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E PA/NJ/DE/Oak Hill Banter/Non Storm OBS thread


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mcd1347.gif

 

 

MESOSCALE DISCUSSION 1347
NWS STORM PREDICTION CENTER NORMAN OK
0525 PM CDT THU JUL 09 2015

AREAS AFFECTED...ERN PA...NJ...NRN MD/DE

CONCERNING...SEVERE THUNDERSTORM WATCH 398...

VALID 092225Z - 100000Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 398
CONTINUES.

SUMMARY...STRONG WIND GUSTS PRIMARILY PRODUCING TREE DAMAGE WILL
REMAIN PROBABLE AS A SMALL QLCS EVOLVES E FROM WW 397 INTO WW
398...MAINLY ACROSS SERN PA AND MOST OF NJ INTO NRN MD/DE.

DISCUSSION...MEASURED WIND GUSTS OF 35-45 KT HAVE BEEN COMMON WITH
PASSAGE OF THE QLCS ACROSS S-CNTRL PA/N-CNTRL MD...REF
KMDT/KCXY/KDMW/KLNS METARS. DOWNSTREAM AIR MASS REMAINS RELATIVELY
WARM /OUTSIDE OF THE IMMEDIATE COASTAL AREA/...WITH SURFACE
TEMPERATURES IN THE LOWER TO MIDDLE 80S. THIS SHOULD BE SUPPORTIVE
OF CONTINUED DOWNWARD MOMENTUM TRANSPORT OF AROUND 40-45 KT 3-KM AGL
WLY FLOW /AS SAMPLED BY LWX VWP DATA/. GIVEN THE NEARLY
PERPENDICULAR NATURE OF MID-LEVEL FLOW TO THE ORIENTATION OF THE
LINE /ESPECIALLY ACROSS SERN PA/...THE RISK FOR STRONG WIND GUSTS
MAY BE GREATEST TOWARDS THE PHILADELPHIA AND TRENTON AREAS AROUND
00Z.

NRN PORTION OF WW 398 ACROSS NERN PA MAY STRUGGLE TO REALIZE STRONG
WINDS GIVEN PREDOMINANT STRATIFORM CHARACTER AND WEAKER INSTABILITY
WITH NRN EXTENT.
 
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Wow, this is one long anvil, lol. I can hear some light rumbles and felt a little vibration.

 

That's how it started here.  A couple low rumbles.  Then the rains came with some wind, thunder lightning.  But we are now going through a round 2 with alot of lightning and thunder plus the rain.  Mt. Holly put up a Flood Advisory for this area.

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Yeah, I'm starting to see flashes.

EDIT: Just saw some lower level clouds pass by and I noticed they were going in the opposite direction the storm was moving? Eh, probably just weenie thoughts but i thought that was interesting. Rumbles getting louder,

Should of known that it was a sign for that spin up. Pretty tight couplet along with low correlation coefficient values turning the time probably means there was a tornado.

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A completely unexpected strike I captured a little while ago.  Was shooting the cumulonimbus way off in the distance because it was lighting up like a Christmas tree, and then this strike came out of nowhere.  

 

11705471_10204651416826696_8434541740023

awesome picture! I had a strike hit a football field away from my condo way after the storm passed as well.

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Here we are in mid-July and no 90+ days here in NW Chester County. This coming Sunday July 19th will be 2 years since we last hit the 90 degree mark - 89.7 on July 19, 2013. The highest so far this month was the 83 yesterday - KMQS also without a 90+ day has hit 84 for their highest so far this month,

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