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Western PA/Pittsburgh Summer Discussion 2021


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27 minutes ago, Rd9108 said:

Fred's starting to pivot too now. Hopefully we get this guy out earlier than forecasted.

 

One other thing I saw is there is another hurricane, Henri who looks like it may make a run at the New England. 

Fingers crossed we’ll get some of that dry slotting that sometimes pays us a visit in winter.

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1 hour ago, Ahoff said:

Wasn't it forecast to top out at 80?  I thought I saw that.

I’m thinking yesterday was close. We also got a sneaky 82 on Tuesday, and I think we made 80 on a day behind a cold front a few weeks back that was only supposed to get to 74-75.

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45 minutes ago, Ahoff said:

Could be the hottest week of summer this week.  Get it out of it's system and bring on a comfy September.

Looks like we could add a couple more 90 degree days this week. Last full week of met summer, it was hot last year at this time too and we got a beautiful September.

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47 minutes ago, KPITSnow said:

It would be wonderful if September could be 70’s and 50’s. I know later in September we got down into the 30’s at least one night.

Think it was a 4 day stretch last year with a 38, a 39, and 2 40’s. I looked at it the other day.

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Flash Flood Warning

Flash Flood Warning
PAC003-019-252245-
/O.NEW.KPBZ.FF.W.0030.210825T2117Z-210825T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pittsburgh PA
517 PM EDT Wed Aug 25 2021

The National Weather Service in Pittsburgh has issued a

* Flash Flood Warning for...
  North Central Allegheny County in southwestern Pennsylvania...
  Southwestern Butler County in west central Pennsylvania...

* Until 645 PM EDT.

* At 517 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Between 1.5 and 2.5 inches of
  rain have fallen. Additional rainfall amounts of 1 to 2 inches are
  possible in the warned area. Flash flooding is ongoing or expected
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  McCandless Township, Cranberry, Franklin Park, Hampton Township,
  Economy, Wexford, Zelienople, Seven Fields, Gibsonia, Oak Hills,
  Evans City, Mars, Bell Acres, Nixon, Bradfordwoods, Harmony,
  Valencia, Connoquenessing, Callery and Pine Township.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 4082 8016 4082 7991 4060 7990 4059 8020
      4060 8019 4061 8018 4061 8017 4061 8015

FLASH FLOOD...RADAR INDICATED

$$

 

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Flash Flood Warning

Flash Flood Warning
PAC003-125-252330-
/O.NEW.KPBZ.FF.W.0034.210825T2205Z-210825T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pittsburgh PA
605 PM EDT Wed Aug 25 2021

The National Weather Service in Pittsburgh has issued a

* Flash Flood Warning for...
  Central Allegheny County in southwestern Pennsylvania...
  Central Washington County in southwestern Pennsylvania...

* Until 730 PM EDT.

* At 605 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Between 1.5 and 3 inches of
  rain have fallen. Additional rainfall amounts of 1 to 2 inches are
  possible in the warned area. Flash flooding is ongoing or expected
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Pittsburgh, Penn Hills, Mount Lebanon, Bethel Park, McMurray,
  McKeesport, Shaler Township, West Mifflin, North Side Pittsburgh,
  Baldwin, Upper St. Clair, Scott Township, Wilkinsburg, Whitehall,
  South Park Township, Robinson Township, Munhall, Jefferson Hills,
  Brentwood and Swissvale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4048 8008 4051 7986 4029 7985 4029 8012

FLASH FLOOD...RADAR INDICATED

$$

 

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On 8/25/2021 at 5:30 PM, TimB84 said:

This is nasty. I can see where there’d be flooding issues in areas where it’s sat for a long time.

Also, daily climate report does confirm 90 was reached. I believe that’s #5 for the summer.

Yep, I was in one of the areas that received 2.5-3" of rain.  Torrent of water shot straight from the wooded area above on a direct path to my basement window well, didn't realize until it was already full of water, got about 0.5" across half the basement floor through the window.  Redirected the water up on the slope and bucketed out the window well as if I were on a sinking ship.  Nothing really damaged as I was able to vacuum the water up and got dehumidifiers, fans down to the basement super quick.

The creek further down the slope swelled to a size that one of the elderly neighbors said, "I've lived here my whole life and only saw this happen 2 or 3 times."  He said the last time it happened was when there were two hurricanes that came through back-to-back.  Road was closed where the swollen creek passed under it and a few miles down from there are, well *were*, train tracks now washed out.

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21 minutes ago, KPITSnow said:

https://www.nhc.noaa.gov/refresh/graphics_at4+shtml/093339.shtml?rainqpf#contents

This would be...problematic to say the least around here.

Hard to tell if PBZ isn’t too keen on that scenario coming to fruition (I for one hope it doesn’t), if their forecast discussion is just bare bones as we know it so often is, or if they’re hedging their bets because we’re still 60-72 hours out from the onset of rain in our area from this storm. I’m leaning towards hedging their bets, as they do seem to have more to say about tomorrow’s event than they do about the remnants of Ida. But they’re not carrying anything more than 70% chances of rain when Ida moves through. CTP, as usual, has more to say on the matter.

Beyond all that, I’m really worried that this will be a catastrophic event in Louisiana. It’s now up to a high end Cat 4.

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7 minutes ago, TimB84 said:

Hard to tell if PBZ isn’t too keen on that scenario coming to fruition (I for one hope it doesn’t), if their forecast discussion is just bare bones as we know it so often is, or if they’re hedging their bets because we’re still 60-72 hours out from the onset of rain in our area from this storm. I’m leaning towards hedging their bets, as they do seem to have more to say about tomorrow’s event than they do about the remnants of Ida. But they’re not carrying anything more than 70% chances of rain when Ida moves through. CTP, as usual, has more to say on the matter.

Beyond all that, I’m really worried that this will be a catastrophic event in Louisiana. It’s now up to a high end Cat 4.

I was thinking the upped it to Cat 5 at 160.  Maybe that wa sjsut people guessing on the weather board base don recon flights.  Its going to leave a lot of destruction.


Edit-I see now the official number is still 150. 

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1 minute ago, Bubbler86 said:

I was thinking the upped it to Cat 5 at 160.  Maybe that wa sjsut people guessing on the weather board base don recon flights.  Its going to leave a lot of destruction.

The official NHC number is 150, though their latest update basically says this very well could become a Cat 5 before landfall.

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