Dolly made landfall just south of Tampico, Mexico Tuesday night and has weakened a tropical depression while moving inland over Mexico Wednesday morning.
Torrential rain continues to batter the coast and will push farther inland across northeastern Mexico as Dolly pushes farther inland.
Rough surf and the risk of strong rip currents will also continue from the northeastern Mexico coastline to the beaches of South Texas through Wednesday.
Further interaction with land and increasing mountainous terrain will cause Dolly to become a tropical rainstorm.
While seas and surf will remain rough along coast for a time, torrential rainfall will continue over northeastern Mexico into Thursday.
Kottlowski warns that the system will bring the risk of life threatening flash flooding and mudslides in the foothills and higher terrain of the Sierra Madre Oriental Mountains, regardless of how strong the system is.
More than a foot of rain can fall on the foothills and mountains in the Mexico states of Tamaulipas, San Luis Potosi, Hildalgo and Nuevo Leon.
Major cities in Mexico that can be affected include Monterrey, Ciudad Victoria, Tampico and La Pesca.
Brownsville, McAllen and Harlingen, Texas, may also be on the fringe effect of the system, in the form of showers and thunderstorms.
On a positive note, much of the area from the Yucatan Peninsula to northeastern Mexico, South Texas and the Southwest states is in need of rain.
Downpours affected the Yucatan Peninsula and part of Central America this weekend, where rainfall has been well below average this year so far.
The combination of rain from Dolly and Norbert are projected to bring rain to the southwestern U.S. and part of California late this week.
The Season So Far
In terms of the 2014 Atlantic hurricane season, the year so far has been running slower than average in some cases and ahead of average in others.
Excluding Dolly, there have been four other tropical depressions in the Atlantic, of which three strengthened and became hurricanes.
The average date for the fourth named system is Aug. 23. However, the average date for the third hurricane of the season is Sept. 9. Cristobal became the season’s third hurricane on Aug. 24.
The last time it has taken this long to get to the letter “D” in storm names was in 1994, when Debby formed on Sept. 9.
AccuWeather Meteorologists Alex Sosnowski and Jordan Root contributed content to this story.