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February 12-13 Storm, Part II


stormtracker

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wpc heavy snow disco from 540 pm

LOW TO MODERATE PROBABILITIES OF 4 TO 8 INCHES SNOW WILL ALSO

ACCOMPANY THE WESTERN EDGES OF THE PRECIPITATION SHIELD TO INCLUDE

THE EASTERN FACING SLOPES OF THE CENTRAL AND SOUTHERN APPALACHIANS

AND FOOTHILLS TOWARD WASHINGTON DC...WITH A SLIGHT RISK OF A FOOT

OF SNOW FOR CENTRAL-WESTERN VIRGINIA. OTHER SOLUTIONS FOR THE LOW

TRACK AND ASSOCIATED SNOW/ICE WERE CONSIDERED BUT ULTIMATELY

DISCOUNTED DUE TO MODEL CONSENSUSING AND CONSIDERING THE

PROGRESSIVE NATURE OF THE PATTERN THAT WOULD HELP TO RULE OUT THE

MOST WESTWARD SOLUTIONS. OF THESE...THE ECMWF CONTINUES TO LIE

WITHIN THE WESTERN ONE QUARTER TO ONE FIFTH OF THE SOLUTION

ENVELOPE...WITH ABOUT A 100 MILE DIFFERENCE BETWEEN THE ECMWF AND

GFS LOW TRACKS BY 00Z FRI. CLEARLY....THIS DIFFERENCES HAS LARGE

IMPLICATIONS FOR ICE/SNOW ALONG THE MID-ATLANTIC REGION

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Unfortunately the useful range of models in your backyard is the exact time it take the shortwave to get from the west coast to here, so quick moving ones like this don't have as much of a window.  I can see it jumping 75 miles either way between tonight and 12z tomorrow.  I hope the euro is correct but it wasn't good last time it was an outlier at this range.

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Unfortunately the useful range of models in your backyard is the exact time it take the shortwave to get from the west coast to here, so quick moving ones like this don't have as much of a window.  I can see it jumping 75 miles either way between tonight and 12z tomorrow.  I hope the euro is correct but it wasn't good last time it was an outlier at this range.

I'd argue that the GFS is more of the outlier.  The Op Euro matches it's ENS more than the GFS matches it's.  The other models seem to be a mix of the two.

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