BULLETIN
Tropical Depression Hanna Advisory Number  17
NWS Weather Prediction Center College Park MD   AL082020
1000 PM CDT Sun Jul 26 2020

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


SUMMARY OF 1000 PM CDT...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...24.6N 101.7W
ABOUT 110 MI...190 KM SW OF MONTERREY MEXICO
MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H
PRESENT MOVEMENT...WSW OR 250 DEGREES AT 7 MPH...11 KM/H
MINIMUM CENTRAL PRESSURE...1003 MB...29.62 INCHES


WATCHES AND WARNINGS
--------------------
Flash flood warnings are in effect for Deep South Texas.

Interests in northeastern Mexico and southern Texas 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 1000 PM CDT (0300 UTC), the center of Tropical Depression Hanna
was located near latitude 24.6 North, longitude 101.7 West. The
depression is moving toward the southwest near 7 mph (11 km/h)
and this motion is expected to continue into early Monday.

Maximum sustained winds are near 30 mph (45 km/h) with higher gusts.
Continued weakening should continue as Hanna moves across higher
terrain and becomes a remnant low on Monday.

The estimated minimum central pressure is 1003 mb (29.62 inches).


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

South Texas...Additional 1 to 4 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 the 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.


NEXT ADVISORY
-------------
Next complete advisory at 400 AM CDT.


Carbin

FORECAST POSITIONS AND MAX WINDS

INIT  27/0300Z 24.6N 101.7W   25 KT  30 MPH...INLAND
 12H  27/1200Z 24.2N 102.7W   20 KT  25 MPH...POST-TROP/INLAND