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Tropical Storm SERGIO
ZCZC MIATCPEP1 ALL TTAA00 KNHC DDHHMM BULLETIN Tropical Storm Sergio Intermediate Advisory Number 51A NWS National Hurricane Center Miami FL EP212018 1100 PM PDT Thu Oct 11 2018 ...OUTER RAINBANDS SPREADING OVER BAJA CALIFORNIA SUR AND THE NORTHWESTERN MEXICO STATE OF SONORA COAST... SUMMARY OF 1100 PM PDT...0600 UTC...INFORMATION ----------------------------------------------- LOCATION...25.3N 114.8W ABOUT 160 MI...260 KM WNW OF CABO SAN LAZARO MEXICO ABOUT 205 MI...335 KM SW OF SANTA ROSALIA MEXICO MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...NE OR 45 DEGREES AT 23 MPH...37 KM/H MINIMUM CENTRAL PRESSURE...994 MB...29.36 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * West coast of the Baja California peninsula from Punta Eugenia to Cabo San Lazaro * East coast of the Baja California peninsula from Mulege to Bahia San Juan Bautista A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. Interests elsewhere in the northern and central Baja California peninsula and northwestern Sonora should monitor the progress of Sergio. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM PDT (0600 UTC), the center of Tropical Storm Sergio was located near latitude 25.3 North, longitude 114.8 West. Sergio is moving toward the northeast near 23 mph (37 km/h), and this general motion is expected to continue during the next day or so. On the forecast track, the center of Sergio will be near the Pacific coast of Baja California Sur early Friday and then move over mainland northwestern Mexico by Friday evening. Maximum sustained winds remain near 60 mph (95 km/h) with higher gusts. Gradual weakening should begin later tonight, but Sergio is still forecast to reach the central Baja California peninsula as a tropical storm, then weaken to a tropical depression before reaching Sonora. Tropical-storm-force winds extend outward up to 140 miles (220 km) from the center. The estimated minimum central pressure is 994 mb (29.36 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Sergio is expected to produce storm total rainfall accumulations of 3 to 5 inches, with isolated maximum amounts of 10 inches across the central peninsula of Baja California and Sonora through Friday. This could lead to life-threatening flash flooding and mudslides within mountainous terrain. Storm total accumulations of 2 to 4 inches, with local amounts to 6 inches, are expected across the southern Plains and Arkansas from this weekend into Monday. This rainfall could cause life- threatening flash flooding. WIND: Tropical storm conditions are expected in the warning area along the western coast of the Baja California peninsula later tonight, and these conditions will spread to the east coast of the peninsula tonight or early Friday. Gusty winds could reach the coast of mainland Mexico late Friday. SURF: Swells generated by Sergio will affect much of the Baja California peninsula for the next day or two, likely causing life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 200 AM PDT. $$ Forecaster Roberts NNNN