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meatwad

Pittsburgh PA "Spring" and Summer 2018

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At this point I'm wondering do we look to break some records and see snow in May? 

Today certainly looked like winter and even managed some snow accumulation during the day. Pretty impressive for April 17th.

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13 minutes ago, RitualOfTheTrout said:

At this point I'm wondering do we look to break some records and see snow in May? 

 

It will probably still be snowing in July. Yinzers will soon start to resemble the creatures from that movie The Descent due to lack of sunshine....only fatter, of course.

 

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yGZD9A8.gif

   

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 75
   NWS Storm Prediction Center Norman OK
   245 PM EDT Fri May 4 2018

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Western and Central New York
     Eastern Ohio
     Western and Central Pennsylvania
     Northern West Virginia Panhandle
     Lake Erie
     Lake Ontario

   * Effective this Friday afternoon and evening from 245 PM until
     900 PM EDT.

   * Primary threats include...
     Widespread damaging winds and isolated significant gusts to 80
       mph likely
     Isolated large hail events to 1 inch in diameter possible
     A tornado or two possible

   SUMMARY...Thunderstorms over Ohio will race eastward across the
   watch area this afternoon, posing a risk of widespread damaging wind
   gusts.  A few reports of significant wind damage are possible.

   The severe thunderstorm watch area is approximately along and 85
   statute miles north and south of a line from 15 miles north
   northeast of Utica NY to 35 miles northwest of Wheeling WV. For a
   complete depiction of the watch see the associated watch outline
   update (WOUS64 KWNS WOU5).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   REMEMBER...A Severe Thunderstorm Watch means conditions are
   favorable for severe thunderstorms in and close to the watch area.
   Persons in these areas should be on the lookout for threatening
   weather conditions and listen for later statements and possible
   warnings. Severe thunderstorms can and occasionally do produce
   tornadoes.

   &&

   OTHER WATCH INFORMATION...CONTINUE...WW 74...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   1 inch. Extreme turbulence and surface wind gusts to 70 knots. A few
   cumulonimbi with maximum tops to 400. Mean storm motion vector
   25045.

   ...Hart

 

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Nice squall line starting to form. Meso Discussion is mentioning the impressive lapse rates coming out of Ohio and into Western PA. Should allow for some nice wind to mix down to the surface with the squall line.

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Severe Thunderstorm Warning

Severe Thunderstorm Warning
PAC003-005-019-063-129-042245-
/O.NEW.KPBZ.SV.W.0015.180504T2151Z-180504T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pittsburgh PA
551 PM EDT FRI MAY 4 2018

The National Weather Service in Pittsburgh has issued a

* Severe Thunderstorm Warning for...
  Indiana County in west central Pennsylvania...
  Southeastern Butler County in west central Pennsylvania...
  Allegheny County in southwestern Pennsylvania...
  Central Westmoreland County in southwestern Pennsylvania...
  Armstrong County in west central Pennsylvania...

* Until 645 PM EDT.

* At 550 PM EDT, severe thunderstorms were located along a line
  extending from near West Kittanning to near Moon Township, moving
  east at 45 mph.

  HAZARD...Wind gusts to 60 mph.

  SOURCE...Radar.

  IMPACT...Expect damage to trees and power lines, resulting in some
           power outages.

* Locations impacted include...
  Pittsburgh...                     Penn Hills...
  Ross Township...                  McCandless Township...
  Monroeville...                    Cranberry...
  Moon Township...                  Greensburg...
  Indiana...                        Franklin Park...
  Latrobe...                        Vandergrift...

This includes the following highways...
  Pennsylvania Turnpike between mile markers 29 and 63.
  Interstate 79 in Pennsylvania between mile markers 32 and 50.
  Parkway North between mile markers 1 and 13.

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 4039 7897 4026 7908 4048 8036 4061 8018
      4061 8014 4066 8015 4096 7951 4097 7921
      4091 7921 4091 7881 4072 7880
TIME...MOT...LOC 2150Z 270DEG 39KT 4083 7961 4053 8030

HAIL...<.75IN
WIND...60MPH

$$

 

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Special Weather Statement

Special Weather Statement
National Weather Service Pittsburgh PA
145 PM EDT THU MAY 10 2018

PAZ021-073-101830-
Westmoreland-Allegheny-
145 PM EDT THU MAY 10 2018

...A STRONG THUNDERSTORM CAPABLE OF PRODUCING GUSTY WIND WILL AFFECT
CENTRAL ALLEGHENY AND WEST CENTRAL WESTMORELAND COUNTIES...

At 144 PM EDT, a strong thunderstorm was located over Robinson
Township, or near Moon Township, moving east at 35 mph.

Wind gusts up to 50 mph are possible with this storm.

Locations impacted include...
Pittsburgh...                     Penn Hills...
Mount Lebanon...                  Bethel Park...
Ross Township...                  McCandless Township...
Monroeville...                    Moon Township...
Greensburg...                     McKeesport...
Franklin Park...                  Jeannette...

This includes the following highways...
  Pennsylvania Turnpike between mile markers 48 and 72.
  Interstate 79 in Pennsylvania between mile markers 26 and 41.
  Parkway North between mile markers 1 and 11.

This storm may intensify, so monitor local radio or television
stations for additional information and possible warnings from the
National Weather Service.

LAT...LON 4024 7957 4040 8027 4041 8027 4057 8023
      4058 8022 4051 7950
TIME...MOT...LOC 1744Z 281DEG 31KT 4048 8015

$$

 

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SUruw7n.gif


   Mesoscale Discussion 0391
   NWS Storm Prediction Center Norman OK
   1251 PM CDT Sat May 12 2018

   Areas affected...Central and eastern OH/western to south-central
   PA/northern WV/MD Panhandle

   Concerning...Severe potential...Severe Thunderstorm Watch likely 

   Valid 121751Z - 122015Z

   Probability of Watch Issuance...95 percent

   SUMMARY...A severe thunderstorm watch will be needed this afternoon
   into the evening for parts of central and eastern Ohio to central
   Pennsylvania, northern West Virginia and the Maryland Panhandle.
   Strong to severe storms are expected to develop by 3-4 PM EDT across
   central and eastern Ohio into western Pennsylvania, and spread to
   the east-southeast producing damaging wind as the primary threat.

   DISCUSSION...Early afternoon surface analysis showed a front
   extending from central IN through central OH (north of KDAY and
   south of KMFD and KCAK) and into western PA (between KPIT and KBTP)
   to an area of low pressure near KDUJ.  A warm front extended
   southeast from this low into northern MD (near or east of KHGR) to
   central DE (between KDOV and KGED).  Ongoing strong diabatic heating
   across the warm sector has resulted in sufficient weakening of
   surface-based CINH per modified PIT 12Z sounding with current
   surface conditions.  This has resulted in the development of an
   extensive cumulus and moderate cumulus field across central and
   southeast OH into western and southwest PA.  Boundary layer
   moistening combined with the strong heating and steepening lapse
   rates will support further destabilization with MUCAPE already
   ranging from 1500-2000 J/kg.  Timing of an MCV, currently located in
   west-central OH, suggests an increase in forcing for ascent with
   this feature will proceed into the OH and far western PA portion of
   the discussion area by 19-21Z.  This will support thunderstorm
   development, while a favorable CAPE/shear environment (with 50-kt
   westerly winds at 3 km per wind data at PIT and CTP) favors
   primarily a linear storm mode, producing damaging winds.

   ..Peters/Grams.. 05/12/2018

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...CTP...LWX...PBZ...RLX...CLE...ILN...

   LAT...LON   40498252 40858107 40877941 40727880 40397859 39947826
               39657802 39017882 38927986 38868203 39278265 40498252 

 

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OTSr7Xx.gif


   URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 84
   NWS Storm Prediction Center Norman OK
   250 PM EDT Sat May 12 2018

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Western and northern Maryland
     Southeast Ohio
     Southern Pennsylvania
     Far northern Virginia
     Northern West Virginia

   * Effective this Saturday afternoon and evening from 250 PM until
     1100 PM EDT.

   * Primary threats include...
     Scattered damaging wind gusts to 70 mph likely
     Isolated very large hail events to 2 inches in diameter possible

   SUMMARY...Scattered storms are expected to increase along and ahead
   of a cold front. Some of this activity will grow into clusters and
   linear segments with the primary hazard being strong to isolated
   severe gusts producing damaging winds.

   The severe thunderstorm watch area is approximately along and 50
   statute miles north and south of a line from 35 miles northwest of
   Parkersburg WV to 35 miles east northeast of Hagerstown MD. For a
   complete depiction of the watch see the associated watch outline
   update (WOUS64 KWNS WOU4).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   REMEMBER...A Severe Thunderstorm Watch means conditions are
   favorable for severe thunderstorms in and close to the watch area.
   Persons in these areas should be on the lookout for threatening
   weather conditions and listen for later statements and possible
   warnings. Severe thunderstorms can and occasionally do produce
   tornadoes.

   &&

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
   few cumulonimbi with maximum tops to 500. Mean storm motion vector
   27040.

   ...Grams

 

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Special Weather Statement

Special Weather Statement
National Weather Service Pittsburgh PA
307 PM EDT SAT MAY 12 2018

PAZ021-121945-
Allegheny-
307 PM EDT SAT MAY 12 2018

...A STRONG THUNDERSTORM CAPABLE OF PRODUCING GUSTY WIND WILL AFFECT
CENTRAL ALLEGHENY COUNTY...

At 307 PM EDT, a strong thunderstorm was located over Kennedy
Township, or near Ross Township, moving southeast at 35 mph.

Wind gusts up to 55 mph are possible with this storm.

Locations impacted include...
Pittsburgh...                     Penn Hills...
Mount Lebanon...                  Bethel Park...
Ross Township...                  McCandless Township...
Monroeville...                    Moon Township...
McKeesport...                     Franklin Park...
Shaler Township...                Plum...

This includes the following highways...
  Pennsylvania Turnpike between mile markers 54 and 58.
  Interstate 79 in Pennsylvania between mile markers 26 and 43.
  Parkway North between mile markers 1 and 13.

This storm may intensify, so monitor local radio or television
stations for additional information and possible warnings from the
National Weather Service.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
southwestern Pennsylvania.

LAT...LON 4042 7971 4039 7975 4039 7977 4031 7979
      4029 7978 4028 7980 4026 7979 4024 7981
      4023 7979 4022 7979 4021 7982 4045 8025
      4060 8013 4046 7970
TIME...MOT...LOC 1907Z 299DEG 32KT 4049 8011

$$

 

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MD 395 graphic

 

Mesoscale Discussion 0395
   NWS Storm Prediction Center Norman OK
   0405 PM CDT Sat May 12 2018

   Areas affected...Southeast OH/western and southern PA/western and
   northern MD/northern WV/far northern VA

   Concerning...Severe Thunderstorm Watch 84...

   Valid 122105Z - 122300Z

   The severe weather threat for Severe Thunderstorm Watch 84
   continues.

   SUMMARY...Severe storms producing damaging wind and hail persist
   across much of WW 84 late this afternoon.  Northern portions of this
   watch should be able to be cleared first, though storms currently
   moving into the northwest part of WW 84 preclude any clearing of
   counties at this time.

   DISCUSSION...Trends in mosaic radar imagery showed a leading broken
   band of storms extending from south-central PA (Huntingdon County)
   to central OH (Muskingum County).  Some of these storms have been
   severe, thus far, producing large hail and damaging winds.  Forcing
   for ascent attendant to a mesoscale convective vortex (MCV) will
   continue to advance from eastern OH through southern PA and northern
   MD through this evening.  This combined with moderate instability
   and strong effective bulk shear along and south of the leading band
   of storms will support a continued severe weather threat with the
   stronger storms.

   Meanwhile, a second shorter band of storms was located from northern
   Beaver County, PA to Holmes County, OH, with this activity appearing
   to be co-located with the MCV.  The Beaver County storm was moving
   to the east at 45 kt and could pose a severe threat.  However, this
   activity may be slightly elevated as it is located north of a wind
   shift.  Locally strong winds and/or hail cannot be ruled out, though
   the overall severe threat across the far northwest to north-central
   part of WW 84 may be diminishing.

   ..Peters.. 05/12/2018

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Severe Thunderstorm Warning

Severe Thunderstorm Warning
PAC003-051-059-125-129-122215-
/O.NEW.KPBZ.SV.W.0026.180512T2130Z-180512T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pittsburgh PA
530 PM EDT SAT MAY 12 2018

The National Weather Service in Pittsburgh has issued a

* Severe Thunderstorm Warning for...
  Southeastern Washington County in southwestern Pennsylvania...
  Southeastern Allegheny County in southwestern Pennsylvania...
  Southwestern Westmoreland County in southwestern Pennsylvania...
  Northeastern Greene County in southwestern Pennsylvania...
  Northwestern Fayette County in southwestern Pennsylvania...

* Until 615 PM EDT.

* At 530 PM EDT, a severe thunderstorm was located over Upper St.
  Clair, or over Bethel Park, moving southeast at 45 mph.

  HAZARD...Wind gusts to 60 mph.

  SOURCE...Radar.

  IMPACT...Expect damage to trees and power lines, resulting in some
           power outages.

* Locations impacted include...
  Pittsburgh...                     Mount Lebanon...
  Bethel Park...                    McMurray...
  Greensburg...                     McKeesport...
  Jeannette...                      Canonsburg...
  Gastonville...                    West Mifflin...
  Baldwin...                        Upper St. Clair...

This includes the following highways...
  Interstate 70 in Pennsylvania between mile markers 25 and 57.
  Pennsylvania Turnpike between mile markers 65 and 80.
  Interstate 79 in Pennsylvania between mile markers 22 and 25.

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 4030 8023 4045 7997 4024 7941 3992 7999
TIME...MOT...LOC 2130Z 317DEG 39KT 4033 8007

HAIL...<.75IN
WIND...60MPH

$$

 

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MD 398 graphic

 

 Mesoscale Discussion 0398
   NWS Storm Prediction Center Norman OK
   1256 PM CDT Sun May 13 2018

   Areas affected...portions of southeast OH...northern WV including
   Panhandle...western MD...southwest PA...northwest VA

   Concerning...Severe potential...Watch possible 

   Valid 131756Z - 132000Z

   Probability of Watch Issuance...60 percent

   SUMMARY...Isolated to widely scattered thunderstorms may develop
   this afternoon and move southeast, with a risk for large hail and
   damaging winds.  A tornado or two will also be possible.  A Severe
   Thunderstorm Watch may be needed prior to 20Z/4 pm EDT.

   DISCUSSION...Mesoanalysis at 17Z placed a nearly stationary front
   through central portions of OH and extending east/southeast into far
   northern VA.  Strong diabatic heating of a moist boundary layer
   (lower/mid 60s surface dew points) combined with relatively steep
   mid-level lapse rates will result in pockets of moderate
   surface-based instability by mid afternoon.  Latest visible imagery
   shows deepening cumulus clouds near/south of the front, and
   continued heating combined with weak frontal convergence should
   contribute to isolated thunderstorm development this afternoon. 
   Veering flow in the lowest 1-2 KM becomes largely unidirectional
   within the bulk of the cloud-bearing layer, with deep-layer shear
   ranging between 35-45 kts.

   Initial thunderstorm development may pose a risk for large hail and
   damaging winds.  Slightly more favorable low-level shear near the
   front would suggest at least some risk for a tornado, especially
   within the first few hours of initiation.  With time, a couple of
   small clusters of storms may move southeast with a risk for severe
   hail/wind.

   The area is being monitored for a Severe Thunderstorm Watch, which
   may be needed prior to 20Z.

   ..Bunting/Grams.. 05/13/2018

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Looks like we have gotten off to a good start with severe storm tracking.

I have had some good overnight storms recently. They are my favorite when you can just lie in bed and hear the rain and thunder and watch the lightning light up the room.

I am heading out to the golf course at 2:00. Doesn't look good as a line should be coming through at that time. More storms possibly overnight tonight!!!

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MD 408 graphic

Mesoscale Discussion 0408
   NWS Storm Prediction Center Norman OK
   1056 AM CDT Mon May 14 2018

   Areas affected...southeast OH...southwest PA...central/northern
   WV...western MD...and northwest VA

   Concerning...Severe potential...Severe Thunderstorm Watch likely 

   Valid 141556Z - 141700Z

   Probability of Watch Issuance...95 percent

   SUMMARY...Thunderstorms will increase in coverage and accelerate
   east/southeast with a risk for potentially widespread damaging
   winds.  Some risk will also exist for a tornado or two and isolated
   large hail will also be possible.  A Severe Thunderstorm Watch will
   be issued prior to 17Z.

   DISCUSSION...Regional composite radar imagery shows an area of
   thunderstorms in progress at 1555Z along the PA/OH border, with more
   isolated development farther west into central OH.  These storms are
   just north of a quasi-stationary composite surface front that
   extends east-west through central IN/OH and then southeast across
   eastern VA.  Continued diurnal heating of a moist airmass (surface
   dew points mid-upper 60s) will combine with steep mid-level lapse
   rates to result in moderate/strong surface-based instability this
   afternoon.  Moderately strong westerly mid-level flow will
   contribute to deep-layer shear of 35-40 kts across the area.

   Current expectations are for the cluster of storms to become
   increasingly organized over the next few hours as updrafts are able
   to tap increasing boundary layer instability, and possibly merge
   with storms developing farther west along the front.  A
   forward-propagating linear convective system is expected to develop
   and moving southeast with a risk for potentially widespread damaging
   winds.  Some risk for a QLCS tornado will also exist, and the
   stronger updrafts will also be capable of isolated severe hail.

   A Severe Thunderstorm Watch will be needed prior to 17Z based on
   this expected scenario.

   ..Bunting/Grams.. 05/14/2018

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2 hours ago, north pgh said:

Looks like we have gotten off to a good start with severe storm tracking.

I have had some good overnight storms recently. They are my favorite when you can just lie in bed and hear the rain and thunder and watch the lightning light up the room.

I am heading out to the golf course at 2:00. Doesn't look good as a line should be coming through at that time. More storms possibly overnight tonight!!!

Hah. I think your round of golf is pretty toast. 

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18 minutes ago, TeaysValleyWV said:

Individual cells look like they are really ramping up in last 30 minutes

That warned cell in Washington county looks nasty. Could be some decent hail stones in there.

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