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January 19-21 MW/GL/OV Storm Observation Thread


Guru Of Reason

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MESOSCALE DISCUSSION 0039

NWS STORM PREDICTION CENTER NORMAN OK

0236 PM CST THU JAN 20 2011

AREAS AFFECTED...PORTIONS OF THE MIDDLE OHIO VALLEY REGION

CONCERNING...HEAVY SNOW

VALID 202036Z - 202330Z

BANDS OF MODERATE TO HEAVY SNOW WILL OVERSPREAD PORTIONS OF THE

MIDDLE OHIO VALLEY REGION THROUGH LATE AFTERNOON...WITH RATES UP TO

1 INCH PER HOUR EXPECTED.

LATEST OBSERVATIONS INDICATE THAT A BAND OF MODERATE SNOW IS

DEVELOPING ALONG THE INTERSTATE 71 CORRIDOR FROM CNTRL OHIO INTO

NWRN KY....WITH AREAS OF LIGHTER SNOW ACROSS S-CNTRL OHIO. THIS

ACTIVITY IS BEING DRIVEN BY DEEP-LAYER ASCENT AHEAD OF A TROUGH

SWINGING THROUGH THE GREAT LAKES AND OHIO VALLEY REGION. SNOWFALL

RATES ARE FORECAST TO INCREASE THROUGH THE REMAINDER OF THE

AFTERNOON AS THE STRONG ASCENT PROGRESSES EASTWARD WHILE BEING

AUGMENTED BY INCREASING 700-MB FRONTOGENESIS. FORECAST SOUNDINGS

THROUGH LATE AFTERNOON INDICATE THAT THE ASCENT WILL COINCIDE WITH

RELATIVELY DEEP AND SATURATED DENDRITIC GROWTH ZONES TO PROMOTE

EFFICIENT SNOW GROWTH. ADDITIONALLY...MODEL GUIDANCE SUGGESTS THE

DEVELOPMENT OF WEAK SLANTWISE INSTABILITY BY 00Z ACROSS PORTIONS OF

EASTERN OHIO...WHICH WILL FURTHER SUPPORT MESOSCALE BANDING AS THE

ACTIVITY SHIFTS EASTWARD. AS SUCH...BANDS OF MODERATE TO HEAVY SNOW

ARE FORECAST TO AFFECT THE DISCUSSION AREA THROUGH LATE

AFTERNOON...WITH RATES UP TO ONE INCH PER HOUR EXPECTED.

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Got about 3 inches now and still falling. Should easily get 4-5 total.

my guess as well. looks like cmh might end up being the sweetspot.....cincy to dayton too.

the one time they should have cancelled my son's bball game they didnt'. Snowing like hell, roads covered now i get to go drive in this crap at the worse time of day. :axe:

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Is it me or is the radar not picking up on the intensity of the snow? Is there a mode you can use on Gr3 to do better?

Appears heaviest snows are falling in a line from nw of cinci to yng along and south of that line. like this. Of course there is heavy snow se OH too, but never seen anyone in here from there..

post-1236-0-90873400-1295562021.jpg

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Storm total just north of 2" here. Not sure what the actual ratio is since it looks like LAF is too low on precip again (0.06" which would work out to ratios better than 30:1...doubtful). Let's see what my buddy on the other side of town comes up with.

2.2", which puts us north of 30" for the season. 40" or bust.

I see there could be gusts to 30MPH tonight/overnight...wouldn't want to be out in the rural areas tonight with this powder blowing around.

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