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Posted at 3:30 PM ET, 06/29/2009

PM Update: Mild with Low Humidity

By Ian Livingston

Afternoon showers and thundershowers possible Tuesday

* VORTEX2 Gets Useful Data | Lightning Safety *

A downsloping west wind has brought lower humidity and a rather fine day along for the ride. Highs are now reaching the mid-80s most locations as a modest breeze keeps things a bit fresh. The rest of the day, into the evening, appears to be about as good as it gets for the end of June around here, so enjoy the low humidity and mild temperatures outside if possible!

Through Tonight: Most spots should be headed back through the 70s by sunset as temperatures ultimately bottom out near 60 in the cooler suburbs to the mid-and-upper 60s downtown. Expect scattered clouds and a light west wind through the night.

Tomorrow (Tuesday): Tuesday starts pretty sunny, but cold air aloft will promote clouds and some showers or thundershowers as the day progresses. The second half of the day should end up partly-to-mostly cloudy with scattered showers possible during the afternoon and evening time period. Sky cover should help cap highs in the low-to-mid 80s.

See Jason Samenow's full forecast through the Fourth of July weekend
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GOES-O launches from Florida on Saturday.

GOES-O: NASA launched Geostationary Operational Environmental Satellite-O (GOES-O) on Saturday, after weather delayed the planned Friday launch. GOES satellite's continually provide observational data for 60 percent of the Earth, including the continental U.S. GOES-O is still headed toward orbit some 22,000 miles above earth and will be designated GOES-14 once in orbit. For now, GOES-O/14 will be stored in orbit, ready to activate and patrol for severe weather once one of its predecessors degrades or exhausts its fuel.

To learn more about the launch and get updates on its travels, see and follow NASA on Twitter. Also, check out operational GOES products.

By Ian Livingston  | June 29, 2009; 3:30 PM ET
Categories:  Forecasts  
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Next: Forecast: Some Sun and Some Showers


driving to TN tomorrow. how's it look along 1-81 then 1-40 to Knoxville then 75 and 24 at Chattanooga towards Nashville?

Posted by: jhwpro | June 29, 2009 3:34 PM | Report abuse


Few, if any, problems for your trip tomorrow. Maybe a shower along the northern part of the route. Mostly dry in Tennessee.

Posted by: Jason-CapitalWeatherGang | June 29, 2009 5:37 PM | Report abuse

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