000
WTNT31 KNHC 211755
TCPAT1

BULLETIN
TROPICAL STORM OTTO SPECIAL ADVISORY NUMBER   3
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL162016
100 PM EST MON NOV 21 2016

...DEPRESSION STRENGTHENS INTO TROPICAL STORM OTTO...


SUMMARY OF 100 PM EST...1800 UTC...INFORMATION
----------------------------------------------
LOCATION...11.5N 79.3W
ABOUT 175 MI...285 KM ESE OF SAN ANDRES ISLAND
ABOUT 305 MI...495 KM E OF BLUEFIELDS NICARAGUA
MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H
PRESENT MOVEMENT...STATIONARY
MINIMUM CENTRAL PRESSURE...1000 MB...29.53 INCHES


WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

Interests in Nicaragua, Costa Rica, and the islands of San Andres
and Providencia should monitor the progress of Otto, since a
Tropical Storm Watch may be required later today or tonight.


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 100 PM EST (1800 UTC), the center of Tropical Storm Otto was
located near latitude 11.5 North, longitude 79.3 West.  Otto is
nearly stationary, and a west-southwestward to westward drift is
expected over the next couple of days.

Maximum sustained winds have increased to near 50 mph (85 km/h) with
higher gusts.  Additional strengthening is forecast during the
next 48 hours, and Otto could become a hurricane during the next
couple of days.

Tropical-storm-force winds extend outward up to 35 miles (55 km)
from the center.

The estimated minimum central pressure is 1000 mb (29.53 inches).


HAZARDS AFFECTING LAND
----------------------
RAINFALL:  Outer rain bands from Otto are expected to produce
rainfall accumulations of 3 to 6 inches across portions of
central and western Panama and southeastern Costa Rica through
Wednesday, with isolated totals upwards of 10 to 15 inches across
the higher terrain.  These rains could result in life-threatening
flash floods and mud slides.  Additional heavy rainfall may move
into portions of Costa Rica Wednesday night into Thursday as the
system approaches the coast.


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

$$
Forecaster Pasch