ZCZC MIATCPEP2 ALL TTAA00 KNHC DDHHMM BULLETIN TROPICAL STORM OTTO ADVISORY NUMBER 18 NWS NATIONAL HURRICANE CENTER MIAMI FL EP222016 400 AM CDT FRI NOV 25 2016 ...HEAVY RAINS FROM OTTO STILL AFFECTING PORTIONS OF COSTA RICA AND NICARAGUA... SUMMARY OF 400 AM CDT...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...10.5N 86.9W ABOUT 100 MI...165 KM W OF LIBERIA COSTA RICA MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...W OR 265 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...998 MB...29.47 INCHES WATCHES AND WARNINGS -------------------- 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 ------------------------------ At 400 AM CDT (0900 UTC), the center of Tropical Storm Otto was located near latitude 10.5 North, longitude 86.9 West. Otto is moving toward the west near 14 mph (22 km/h). A faster motion toward the west-southwest is expected later today and tonight, followed by a westward motion on Saturday. On the forecast track, the center of Otto will continue to move away from the coast of Central America today. Maximum sustained winds have decreased to near 60 mph (95 km/h) with higher gusts. Little change in strength 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 998 mb (29.47 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Heavy rains associated with Otto will continue to affect portions of northern Costa Rica and southern Nicaragua into early this morning. These rains are expected to move offshore of Costa Rica and Nicaragua into the eastern Pacific later today. Additional rainfall amounts of 2 to 4 inches are possible early this morning across northern Costa Rica and southern Nicaragua. Earlier heavy rains and the potential additional rainfall will continue to pose the threat of life-threatening floods and mudslides across these regions. WIND: Tropical storm conditions will continue in portions of the warning area along the Pacific coasts of Costa Rica and Nicaragua for the next few hours. These winds will begin to diminish later today. 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 ------------- Next intermediate advisory at 700 AM CDT. Next complete advisory at 1000 AM CDT. $$ Forecaster Brennan NNNN