WEATHER53

10:30pm and 26F

5pm

Currently 29.5 and falling fast after 31.8 for a high. It was OK at 2-3 clearing things but not as Ok right now

Nice pics peeps 

1pm

30.7F. Wind chills mostly in upper teens to low 30’s

6.75” remaining on snowboard.  

Temps stayed  up with winds but it took until noon to get out of the single digit wind chills. 
28 heresy 12 noon with overnight low of 18.

Temps plummet tonight with light winds to 7 to 15 

8pm

19.5 F nw wind 15 wind chill 6

High of 24.5 and currently 22.4.

1 hour ago, Weather Will said:

WB 12Z GEFS, still watching the 30th...

On the 28th/29th we will know. The pattern now dictates to the models 

3pm obs

24F which is high for the day.  Max in sun radiance measured 29.8.  Current wind chill 13F

7.5” on snowboard and 6-7.5 throughout yard 

Our scenarios brings us back to DCA. Right now in the wind and snow cover DCA is1-2 degrees differing from its surrounds. So we conclude from this snd past experience that wind homogenizes the situation.  But, on a snow covered clear and windless night DCA will be 10+ degrees milder. Where is the warmth coming from?. Not the ground, it’s got 6” snow on it,  not the surrounds as they are snow covered also. Are buildings leeching out that  much heat? Improbable.  So gonna lay  it all in the Potomac? Go ahead. I don’t.

DCA is not a NWS facility but rather FAA. FAA wants conditions around the runway for the planes. Something about that is likely the culprit where wind has an effect on smoothing temps  but radiational with low or no winds is artificially hampered.. 

Uber Impressive  Chill Warning in Effect

DCA is exact same temp at 11 am that it was at 6am-23F 

Uber!

11am

24.3 F with blowing snow pulses every 1-2 minutes, low of 18.2 

2 hours ago, AtlanticWx said:

widespread 10-12" for the entire week across moco & hoco. what a run lmfao i did not expect this — i guess that's what ample cold and blocking does

Last time we had two 5”+ in a week was Jan 2016

Lots of great weather obs  and discussion this week 

4 minutes ago, J.Mike said:

It's a shame that Ji can't enjoy this lovely week of true winter weather.

Not saying this is he but when one can’t enjoy present moments, they can’t enjoy period. 

Still in the snow shower band and have picked up 0.65  more since 5:30.  storm total 5” and 9” on snowboard from both events 

1 minute ago, Kmlwx said:

Flake size increased in this streamer (Colesville, MD). Last hurrah probably! Great way to end the day - probably iwll have to do a little light broom work on the driveway later on (shoveled earlier). 

It’s elongated and not fast moving 

6pm obs

Sniw resumed  within the  hour at about a rate of 1/3-1/2”ph  30F 

Heavy 1”+ph in Frederick 

Tomorrow the Great Blizzard of 1966  was underway.. 30moh winds gusting over 40 produced greatest drifting by far I have ever experienced. 
Consistent 4-6’ drifts everywhere. 

Snow shower approaching Frederick is intensifying.  

See if these snow showers can get in.  Generally they  need to travel from North of Martinsburg to east of the Potomac to effect DC  proper.

Pulses  from the nw keep resupplying themselves and move se so 1-2 more hours of that and now the snow showers are showing up around Martinsburg and let’s see what they can do 

2pm

31.4. Light snow.  Just hit 8” on snowboard and still 4.25 for this one 

Just now, Deck Pic said:

31/29, -SN, 3"

 

Ma*t .  I want to think about the winds tonight. We got  over 6” almost everywhere and new  3-4+ of non compacted not wet snow .  My memories of good blowers and drifters is 15-20 sustained just won’t quite do it but at 25 magic starts and gusts to 35 causes white out. 
What did you think and any others who might be versed in this?

Thanks