December Discobs 2025

[wxdude64]

Interesting night. Went to bed 12:30 am (ish) it was 39.1 degrees, it had barely moved between 39-41 all day and evening. Woke up at 6 am, it was 55.6 degrees. Looked at the graph from overnight, it was 38.4 at 2:50 am, climbed rapidly to 56.7 by 4:35 am. 

[nj2va]

We do wind well in the mid-Atlantic

Extreme Western Allegany-Western Garrett-Eastern Garrett-Western
Grant-Western Mineral-Western Pendleton-
1144 AM EST Sat Dec 27 2025

...HIGH WIND WATCH IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
AFTERNOON...

* WHAT...West winds 25 to 35 mph with gusts up to 55 to 65 mph
  possible, with the highest gusts near the ridgetops.

* WHERE...In Maryland, Eastern Garrett, Extreme Western Allegany,
  and Western Garrett Counties. In West Virginia, Western Grant,
  Western Mineral, and Western Pendleton Counties.

* WHEN...From Monday morning through Tuesday afternoon.

* IMPACTS...Damaging winds could blow down trees and power lines.
  Widespread power outages are possible. Travel could be difficult,
  especially for high profile vehicles.

 

[Roger Smith]

5 hours ago, wxdude64 said:

Interesting night. Went to bed 12:30 am (ish) it was 39.1 degrees, it had barely moved between 39-41 all day and evening. Woke up at 6 am, it was 55.6 degrees. Looked at the graph from overnight, it was 38.4 at 2:50 am, climbed rapidly to 56.7 by 4:35 am. 

You had the last gasp of the extreme warmth that had been over the Ohio valley up to the early stages of the winter storm that developed over PA. I think Latrobe PA also maxed at around 57 F during the day. As you know it was well above 60 F in KY and parts of s IN-IL for a couple of days leading up to the Boxing Day storm in the northeast. That warmth is going to make one last run eastward on Monday before being suppressed further south. I would expect some parts of the MA to max out in low 60s by Monday afternoon-evening before falling into the high 20s and low 30s on Tuesday. 

[MillvilleWx]

2 hours ago, nj2va said:

We do wind well in the mid-Atlantic

Extreme Western Allegany-Western Garrett-Eastern Garrett-Western
Grant-Western Mineral-Western Pendleton-
1144 AM EST Sat Dec 27 2025

...HIGH WIND WATCH IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
AFTERNOON...

* WHAT...West winds 25 to 35 mph with gusts up to 55 to 65 mph
  possible, with the highest gusts near the ridgetops.

* WHERE...In Maryland, Eastern Garrett, Extreme Western Allegany,
  and Western Garrett Counties. In West Virginia, Western Grant,
  Western Mineral, and Western Pendleton Counties.

* WHEN...From Monday morning through Tuesday afternoon.

* IMPACTS...Damaging winds could blow down trees and power lines.
  Widespread power outages are possible. Travel could be difficult,
  especially for high profile vehicles.

 

Wind, heat, CAD and failure. It’s what we do best 

[IronTy]

6 hours ago, nj2va said:

We do wind well in the mid-Atlantic

Extreme Western Allegany-Western Garrett-Eastern Garrett-Western
Grant-Western Mineral-Western Pendleton-
1144 AM EST Sat Dec 27 2025

...HIGH WIND WATCH IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
AFTERNOON...

* WHAT...West winds 25 to 35 mph with gusts up to 55 to 65 mph
  possible, with the highest gusts near the ridgetops.

* WHERE...In Maryland, Eastern Garrett, Extreme Western Allegany,
  and Western Garrett Counties. In West Virginia, Western Grant,
  Western Mineral, and Western Pendleton Counties.

* WHEN...From Monday morning through Tuesday afternoon.

* IMPACTS...Damaging winds could blow down trees and power lines.
  Widespread power outages are possible. Travel could be difficult,
  especially for high profile vehicles.

 

Saw that just now.  On one hand I'm glad I won't be here but on the other hand I would like to see some snow whipped around at 65mph.  

[wxdude64]

36.3/33.8 at 10:45 pm. Forecast low for the night from NWS is 36....

[wxdude64]

8 hours ago, wxdude64 said:

36.3/33.8 at 10:45 pm. Forecast low for the night from NWS is 36....

Temp bottomed out at 34.1 around 2 am, then did a slow climb as clouds filled in. Currently cloudy at 37.7/35.6 here. 

[nj2va]

Up to 50 here with southernly winds. Hammer drops tomorrow morning. 

[Weather Will]

Glad I decided to take down the outdoor Christmas decorations today....

District of Columbia-Frederick MD-Carroll-Northern Baltimore-
Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St.
Marys-Calvert-Northwest Montgomery-Central and Southeast
Montgomery-Northwest Howard-Central and Southeast Howard-
Northwest Harford-Southeast Harford-Nelson-Albemarle-Greene-
Madison-Rappahannock-Fairfax-Arlington/Falls Church/Alexandria-
Northern Fauquier-Western Loudoun-Eastern Loudoun-Northwest
Prince William-Central and Southeast Prince
William/Manassas/Manassas Park-
1211 PM EST Sun Dec 28 2025

...WIND ADVISORY IN EFFECT FROM 9 AM MONDAY TO 1 AM EST TUESDAY...

* WHAT...West winds 20 to 30 mph with gusts up to 50 mph expected.

* WHERE...Portions of DC, central, north central, northeast,
  northern, and southern Maryland, and central, northern, and
  northwest Virginia.

* WHEN...From 9 AM Monday to 1 AM EST Tuesday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree
  limbs could be blown down and a few power outages may result.

[nj2va]

Fun week ahead for the mountains.  WWA and we’re likely to see another or WSW later in the week with the NYD clipper.

MDZ509-510-WVZ501-505-290230-
/O.NEW.KLWX.WW.Y.0031.251229T1800Z-251230T1500Z/
Western Garrett-Eastern Garrett-Western Grant-Western Pendleton-
126 PM EST Sun Dec 28 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM MONDAY TO 10 AM EST
TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 inches,
  with isolated higher amounts possible. Winds gusting as high as 65
  mph.

* WHERE...In Maryland, Eastern Garrett and Western Garrett Counties.
  In West Virginia, Western Grant and Western Pendleton Counties.

* WHEN...From 1 PM Monday to 10 AM EST Tuesday.

* IMPACTS...Plan on slippery road conditions. Widespread blowing
  snow could significantly reduce visibility. The hazardous
  conditions could impact the Monday evening and Tuesday morning
  commutes. Very strong winds could cause extensive tree damage.

[Rhino16]

1 hour ago, nj2va said:

Fun week ahead for the mountains.  WWA and we’re likely to see another or WSW later in the week with the NYD clipper.

MDZ509-510-WVZ501-505-290230-
/O.NEW.KLWX.WW.Y.0031.251229T1800Z-251230T1500Z/
Western Garrett-Eastern Garrett-Western Grant-Western Pendleton-
126 PM EST Sun Dec 28 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM MONDAY TO 10 AM EST
TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 inches,
  with isolated higher amounts possible. Winds gusting as high as 65
  mph.

* WHERE...In Maryland, Eastern Garrett and Western Garrett Counties.
  In West Virginia, Western Grant and Western Pendleton Counties.

* WHEN...From 1 PM Monday to 10 AM EST Tuesday.

* IMPACTS...Plan on slippery road conditions. Widespread blowing
  snow could significantly reduce visibility. The hazardous
  conditions could impact the Monday evening and Tuesday morning
  commutes. Very strong winds could cause extensive tree damage.

I’m a little further south right now. Some of the ndfd grids up there have 70mph gust speeds. I’m excited to have a few days of real winter after mid 40s and fog all week.

[RIC_WX]

1 hour ago, Rhino16 said:

I’m a little further south right now. Some of the ndfd grids up there have 70mph gust speeds. I’m excited to have a few days of real winter after mid 40s and fog all week.

With the kind of wind expected, power outages become an inevitability for someone.  I spent the afternoon tuning up my generator to assure it will stay on at DCL.

[nj2va]

21 minutes ago, RIC_WX said:

With the kind of wind expected, power outages become an inevitability for someone.  I spent the afternoon tuning up my generator to assure it will stay on at DCL.

18z GFS upped the ante for tomorrow with 4-6” along/west of the Allegheny Front.  Gusts 55+ for several hours - best to be prepared for power outages with that.

Shows another 6-8”+ this week after tomorrow’s event too.

[wxdude64]

16 minutes ago, nj2va said:

18z GFS upped the ante for tomorrow with 4-6” along/west of the Allegheny Front.  Gusts 55+ for several hours - best to be prepared for power outages with that.

Shows another 6-8”+ this week after tomorrow’s event too.

Closing in on blizzard levels there.

[katabatic]

7 minutes ago, wxdude64 said:

Closing in on blizzard levels there.

Oh god, please no blizzard warnings here lol. The last two were sunny and rainy. Further north, looks like a long duration lake effect event east of Ontario. Think I'm heading up there Tuesday after work, trying to split the uprights between bands. GFS paints around 80" totals for the week. Likely overdone but this is a potent front with decent anafrontal moisture so if a band can stay stationary for a period of time, crazier things have happened. It'll be my first chase of the season and I'm just itching to get up there.