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2013 Mid-Atlantic Severe General Discussion


Kmlwx

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looks like a lower cape event on the gfs but it's arguably a better track (or more normal) for tornado activity etc. becomes another nor'easter.

 

of course the euro doesn't really agree.

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LWX this morning (from discussion)

 

 

 

.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
00Z OPERATIONAL GFS PROGS A SHORTWAVE LOW TO EJECT FROM COLORADO
SUNDAY NIGHT...RIDGE ALONG THE FRONTAL ZONE...AND TRACK ACROSS THE
CENTRAL MID-ATLANTIC TUESDAY NIGHT. THIS WOULD BE A FAVORABLE TRACK
FOR TUESDAY AFTERNOON/EVENING SEVERE WEATHER...INCLUDING TORNADOES
AND DAMAGING WINDS. ANY SHORTWAVE IN THE 00Z ECMWF (AS WELL AS THE
PREVIOUS 12Z RUN) IS TOO WEAK TO DEVELOP A SURFACE FEATURE.
FURTHERMORE...MOST GEFS ENSEMBLE MEMBERS DO NOT FEATURE A LOW BELOW
1005MB IN THE MID-ATLANTIC ON MONDAY. THIS GREATLY LIMITS CONFIDENCE
IN THE SEVERE THREAT FOR TUESDAY. WILL CONTINUE TO REFRAIN FROM
MENTIONING THIS IN THE HWO.
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It's seems like everyday this year when we have a chance at thunderstorms, it's ruined by too much cloud cover and showers. Seems like the same issue today, but I hope I'm wrong! Where is the cold front located right now?

 

There's really no surface front to speak of. The feature today is a mid-level shortwave that is currently over the eastern Ohio valley. This coupled with diurnal instability (sunshine) should provide the trigger for storms. From there storm mode should be isolated with developing cold pools to promote line segments.

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