Weather Will

Can someone explain why the temps look below freezing at all levels but the surface maps depict freezing rain/ sleet?

One of the experts a couple of days ago said the algorithms will have trouble distinguishing between mix/ snow when there is intense precipitation and marginal temps. WB NAM may have that issue.

WB 12Z NAM 7pm Wed. Also cooler compared to 6Z. And falls SE of DC by 10 pm

WB 12Z NAM 925 MB slightly cooler at 1pm Wed. Compared to 6Z

6Z GEFS mean low locations does not support NAM.

WB 6Z GFS surface temps upper 30s inside Beltway 8pm

WB 6Z GFS 925 7pm, 10 pm

WB 6z GFS snow map did tick NW around DC due to mixing/rain 7pm-10pm

WB 6Z GFS, 925 did tick NW at Wed 7pm

Busy work week before the holidays..GN... NAM is NAM. Hope GFS holds..

WB 0z NAM snow totals

10 pm, ( 7pm won’t show but it is warm)

4 pm

WB 0Z NAM 1pm Wed

NWS indicated NOAA plane would be doing synoptic flights for the storm. Will that data be in 0z or is this for tomorrow sometime?

WB EURO 18Z

WB EURO 4pm Wed.

WB 18z EURO

WB 18z GEFS

18Z WB GFS...looking even better.

Appetizer courtesy of NWS: WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TO 3 PM EST MONDAY... * WHAT...Snow expected. Total snow accumulations ranging a coating to around one inch in the valleys, with 1 to 3 inches in the higher elevations of Carroll County, and 2 to 5 inches in the Catoctin Mountains. * WHERE...Frederick MD and Carroll Counties. * WHEN...From 6 AM to 3 PM EST Monday. Rain will change to snow, most likely between 9 AM and 11 AM Monday morning. The heaviest snow is expected late Monday morning through early Monday afternoon. * IMPACTS...Plan on slippery road conditions, especially across the higher elevations. The hazardous conditions could impact the morning commute. * ADDITIONAL DETAILS...Visibility may be reduced below one mile at times in falling snow.

Having lived in this area my entire life of over 50 years, could be my biggest storm ever in December!!!!

Better than 0z in the game, off for a walk

Colder at surface as well, DCA not above 34 at surface

7 and 10pm colder