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E PA/NJ/DE Summer 2020 OBS Thread


Rtd208
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Currently up to 1.21" rain so far this morning having gone through a temporary dry slot as that tornadic complex moved to my west on a NW heading.  It now seems to have been firing to my NE.  Current temp 71 with light rain. TS Isaias is moving at 33 mph like a thunderstorm! That jet streak that it is riding means some business. :o

8am-091800_5day_cone_no_line_and_wind.png

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Looks like is near the Chesapeake Bay and moving fast.  Also Tropical Storm Warning is back again for areas from the coast and inland -

Quote

Tropical Storm Warning


Isaias Local Watch/Warning Statement/Advisory Number 29
National Weather Service Mount Holly NJ  AL092020
753 AM EDT Tue Aug 4 2020

PAZ071-042000-
/O.CON.KPHI.TR.W.1009.000000T0000Z-000000T0000Z/
Philadelphia-
753 AM EDT Tue Aug 4 2020

...TROPICAL STORM WARNING REMAINS IN EFFECT...

* LOCATIONS AFFECTED
    - Philadelphia

* WIND
    - LATEST LOCAL FORECAST: Equivalent Tropical Storm force wind
        - Peak Wind Forecast: 35-45 mph with gusts to 60 mph
        - Window for Tropical Storm force winds: until late this
          afternoon

    - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST
      UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 58
      to 73 mph
        - The wind threat has remained nearly steady from the
          previous assessment.
        - PLAN: Plan for dangerous wind of equivalent strong tropical
          storm force.
        - PREPARE: Last minute efforts to protect life and property
          should now be complete. The area remains subject to
          significant wind damage.
        - ACT: Now is the time to shelter from dangerous wind.

    - POTENTIAL IMPACTS: Unfolding
        - Potential impacts from the main wind event are unfolding.

* STORM SURGE
    - LATEST LOCAL FORECAST: Life-threatening storm surge possible
        - Peak Storm Surge Inundation: The potential for 2-4 feet
          above ground somewhere within surge prone areas
        - Window of concern: through early Wednesday morning

    - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST
      UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for storm
      surge flooding greater than 3 feet above ground
        - The storm surge threat has remained nearly steady from the
          previous assessment.
        - PLAN: Shelter against life-threatening storm surge of
          greater than 3 feet above ground.
        - PREPARE: Flood preparations and ordered evacuations should
          be complete. Evacuees should be in shelters well away from
          storm surge flooding.
        - ACT: Remain sheltered in a safe location. Do not venture
          outside.

    - POTENTIAL IMPACTS: Unfolding
        - Potential impacts from the main surge event are unfolding.

* FLOODING RAIN
    - LATEST LOCAL FORECAST: Flash Flood Watch is in effect
        - Peak Rainfall Amounts: Additional 1-3 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
        - The flooding rain threat has remained nearly steady from
          the previous assessment.
        - 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: Tornado Watch is in effect
        - 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
        - The tornado threat has remained nearly steady from the
          previous assessment.
        - PLAN: Emergency plans should continue to include possible
          tornadoes.
        - PREPARE: Stay within your shelter keeping informed of the
          latest tornado situation.
        - ACT: Move quickly to the safest place within your shelter
          if a tornado warning is issued.

    - 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.

* FOR MORE INFORMATION:
    - http://oem.readyphiladelphia.org

$$


 

 

kdox_20200804_1207_BR_0.5.png

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7 minutes ago, JTA66 said:

2.56" so far. Already have some water in the basement :(

The power went out on my sister's street (the one who is in Wyndmoor) about an hour ago.

1 minute ago, Franklin0529 said:

Monmouth county by sandy hook. Not a drop of rain 

It's still down in MD/VA.  As it moves NE the heavier rain bands will be pushing into that area.

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Got up a little late due to being up till 2 am storm watching...my first reaction around 8 am was "where's the beef?". Was expecting more winds, but be careful what you wish for, looks like we're not done yet, although things are a couple of hours ahead of schedule as far as ending time. 2.35" here so far, occasional heavy showers and 72F.

 

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Heavy rain beginning to spread into the area. Tornadoes are going to be LIKELY across Jersey and maybe as far west as Philly. That tail across the ocean is fierce. Out this way, I'm dead smack in the middle of the high risk for excessive rainfall

94ewbg.gif

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1.36" so far in East Nantmeal....heaviest rain so far has remained to my east...0.56" in last hour. The numbers I will report today are from the Vantage Pro which normally under reports rain. I will update tomorrow when I am back in Chesco and check the manual gauge. I am riding this out down in Sea Isle....winds are howling....unfortunately my vantage vue is having battery problems so hoping we get enough light to get it back on line to measure some of these gusts!

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1 minute ago, Newman said:

Heavy rain beginning to spread into the area. Tornadoes are going to be LIKELY across Jersey and maybe as far west as Philly. That tail across the ocean is fierce. Out this way, I'm dead smack in the middle of the high risk for excessive rainfall

94ewbg.gif

That axis of heavy rain is over the worst possible place and would impact you guys up there. :(

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25 minutes ago, KamuSnow said:

Got up a little late due to being up till 2 am storm watching...my first reaction around 8 am was "where's the beef?". Was expecting more winds, but be careful what you wish for, looks like we're not done yet, although things are a couple of hours ahead of schedule as far as ending time. 2.35" here so far, occasional heavy showers and 72F.

 

Tornados warnings currently to the south of us btw with the storms moving north. The other Warned cell turned out to be nothing in my immediate area.

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