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March 2-3 Storm Disco, Part II


stormtracker

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FWIW, 15z SREFs 2mT maps move 32 degree line through DCA at 06z MON (1am Mon morning) and are at -5c by 12z MON (7am MON)  -5c is 23F

 

15z SREFs also suggest that at 09z TUES (4am TUES) DCA is at 5 degrees

 

0c 850 line takes longer to come through (11z or so at DCA) but all I take from the SREFs is that they are slowly but surely coming around to the EURO

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Other two products are based off the range of possibilities and cover confidence factors for certain thresholds of snowfall. These thresholds are the result of work done with emergency managers in determining what snow amounts cause problems or lead to uptick in resources and personnel and issues on roadways etc...

Or whether to treat a road first or later.  If schoolbuses are running, treating The Hill of Doom by my house in Arlington VA is a priority.  If deep snow forecasts cause schools to not open, the treatment priority drops.

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