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The Impact Weather Update (IWU) provides a chronological series of discussions to detail conditions expected over the next 8 hours. The IWU was designed to supplement existing NWS products by providing more frequent information in a less formal format. IWU entries will only be available when workload permits, most often on weekdays between late morning and early afternoon. When severe weather becomes imminent, IWU posts will often cease due to increasing workload. East Central Florida counties include: Volusia, Seminole, Lake, Orange, Brevard, Osceola, Indian River, Okeechobee, Saint Lucie and Martin. Please provide us with your comments concerning the IWU.

Wednesday, September 17, 2008

Posted at 8:44 AM

Edited on: Wednesday, September 17, 2008 8:55 AM

Scattered showers and thunderstorms...mainly across the interior this afternoon

A trough of low pressure across the Southeast states will approach northern sections of the state this afternoon. Deep moisture and onshore flow in the low levels will focus afternoon showers and thunderstorms across interior portions of East Central Florida as the east coast sea breeze moves slowly inland. Westerly mid layer steering flow bring storms back toward the east coast toward evening, especially north of Sebastian Inlet. The main thunderstorm hazards will be frequent lightning, gusty winds to 50 mph and possible small hail with the strongest storms.

Posted by Matt Volkmer