763 WTPZ35 KNHC 280258 TCPEP5 BULLETIN Hurricane Rosa Advisory Number 12 NWS National Hurricane Center Miami FL EP202018 800 PM PDT Thu Sep 27 2018 ...ROSA BECOMES THE SEVENTH CATEGORY 4 HURRICANE OF THE SEASON... SUMMARY OF 800 PM PDT...0300 UTC...INFORMATION ---------------------------------------------- LOCATION...16.9N 116.7W ABOUT 605 MI...975 KM SW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H PRESENT MOVEMENT...W OR 265 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...940 MB...27.76 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 800 PM PDT (0300 UTC), the center of Hurricane Rosa was located near latitude 16.9 North, longitude 116.7 West. Rosa is moving toward the west near 9 mph (15 km/h). A gradual turn toward the west-northwest and northwest is expected on Friday, followed by a turn toward the north on Saturday and a turn toward the north-northeast on Sunday. Maximum sustained winds have increased to near 145 mph (230 km/h) with higher gusts. Rosa is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Little significant change in strength is forecast overnight, with some slow weakening anticipated by Saturday, and a larger decrease in wind speed expected early next week. Hurricane-force winds extend outward up to 40 miles (65 km) from the center and tropical-storm-force winds extend outward up to 125 miles (205 km). The estimated minimum central pressure is 940 mb (27.76 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Rosa will affect portions of the coasts of southwestern Mexico, the southern Baja California Peninsula, and southern California late this week and over the weekend. These swells are likely to cause 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 Blake