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August 2012 Obs/Disc


Ellinwood

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sref/nam are certainly more bullish at this pt than for the last event. im a little tweaked by the timing though as it seems kinda late. not sure we'll hold discretes that long. ideal case maybe a line with a few ahead? dreaming i suppose. now i just need a tor to pass in a good framing location near a monument.

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sref/nam are certainly more bullish at this pt than for the last event. im a little tweaked by the timing though as it seems kinda late. not sure we'll hold discretes that long. ideal case maybe a line with a few ahead? dreaming i suppose. now i just need a tor to pass in a good framing location near a monument.

The Wash Monument was already damaged by the earthquake...why not finish it off with a tor. :P

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they really like the 0z-3z timeframe.. the ehi band rolls east prior but maximizes around then. 0-1k is pretty high particularly across northern md. maybe a storm will track in about the same place as the one we got fri and drop something.

skeptical on that timing.. but bump it forward a bit? im guessing there must be some evening llj influence in there but have not looked that hard.

post-1615-0-43155200-1344918437_thumb.pn

post-1615-0-55017200-1344918441_thumb.pn

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Expecting a storm or MCS tomorrow. Maybe some hail, not a strong LLJ so I doubt any Tornados.

Given the models are at least somewhat correct, that is not a environment conducive for an MCS. Way to much backing in the low levels. Hail sure, normal chance. Your right not a strong LLJ but any storm around 0z sure will be corkscrewing with the kind of Hodo the NAM is showing.

PS. The plurality of Tornado is Tornadoes

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0600 SPC disco

..MID-ATLANTIC REGION

WHILE ONGOING CLOUD COVER -- AND PERHAPS EARLY-PERIOD PRECIPITATION

-- SHOULD HINDER HEATING AT LEAST SOMEWHAT...SOME AFTERNOON

DESTABILIZATION IS FORECAST ACROSS THE MID-ATLANTIC REGION AND SWD

ACROSS THE CAROLINAS -- AIDED BY A MOIST BOUNDARY LAYER.

WHILE THE SURFACE PATTERN IS FORECAST TO REMAIN GENERALLY WEAK...THE

NAM -- AND TO SOME DEGREE THE 4 KM WRF AND THE GFS -- SUGGEST A WEAK

LOW INVOF THE NRN VA/MD AREA. THIS LOW -- AND THE BACKED LOW-LEVEL

FLOW JUST N OF IT -- COULD FOCUS AN AREA OF STRONGER STORMS DURING

THE AFTERNOON. WHILE MID-LEVEL FLOW IS PROGGED TO REMAIN MODERATE

AT BEST...THE BACKED LOW-LEVEL FLOW COULD YIELD A SMALL ZONE OF

ENHANCED POTENTIAL FOR A TORNADO OR TWO...ALONG WITH BROADER THREAT

FOR LOCALLY GUSTY/DAMAGING WINDS. WHILE A LESSER THREAT APPEARS TO

EXIST SWD ACROSS THE CAROLINAS...WILL FOCUS THE HIGHER

PROBABILITY/SLIGHT RISK THREAT ACROSS ERN PA AND INTO THE MD/NRN

VA/DE VICINITY THROUGH EARLY EVENING.

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LWX morning disco

AREA FORECAST DISCUSSION...CORRECTED

NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC

409 AM EDT TUE AUG 14 2012

.NEAR TERM /THROUGH TONIGHT/...

LARGE-SCALE TROUGH WILL INFLUENCE THE ERN CONUS TDA. PRIMARY

SHORTWAVE TROUGH OVER THE GREAT LAKES AND MIDWEST REGIONS WILL

PROGRESS EWD TDA. DEEP SLY FLOW AHEAD OF THE TROUGH AND WEST OF THE

WRN ATLANTIC RIDGE WILL DRAW WARM...MOIST AIR INTO THE MID-ATLANTIC

STATES TDA.

A LEADING SHORTWAVE TROUGH EMBEDDED IN THE SRN STREAM IS MOVING THRU

THE CENTRAL APPALACHIANS AND MID-ATLANTIC STATES ERY THIS MRNG.

WIDESPREAD SHOWERS HAVE DEVELOPED OVNGT WEST OF I-95 IN RESPONSE TO

MID-LVL PVA AND LLVL ISENTROPIC LIFT AHEAD OF THE TROUGH. WARM NOSE

JUST ABOVE THE SHALLOW NOCTURNAL BOUNDARY LAYER HAS PROMOTED

SUFFICIENT ELEVATED INSTABILITY /MUCAPE BETWEEN 500-1000 J/KG/ FOR

ISOLD TSTMS AS WELL. PRECIP WILL OVERSPREAD THE DC AND BALTIMORE

METRO DURING THE ERY MRNG HRS BEFORE ENDING FROM SW TO NE LATER

THIS MRNG AS THE SHORTWAVE TROUGH MOVES TO OUR NE. SUBSIDENCE

BEHIND THE TROUGH SHOULD RESULT IN A MOSTLY DRY PERIOD FROM MID

MRNG TO LATE MRNG.

SYNOPTIC COLD FRONT WILL MOVE INTO THE OH VLY THIS AFTN. FCST MODELS

SHOW DEVELOPMENT OF A PRE-FRONTAL/LEE SFC TROUGH BY THIS AFTN. THE

00Z NAM IS MOST ROBUST WITH SFC PRESSURE FALLS NEAR THE BOUNDARY AS

A WAVE OF LOPRES DEVELOPS OVER NRN VA AND CENTRAL MD THIS AFTN.

BACKED SELY FLOW AHEAD OF THE TROUGH WILL PROVIDE A MOIST AIRMASS

EAST OF THE BLUE RIDGE...WITH SFC DEWPOINTS IN THE UPPER 60S AND

LOWER 70S.

BREAKS IN CLOUD COVER ARE EXPECTED AROUND MIDDAY. CONVERGENCE NEAR

THE SFC TROUGH AND MODEST DESTABILIZATION WILL HELP INITIATE

CONVECTION OVER THE HIGHER TERRAIN DURING THE ERY TO MID AFTN.

STORMS ARE EXPECTED TO SPREAD EWD INTO THE I-95 CORRIDOR LATE THIS

AFTN AS A MESOLOW DEVELOPS. THE BEST TIME TO SEE SVR WX WILL BE

LATE THIS AFTN AND EVE SINCE ERY-DAY CLOUD COVER WILL LIKELY

DELAY DESTABILIZATION. THERE IS STILL UNCERTAINTY REGARDING THE

COVERAGE OF SVR STORMS THIS AFTN DUE TO THE MRNG CLOUD COVER.

THERE IS A THREAT FOR DAMAGING WINDS. FCST HODOGRAPHS SHOW THE

SETUP FOR TORNADOES WILL BE MOST FAVORABLE IN NORTH-CENTRAL AND

SRN MD AS WINDS BACK TO SELY NEAR THE SFC BOUNDARY.

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I was a bit surprised to see the 5% tornado risk pop up in the 6z update considering the weak speed shear, but with surface winds out of the SE/ESE curving up to the WSW along with 1500-2000+ CAPE I could see the justification for it. Haven't seen directional shear that good (with severe potential) in our region in a long time.

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Ef5s for me

:)

Good luck today. I wish the wind speeds were higher for you guys. You planning on chasing today (sorry if you already talked about your plans earlier in the thread)?

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:)

Good luck today. I wish the wind speeds were higher for you guys. You planning on chasing today (sorry if you already talked about your plans earlier in the thread)?

Naa, gotta work. It might be tempting tho.. Maybe something will come to me. :P

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F work. lol

The pictures of the last storm were stunning and the video Mark posted was awesome.

Yeah.. I was hoping for these contours last week. ;) Damn weather. If it was next week I'd go as my boss will be in China. Thanks, too!

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