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St. Paddy's Day Storm Obs


nj2va

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I looked at your post and was like, "wha???".  Then I looked outside.  Confirmed. 

 

 

Not reaching the ground here yet, but it's obviously close as the planes flying into BWI are being obscurred as they descend.  Kinda neat actually

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post-1389-0-68936000-1395004142_thumb.gi

From SPC:

 

 

 

MESOSCALE DISCUSSION 0195
NWS STORM PREDICTION CENTER NORMAN OK
0328 PM CDT SUN MAR 16 2014

AREAS AFFECTED...PORTIONS OF CENTRAL/ERN WV INCLUDING THE
PANHANDLE...CENTRAL/NRN VA...MUCH OF MD...DC

CONCERNING...HEAVY SNOW

VALID 162028Z - 170230Z

SUMMARY...SNOW WILL DEVELOP THROUGH EARLY EVENING WITH RATES OF ONE
INCH/HR DEVELOPING BY...AND ESPECIALLY BEYOND...02Z.

DISCUSSION...A LARGE AREA OF PRECIPITATION CONTINUES TO LIFT NEWD IN
ASSOCIATION WITH ISENTROPIC LIFT AHEAD OF A DE-AMPLIFYING UPPER LOW
OVER THE MID-MS VALLEY. A DIFFUSE SFC LOW...CURRENTLY OVER NERN
MS...WILL MOVE INTO THE SRN APPALACHIANS BY 02Z. RESULTING N/NE
LOW-LEVEL FLOW WILL CONTINUE TO ADVECT VERY DRY AIR INTO THE
DISCUSSION AREA...AND INITIALLY DRY LOWER LEVELS OF THE ATMOSPHERE
WILL COOL/SATURATE WITH TIME ALLOWING FOR SNOW TO BECOME THE
DOMINANT P-TYPE...BECOMING WIDESPREAD DURING THE EVENING HOURS.
LATEST GUIDANCE CONTINUES TO DEPICT A STRENGTHENING BAROCLINIC ZONE
ACROSS THE DISCUSSION AREA THIS EVENING WITHIN CONFLUENT 700 MB
FLOW...WITH DEFORMATION-INDUCED FRONTOGENESIS EXPECTED TO DEVELOP
WITHIN THE 800 MB TO 700 MB LAYER. MESOSCALE BANDING WILL LIKELY
PRODUCE SNOWFALL RATES OF ONE INCH/HR BY...AND ESPECIALLY
BEYOND...02Z.


..BUNTING.. 03/16/2014


ATTN...WFO...PHI...AKQ...LWX...RNK...PBZ...RLX...

 

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Corroborating with the SPC said, it looks like some really good frontogenetically induced banding (due to deformation and confluence) is occurring as far as the northern edge of the precipitation shield in southern Ohio. Folks in the DC metro area should be able to see these type of bands for the next 6-12 hours which could locally enhance rates.

 

codnexlab.NEXRAD.ILN.N0Q.20140316.2110.0

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Corroborating with the SPC said, it looks like some really good frontogenetically induced banding (due to deformation and confluence) is occurring as far as the northern edge of the precipitation shield in southern Ohio. Folks in the DC metro area should be able to see these type of bands for the next 6-12 hours which could locally enhance rates.

You're way off base here...this is 3/3 all over again. :P

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