Sunday, January 20, 2013

5,400 Gray Dots

Today's CoCoRaHS national precipitation map was rather striking because of the lack of precipitation across the country. Of the 5,968 reports submitted as of this post, only 293 reported measurable precipitation, and of those 74 were just 0.01 inch.  There were also 264 trace reports.

A significant number of the measurable rainfall reports came from the east coast of Florida. Lake-effect snow produced some half-inch precipitation amounts and 4 to 8 inches of snow in northern Michigan. Snow also fell throughout much of Maine.

24-hour snowfall map for 7:00 a.m.local time January 20.

High pressure over much of the lower 48 states and a dry Arctic air mass pushing south is the reason why much of the country was precipitation-free.

Surface weather map for 9:00 p.m. CST January 20.

No comments:

Post a Comment