What, When and Where:
A band of rain that moved through Virginia and eastern Maryland this morning was poised at noon to cause a rainy afternoon and a wet and splashy commute for Philadelphia, New York City and nearby places. After school sports will be affected in a number of localities.
This is more than a passing shower; some places will have at least two hours of rain. The rain will depart from Philadelphia after dark, and New York City by midnight. Some of the rain will affect eastern New England, including Boston, overnight. All places will see an increase in sunshine tomorrow.
Reasons for this prediction:
This midday radar display from the Dover, Del., radar shows where the rain was just before noon.
This computer model for the six hours ending at 8 p.m. EDT shows an area with substantial rain:
Short-range computer models usually have highest accuracy. The rain area behaved this morning as predicted by this model.
The radar does not show just one solid area of rain, so the rain can start and stop at your location. No lightning was observed in this rain area before noon, but that could change during the afternoon. In areas with little wind after the rain stops, fog could form.
Sunshine and cooler temperatures will be seen around Los Angeles for the weekend and into early next week.
Temperatures will gradually rise into the weekend in Chicago.
Dallas is facing a week of abundant sunshine as temperatures climb well above seasonal averages for this time of year.
A siege of Pacific storms will continue to drench and blast the coastal Northwest into next week and will be joined by Ana.
The remnants of Tropical Depression 9 will move over Mexico's Yucatan Peninsula through Friday, bringing heavy rain and gusty winds. Another system nearby bears watching.
Since Tuesday night, NESDIS, NOAA’s satellite and information service, has been experiencing network issues and has not received a full feed of satellite data for input, a critical component for the numerical models used to forecast the weather.
Tornado sweeps through Sunset Crater National monument. 600-700 trees destroyed. The twister was 150 yards wide at times.
New England (1785)
Four day rains put Merrimac River in NH and MA to greatest flood height ever known -- extensive bridge and mill damage.
Mid-Atlantic Coast (1878)
Hurricane did extensive damage in NC, VA, MD, NJ and PA. "Philadelphia's worst" -- 84 mph wind gust at Cape May, NJ; 28.82" pressure at Annapolis, MD.