[Tropical] Hurricane Local Statement

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Tropical Storm Isaias Local Statement Advisory Number 31
National Weather Service Gray ME  AL092020
517 PM EDT Tue Aug 4 2020

This product covers NEW HAMPSHIRE AND WESTERN MAINE

***TROPICAL STORM ISAIAS CONTINUES TO ACCELERATE NORTHWARD***

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

* CHANGES TO WATCHES AND WARNINGS:
    - The Tropical Storm Watch has been cancelled for Central
      Somerset, Interior Waldo, Kennebec, and Southern Somerset

* CURRENT WATCHES AND WARNINGS:
    - A Tropical Storm Warning is in effect for Androscoggin,
      Belknap, Central Interior Cumberland, Cheshire, Coastal
      Cumberland, Coastal Rockingham, Coastal Waldo, Coastal York,
      Eastern Hillsborough, Interior Cumberland Highlands, Interior
      Rockingham, Interior York, Knox, Lincoln, Merrimack, Northern
      Carroll, Northern Coos, Northern Franklin, Northern Grafton,
      Northern Oxford, Sagadahoc, Southern Carroll, Southern Coos,
      Southern Franklin, Southern Grafton, Southern Oxford,
      Strafford, Sullivan, and Western And Central Hillsborough

* STORM INFORMATION:
    - About 210 miles west-southwest of Portland ME or about 180
      miles west of Portsmouth NH
    - 42.7N 74.2W
    - Storm Intensity 65 mph
    - Movement North-northeast or 20 degrees at 40 mph

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

Tropical Storm Isaias continues to track through New England, and
will more or less follow the Connecticut River Valley north through
this evening. Conditions will quickly deteriorate over the next
several hours from south to north, with the worst of the impacts
expected this evening.

Easterly winds will continue to strengthen this evening as they shift
to southerly across much of the area. Wind gusts of 40 to 50 mph are
expect, with locally higher gusts to 60 mph possible. This will be
capable of downing some trees and power lines. In addition, there
continues to be a threat for isolated tornadoes mainly across southern
New Hampshire and extreme southwestern Maine. Winds will begin to
diminish late this evening. Rainfall totals of 1 to 2 inches are still
expected in parts of the White Mountains and Connecticut River Valley.
With the more western track of Isaias the flash flooding threat has
diminished. Locally higher amounts in the higher terrain may lead to
flash flooding in complex terrain or poor drainage areas. Parts of the
forecast area near the coast may see less than 1 inch of rainfall.

In general, the coastal flooding threat remains low based on the
forecast forward speed of Isaias, with any inundation likely less than
a foot. Some splashover is expected during the high tide tonight.
Rough surf and an increased risk for dangerous rip currents will be
possible behind Isaias on Wednesday.

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

* WIND:
Potential impacts from the main wind event are now unfolding across
Much of southern New Hampshire and southwestern Maine. Remain well
sheltered from dangerous wind having possible significant impacts. If
realized, these impacts include:
    - Some damage to roofing and siding materials, along with damage
      to porches, awnings, carports, and sheds. A few buildings
      experiencing window, door, and garage door failures. Mobile
      homes are damaged, especially if unanchored. Unsecured
      lightweight objects become dangerous projectiles.
    - Numerous large trees snapped or uprooted, leading to downed
      power lines.
    - Many roads are impassable from debris, caused by downed trees
      and power lines. Many bridges, causeways, and access routes
      impassable.
    - Numerous power and communications outages likely.

Potential impacts from the main wind event are also now unfolding
across northern New Hampshire and the western Maine mountains.
Remain well sheltered from hazardous wind having possible limited
impacts.

* SURGE:
Little to no storm surge impacts are anticipated at this time across
New Hampshire and western Maine.

* FLOODING RAIN:
Potential impacts from the flooding rain are still unfolding across
the Connecticut River Valley and the White Mountains. Remain well
guarded against dangerous flood waters having possible significant
impacts. If realized, these impacts include:
    - Moderate rainfall flooding may prompt several evacuations and
      rescues.
    - Rivers and tributaries may quickly become swollen with swifter
      currents and overspill their banks in a few places, especially
      in usually vulnerable spots. Small streams, creeks, canals, and
      ditches will overflow.
    - Flood waters can enter some structures or weaken foundations.
      Several places may experience expanded areas of rapid
      inundation at underpasses, low-lying spots, and poor drainage
      areas. Some streets and parking lots take on moving water as
      storm drains and retention ponds overflow. Driving conditions
      will become hazardous. Some road and bridge closures.

Potential impacts from the flooding rain are still unfolding across
southern New Hampshire and western Maine. Remain well guarded against
locally hazardous flood waters having possible limited impacts.

* TORNADOES:
Potential impacts from tornadoes are still unfolding across New
Hampshire and western Maine. Remain well braced against a tornado
event having additional limited impacts. If realized, these impacts
include:
    - The occurrence of isolated tornadoes can hinder the execution
      of emergency plans during tropical events.
    - A few places may experience tornado damage, along with power
      and communications disruptions.
    - Locations could realize roofs peeled off buildings, chimneys
      toppled, mobile homes pushed off foundations or overturned,
      large tree tops and branches snapped off, shallow-rooted trees
      knocked over, moving vehicles blown off roads, and small boats
      pulled from moorings.

PRECAUTIONARY/PREPAREDNESS ACTIONS
----------------------------------
Now is the time to remain safely sheltered from the storm. Stay
inside and away from windows. Listen for updates and be ready in case
you lose electrical power. Locate your battery powered radio and
flashlight from your Emergency Supplies Kit. Keep these items close.

During the peak of the storm, keep your shoes on and rain gear handy.
Boots and tennis shoes offer the best foot protection if you become
unexpectedly exposed to the elements.

Continue to keep your cell phone well charged for as long as
possible. If you lose power, use it more sparingly and mainly for
personal emergencies and check-ins. Do not overload communications
systems with idle chatter.

Do not be a thrill seeker or risk your life for senseless photos or
videos. Be wise and avoid becoming another statistic.

Be ready to move to the identified safe room if your home or shelter
begins to fail. Quickly move to an interior room on the lowest floor.
Put as many sturdy walls between you and the storm as you can.
Protect your head and body.

* 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 Gray ME as conditions warrant.

$$

Legro
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