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whus41 klwx 180859

coastal hazard message
national weather service baltimore md/washington dc
359 am est tue dec 18 2018

district of columbia-
359 am est tue dec 18 2018

...coastal flood warning remains in effect until 1 pm est this

* locations...shoreline in the district of columbia.

* tidal departure...tidal anomalies themselves will be 1 to 1.5 
  feet above normal. however, the main source of excess water 
  will be fresh water flowing down the potomac from recent heavy 
  rains, which will overwhelm the tidal anomalies, particularly 
  at wisconsin avenue.

* timing...continuing through midday today. the flood crest has 

* impacts...inundation will threaten buildings along the 
  immediate shoreline in georgetown. backwater flooding on rock 
  creek may also approach structures. a majority of roosevelt 
  island will be covered by flood waters. the unprotected area 
  on the southwest waterfront at the dc seafood market is 
  expected to flood. water is expected to approach parts of the 
  hains point loop road, but it will likely be closed. 
  elsewhere, inundation of one to three feet above ground level 
  can be expected in low- lying, unprotected areas.

precautionary/preparedness actions...

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



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