Thursday Update on Historic Blizzard

The Ensemble Models for snowfall accumulation are in good agreement this morning.  *Notice the Jackpot continues to remain very close to the DC Metro Area*

gefs_snow_ens_washdc_17

For those of you who live along/east of interstate 95, be aware that some sleet *may* mix in overnight on Friday.  Don’t worry, this doesn’t mean you will be getting only sleet….  as colder air wraps back toward the coast, any mixing will change back over to heavy snow. The entire Washington Region will receive crippling/paralyzing snowfall accumulations.

Next up the latest Operational Model Runs (images courtesy Weatherbell….. these models update about every 6 to 12 hours, depending upon the model):  They have held steady as well.

Here’s the GFS – (click on image once, then click on the smaller image that appears again and it will become a full resolution image)

gfs_6hr_snow_acc_washdc_17

Here’s the European – (click on image once, then click on the smaller image that appears again and it will become a full resolution image)

ecmwf_tsnow_maryland_16

Heres the Canadian – (click on image once, then click on the smaller image that appears again and it will become a full resolution image)

cmc_snow_acc_washdc_16

Winds are expected to really pick up Friday night and Saturday with white out conditions and power outages in areas where trees come down.  Plan accordingly in case you were to lose your power.  The areas with the highest wind guts will be along the Bay and Potomac, generally along and east of 95 to the beaches. Folks west of there could still lose power… so everyone should prepare for the worst case scenario. This is the 2nd time since the March of 1993 Super Storm aka: Storm of the Century… that Blizzard Watches have been issued in the Washington Area.

I pulled up the OPM archives for closures and the last time we had a storm like this (February 5/6 2010) there was an early dismissal on Friday with unscheduled leave, February 5th (snow was forecast to start mid to late afternoon) and then the government was closed the following Monday through Thursday.  Schools were closed for almost 2 weeks.

 

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