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Hurricane OTTO (Text)


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HURRICANE OTTO INTERMEDIATE ADVISORY NUMBER   9A
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL162016
100 AM EST WED NOV 23 2016

...OTTO MOVING SLOWLY WEST-NORTHWESTWARD...
...HEAVY RAINFALL EXPECTED OVER PORTIONS OF PANAMA...COSTA
RICA...AND NICARAGUA...


SUMMARY OF 100 AM EST...0600 UTC...INFORMATION
----------------------------------------------
LOCATION...10.8N 80.0W
ABOUT 210 MI...340 KM ENE OF LIMON COSTA RICA
ABOUT 270 MI...435 KM ESE OF BLUEFIELDS NICARAGUA
MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H
PRESENT MOVEMENT...WNW OR 285 DEGREES AT 5 MPH...7 KM/H
MINIMUM CENTRAL PRESSURE...988 MB...29.18 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 Hurricane Watch is in effect for...
* The coast of Nicaragua north of Bluefields to Sandy Bay Sirpi
* The coast of Costa Rica south of Limon to the Costa Rica/Panama
border

A Tropical Storm Warning is in effect for...
* The coast of Nicaragua north of Bluefields to Sandy Bay Sirpi
* The coast of Panama from Nargana to Colon
* San Andres

A Tropical Storm Watch is in effect for...
* The coast of Panama west of Colon to the Costa Rica/Panama border

A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area.  A warning is typically issued
36 hours before the anticipated first occurrence of
tropical-storm-force winds, conditions that make outside
preparations difficult or dangerous.  Preparations to protect life
and property should be rushed to completion.

A Hurricane Watch means that hurricane conditions are possible
within the watch area, usually within 48 hours.

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area within 36 hours.

A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, generally within 48 hours.

Interests elsewhere in Nicaragua, Costa Rica, and Providencia Island
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 100 AM EST (0600 UTC), the center of Hurricane Otto was located
near latitude 10.8 North, longitude 80.0 West.  Otto is moving
toward the west-northwest near 5 mph (7 km/h).  A westward to west-
northwestward motion and an increase in forward speed are expected
during the next couple of days.  On the forecast track, the center
of Otto is expected to move onshore within the hurricane warning
area in southern Nicaragua and northern Costa Rica on Thursday.

Maximum sustained winds are near 75 mph (120 km/h) with higher
gusts.  Gradual strengthening is expected until Otto makes landfall
in Central America.

Hurricane-force winds extend outward up to 10 miles (20 km) from
the center and tropical-storm-force winds extend outward up to 60
miles (95 km).

The estimated minimum central pressure is 988 mb (29.18 inches).


HAZARDS AFFECTING LAND
----------------------
RAINFALL:  Outer rain bands from Otto are expected to produce
rainfall accumulations of 4 to 8 inches over San Andres and
Providencia islands, and the higher terrain of central and western
Panama and southern Costa Rica through today.  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
Thursday.  These rains will likely result in life-threatening flash
floods and mud slides.

WIND:  Hurricane conditions are expected within the hurricane
warning area on Thursday, and are possible in the hurricane watch
area on Thursday.  Tropical storm conditions are expected within the
warning area in Panama tonight and in the warning area in Nicaragua
Wednesday night and Thursday.  Tropical storm conditions are also
possible in the tropical storm watch area in Panama today and in San
Andres by late today.

STORM SURGE:  The combination of a dangerous storm surge and large
and destructive waves could raise water levels by as much 2 to 4
feet above normal tide levels in areas of onshore flow within the
hurricane warning area.

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.


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

$$
Forecaster Brennan

NNNN

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