iradiophilly | News - Philadelphia Under Tropical Storm Watch/Flood Watch Ahead of Tropical Storm Isaias

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Philadelphia Under Tropical Storm Watch/Flood Watch Ahead of Tropical Storm Isaias

by: iradioal - Philadelphia, PA
started: 08/02/20 9:55 pm | updated: 08/02/20 10:08 pm

Philadelphia and the surrounding area is under a Tropical Storm Watch meaning tropical storm-force winds are possible in the next 48 hours. The area is also under a Flash Flood Watch from Monday evening to late Tuesday Evening. Tropical Storm Isaias will be making its way up the East Coast of the United States over the next two days. Our area is currently in the predicted track of the storm, which is still expected to be at tropical storm strength when it passes. The timing will be late Monday throughout Tuesday, with the greater impact later in the day Tuesday into the evening. The Jersey Shore will start to see dangerous riptides and higher surf out in front of the system. Winds are expected to be 30-40 mph, with gusts over 50. Rain will be 3-6 inches, with locally higher amounts. Prepare any outdoor spaces now. See updated charts on track, winds, and rain below.

UPDATE: The National Weather Service has upgraded this watch to a Tropical Storm Warning.

TROPICAL STORM WATCH INFORMATION

* WIND

- LATEST LOCAL FORECAST: Equivalent Tropical Storm force wind
- Peak Wind Forecast: 30-40 mph with gusts to 50 mph
- Window for Tropical Storm force winds: Tuesday afternoon
until Tuesday evening
- THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST
UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 39
to 57 mph
- PLAN: Plan for hazardous wind of equivalent tropical storm
force.
- PREPARE: Efforts to protect property should now be
underway. Prepare for limited wind damage.
- ACT: Act now to complete preparations before the wind
becomes hazardous.
- POTENTIAL IMPACTS: Limited
- 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.

* STORM SURGE

- LATEST LOCAL FORECAST: Localized storm surge possible
- Peak Storm Surge Inundation: The potential for up to 2 feet
above ground somewhere within surge prone areas
- Window of concern: Tuesday morning until Tuesday evening
- THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST
UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for storm
surge flooding greater than 1 foot above ground
- PLAN: Plan for storm surge flooding greater than 1 foot
above ground.
- PREPARE: Efforts should now be underway to prepare for
storm surge flooding, especially in low-lying vulnerable
areas.
- ACT: Take actions to protect life and property. Prepare to
leave if evacuation orders are given for your area.
- POTENTIAL IMPACTS: Limited
- Localized inundation is possible with storm surge flooding
mainly along tidal creeks and rivers and in low-lying spots.
- Sections of near-river roads and parking lots could become
overspread with surge water. Dangerous driving conditions
are possible in places where surge water covers the road.

* FLOODING RAIN
- LATEST LOCAL FORECAST: Flash Flood Watch is in effect
- Peak Rainfall Amounts: Additional 3-6 inches, with locally
higher amounts
- THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST
UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for major
flooding rain
- PLAN: Emergency plans should include the potential for
major flooding from heavy rain. Evacuations and rescues are
likely.
- PREPARE: Strongly consider protective actions, especially
if you are in an area vulnerable to flooding.
- ACT: Heed any flood watches and warnings. Failure to take
action will likely result in serious injury or loss of life.
- POTENTIAL IMPACTS: Extensive
- Major rainfall flooding may prompt many evacuations and
rescues.
- Rivers and tributaries may rapidly overflow their banks in
multiple places. 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.
- Flood waters can enter many structures within multiple
communities, some structures becoming uninhabitable or
washed away. 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.

* TORNADO
- LATEST LOCAL FORECAST:
- Situation is somewhat favorable for tornadoes
- THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST
UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for a few
tornadoes
- PLAN: Emergency plans should include the potential for a
few tornadoes.
- PREPARE: If your shelter is particularly vulnerable to
tornadoes, prepare to relocate to safe shelter before
hazardous weather arrives.
- ACT: If a tornado warning is issued, be ready to shelter
quickly.
- POTENTIAL IMPACTS: Limited
- 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.