Coastal Flood Warning As of 4:09 am EST on March 13, 2010
... Coastal Flood Warning in effect until 10 PM EST this evening...
The National Weather Service in Baltimore MD/Washington has issued a coastal Flood Warning... which is in effect until 10 PM EST this evening. The coastal Flood Advisory is no longer in effect. The coastal Flood Watch is no longer in effect.
Water levels were running 1 to 1.5 feet above normal on the upper Chesapeake Bay and upper tidal Potomac River early this morning... and were running around 2 feet above normal on the middle Chesapeake Bay and lower tidal Potomac River. These positive departures will continue to result in minor tidal flooding during the remaining high tides this morning.
With a persistent and gusty easterly wind... water levels are expected to further increase to 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.
Minor to 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... 8:00 am and 8:51 PM... Bowley Bar... 5:38 am and 6:30 PM... Fort McHenry Baltimore... 4:47 am and 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... 6:46 am and 7:07 PM... Indian Head... 6:14 am and 6:35 PM... Goose Bay... 2:41 PM... Coltons Point... 1:31 PM...
A coastal Flood Warning means that flooding is occurring or imminent. Coastal residents in the warned area should be alert for rising water... and take appropriate action to protect life and property.
Areal Flood Watch As of 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.
Today -
Rain. Rain may be heavy at times. Highs in the mid 50s. East winds 15 to 20 mph. Chance of rain near 100 percent.
Tonight -
Rain...mainly in the evening. Lows in the mid 40s. Northeast winds 5 to 10 mph...becoming northwest after midnight. Chance of rain 80 percent.
Sunday -
Cloudy...showers...mainly in the afternoon. Highs in the mid 50s. Northwest winds 5 to 10 mph. Chance of rain 80 percent.
Sunday Night -
Cloudy with a 50 percent chance of showers. Lows around 40. North winds around 10 mph.
Monday -
Mostly cloudy with a 30 percent chance of showers. Highs in the lower 50s.
Monday Night -
Mostly cloudy. Lows in the upper 30s.
Tuesday -
Mostly sunny. Highs in the upper 50s.
Tuesday Night -
Partly cloudy. Lows around 40.
Wednesday -
Sunny. Highs in the upper 50s.
Wednesday Night -
Partly cloudy. Lows in the upper 30s.
Thursday -
Sunny. Highs around 60.
Thursday Night -
Mostly clear. Lows in the upper 30s.
Friday -
Sunny. Highs in the upper 50s.
Marine Forecasts
Local summary, Wind Speeds and High and Low Tides
Coastal Flood Warning As of 4:09 am EST on March 13, 2010
