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TROPICAL STORM OTTO INTERMEDIATE ADVISORY NUMBER 7A
NWS NATIONAL HURRICANE CENTER MIAMI FL AL162016
100 PM EST TUE NOV 22 2016
...OTTO EXPECTED TO BECOME A HURRICANE LATER TODAY...
SUMMARY OF 100 PM EST...1800 UTC...INFORMATION
ABOUT 320 MI...510 KM ESE OF BLUEFIELDS NICARAGUA
ABOUT 245 MI...395 KM E OF LIMON COSTA RICA
MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H
MINIMUM CENTRAL PRESSURE...986 MB...29.12 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
A Tropical Storm Watch is in effect for...
* San Andres
* West of Colon to the Costa Rica/Panama border
A Hurricane Watch means that hurricane conditions are possible
within the watch area. A watch is typically issued 48 hours
before the anticipated first occurrence of tropical-storm-force
winds, conditions that make outside preparations difficult or
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case during the
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 PM EST (1800 UTC), the center of Tropical Storm Otto was
located near latitude 10.4 North, longitude 79.4 West. Otto is
stationary and a westward drift is expected to begin later today,
followed by a faster westward motion on Wednesday. On the forecast
track, Otto should be approaching the coasts of Nicaragua and Costa
Rica on Thursday.
Maximum sustained winds remain near 70 mph (110 km/h) with higher
gusts. Otto is expected to become a hurricane later today, with
additional strengthening forecast through Thursday.
Tropical-storm-force winds extend outward up to 70 miles (110 km)
from the center.
The estimated minimum central pressure is 986 mb (29.12 inches).
HAZARDS AFFECTING LAND
RAINFALL: Outer rain bands from Otto are expected to produce
rainfall accumulations of 3 to 6 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 today and tonight. Tropical storm conditions are possible
within the tropical storm watch area on Wednesday or Wednesday
night. Hurricane conditions are possible within the hurricane watch
area 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 400 PM EST.