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Hurricane Olaf Public Advisory Number 9
2021-09-09 22:45:14| National Hurricane Center (East Pacific)
Issued at 300 PM MDT Thu Sep 09 2021 000 WTPZ35 KNHC 092045 TCPEP5 BULLETIN Hurricane Olaf Advisory Number 9 NWS National Hurricane Center Miami FL EP152021 300 PM MDT Thu Sep 09 2021 ...EYEWALL OF OLAF NEARING THE SOUTHERN COAST OF BAJA CALIFORNIA SUR... ...HURRICANE WARNING EXTENDED NORTHWARD TO CABO SAN LAZARO... SUMMARY OF 300 PM MDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...22.2N 108.9W ABOUT 80 MI...130 KM SE OF CABO SAN LUCAS MEXICO MAXIMUM SUSTAINED WINDS...90 MPH...150 KM/H PRESENT MOVEMENT...NNW OR 335 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...977 MB...28.85 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The government of Mexico has upgraded the Tropical Storm Warning from north of Sante Fe to Cabo San Lazaro to a Hurricane Warning. The government of Mexico has also issued a Tropical Storm Warning from north of Cabo San Lazaro to Puerto San Andresito and from San Evaristo to Loreto. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * Baja California Sur Mexico from Los Barriles to Cabo San Lazaro. A Tropical Storm Warning is in effect for... * Baja California Sur Mexico north of Cabo San Lazaro to Puerto San Andresito * Baja California Sur Mexico north of Los Barriles to Loreto A Hurricane Warning means that hurricane conditions are expected somewhere within the hurricane warning area, in this case within the next 12 to 24 hours. Preparations to protect life and property should be rushed to completion. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the tropical storm warning area within 36 hours. Interests elsewhere in Baja California Sur should monitor the progress of Olaf. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 300 PM MDT (2100 UTC), the center of Hurricane Olaf was located near latitude 22.2 North, longitude 108.9 West. Olaf is moving toward the north-northwest near 10 mph (17 km/h). A slight turn toward the northwest is expected tonight, and Olaf is forecast to continue moving toward the northwest on Friday. A turn toward the west is expected over the weekend. On the forecast track, the center of Olaf will approach the southern coast of the Baja California peninsula during the next several hours, and then move very near or over southern Baja California Sur tonight and on Friday. The hurricane will begin to move westward away from land late Friday or early Saturday. Maximum sustained winds have increased to near 90 mph (150 km/h) with higher gusts. Additional strengthening is possible before the hurricane nears the coast tonight. Weakening is expected on Friday after Olaf begins to interact with land. Further weakening is likely over the weekend. Hurricane-force winds extend outward up to 35 miles (55 km) from the center and tropical-storm-force winds extend outward up to 105 miles (165 km). The estimated minimum central pressure is 977 mb (28.85 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Olaf can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDEP5 and WMO header WTPZ45 KNHC and on the web at hurricanes.gov/graphics_ep5.shtml?key_messages WIND: Hurricane conditions are expected to reach the coast within the hurricane warning area late this afternoon or this evening and will spread northward through Friday. Tropical Storm conditions are occuring near the southern coast of Baja California Sur and will spread northward during the next several hours, making outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion. Tropical storm conditions are expected to begin in southern portions of the tropical storm warning area Friday night. RAINFALL: Olaf is expected to produce total rainfall amounts of 5 to 10 inches with maximum amounts of 15 inches across portions of southern Baja California Sur through Friday. This rainfall may trigger significant and life-threatening flash flooding and mudslides. STORM SURGE: A dangerous storm surge is expected to produce coastal flooding within the warning areas in regions of onshore winds. Near the coast, the surge will be accompanied by large and damaging waves. SURF: Swells generated by Olaf are affecting portions of the coasts of southern Baja California Sur, Nayarit, and Sinaloa, and will spread northward along the west coast of Baja California Sur through Saturday. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next intermediate advisory at 600 PM MDT. Next complete advisory at 900 PM MDT. $$ Forecaster D. Zelinsky
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