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Ian

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I'm really jealous for you guys... the latest HRRR run basically shows the dream scenario for DC and DC suburbs where an intense frontogenetical band sets up and pivots right over KIAD and points SW-NE. Easy to see where its 20" inch amounts are coming from the next 15 hours.

 

URL: http://www.atmos.albany.edu/student/ppapin/hrrr.php#diag

 

 

 

 

Thanks for the post :)  I am really learning alot from you and Coastal tonight

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I'm really jealous for you guys... the latest HRRR run basically shows the dream scenario for DC and DC suburbs where an intense frontogenetical band sets up and pivots right over KIAD and points SW-NE. Easy to see where its 20" inch amounts are coming from the next 15 hours.

 

URL: http://www.atmos.albany.edu/student/ppapin/hrrr.php#diag

 

 

fgen.gif

Thanks for your insight. Great to read that!

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MESOSCALE DISCUSSION 0055   NWS STORM PREDICTION CENTER NORMAN OK   0547 PM CST FRI JAN 22 2016   AREAS AFFECTED...PORTIONS OF WV...WRN VA...WRN MD   CONCERNING...HEAVY SNOW    VALID 222347Z - 230445Z   SUMMARY...A BAND OF HEAVY SNOW WILL DEVELOP NORTHWARD ACROSS WESTERN   VA INTO EASTERN WV AND WESTERN MD OVER THE NEXT FEW HOURS. SNOWFALL   RATES OF 1-2 INCHES PER HR /WITH LOCALIZED RATES UPWARDS OF 2-3   INCHES PER HR/ WILL BE POSSIBLE.   DISCUSSION...WATER-VAPOR IMAGERY AND THE REGIONAL RADAR MOSAIC   SUGGEST A BAND OF HEAVY SNOW IS BLOSSOMING ACROSS THE MCD AREA IN   RESPONSE TO INCREASING LARGE-SCALE ASCENT...AS AN IMPULSE OVER THE   SRN APPALACHIANS CONTINUES TO ROTATE AROUND THE PERIPHERY OF THE   MATURING UPPER TROUGH. STRENGTHENING WAA AT LOW/MID LEVELS...IN   COMBINATION WITH ENHANCED FRONTOGENETIC CIRCULATIONS...WILL FAVOR A   BAND OF HEAVY SNOWFALL RATES THIS EVENING. ADDITIONALLY...LAST   VISIBLE IMAGES PRIOR TO NIGHTFALL INDICATED SMALL CONVECTIVE   ELEMENTS WITHIN THIS GROWING SNOW BAND...FAVORING ENHANCED RATES.   DUAL-POL ZDR AND KDP DATA FROM KFCX CONFIRM THAT DEEPER/STRONGER   CRYSTAL GENERATION ALOFT IS OVERSPREADING THE REGION...IN RESPONSE   TO INCREASING ASCENT WITHIN THE -10 TO -20 C LAYER. KRLX ALSO   DEPICTS SUCH SIGNATURES TO ITS EAST AND NORTHEAST. EFFICIENT CRYSTAL   GENERATION AND THEN AGGREGATION BENEATH THAT LAYER WILL FAVOR VERY   HEAVY SNOW AT TIMES...WITH LOCALIZED RATES UPWARDS OF 3 INCHES PER   HOUR AND LOW VISIBILITIES THIS EVENING.   ..PICCA.. 01/22/2016
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