Thursday December 21 2017

We start the astronomical winter season today and it sure feels like it. The sun will be at the lowest angle in the sky of the year at it points to the Tropical of Capricorn at 11:28 AM. I have some interesting stats I will post later this morning as we celebrate some special things. We all feel the chill today and much colder air is on the way next week. But there is one blip in the pipeline. A storm with rain on Saturday will pump in warmer air, and may not rain all day if you are in Baltimore or south. So there could be some breaks at the Ravens game. Then the bottom falls out on thermometers on Christmas Day. There is still a chance for some snow and a larger storm by the end of next week.

Stats For December 21

Normal High: 44ºF

Record High: 71ºF in 2013

Normal Low: 27ºF

Record Low: 5ºF in 1942

Snow Record: 4.3″ in 1962

Sunrise: 7:23 AM

Sunset 4:47 PM

*Bay Water Temperature = 44ºF at Thomas Pt. Light House

Snow To Date (at BWI): 3.8″

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High Temperatures Today

Saturday Outlook

The storm on the way is ahead of the arctic air. We will be on the warm side and get rain… But the specific track of Low Pressure will ride along the mountains and often this keeps more of the rain inland until the Low passes. That is why morning rain may lift north and west until the storm arrives with the rain spreading back across much of central Maryland and the Eastern Shore by evening.

Storm Animation

This animation shows the flow of rain Saturday, then the push of the cold front on Christmas. This model shows a burst of light snow overnight and into Christmas morning… and I still think there is more adjusting to be done. There is a chance hanging on…

Christmas Day

Jet Stream

Temperature Outlook

Next Week- Tracking Another Storm?

I do not like pushing specific weather events more than 1 week away, but since it is holiday season I figured I would show any chance on the horizon… This is the Canadian GEM Model showing the most aggressive look at a coastal storm sequence NEXT Thursday through Saturday. Stand by…. I am sure there will be changes but also something the play out in our favor. FITF

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