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Web product 09/24-28/11

Forecast updated 12:04pm EST - 21 Sept 2011

An upper-level trough remains on top of Indiana bringing a high pressure system and
colder air into the region with highs in the 60s and later 70s and lows in the upper 40s
and 50s until next week. The high pressure system may bring sunny days with few showers 
during the weekend and mid-next week.

A low pressure system in the east will bring significant rain showers in that area. An
upper-level ridge in the west of the nation will bring warmer temperatures especially in the
Texas area where highs will be seen in the 90s.

The weather graphics below indicate conditions predicted by the GFS model
at 12 UTC of 9/24 and 9/26. The first graphic depicts 500 mb  heights (yellow contours)
and absolute vorticity (color fills). The second and third graphic indicates sea level pressure
(yellow contours) and 6h precipitation amount (color fills).

today's long-range forecast graphic was produced by Cecille Villanueva