NOAA: Tropical Storm Hanna Projected Path Update

MIAMI, Florida – NOAA’s National Hurricane Center issued Public Advisory at 2 p.m. Eastern Daylight Time on Sunday, July 26, 2020, due to the presence of Tropical Storm Hanna that made landfall on the Texas coast.

Tropical Storm Hanna Projected Path

NOAA National Hurricane Center Tropical Storm Hanna 2020 Projected Path

Tropical Storm Hanna is located 10 miles north of Monterey, Mexico, and is moving to the west-southwest at 9 mph (15 km/h).

NHC forecasters say that this motion should continue through Monday.

On the NHC forecast track, the center of Hanna should continue to move farther inland over northeastern Mexico through tonight.

Tropical Storm Hanna Computer Models

Tropical Storm Hanna 2020 Computer Models, Spaghetti Models

Spaghetti models are in general agreement that the tropical cyclone will continue on a west-southwesterly track.

The new NHC track forecast lies in the middle of the computer models.

Tropical Storm Hanna Strength

Tropical Storm Hanna 2020 NOAA NHC Wind Arrival Time

Hanna has weakened from a Category 1 hurricane to a tropical storm with maximum sustained winds of 40 mph (65 km/h), with higher gusts.

Tropical-storm-force winds extend outward up to 105 miles (165 km) mainly to the east of the center of the tropical cyclone.

Additional weakening is expected as the center of Hanna moves farther inland, and the cyclone is expected to weaken to a tropical depression by tonight and dissipate Monday or Monday night.

Tropical Storm Hanna Watches and Warnings

All watches and warnings have been discontinued.

TORNADOES: A few tornadoes are possible today into this evening across parts of south Texas.

STORM SURGE: Water levels along the Texas coast will gradually subside through this afternoon.

WIND: Tropical storm conditions will continue near the center of Hanna for the next few hours.

RAINFALL: Hanna is expected to produce the following rain accumulations and flood threats through Monday:

South Texas…Additional 2 to 5 inches. Storm total amounts 6 to 12 inches, isolated 16 inches.
Northern Mexican states of Coahuila, Nuevo Leon, Tamaulipas…6 to 12 inches, isolated 16 inches.
Northern Mexican states of northern Zacatecas and eastern Durango…1 to 4 inches.

This rain will produce life-threatening flash flooding, rapid rises on small streams, and isolated minor to moderate river flooding in South Texas. Flash flooding and mudslides are likely across Northern Mexican states.

SURF: Swells generated by Hanna will continue to affect much of the Texas and Louisiana coasts for another day or so. These swells are likely to cause life-threatening surf and rip current conditions.

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