Monday December 14 2020

The first of two storms this week is with us this morning. A chilly rain for most of the region. Snow will mix in where there is a Winter Weather Advisory, but as we have explained for a few days it will be a wet snow. Temperatures will not drop below freezing locally until after dark. So any snow will likely melt on the roads or stick mainly on the grass.

Colder air will follow, and some icing in those northern zones tonight.  Then as the cold air settles in, we have the bigger storm moving in Wednesday afternoon.  A Winter Storm Watch is already up for the colder zones.  More advisories will be expanded as we get closer.

Winter Storm Watch Wednesday Through Thursday Morning

The brighter blue colors represent today’s Winter Weather Advisory in addition to the ‘Watch’.

December 14 Winter Storm Watch



Morning Surface Weather

December 14 weather Monday morning


Morning Temperatures 


December 14 weather morning temperatures


Radar Simulation Snapshots Today

Colder air will gradually mix in snow, but surface temperatures will remain above freezing locally. If you encounter an issue it would be in the higher mountains in western Maryland and central PA.

December 14 weather snow rain Monday 8 AM


December 14 weather snow rain Monday Noon


December 14 weather snow rain Monday 2 PM


Temperature Forecasts Today

Notice the chill, but not below freezing until after dark.  Some northern zones that are still wet, could have ice develop in the evening.

December 13 weather temperatures Monday noon



December 13 weather temperatures Monday afternoon


December 13 weather temperatures Monday night



The Big Storm: Wednesday Afternoon to Thursday Morning

Here is a look at the ECMWF Model. This is the best solution I see as it is accounting for warmer air mixing in for central Maryland.

A few people have asked about the bias or SouthEast shift I often discuss. Should that happen, we still have to consider the wind direction bringing in warmer air from the Chesapeake Bay and Atlantic Ocean.


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My First Call For Snowfall

This will be a big event for the region. Metro areas are more likely to get their burst of snow over Wednesday night into Thursday morning.

This is my low end conservative number. I will fine tune with another update after this first event passes.

December 13 winter storm Wednesday First Call


How Long Since The Last Snow at BWI

  • 342 Days Ago: January 7, 2020 = 1.5 inches
  • 654 Days Ago/ 1 year, 9 months, 13 days: March 1, 2019 = 2.3 inches
  • 663 Days Ago/1 year, 9 months, 24 days: February 20, 2019 = 4.5 inches

Only 1.8″ of snow fell all of last winter ( December 2019 to March 2020)



Temperature Outlook 

December 14 weather temperatures outlook



Winter Outlook Series

Winter Outlook 2021 Tropical Hints

Winter Outlook Polar Vortex Arctic Oscillation

Winter Outlook Solar Minimum

Early Winter October

Winter Outlook Series Weather Folklore


Winter Outlook 2021 La Nina Advisory

Winter Outlooks Farmers Almanacs



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14 Local Maryland Pages (and York PA)

We have made a page for Maryland Weather which gives you the current conditions for 14 present area locations.

Local Hourly Forecasts and Local Radar
Central Maryland
Southern Maryland




National Weather Service Adds Maryland Cecil And Garrett Counties



Maryland Weather Page

Maryland Weather 

I wanted to keep it simple. Just the basics for a quick view at any time.

Maryland Weather Just In Weather




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