December 13 Cold Weekend Leads To Sunday Icy Mountains With Rain By Evening For Cities

December 13, 2024

Friday Morning Report

As this round of cold air settles in for a couple of days, one thing worth noting that might not get a lot of attention will be the near record High Pressure. The dome of quiet weather will be very strong! While it will bring back the sun with the cold air, it may also bring sensitive people discomfort. This is the kind of weather that can result in headaches or migraines, body aches, and dry skin. It is the reverse weather but similar impact to ‘feeling’ a storm approaching.

It will also allow for better viewing of the peak Gemini Meteor Shower and possibly the growing reports of mysterious drones reaching the Mid-Atlantic.

On Sunday, the next storm will catch up to the cold air and produce snow and freezing rain in the mountains. By evening, it should be just chilly rain in metro areas.

Next week will bring more rain systems and a few days of warming.

Local Morning Temperatures

Morning Surface Weather

The last part of this system is the arctic cold front that swings through this morning. There have been some flurries and a LOT OF WIND!

The cold temps and wind chills will be the story for the rest of the day.

Satellite Loop

The band of light snow around Pittsburgh and the nearby mountains is part of this jet streak producing clouds this morning.

This Enhanced Infrared view shows more clouds north of Baltimore with clearing to the south.

Wind Forecast: 7 AM to 7 PM

Much lighter wind today…

Afternoon Temperatures

CLIMATE DATA: Baltimore

TODAY December 13

Sunrise at 7:18 AM

Sunset at 4:44 PM <— This will begin to get later tomorrow as days continue to get shorter.

Normal Low in Baltimore:  30ºF

Record 8ºF in 1960

Normal High in Baltimore: 48ºF

Record 72ºF 2015

Baltimore Drought Update

• 7.21 inches BELOW AVERAGE rainfall since September 1st
• 7.69 inches BELOW AVERAGE rainfall since January 1st

SATURDAY DECEMBER 14

Near Record High Pressure in Canada (1051mb). Even this 1049 mb in southern PA is VERY HIGH on the barometer.

This weather pattern can bring very dry sinking air and be uncomfortable if you are vulnerable to:

• Headaches/migraines
• Body Aches
• Dry skin

Morning Temperatures at 7 AM

Afternoon Temperatures at 3 PM

Sunday Morning To Wednesday Morning

A new series of storm systems will set up for a few days.

As it bumps into this strong High Pressure and cold air, it will begin with an icy mix in the mountains and perhaps northern suburbs later on Sunday.

Rain is expected for the cities.. then we all get into the warmer flow through mid-week.

Snapshots

Sunday Afternoon

If there is any impact, it will be near and west of I-81.

Sunday Evening:

Still watching the cold air damming and snow or ice for the mountains of Maryland to Central PA. Rain will expand for the rest of us.

Monday

Tuesday

Precipitation Total (for this phase)

Mostly UNDER 1 inch

LONGER RANGE OUTLOOK

I shared this on social media yesterday with the message that it will not play out like this:

IT HAS ALREADY CHANGED – AS EXPECTED!

I will have an update on my social channels during the day.

7 Day Forecast

The next storm will bring ice and snow for the mountains, but rain in the metro areas later Sunday.

Rain almost every day next week with a series of storms. They will pump in warm air and then the pattern change ends next week.

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RESTATING MY MESSAGE ABOUT DYSLEXIA

I am aware there are some spelling and grammar typos and occasional other glitches. I take responsibility for my mistakes and even the computer glitches I may miss. I have made a few public statements over the years, but if you are new here, you may have missed it: I have dyslexia and found out during my second year at Cornell University. It didn’t stop me from getting my meteorology degree and being the first to get the AMS CBM in the Baltimore/Washington region.

One of my professors told me that I had made it that far without knowing and to not let it be a crutch going forward. That was Mark Wysocki, and he was absolutely correct! I do miss my mistakes in my own proofreading. The autocorrect spell check on my computer sometimes does an injustice to make it worse. I also can make mistakes in forecasting. No one is perfect at predicting the future. All of the maps and information are accurate. The ‘wordy’ stuff can get sticky. 

There has been no editor who can check my work while writing and to have it ready to send out in a newsworthy timeline. Barbara Werner is a member of the web team that helps me maintain this site. She has taken it upon herself to edit typos when she is available. That could be AFTER you read this. I accept this and perhaps proves what you read is really from me… It’s part of my charm. #FITF