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HURRICANE OTTO INTERMEDIATE ADVISORY NUMBER  16A
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL162016
700 PM EST THU NOV 24 2016

...OTTO WEAKENING RAPIDLY OVER SOUTHERN NICARAGUA...


SUMMARY OF 700 PM EST...0000 UTC...INFORMATION
----------------------------------------------
LOCATION...11.0N 84.9W
ABOUT 5 MI...10 KM SW OF SAN CARLOS NICARAGUA
ABOUT 65 MI...105 KM E OF SAN JUAN DEL SUR NICARAGUA
MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...987 MB...29.15 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Hurricane Warning is in effect for...
* Limon Costa Rica to Bluefields Nicaragua

A Tropical Storm Warning is in effect for...
* North of Bluefields to Sandy Bay Sirpi Nicaragua
* Puntarenas Costa Rica to Puerto Sandino Nicaragua

Interests elsewhere in Nicaragua and Costa Rica should monitor the
progress of Otto.

For storm information specific to your area, please monitor
products issued by your national meteorological service.


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 700 PM EST (0000 UTC), the center of Hurricane Otto was located
inland over southern Nicaragua near latitude 11.0 North, longitude
84.9 West. Otto is moving toward the west near 12 mph (19 km/h), and
a faster motion toward the west or west-southwest is expected later
tonight or on early Saturday. On the forecast track, the center of
Otto will continue to move across southern Nicaragua and northern
Costa Rica through this evening, and emerge off of the Pacific coast
of southern Nicaragua or northern Costa Rica by early Friday.

Maximum sustained winds have decreased to near 75 mph (120 km/h)
with higher gusts.  Continued rapid weakening is forecast and Otto
is expected to weaken to a tropical storm in the next few hours.
Additional weakening is anticipated after Otto moves over the
Pacific Ocean.

Hurricane-force winds extend outward up to 15 miles (30 km) from
the center and tropical-storm-force winds extend outward up to 70
miles (110 km).

The estimated minimum central pressure is 987 mb (29.15 inches).


HAZARDS AFFECTING LAND
----------------------
RAINFALL:  Total rainfall of 6 to 12 inches, with isolated amounts
of 15 to 20 inches, can be expected across northern Costa Rica and
southern Nicaragua through tonight. These rains will likely result
in life-threatening flash floods and mudslides. Recent reports from
amateur radio operators indicate that mudslides are occurring over
portions of northern Costa Rica.

Outer rain bands from Otto are expected to produce rainfall
accumulations of 3 to 6 inches with total rainfall amounts of up to
10 inches over the higher terrain of far western Panama and southern
Costa Rica through Friday.

Additional rainfall amounts of 1 to 3 inches can be expected tonight
over San Andres and Providencia Islands.

WIND:  Hurricane and tropical storm conditions are occurring in the
warning area.

Tropical storm conditions are expected in the warning area along the
Pacific coasts of Costa Rica and Nicaragua by this evening.

STORM SURGE:  The combination of a dangerous storm surge and large
and destructive waves could raise water levels by as much 3 to 5
feet above normal tide levels in areas of onshore flow within the
hurricane warning area. Water levels will subside by tonight.

SURF:  Swells generated by Otto are likely to cause life-threatening
surf and rip current conditions over the next several days along the
coasts of Panama, Costa Rica, and Nicaragua.  Please consult
products from your local weather office.  High surf is likely
to occur during the next few hours over portions of Lago Nicaragua.


NEXT ADVISORY
-------------
Next complete advisory at 1000 PM EST.

$$
Forecaster Beven

NNNN