Jan 182010
 
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Here’s how it shapes up:

Tonight            Heavy Snow
Tuesday            Snow
Tuesday Night      Heavy Snow
Wednesday          Heavy Snow
Wednesday Night    Heavy Snow

The National Weather Service defines heavy snow as:

  • snowfall accumulating to 4″ or more in depth in 12 hours or less; or
  • snowfall accumulating to 6″ or more in depth in 24 hours or less

That’s a lot of snow for that many days. I don’t know how they will define Thursday and Friday. Maybe Monster Snow. Here is the GFS model from the Navy’s NOGAPS site. They use reds and yellows to show heavy amounts. Isn’t it pretty?

GFS Precipitation Model from US Navu NOGAPS site. For Thursday night to Friday morning.

GFS Precipitation Model from US Navu NOGAPS site. For Thursday night to Friday morning.

That is the 12 hours ending Friday morning about 5am. The 12 hours before and after are just as pretty. If it comes as snow, we are looking at 2 feet in less than 24 hours.

I hope you are ready. Here is a great mesage from the Coconino County: Prepare for Extended Snow

Please, let me (stu-in-flag@stu-in-flag.net) and the National Weather Service hear your snow reports.

The National Weather Service in Flagstaff needs your snow reports. Here is a pdf that tells you how to report:

snowreports.pdf (mirrored on my site)

snowreports.pdf (on the NWS site)

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