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.
Hawaii will escape the worst, but not all of Guillermo's impacts as the tropical storm passes north of the islands Wednesday through Thursday.
A line of violent thunderstorms tore across Massachusetts, including the Boston area, Tuesday afternoon.
The Northeast will catch a break from heat and humidity for the remainder of the week.
Typhoon Soudelor in the western Pacific Ocean will remain a powerful tropical cyclone this week eventually threatening Taiwan and eastern China.
Two spectators were killed and at least another 32 people were injured Monday evening, as strong storms forced a circus tent to collapse in Lancaster, New Hampshire.
Public officials are in the process of eliminating Naegleria Fowleri, a brain-eating amoeba, from two drinking water supplies in Louisiana.
Bhubaneswar, India (2007)
13.34 inches of rain within 48 hours.
Delaware Co., PA (1843)
Delaware County flood. Darby, Drum, Ridley and Chester creeks were turned to raging rivers by high intensity rains. A total of 16" of rain in 3 hours, 5.5" in 40 minutes. 19 people were killed and 32 county bridges were lost at a replacement cost of $25,000.
Persian Gulf (1924)
Water temperature of 96 degrees as measured by a ship.