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| Mesoscale Discussion 286 |
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MESOSCALE DISCUSSION 0286
NWS STORM PREDICTION CENTER NORMAN OK
0544 PM CDT TUE MAR 19 2013
AREAS AFFECTED...MAINE
CONCERNING...HEAVY SNOW
VALID 192244Z - 200245Z
SUMMARY...ONGOING SNOWFALL IS EXPECTED TO CONTINUE WITH
INTENSIFICATION LIKELY AS THE SURFACE LOW APPROACHES THE AREA. AS A
RESULT...A LARGE AREA OF HEAVY SNOW WITH SNOWFALL RATES NEAR 2
INCHES PER HOUR IS ANTICIPATED THIS EVENING.
DISCUSSION...RADAR IMAGERY AND SURFACE OBSERVATIONS REVEAL A BAND OF
HEAVY SNOW FROM PISCATAQUIS COUNTY SWD THROUGH CUMBERLAND COUNTY.
HEAVY SNOW HAS BEEN NOTED WITHIN THIS BAND FOR THE PAST SEVERAL
HOURS BUT THE BAND HAS BEEN FAIRLY TRANSIENT...PROGRESSING NEWD AT
AROUND 40 KTS. HOWEVER...THE NRN PORTION OF THIS BAND...PRIMARILY
OVER PISCATAQUIS AND SOMERSET COUNTIES...HAS RECENTLY SHOWN LESS
PROGRESSION AND SOME ADDITIONAL DEVELOPMENT HAS BEEN NOTED W OF THE
PRIMARY BAND.
ADDITIONALLY...MOST MODEL GUIDANCE INDICATES THAT FRONTOGENESIS/WAA
WILL STRENGTHEN AS THE SURFACE LOW...CURRENTLY CENTERED JUST E OF
CAPE COD... DEEPENS AS IT MOVES NEWD. AS SUCH...INTENSIFICATION OF
THE ONGOING SNOW WILL FAVOR THE DEVELOPMENT OF WIDESPREAD HEAVY SNOW
WITH SNOWFALL RATES FROM 1 TO 2 INCHES PER HOUR...PARTICULARLY
ACROSS CNTRL ME.
..MOSIER.. 03/19/2013
ATTN...WFO...CAR...GYX...
LAT...LON 43966845 43896886 43676976 43657045 43767068 43987078
44367084 44917084 45547055 46146996 46396966 46576918
46596877 46296791 45736757 44946711 44676722 44086809
43966845
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