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000
WTNT31 KNHC 250532
TCPAT1

BULLETIN
TROPICAL STORM OTTO INTERMEDIATE ADVISORY NUMBER 17A
NWS NATIONAL HURRICANE CENTER MIAMI FL AL162016
1200 AM CST FRI NOV 25 2016


...CENTER OF OTTO NOW OVER THE EASTERN PACIFIC OCEAN...
...DANGEROUS FLOODING RAINS CONTINUING OVER PORTIONS OF COSTA RICA AND NICARAGUA...



SUMMARY OF 1200 AM CST...0600 UTC...INFORMATION
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LOCATION...10.8N 86.2W ABOUT 55 MI...90 KM WNW OF LIBERIA COSTA RICA MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...W OR 265 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...990 MB...29.24 INCHES



WATCHES AND WARNINGS
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CHANGES WITH THIS ADVISORY:

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for... * Puntarenas Costa Rica to Puerto Sandino Nicaragua

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



DISCUSSION AND 48-HOUR OUTLOOK
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At 1200 AM CST (0600 UTC), the center of Tropical Storm Otto was located over the eastern North Pacific Ocean near latitude 10.8 North, longitude 86.2 West. Otto is moving toward the west near 13 mph (20 km/h). A turn toward the west-southwest and a faster forward speed are expected overnight. On the forecast track, the center of Otto will move away from the coast of Central America today.

Maximum sustained winds are near 70 mph (110 km/h) with higher gusts. Some slow weakening is forecast during the next 48 hours.

Tropical-storm-force winds extend outward up to 70 miles (110 km) from the center.

The estimated minimum central pressure is 990 mb (29.24 inches).



HAZARDS AFFECTING LAND
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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 this morning. 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 southern Costa Rica through today.

WIND: Tropical storm conditions will continue in the warning area along the Pacific coasts of Costa Rica and Nicaragua for the next few hours.

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
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The next complete advisory at 300 AM CST will be issued as an eastern North Pacific Public Advisory under AWIPS header MIATCPEP2 and WMO header WTPZ32 KNHC.

$$ Forecaster Brennan

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