Excessive rainfall from Tropical Storm Arlene will threaten flash flooding over wide areas of eastern and southern Mexico during the next few days.
Arlene gathered strength over the southwestern Gulf of Mexico on Wednesday. The storm will spin ashore near Tampico Thursday morning.
At greatest threat of excessive flooding rain will be specific parts of northeastern and southern Mexico.
In the northeast, moisture-laden flow off the Gulf, along and north of Arlene's path, will unleash heavy to excessive rainfall between the coast and the upper Sierra Madre Oriental in the states of Tamaulipas, San Luis Potosi and Nuevo Leon. Rainfall here could locally top 12 inches by Friday.
On the Pacific side, a flow heavy with tropical moisture will wring out torrential, potentially flooding, rainfall between the coast and the nearby mountains in Oaxaca, Guerrero and Chiapas.
Weather observations out of Acapulco Wednesday morning showed rainfall of 5.3 inches in the foregoing 24 hours.
In both areas, serious flash flooding and river flooding will be possible. Steep slopes will be prone to mudslides and landslides.
At the same time, localized excessive rain could spark flooding elsewhere in eastern and southern Mexico, including both coasts as well as highland tracts.
Rounds of drenching showers and heavy thunderstorms will heighten the risk of flash flooding across the northeastern United States through the final weekend of July.
Tropical Storm Nida threatens to bring flooding rain to the Philippines into this weekend with potential future impacts on China and Taiwan.
As several large fires continue to rage across the western United States, weather conditions will gradually improve for firefighting efforts in the upcoming week.
Additional downpours are likely to roll across northern New Jersey and could suspend play during the late rounds at the 98th PGA Championship at Baltusrol Golf Club this weekend.
A pair of systems will attempt to end the tropical drought in the Atlantic Basin into early August.
Four people in Florida are likely the first in the United States to contract the Zika virus by local mosquitoes, officials said Friday.
Greenville, SC (2004)
Heavy rain causes nearby river to crest at 19.2 feet, the second highest crest ever.
"A considerable flood arose unexpectedly which proved detrimental to many in that colony." This was the first of 2 hurricane/floods within 30 days.
Amarillo, TX (1982)
4.22" of rain -- 24-hour July rainfall record.