After receiving more than 6 inches yesterday, parts of the Miami Metro area will again be subject to flooding later Sunday.
One of the first cold fronts to reach South Florida all season will collide with deep tropical moisture. The result will be heavy rain-producing thunderstorms. The heaviest rainfall will likely be across the heavily populated portions of Miami-Dade and Broward counties.
Thunderstorms usually set up just west of the populated areas, across the Everglades. However, the approaching cold front will cause the Atlantic sea breeze to be pinned at the coast, over the populated areas. The sea breeze will collide with westerly winds associated with the cold front to form the thunderstorms.
There is so much moisture in the atmosphere, any thunderstorms that form will be capable of producing 2-4 inches of rain in just an hour.
Heavy rainfall belted the Miami area yesterday. The National Weather Service on the campus of Florida International University received over 6 inches of rain Saturday. Miami International Airport, the official observation site for the city, received 3.70 inches Saturday.
Any rainfall Sunday will fall on saturated ground. So, the threat for flooding under any thunderstorms will be high
Sunday will be the last day of heavy rainfall for Miami. The cold front will try to move through South Florida. But, there will only be a slight drop in humidity. Residents farther north in the state will enjoy a significant drop in humidity.
Following a southward push of cool, dry air at midweek, clouds, showers and higher humidity will return to the Northeast.
Even though the tremendous rains have come and gone, flooding will continue on the major rivers in the South Central states for the next couple of weeks.
After another dreary day unfolds on Thursday, a turn to drier and milder weather will greet New York City by this weekend.
Severe weather, including isolated tornadoes, will once again target the nation's midsection into Wednesday night.
An end to the dreary and cool weather around Harrisburg will come later this week.
An end to the April-like cool and dreary weather putting umbrellas and jackets to use around Philadelphia will come later this week.
Harrisburg, PA (1985)
Golf ball-sized hail and 60 mph winds.
Heavy, flooding rains. Milton received 15.57 inches while Crest view was deluged by 11.44 inches.
Dulles Airport, Washington, D.C. (1991)
4.25 inches of rain -- normal for all of June is 4.23 inches.