An orange alert for ozone has been issued today from Southeastern Pennsylvania to Baltimore and Washington. Sensitive groups - children, the elderly and those with breathing problems - should avoid strenuous activity, especially outdoors. For more, go to www.airnow.gov.
Although weekend temperatures look pleasant - in the mid 80s - projections put a strong Hurricane Earl off the Mid-Atlantic coast by then.
"Folks from the Carolinas northward through the Mid-Atlantic and New England need to be paying attention to Earl and the forecasts as they get updated through the week," said Michael Brennan of the National Hurricane Center in Miami.
As of this morning, most of the projected paths keep Earl staying out at sea while passing the Atlantic Seaboard. Even if it does, the Shore could see riptides and rough surf all week, then possible showers and thunderstorms on Friday.
The western edge of the projected area, though, does overlap the coastline from North Carolina northward, starting Friday. (See map at right.)
Today, Earl was bringing sustained winds of 110 m.p.h. and heavy rain to the northeastern Caribbean, with hurricane warnings for many islands east of Puerto Rico, including Antigua, Barbuda, St. Kitts, Nevis, Anguilla, St. Maarten, the British Virgin Islands and the U.S. Virgin Islands.
Hurricane Danielle, which created rough surf and riptides as it traveled northward off the East Coast, has moved well out into northern Atlantic. For the latest hurricane information, go to the National Hurricane Center at www.nhc.noaa.gov.
For more on the local forecast, go to http://go.philly.com/weather.
Contact staff writer Peter Mucha at 215-854-4342 or firstname.lastname@example.org.
The Associated Press contributed to this article.