Looks like Tropical Storm Arlene will be getting everyone in the southeastern United States very wet this weekend. Heavy rains are already sweeping Florida (here's the soggy forecast for Tampa), and are expected to move through the Appalachians and into the Ohio Valley:

"HEAVY RAIN ASSOCIATED
WITH ARLENE WILL CONTINUE TO SPREAD NORTHWARD THROUGH THE
SOUTHEAST...SOUTHERN APPALACHIANS...TENNESSEE VALLEY AND OHIO
VALLEY THIS EVENING INTO THIS WEEKEND. STORM TOTAL PRECIPITATION OF
4 TO 8 INCHES IS EXPECTED ALONG AND TO THE EAST OF THE TRACK OF
ARLENE...WITH ISOLATED AMOUNTS UP TO 12 INCHES ALONG THE CENTRAL TO
EASTERN GULF COAST STATES."

Here's the rest of the advisory from the National Hurricane Center. The service has posted tropical storm warnings and a hurricane watch for the Gulf Coast between Louisiana and the Florida panhandle. The storm's maximum sustained winds have climbed to 65 mph, just 9 miles short of hurricane force. It is expected to strengthen, and could reach hurricane force before landfall.

Here is the satellite water vapor image. And here is a satellite photo, shot today, showing the storm clouds moving into the Southeast, ahead of the storm.