Sun Mon Tue
Rain Rain Rain Chance of Rain Partly Cloudy
Rain Rain Rain Chance of Rain Partly Cloudy
54° | 49° 54° | 47° 52° | 41° 54° | 40° 56° | 40°



Current conditions
As of 11:54 AM EST
at Baltimore, Maryland

Light Rain
Temperature: 48°
Wind chill:43°
Wind: ENE 13 mph
Dewpoint: 47°
Humidity: 96%
Visibility: 1.2 miles
Forecast

As of 12:00 PM EST on March 12, 2010

This Afternoon...Periods of rain. Highs in the mid 50s. East winds around 15 mph with gusts up to 25 mph. Chance of rain near 100 percent.

Tonight...Rain. Rain may be heavy at times after midnight. Windy with lows in the upper 40s. East winds 15 to 20 mph with gusts up to 30 mph...becoming northeast 20 to 30 mph with gusts up to 40 mph after midnight. Chance of rain near 100 percent.

Saturday...Rain. Rain may be heavy at times. Breezy with highs in the mid 50s. East winds 20 to 25 mph with gusts up to 40 mph. Chance of rain near 100 percent.

Radar
Local radar » Loop
Regional radar » Loop

    Regional conditions
LocationConditionsTemp..
Frederick Light Rain 52°
Norfolk, Va. Mostly Cloudy 63°
Ocean City Light Rain 48°
Philadelphia Light Rain 46°
Richmond, Va. Overcast 61°
Washington, D.C. Overcast 52°
York Light Rain 46°

Almanac

Key: T = Trace of precipitation; MM = data not available
March 12, 2010
Normal high:52° Record high:86° (1990)
Normal low:33° Record low:12° (1900)
Sunrise:6:22 AM Moon Rise: 4:38 AM
Sunset:6:10 PM Moon Set: 3:23 PM
Complete weather almanac
Detailed History and Climate

Areal Flood Watch, Coastal Flood Watch
Issued by the National Weather Service at 11:11 am EST on March 12, 2010


... Flood Watch remains in effect through Saturday evening...

The Flood Watch continues for

* portions of Maryland... the District of Columbia... Virginia and
northeast West Virginia... including the following areas... in
Maryland... Anne Arundel... Calvert... Carroll... Charles...
Frederick MD... Harford... Howard... Montgomery... northern
Baltimore... Prince Georges... southern Baltimore... St. Marys
and Washington. The District of Columbia. In Virginia...
Albemarle... Arlington/Falls Church/Alexandria... Augusta...
Clarke... Culpeper... Fairfax... Frederick VA... Greene... King
George... Loudoun... Madison... Nelson... northern Fauquier...
Orange... Page... Prince William/Manassas/Manassas Park...
Rappahannock... Rockingham... Shenandoah... southern Fauquier...
Spotsylvania... Stafford and Warren. In northeast West
Virginia... Berkeley... Hampshire... Hardy... Jefferson and Morgan.

* Through Saturday evening

* low pressure will bring periods of rain through Saturday
night. The heaviest rain is expected to occur Friday night and
Saturday. Widespread rainfall totals of 2 to 4 inches can be
expected... with locally higher amounts.

* These rainfall amounts will bring the risk of flooding for
small streams... creeks and urban areas this afternoon through
Saturday. Flooding of the slower responding rivers may also
occur beginning Saturday evening.

Precautionary/preparedness actions...

A Flood Watch means there is a potential for flooding based on
current forecasts.

Monitor later forecasts and be alert for possible flood warnings.
Those living in areas prone to flooding should be prepared to
take action should flooding develop.





1102 am EST Fri Mar 12 2010

... Coastal Flood Watch in effect from 6 PM EST this evening
through Saturday afternoon...

The National Weather Service in Baltimore MD/Washington has
issued a coastal Flood Watch... which is in effect from 6 PM EST
this evening through Saturday afternoon.

Strong easterly winds will develop tonight and persist through the
day Saturday. These winds will hinder the normal tidal cycle from
emptying into the ocean as normal. The higher than normal
tides... the approaching new moon... and high water levels in the
Potomac that will develop as the result of heavy rain and snowmelt
will cause the potential for coastal flooding after midnight tonight
and Saturday.

Much of the upper Potomac River is expected to be in flood from
Saturday through Monday. The fresh water coming downstream will
likely add to the coastal flood threat for Washington DC and
Alexandria through at least Monday.

Emergency managers and people with interest on the Potomac River
and the western shore of the Chesapeake Bay should begin to
prepare for potential coastal flooding.

Here are the times of the next high tides
for a few locations from north to south...
on the Chesapeake Bay...
Bowley Bar... 5:55 PM and 5:38 am...
Havre de Grace... 8:17 PM and 8:00 am...
Fort McHenry Baltimore... 5:04 PM and 4:47 am...
Annapolis U.S. Naval Academy... 3:34 PM and 3:17 am...
Solomons Island... 12:26 PM and 12:09 am...
Point Lookout... 11:36 am and 11:19 PM...

Now along the Potomac River...
Alexandria... 6:23 PM and 6:46 am...
Indian Head... 5:51 PM and 6:14 am...
Goose Bay... 1:57 PM and 2:20 am...
Coltons Point... 12:47 PM and 1:10 am...

A coastal Flood Watch means that conditions favorable for
flooding are expected to develop. Coastal residents should be
alert for later statements or warnings... and take action to
protect property.





Back to top


Copyright © 2010 The Weather Underground, Inc.