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Coastal Storm Dec 1-2


Ralph Wiggum
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22 minutes ago, LVwhiteout said:

ChescoCoWxman - Hey Paul -  what is your wxism saying about this storm?

It never had much snow in the forecast till the 6z run overnight...

Today: Dense overcast. A chance of a mix of sleet, rain, and snow in the
 morning, then a mix of sleet, rain, and snow likely in the afternoon. High 36,
 but temperatures falling in the afternoon. Wind east around 5 mph in the
 morning, becoming 10 mph in the afternoon. Chance of precipitation 80 percent.
 Precipitation (liquid equivalent) mostly between half an inch and one inch. Snow
 or ice (on ground) accumulation about half an inch.
 
 Tonight: Dense overcast in the evening, becoming cloudy after midnight. Patchy
 light fog after midnight. A mix of rain and sleet likely in the evening, then a
 chance of a mix of rain and snow after midnight. Low 32. Wind chill ranging from
 25 to 30. Wind east around 7 mph in the evening, becoming 4 mph after midnight.
 Chance of precipitation 80 percent. Precipitation (liquid equivalent) mostly
 between a quarter and half an inch. No snow or ice (on ground) accumulation
 expected.
 
 Monday: Dense overcast in the morning, becoming cloudy in the afternoon. Patchy
 light fog. A mix of snow and rain likely. High 34. Wind north around 5 mph.
 Chance of precipitation 80 percent. Precipitation (liquid equivalent) mostly
 between half an inch and one inch. Snow accumulation 2 to 4 inches.
 
 Monday night: Dense overcast in the evening, becoming cloudy after midnight. A
 chance of snow in the evening, then a slight chance of snow after midnight. Low
 27. Wind chill ranging from 18 to 25. Wind north-northwest around 8 mph in the
 evening, becoming 11 mph, gusting to 18 mph, after midnight. Chance of
 precipitation 50 percent. Precipitation (liquid equivalent) mostly around a
 tenth of an inch. Snow accumulation about half an inch.

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Most mesos are hellbent on hanging the slp a bit farther S and nudging the heavier snows farther S. Southern Bucks, Montco, Chesco, and even Delco now potentially in play. Definitely nice to see trends in our favor to begin met winter as opposed to trending the opposite way. Cut those totals in half btw as most areas in SE PA will be fighting accums to starts during the rain to snow transition. Going to be a nowcast for my area no doubt.

wrf-nmm_asnow_neus_41.png

wrf-arw2_asnow_neus_42.png

wrf-arw_asnow_neus_45.png

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Just now, Fields27 said:

Such a strange looking snow map. 12z nam is a good bit better but it doesn't show that death band dipping down past philly.

Sent from my SM-N975U using Tapatalk
 

Most mesos are showing that deformation band in the general area. Whoever gets under that as the slp stalls will see the better snows...but you already know this. That CCB band will be somewhere in SE PA.

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Most mesos are showing that deformation band in the general area. Whoever gets under that as the slp stalls will see the better snows...but you already know this. That CCB band will be somewhere in SE PA.
Will be entertaining to watch unfold. Sure to be some surprised and equally disappointed people.

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The mesos and models now having the low stall immediately on the coast is the best case scenario for inland counties possibly including Berks. I could see the Berks area see anywhere from 0" to 6" tomorrow. The Inverted trough feature will be a nowcast event.

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