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meatwad

Pittsburgh PA "Spring" and Summer 2018

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These torrential flash floods and mud slides are getting worse than winter in terms of having to check what roads I can use to get to work each morning... Luckily for me I've either passed before or after so no major impact.

We were in the pool yesterday and all of the sudden a blast of cool air dropped the temperatures and within 5-10 minutes all hell broke lose. Nice example of gust front induced storms.

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These torrential flash floods and mud slides are getting worse than winter in terms of having to check what roads I can use to get to work each morning... Luckily for me I've either passed before or after so no major impact.
We were in the pool yesterday and all of the sudden a blast of cool air dropped the temperatures and within 5-10 minutes all hell broke lose. Nice example of gust front induced storms.

Yea could really see the storms pop up on radar along the gust front. Pretty cool stuff


.

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Heat Advisory

URGENT - WEATHER MESSAGE
National Weather Service Pittsburgh PA
209 PM EDT Tue Jul 3 2018

...Dangerous Heat and Humidity Expected For Independence Day...

OHZ039>041-048>050-057>059-068-069-PAZ007-013-014-020-021-029-031-
073-075-WVZ001>004-012-021-509-040215-
/O.NEW.KPBZ.HT.Y.0002.180704T1700Z-180704T2300Z/
Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson-
Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Lawrence-Butler-
Beaver-Allegheny-Washington-Greene-Westmoreland-Fayette-Hancock-
Brooke-Ohio-Marshall-Wetzel-Marion-Monongalia-
Including the cities of New Philadelphia, Dover, Carrollton,
Malvern, East Liverpool, Salem, Columbiana, Coshocton, Cadiz,
Steubenville, Zanesville, Cambridge, Martins Ferry,
St. Clairsville, Caldwell, Woodsfield, Sharon, Hermitage,
Grove City, New Castle, Ellwood City, Butler, Aliquippa,
Beaver Falls, Ambridge, Monaca, Pittsburgh Metro Area,
Washington, Canonsburg, Waynesburg, Murrysville, Greensburg,
New Kensington, Uniontown, Weirton, Follansbee, Wellsburg,
Wheeling, Moundsville, New Martinsville, Fairmont, and Morgantown
209 PM EDT Tue Jul 3 2018

...HEAT ADVISORY IN EFFECT FROM 1 PM TO 7 PM EDT WEDNESDAY...

The National Weather Service in Pittsburgh has issued a Heat
Advisory, which is in effect from 1 PM to 7 PM EDT Wednesday.

* HEAT INDEX VALUES...Heat indices will peak between 100 and 103
  degrees for several hours Wednesday afternoon over much of
  eastern Ohio, western Pennsylvania and northern West Virginia.

* TIMING...The worst conditions will be felt between 1 and 7 PM.

* IMPACTS...The heat and humidity may cause heat stress during
  outdoor exertion or extended exposure.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Heat Advisory means that hot temperatures and high humidity
will combine to create a situation in which heat illnesses are
possible. Drink plenty of non-alcoholic fluids, stay in an air-
conditioned room, stay out of the sun, and avoid prolonged time
outdoors.

Take extra precautions, if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when possible
and drink plenty of water.

&&

$$

Bookbinder

 

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Warning

Severe Thunderstorm Warning
PAC003-050030-
/O.NEW.KPBZ.SV.W.0119.180704T2342Z-180705T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pittsburgh PA
742 PM EDT WED JUL 4 2018

The National Weather Service in Pittsburgh has issued a

* Severe Thunderstorm Warning for...
  East central Allegheny County in southwestern Pennsylvania...

* Until 830 PM EDT.

* At 741 PM EDT, a severe thunderstorm was located over Pittsburgh,
  and is nearly stationary.

  HAZARD...Wind gusts to 60 mph and quarter-size hail.

  SOURCE...Radar.

  IMPACT...Minor hail damage to vehicles is possible. Expect wind
           damage to trees and power lines, resulting in some power
           outages.

* Locations impacted include...
  Pittsburgh...                     Penn Hills...
  Shaler Township...                Plum...
  West Mifflin...                   Baldwin...
  Wilkinsburg...                    Munhall...
  Swissvale...                      O`hara Township...
  Forest Hills...                   Oakmont...

This includes  Pennsylvania Turnpike near mile marker 49.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is occurring with this storm and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

Move to an interior room on the lowest floor of a building.

Please report severe weather by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.

&&

LAT...LON 4037 7989 4040 8001 4050 7999 4052 7994
      4054 7988 4053 7982 4051 7979
TIME...MOT...LOC 2341Z 181DEG 2KT 4045 7993

HAIL...1.00IN
WIND...60MPH

$$

 

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Special Weather Statement


 
Special Weather Statement
National Weather Service Pittsburgh PA
831 PM EDT WED JUL 4 2018

PAZ021-073-050115-
Westmoreland-Allegheny-
831 PM EDT WED JUL 4 2018

...A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING SMALL HAIL...
GUSTY WIND AND HEAVY RAIN WILL AFFECT NORTHEASTERN ALLEGHENY AND
NORTHWESTERN WESTMORELAND COUNTIES...

At 831 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Sharpsburg to Springdale. the storms are
nearly stationary.

Wind gusts up to 50 mph and small hail are possible with these
storms.

Locations impacted include...
Pittsburgh...                     Penn Hills...
Ross Township...                  McCandless Township...
Monroeville...                    Shaler Township...
Plum...                           Murrysville...
Hampton Township...               Wilkinsburg...
New Kensington...                 Lower Burrell...

This includes  Pennsylvania Turnpike between mile markers 37 and 55.

Torrential rainfall also is occurring with these storms and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Seek safe shelter inside a building or vehicle.

LAT...LON 4054 8004 4063 8000 4066 7977 4063 7963
      4050 7966 4044 7978 4040 7990
TIME...MOT...LOC 0031Z 182DEG 4KT 4048 7993 4054 7977

$$
TAX

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Special Weather Statement

Special Weather Statement
National Weather Service Pittsburgh PA
831 PM EDT WED JUL 4 2018

PAZ021-073-050115-
Westmoreland-Allegheny-
831 PM EDT WED JUL 4 2018

...A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING SMALL HAIL...
GUSTY WIND AND HEAVY RAIN WILL AFFECT NORTHEASTERN ALLEGHENY AND
NORTHWESTERN WESTMORELAND COUNTIES...

At 831 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Sharpsburg to Springdale. the storms are
nearly stationary.

Wind gusts up to 50 mph and small hail are possible with these
storms.

Locations impacted include...
Pittsburgh...                     Penn Hills...
Ross Township...                  McCandless Township...
Monroeville...                    Shaler Township...
Plum...                           Murrysville...
Hampton Township...               Wilkinsburg...
New Kensington...                 Lower Burrell...

This includes  Pennsylvania Turnpike between mile markers 37 and 55.

Torrential rainfall also is occurring with these storms and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Seek safe shelter inside a building or vehicle.

LAT...LON 4054 8004 4063 8000 4066 7977 4063 7963
      4050 7966 4044 7978 4040 7990
TIME...MOT...LOC 0031Z 182DEG 4KT 4048 7993 4054 7977

$$

TAX

 

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From the WPC heavy rainfall discussion, flash flooding a concern again today:

 PWs near 2 inches (2.5
standard deviations above normal) and modest deep-layer
instability should support organized convection along and ahead of
the boundary. Lift will be enhanced by a pre-frontal mid-level
shear axis and broadly diffluent flow between the retrograding
upper ridge and trough moving across east-central Canada.
Meanwhile, the uptick in sw-wsw low level flow ahead of the
surface front (25-30 kts) will foster backbuilding convection and
cell training, especially over the Slight risk region later this
afternoon and evening when the low-level inflow exceeds and
becomes more parallel to the 850-300 mb mean wind (Corfidi vectors
in opposite direction of the low-level inflow, thus bolstering
upwind propagation). In addition, much of the Slight risk area
(especially western PA and eastern OH) has lower FFG given the wet
antecedent soils. In fact, the latest (00Z) HREF 40 km
neighborhood probabilities of 3 hourly QPF exceeding the FFG peak
between 50-60% across far eastern OH and western PA between 21-00Z
this afternoon and evening.

 

 

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I think we may have had one of those “wet downburst” in Bellevue/westview this morning. A ton of tree damage and big limbs down. Very localized, but damage was extremely impressive. 

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I think we may have had one of those “wet downburst” in Bellevue/westview this morning. A ton of tree damage and big limbs down. Very localized, but damage was extremely impressive. 

Any pictures of the damage?


.

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I can’t remember a period where storms where so continuously slow or stationary.

And because of that, not all areas are getting it but the ones that do are more prone to flooding. Just an odd and somewhat dangerous period, and checking online has been a great idea before traveling anywhere. 

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Severe Thunderstorm Warning

Severe Thunderstorm Warning
PAC003-125-152200-
/O.NEW.KPBZ.SV.W.0135.180715T2113Z-180715T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pittsburgh PA
513 PM EDT SUN JUL 15 2018

The National Weather Service in Pittsburgh has issued a

* Severe Thunderstorm Warning for...
  Central Washington County in southwestern Pennsylvania...
  Southwestern Allegheny County in southwestern Pennsylvania...

* Until 600 PM EDT.

* At 513 PM EDT, a severe thunderstorm was located over Dormont, or
  near Pittsburgh, moving southwest at 5 mph.

  HAZARD...Wind gusts to 60 mph and half dollar-size hail.

  SOURCE...Radar.

  IMPACT...Minor hail damage to vehicles is possible. Expect wind
           damage to trees and power lines, resulting in some power
           outages.

* Locations impacted include...
  Pittsburgh...                     Mount Lebanon...
  Bethel Park...                    McMurray...
  Canonsburg...                     Gastonville...
  West Mifflin...                   North Side Pittsburgh...
  Baldwin...                        Upper St. Clair...
  Scott Township...                 Whitehall...

This includes the following highways...
  Interstate 79 in Pennsylvania between mile markers 46 and 61.
  Parkway North between mile markers 1 and 3.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to an interior room on the lowest floor of a building.

Please report severe weather by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.

&&

LAT...LON 4050 8006 4041 7986 4017 7997 4031 8028
TIME...MOT...LOC 2113Z 029DEG 6KT 4040 8002

HAIL...1.25IN

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Got nailed in Bethel Park again. Some flooding. Not as bad as a few weeks ago from what I see so far. These storms had more wind and a lot of trees down. Power outages. Haven't been out to check anything out yet. I live right near the Trolley Stop. I'm sure they got nervous all over again there.

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6 hours ago, blackngoldrules said:

Got nailed in Bethel Park again. Some flooding. Not as bad as a few weeks ago from what I see so far. These storms had more wind and a lot of trees down. Power outages. Haven't been out to check anything out yet. I live right near the Trolley Stop. I'm sure they got nervous all over again there.

The slow movement of the storm allowed it to backbuild to the northside, and intensify as the whole system moved SSW.

Had decent winds out the NNE along with the rain and hail. Also lost power for a couple hours.

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Flash Flood Warning

Flash Flood Warning
PAC003-052015-
/O.NEW.KPBZ.FF.W.0060.180805T1818Z-180805T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pittsburgh PA
218 PM EDT SUN AUG 5 2018

The National Weather Service in Pittsburgh has issued a

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

* Until 415 PM EDT.

* At 215 PM EDT, radar indicated thunderstorms producing torrential
  rainfall over portions of the South Hills.

  FLASH FLOODING...     Expected.

  ESTIMATED RAINFALL... Up to 1 inch.

  ADDITIONAL RAINFALL...Up to 1/2 inch.

* Some locations that may experience flooding include...
  Pittsburgh South Side...          Mount Lebanon...
  Bethel Park...                    Baldwin...
  Upper St. Clair...                Scott Township...
  Whitehall...                      Brentwood...
  Dormont...                        Castle Shannon...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Runoff from heavy rainfall will flood small streams, poor-drainage
areas and low-lying spots.

Please report flooding by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.

&&

LAT...LON 4042 7997 4036 7996 4035 8007 4041 8007

$$

Bookbinder

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I’m in Bellevue, and can’t figure why I have a severe thubderstorm warning. 

I saw that one and questioned it too. I think they have since cancelled it. I still haven’t received a drop of rain


.

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For tomorrow from the SPC

 

...Appalachians/Upper Ohio River Valley and Mid-Atlantic States...
   Widespread convection within a moderately sheared environment will
   create the potential for a relatively active severe weather day
   across portions of the Appalachians/OH River Valley into the
   Mid-Atlantic, but poor midlevel lapse rates and the impact of early
   day precipitation/clouds on destabilization may tend to mitigate
   this threat to some extent. The severe threat should begin to evolve
   by late morning/early afternoon, as midlevel flow and effective
   shear gradually increase and pockets of heating/destabilization
   develop in the wake of early morning convection. Thunderstorm
   redevelopment is expected along the cold front pushing into western
   PA, and also across the higher terrain of the central/northern
   Appalachians. Effective shear of 30-40 kt will be sufficient for
   organized multicell clusters and perhaps a few supercells. Corridors
   of locally damaging wind are likely to be the primary threat, but a
   couple of tornadoes are also possible, especially with any supercell
   that interacts with differential heating boundaries that may evolve
   through the day. 

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mcd1334.gif

 

Mesoscale Discussion 1334
   NWS Storm Prediction Center Norman OK
   0116 PM CDT Tue Aug 21 2018

   Areas affected...Parts of western and central PA...WV...and the
   western MD Panhandle

   Concerning...Severe potential...Watch possible 

   Valid 211816Z - 212015Z

   Probability of Watch Issuance...60 percent

   SUMMARY...A severe thunderstorm watch is being considered for parts
   of western and central Pennsylvania into parts of West Virginia and
   the western Maryland Panhandle.  Strong wind gusts will be the
   primary severe weather threat, though a tornado or two is possible.

   DISCUSSION...Surface streamline analysis indicated an area of
   confluence from eastern WV into western PA early this afternoon,
   which appears to be coincident to the leading edge of greater
   forcing for ascent spreading east across the discussion area ahead
   of the approaching upper trough.  Breaks in cloudiness this
   afternoon have allowed for some surface heating within a moist
   environment contributing to moderate destabilization (MLCAPE of at
   least 1000 J/kg).  30-40 kt of southwesterly midlevel winds will
   maintain sufficient effective bulk shear for line segments/bowing
   structures, with damaging winds the primary severe hazard.  However,
   a tornado threat does exist, especially in locations where surface
   and low-level winds have a southerly trajectory, enhancing low-level
   shear/rotation.

   ..Peters/Guyer.. 08/21/2018

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WATCH COUNTY NOTIFICATION FOR WATCH 346
NATIONAL WEATHER SERVICE PITTSBURGH PA
241 PM EDT TUE AUG 21 2018

MDC023-PAC005-031-051-063-065-129-WVC077-093-220200-
/O.NEW.KPBZ.SV.A.0346.180821T1841Z-180822T0200Z/

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
346 IN EFFECT UNTIL 10 PM EDT THIS EVENING FOR THE FOLLOWING
AREAS

IN MARYLAND THIS WATCH INCLUDES 1 COUNTY

IN WESTERN MARYLAND

GARRETT

IN PENNSYLVANIA THIS WATCH INCLUDES 6 COUNTIES

IN SOUTHWEST PENNSYLVANIA

FAYETTE               WESTMORELAND

IN WEST CENTRAL PENNSYLVANIA

ARMSTRONG             CLARION               INDIANA
JEFFERSON

IN WEST VIRGINIA THIS WATCH INCLUDES 2 COUNTIES

IN NORTHEAST WEST VIRGINIA

PRESTON               TUCKER

THIS INCLUDES THE CITIES OF BROOKVILLE, CLARION, CONNELLSVILLE,
DAVIS, FORD CITY, GRANTSVILLE, GREENSBURG, INDIANA, KINGWOOD,
KITTANNING, LATROBE, MASONTOWN, MOUNTAIN LAKE PARK, MURRYSVILLE,
NEW KENSINGTON, OAKLAND MD, PARSONS, PUNXSUTAWNEY, TERRA ALTA,
THOMAS, AND UNIONTOWN.

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13 hours ago, ChalkHillSnowNut said:

It’s gonna feel like fall tonight and tomorrow morning!:D

Already in the low 60's at my house. Im sitting outside in a sweatshirt. :shiver:

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Time to start up again for Fall/Winter.  This late season heat looks to continue into late September.  I'm hoping this means we'll have a swing to below normal later this Fall, though all long term maps from NWS show above normal clear through the winter months.  Looks like a deluge coming late this weekend and then current GFS has Florence possibly coming into PA late next week.  Definitely some active weather to track.

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3 hours ago, TeaysValleyWV said:

Time to start up again for Fall/Winter.  This late season heat looks to continue into late September.  I'm hoping this means we'll have a swing to below normal later this Fall, though all long term maps from NWS show above normal clear through the winter months.  Looks like a deluge coming late this weekend and then current GFS has Florence possibly coming into PA late next week.  Definitely some active weather to track.

Beat me to it! Tropical season is like the preseason for winter in my book

Sunday definitely looking like a wash out thanks to Gordan remnants and the stalled boundary. Expect we will see flood headlines from NWS.

Florence bucking recent history if it makes landfall from current lat / long, but if the models are right on the steering ridge lookout as the conditions a day or so from now look ripe for intensification. Models look to have 2 camps, one with a SC/NC border landfall (this scenario seems to favor some impact here) and the other camp recurving but close enough for coastal impact. Margin of error for track at this lead though is hundreds of miles, but will be fun to keep an eye on and shake some rust off tracking skills. 

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Well, just finished moving recently, now residing in Allegheny county.

4th floor apartment has a nice view off to the north and east; sadly, I'll miss the best views incoming from the west, but maybe I can grab some decent observations for once.  In winter, not sure what the big differences will be, as I know the warm tongue does tend to drift this far north.  Maybe slightly more lake effect accums.

Might be looking at a lot of rain in the short-term.  Who knows yet what Florence will do.  Here's WPC estimates currently:

8ex3J28.gif

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4 minutes ago, jwilson said:

Well, just finished moving recently, now residing in Allegheny county.

4th floor apartment has a nice view off to the north and east; sadly, I'll miss the best views incoming from the west, but maybe I can grab some decent observations for once.  In winter, not sure what the big differences will be, as I know the warm tongue does tend to drift this far north.  Maybe slightly more lake effect accums.

Might be looking at a lot of rain in the short-term.  Who knows yet what Florence will do.  Here's WPC estimates currently:

8ex3J28.gif

What part of Allegheny County ?

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