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.
The risk of flooding downpours and gusty thunderstorms will increase across southern Florida as a tropical disturbance shifts northwestward from Cuba this weekend.
Slow-moving and repetitive downpours will raise the risk for flash flooding along the western Gulf Coast into early week.
Typhoon Lionrock is poised to make landfall in Japan early in the new week with heavy rainfall, damaging winds and an inundating storm surge.
Hawaii is facing two tropical threats this week as Madeline and Lester churn westward.
Hot and dry weather will greet fans and competitors at the 2016 U.S. Open Tennis Championships in Flushing, New York, as play begins Monday, Aug. 29.
Colorado Springs, CO (1978)
Hail 6 inches deep.
Rochester, MN (1979)
2.73 inches of rain fell in 50 minutes making this the wettest August on record. (9.52 inches of rain so far this month). The heavy downpour flooded the streets of Rochester, stranding about 1,500 cars.
A five-state tornado outbreak in Nebraska, Kansas, Wyoming, Iowa and Missouri occurred on this date. In all, 20 tornadoes were reported. Nine were in Iowa. One near Farragut, IA, in the extreme SW corner of the state, caused several fatalities and numerous injuries.