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National Weather Service: Coastal Flood Warning , Areal Flood Watch |
Short-term forecast
Issued by the National Weather Service at 8:36 am EST on March 13, 2010
Flood Watch in effect through Sunday evening... Light to occasionally moderate rainfall will continue to fall across areas mainly along and east of the Interstate 95 corridor...including Washington DC and the city of Baltimore. Through 11 am...rainfall amounts will average less than a tenth of an inch. Rainfall is expected to increase in intensity across lower southern Maryland late this morning into the early afternoon.
5-day forecast
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| Rain | Rain Showers | Chance of Rain | Partly Cloudy | Clear |
| 50° | 45° | 52° | 40° | 52° | 38° | 56° | 40° | 56° | 36° |
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Forecast
As of 9:00 am EST on March 13, 2010
Rest of Today...Rain. Rain may be heavy at times. Breezy with highs around 50. East winds 15 to 25 mph with gusts up to 35 mph. Chance of rain near 100 percent.
Tonight...Rain...mainly in the evening. Lows in the mid 40s. Northeast winds 10 to 15 mph. Chance of rain near 100 percent.
Sunday...Showers...mainly in the afternoon. Highs in the lower 50s. Northeast winds 5 to 10 mph. Chance of rain 80 percent.
Radar
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Regional conditions
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Almanac
Key: T = Trace of precipitation; MM = data not available
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Coastal Flood Warning
Issued by the National Weather Service at 8:16 am EST on March 13, 2010
... Coastal Flood Warning remains in effect until 10 PM EST this
evening...
A coastal Flood Warning remains in effect until 10 PM EST this
evening.
Water levels were running 2 to 3 feet above normal on the tidal
Potomac River and Maryland Chesapeake Bay. These positive
departures will continue to result in minor to moderate tidal
flooding during the remaining high tides this morning.
With a persistent and gusty easterly wind... water levels are
expected to remain 2 to 3 feet above astronomical predictions
later today. This combined with the new moon phase of the lunar
cycle is expected to result in moderate tidal flooding during high
tide times this afternoon and evening.
Moderate tidal flooding will continue to be possible into Sunday
as water levels will be slow to recede. In addition... runoff from
heavy rainfall will enhance the flood threat on the upper tidal
Potomac River.
Here are the times of the next high tides
for a few locations from north to south...
on the Chesapeake Bay...
Havre de Grace... 8:51 PM...
Bowley Bar... 6:30 PM...
Fort McHenry Baltimore... 5:38 PM...
Annapolis U.S. Naval Academy... 4:08 PM...
Solomons Island... 1:00 PM...
Point Lookout... 12:10 PM...
Now along the Potomac River...
Alexandria... 7:07 PM...
Indian Head... 6:35 PM...
Goose Bay... 2:41 PM ...
Coltons Point... 1:31 PM...
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Areal Flood Watch
Issued by the National Weather Service at 4:23 am EST on March 13, 2010
... Flood Watch remains in effect through Sunday 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 Sunday evening
* low pressure will continue to bring periods of moderate to heavy
rain through this evening.
* The likelihood of flooding of small streams and creeks in
addition to urban areas is expected through this evening.
Additionally... minor to moderate flooding of feeder creeks and
streams of the Potomac and Shenandoah rivers is likely to last
through Sunday night. Along the mainstem Potomac
River... moderate flooding is likely to start this evening at
Paw Paw... Harpers Ferry... Point of Rocks and Little Falls... and
last through Sunday night. Along the mainstem Shenandoah
River... moderate flooding is likely at and downstream of
Millville.
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.
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