WTNT31 KNHC 222346
HURRICANE OTTO INTERMEDIATE ADVISORY NUMBER 8A
NWS NATIONAL HURRICANE CENTER MIAMI FL AL162016
700 PM EST TUE NOV 22 2016
...OTTO DRIFTS WESTWARD AS A HURRICANE HUNTER AIRCRAFT REPORTS
LITTLE CHANGE IN STRENGTH...
SUMMARY OF 700 PM EST...0000 UTC...INFORMATION
ABOUT 295 MI...475 KM ESE OF BLUEFIELDS NICARAGUA
ABOUT 230 MI...370 KM E OF LIMON COSTA RICA
MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H
PRESENT MOVEMENT...W OR 275 DEGREES AT 2 MPH...4 KM/H
MINIMUM CENTRAL PRESSURE...987 MB...29.15 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Hurricane Watch is in effect for...
* Costa Rica/Panama border to south of Bluefields
A Tropical Storm Warning is in effect for...
* Nargana to Colon
* San Andres
A Tropical Storm Watch is in effect for...
* West of Colon to the Costa Rica/Panama border
* Bluefields to Sandy Bay Sirpi
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.
A Hurricane Warning could be required for portions of the coast of
Nicaragua or Costa Rica later tonight or early Wednesday.
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 700 PM EST (0000 UTC), the center of Hurricane Otto was located
near latitude 10.6 North, longitude 79.7 West. Otto is moving toward
the west near 2 mph (4 km/h). Otto should move a little faster
toward the west or west-northwest for the next couple of days. On
the forecast track, Otto is expected to approach the coasts of Costa
Rica and Nicaragua on Thursday.
Maximum sustained winds are near 75 mph (120 km/h) with higher
gusts. Strengthening is expected for the next couple of days until
Hurricane-force winds extend outward up to 10 miles (20 km) from
the center and tropical-storm-force winds extend outward up to 70
miles (110 km).
The minimum central pressure recently reported by an Air Force
Reserve Hurricane Hunter aircraft is 987 mb (29.15 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 Wednesday. 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: Tropical storm conditions are expected within the warning
area in Panama tonight and are possible in the tropical storm watch
area in Panama on Wednesday. Tropical storm conditions are
expected in San Andres by late Wednesday. Hurricane conditions are
possible within the hurricane watch area on Thursday. Tropical
storm conditions are possible within the tropical storm watch area
in Nicaragua on Thursday.
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 complete advisory at 1000 PM EST.