[Tropical] Hurricane Local Statement

[EMWIN Server]

WTCA82 TJSJ 300330
HLSSJU
PRZ001>013-VIZ001-002-301130-

Tropical Storm Isaias Local Statement Advisory Number 7
National Weather Service San Juan PR  AL092020
1130 PM AST Wed Jul 29 2020

This product covers Puerto Rico and the US Virgin Islands

**Tropical Storm Isaias has Been Named**


NEW INFORMATION
---------------

* CHANGES TO WATCHES AND WARNINGS:
    - A circulation in the flow has been found
    - Potential Tropical Cyclone 9 is now Tropical Storm Isaias
    - The Warning over the local waters is now set to expire at 2 PM
      AST

* CURRENT WATCHES AND WARNINGS:
    - A Tropical Storm Warning is in effect for Central Interior,
      Culebra, Eastern Interior, Mayaguez and Vicinity, North
      Central, Northeast, Northwest, Ponce and Vicinity, San Juan and
      Vicinity, Southeast, Southwest, St Croix, St.Thomas...St.
      John...and Adjacent Islands, Vieques, and Western Interior

* STORM INFORMATION:
    - About 190 miles south-southwest of San Juan PR or about 170
      miles south of Mayaguez PR
    - 15.8N 67.0W
    - Storm Intensity 50 mph
    - Movement West-northwest or 285 degrees at 20 mph

SITUATION OVERVIEW
------------------

A Tropical Storm Warning remains in effect for Puerto Rico and the
U.S. Virgin Islands. A circulation has been found, therefore
Potential Tropical Cyclone 9 is now Tropical Storm Isaias. Doppler
radar and recent surface observations indicate torrential rainfall
and gusty conditions spreading across the Atlantic waters and
eastern Puerto Rico. Latest lightning information shows
thunderstorms south of the area only. Rainfall accumulations totals
of 1.5-2.5 inches have been observed in the last 24 hours, resulting
in a gradual saturation of the soils. Increasing shower and
thunderstorm activity and additional rounds of heavy rains will
contribute to a greater potential for life threatening flash
flooding and mudslides, as well as localized river flooding, mainly
across mainland Puerto Rico tonight into Thursday morning. Hazardous
marine and coastal conditions will continue as the system streams
west-northwestward across the eastern Caribbean and south of the
local islands tonight. These conditions are forecast to persist
through at least Thursday night.


POTENTIAL IMPACTS
-----------------

* FLOODING RAIN:
Protect against life-threatening rainfall flooding having possible
extensive impacts across Puerto Rico and the US Virgin Islands.
Potential impacts include:
    - Major rainfall flooding may prompt some evacuations and rescues.
    - Rivers and tributaries may rapidly overflow their banks in
      eastern Puerto Rico. Small streams, creeks, canals, arroyos, and
      ditches may become dangerous rivers. In mountain areas,
      destructive runoff may run quickly down valleys while increasing
      susceptibility to rockslides and mudslides. Flood control systems
      and barriers may become stressed.
    - Many places where flood waters may cover escape routes. Streets
      and parking lots become rivers of moving water with underpasses
      submerged. Driving conditions become dangerous. Many road and
      bridge closures with some weakened or washed out.

* WIND:
Protect against hazardous wind having possible limited impacts across
Puerto Rico and the US Virgin Islands. Potential impacts include:
    - Damage to porches, awnings, carports, sheds, and unanchored
      mobile homes. Unsecured lightweight objects blown about.
    - Many large tree limbs broken off. A few trees snapped or
      uprooted, but with greater numbers in places where trees are
      shallow rooted. Some fences and roadway signs blown over.
    - A few roads impassable from debris, particularly within urban
      or heavily wooded places. Hazardous driving conditions on
      bridges and other elevated roadways.
    - Scattered power and communications outages.

* SURGE:
Little to no impacts are anticipated at this time across Puerto Rico
and the US Virgin Islands.

* TORNADOES:
Little to no impacts are anticipated at this time across Puerto Rico
and the US Virgin Islands.

PRECAUTIONARY/PREPAREDNESS ACTIONS
----------------------------------

* EVACUATIONS:
Do not return to evacuated areas until hazardous winds diminish and
flood waters abate.

* ADDITIONAL SOURCES OF INFORMATION:
- For information on appropriate preparations see ready.gov
- For information on creating an emergency plan see getagameplan.org
- For additional disaster preparedness information see redcross.org

NEXT UPDATE
-----------

The next local statement will be issued by the National Weather
Service in San Juan PR around 2 AM AST, or sooner if conditions
warrant.

$$
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