San Juan and Vicinity Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Flash Flood Watch
Issued: 5:37 AM AST Sep. 19, 2017 – National Weather Service

... Flash Flood Watch remains in effect through Friday afternoon...

The Flash Flood Watch continues for

* all of the U.S. Virgin Islands and Puerto Rico including
   Culebra and Vieques.

* Through Friday afternoon

* Hurricane Maria continues intensifying in an atmosphere
abundant in moisture. It is moving relatively slowly and will
linger over the local area for more than 24 hours spreading
torrential downpours across the islands with even more intense
rainfall in the mountains of the islands it encounters. A
storm total of 12 to 18 inches is expected and isolated areas
may receive 25 inches or more.

* This flooding will lead to rapid rises in all streams and
rivers in the U.S. Virgin Islands and then Puerto Rico. Low
lying roads will be flooded first and many major highways will
be made impassible during the passage of the storm. Mudslides
may also block roads not expected to flood. Any homes in low-
lying areas near rivers and streams will be flooded and
flooding may leave residents with no Avenue of escape. Those
in coastal areas may have streams and rivers backed up from
storm surge created by the hurricane. Downed electrical wires
may be able to electrify these waters as an additional hazard.
Some bridges and causeways may also wash away.

Precautionary/preparedness actions...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding.

This is a very dangerous situation. If you have any doubts about
whether you will be in a flooded area or if your shelter may be
in danger of mudslides, you should seek shelter from Hurricane
Maria early--before winds and rains commence Tuesday.

Preparations for this flooding should be made in advance. The
National Weather Service will continue to monitor this dangerous
situation and keep forecasts and warnings updated.





Flash Flood Watch
Issued: 5:37 AM AST Sep. 19, 2017 – National Weather Service

... Flash Flood Watch remains in effect through Friday afternoon...

The Flash Flood Watch continues for

* all of the U.S. Virgin Islands and Puerto Rico including
   Culebra and Vieques.

* Through Friday afternoon

* Hurricane Maria continues intensifying in an atmosphere
abundant in moisture. It is moving relatively slowly and will
linger over the local area for more than 24 hours spreading
torrential downpours across the islands with even more intense
rainfall in the mountains of the islands it encounters. A
storm total of 12 to 18 inches is expected and isolated areas
may receive 25 inches or more.

* This flooding will lead to rapid rises in all streams and
rivers in the U.S. Virgin Islands and then Puerto Rico. Low
lying roads will be flooded first and many major highways will
be made impassible during the passage of the storm. Mudslides
may also block roads not expected to flood. Any homes in low-
lying areas near rivers and streams will be flooded and
flooding may leave residents with no Avenue of escape. Those
in coastal areas may have streams and rivers backed up from
storm surge created by the hurricane. Downed electrical wires
may be able to electrify these waters as an additional hazard.
Some bridges and causeways may also wash away.

Precautionary/preparedness actions...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding.

This is a very dangerous situation. If you have any doubts about
whether you will be in a flooded area or if your shelter may be
in danger of mudslides, you should seek shelter from Hurricane
Maria early--before winds and rains commence Tuesday.

Preparations for this flooding should be made in advance. The
National Weather Service will continue to monitor this dangerous
situation and keep forecasts and warnings updated.





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