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Pittsburgh PA ❄️ Winter 2017-2018


north pgh

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We got NAM'd.

Here's the 3K through Saturday night:

HIMmqou.png

 

Here's the 18Z GFS for the same:

NNLWxI2.png

I'm more inclined to believe the GFS.  The retreating high pressure isn't in a great spot to keep the warm tongue at bay, as far as I can tell.  The NAM keeps it frozen for the duration of the event, or just about, and I think that's the primary difference.  GFS has a transition scenario.  The NAM has led the way a few times this winter, but it is also usually too wet.  I guess we'll see if the NAM stays on-board.

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40 minutes ago, jwilson said:

We got NAM'd.

I'm more inclined to believe the GFS.  The retreating high pressure isn't in a great spot to keep the warm tongue at bay, as far as I can tell.  The NAM keeps it frozen for the duration of the event, or just about, and I think that's the primary difference.  GFS has a transition scenario.  The NAM has led the way a few times this winter, but it is also usually too wet.  I guess we'll see if the NAM stays on-board.

I think the main thing going for the NAM this season, is the meso-type nature many of the storms have exhibited so far. This weekends storm looks to be in the NAM's wheelhouse again.

It would be nice to score another win during this dissapointing pattern.

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This has definitely been a “west of city” winter. Been a few storms where either rain changed to snow, or the tongue affected east more. Also, was that little surprise gem a few days ago.

have a feeling east will do better with this. 18Z NAM had close to 8” at LBE.

So maybe we can eek out 2-4” west to east, with some upside if things go right. 

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Severe Thunderstorm Warning

Severe Weather Statement
National Weather Service Pittsburgh PA
658 PM EST THU FEB 15 2018

PAC051-160015-
/O.CON.KPBZ.SV.W.0001.000000T0000Z-180216T0015Z/
Fayette PA-
658 PM EST THU FEB 15 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EST
FOR SOUTHEASTERN FAYETTE COUNTY...

At 658 PM EST, a severe thunderstorm was located 8 miles northwest of
Ursina, or 11 miles southeast of Connellsville, moving east at 50
mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar.

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

Locations impacted include...
Farmington...                     Chalkhill...
Ohiopyle...                       Mill Run...

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 3978 7936 3979 7938 3978 7939 3977 7938
      3976 7940 3975 7939 3974 7941 3973 7939
      3972 7939 3983 7966 4000 7953 3996 7935
      3986 7942 3982 7937 3980 7937 3979 7935
TIME...MOT...LOC 2358Z 278DEG 45KT 3992 7942

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

$$
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12 minutes ago, JPOracle said:

Lots of power outages and damage reported from locals down there in Uniontown, i think we had a tornado down there in that area, and the night isn't over yet, these spin ups look likely all night

Yeah.. does sound that way. Roofs blown off, garage got crushed, and I heard something about a couple trailers demolished.  Assume there will be a damage survey.

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2 hours ago, north pgh said:

12Z NAM is moving our sat eve storm south. If trend continues we will be looking at an inch or so. It wasn't going to be a big storm anyway but was hoping for a little more.

Agree but remember were going to be the 70s Tuesday with severe thunderstorms possible again

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5 hours ago, Burghblizz said:

Uniontown tornado confirmed. Crazy, because that is the first Pgh area tornado in February in 50 years.

(except for those Daily spinups near Creighton n ‘at)

hahahaha real funny, not daily honestly maybe once every while with strong thunderstorms, it's the steam plants i swear,  steam currents cause some tornado genesis, type factors for landspouts and non-supercell tornadoes

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Public Information Statement
National Weather Service Pittsburgh PA
542 PM EST Fri Feb 16 2018

...TORNADO CONFIRMED NEAR UNIONTOWN IN FAYETTE COUNTY WESTERN
PENNSYLVANIA...

Location...Uniontown in Fayette County western Pennsylvania
Date...02/16/2018
Estimated Time...643 PM EST
Maximum EF-Scale Rating...EF1
Estimated Maximum Wind Speed...105 mph
Maximum Path Width...0.25 miles
Path Length...2 miles
Beginning Lat/Lon...39.9087N / -79.727386W
Ending lat/Lon...39.90087N / -79.696107W
* Fatalities...0
* Injuries...0

* The information in this statement is preliminary and subject to
change pending final review of the event(s) and publication in
NWS Storm Data.

...Summary...
The National Weather Service in Pittsburgh PA has confirmed a
tornado in Uniontown and North Union Township in Fayette County 
western Pennsylvania on 02/16/2018.

The tornado started near the intersection of Phillipi Avenue and 
Pittsburgh Street then traveled eastward for two miles before 
lifting near Kennedy Street. The worse damage was located between 
Monroe avenue and North Gallatin avenue where several buildings 
lost either part or their entire roof. A four level senior living 
building lost nearly half its roof. There was also numerous power 
lines down and a destroyed car port on North Gallatin Avenue. 
Several homes in the Greenpoint / Laurel estates area suffered 
damage to their roofs as well. The track just missed Laurel 
Highlands high school and continued just to the south of the 
school and lifted in the Woodview Terrace area. In that region, 
tree damage occurred. Through the entire path of the storm, 
hardwood trees were snapped or uprooted. Several pine trees were 
uprooted as well. 

This is the first confirmed tornado in the Pittsburgh area of
responsibility in February since 1950 when records commenced. This
is the 11th tornado to hit Fayette county since 1950 and the 3rd
EF1 tornado. This marks the third year in a row in Pennsylvania
with at least one February tornado:

2016: Lancaster and Bradford
2017: York, Luzerne, and Lackawanna
2018: Fayette

This information can also be found on our website at 
weather.gov/pittsburgh. Additional severe weather history can be
found at weather.gov/pittsburgh/torclimo

For reference: the Enhanced Fujita Scale classifies tornadoes
into the following categories:

EF0...Wind speeds 65 to 85 mph
EF1...Wind speeds 86 to 110 mph
EF2...Wind speeds 111 to 135 mph
EF3...Wind speeds 136 to 165 mph
EF4...Wind speeds 166 to 200 mph
EF5...Wind speeds greater than 200 mph

$$
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