564 WTPZ31 KNHC 302043 TCPEP1 BULLETIN Tropical Storm Alvin Advisory Number 9 NWS National Hurricane Center Miami FL EP012025 200 PM MST Fri May 30 2025 ...TROPICAL STORM ALVIN MOVING NORTH-NORTHWESTWARD... ...LARGE SWELL AND RIP CURRENTS POSSIBLE ACROSS PORTIONS OF WESTERN MAINLAND MEXICO AND SOUTHERN BAJA CALIFORNIA PENINSULA THROUGH THE WEEKEND... SUMMARY OF 200 PM MST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...18.1N 109.0W ABOUT 335 MI...540 KM S OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...NNW OR 335 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 200 PM MST (2100 UTC), the center of Tropical Storm Alvin was located near latitude 18.1 North, longitude 109.0 West. Alvin is moving toward the north-northwest near 10 mph (17 km/h). A turn toward the north is expected tonight, and this motion should continue through the weekend. Maximum sustained winds remain near 50 mph (85 km/h) with higher gusts. Weakening is forecast, and Alvin is expected to degenerate to a remnant low on Saturday. Tropical-storm-force winds extend outward up to 140 miles (220 km) from the center. The estimated minimum central pressure is 1001 mb (29.56 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Alvin will affect portions of the coasts of west-central and southwestern Mexico and the southern Baja California Peninsula through 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 800 PM MST. $$ Forecaster Hagen
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NATIONAL HURRICANE CENTER and CENTRAL PACIFIC HURRICANE CENTER At The NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION