Skip Navigation Links
NOAA NOAA United States Department of Commerce

Tropical Depression Hanna Public Advisory


Home   Archive  


647 
WTNT33 KNHC 262033
TCPAT3

BULLETIN
Tropical Depression Hanna Advisory Number  16
NWS National Hurricane Center Miami FL       AL082020
400 PM CDT Sun Jul 26 2020

...HANNA WEAKENS TO A TROPICAL DEPRESSION OVER NORTHEASTERN
MEXICO...
...HEAVY RAIN AND DANGEROUS FLASH FLOODING CONTINUE OVER FAR
SOUTHEAST TEXAS AND NORTHEAST MEXICO...


SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...25.6N 100.6W
ABOUT 35 MI...55 KM WSW OF MONTERREY MEXICO 
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...WSW OR 245 DEGREES AT 9 MPH...15 KM/H
MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES


WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

Interests in northeastern Mexico should monitor the progress of
Hanna.  For storm information specific to your area, please monitor
products issued by your national meteorological service.


DISCUSSION AND OUTLOOK
----------------------
At 400 PM CDT (2100 UTC), the center of Tropical Depression Hanna
was located near latitude 25.6 North, longitude 100.6 West. The
depression is moving toward the west-southwest near 9 mph (15 km/h),
and this motion is expected to continue through Monday. On the 
forecast track, the center of Hanna should continue to move farther 
inland over northeastern Mexico.

Maximum sustained winds have decreased to near 35 mph (55 km/h) 
with higher gusts. Additional weakening is expected as the center
of Hanna moves farther inland.  Hanna is expected to become a 
remnant low on Monday and dissipate by Monday night.

The estimated minimum central pressure is 1002 mb (29.59 inches).


HAZARDS AFFECTING LAND
----------------------
Key messages for Hanna can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT3, WMO header WTNT43 KNHC and
on the web at www.hurricanes.gov/text/MIATCDAT3.shtml.

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, northern San Luis 
Potosi, and eastern Durango...1 to 4 inches.

This rain will produce life-threatening flash flooding, rapid rises 
on small streams, and isolated minor 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 northeastern Mexico coasts through early Monday.
These swells are likely to cause life-threatening surf and rip
current conditions.  Please consult products from your local weather
office.

TORNADOES:  Isolated tornadoes are possible through this evening 
across parts of south Texas


NEXT ADVISORY
-------------
This is the last public advisory issued by the National Hurricane
Center on Hanna.

Future information on this system can be found in Public Advisories 
issued by the Weather Prediction Center beginning at 10 PM CDT, 
under AWIPS header TCPAT3, WMO header WTNT33 KWNH, and on the web 
at http://www.wpc.ncep.noaa.gov. 

$$
Forecaster Brown