408 WTPZ35 KNHC 252336 TCPEP5 BULLETIN Tropical Storm John Intermediate Advisory Number 12A NWS National Hurricane Center Miami FL EP102024 600 PM CST Wed Sep 25 2024 ...JOHN CONTINUES TO STRENGTHEN... ...THREAT OF CATASTROPHIC LIFE-THREATENING FLASH FLOODING AND MUDSLIDES CONTINUES OVER PORTIONS OF SOUTHERN MEXICO... SUMMARY OF 600 PM CST...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...16.9N 101.8W ABOUT 125 MI...200 KM W OF ACAPULCO MEXICO ABOUT 55 MI...90 KM SSW OF ZIHUATANEJO MEXICO MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...NNW OR 340 DEGREES AT 5 MPH...7 KM/H MINIMUM CENTRAL PRESSURE...984 MB...29.06 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * Tecpan de Galeana to Lazaro Cardenas A Hurricane Watch is in effect for... * Acapulco to Tecpan de Galeana * Lazaro Cardenas to Punta San Telmo A Tropical Storm Warning is in effect for... * Punta Maldonado to Acapulco * Lazaro Cardenas to Punta San Telmo A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area, this is case within 12 to 24 hours. Preparations to protect life and property should be rushed to completion. A Hurricane Watch means that hurricane conditions are possible within the watch area, in this case within 12 hours. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within 12 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 600 PM CST (0000 UTC), the center of Tropical Storm John was located near latitude 16.9 North, longitude 101.8 West. John is moving toward the north-northwest near 5 mph (7 km/h). This motion should continue for the next day or so, followed by a gradual turn to the west-northwest on Friday. On the forecast track, the center of John is forecast to approach the southwestern coast of Mexico early on Thursday and be inland on Friday. Recent data from aircraft reconnaissance indicate that the maximum sustained winds have increased to near 60 mph (95 km/h) with higher gusts. John is forecast to strengthen into a hurricane as it approaches the coast of southern Mexico on Thursday. Tropical-storm-force winds extend outward up to 150 miles (240 km) from the center. The estimated minimum central pressure based on recent dropsonde data is 984 mb (29.06 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Through Friday, Tropical Storm John is expected to produce additional rainfall amounts of 10 to 20 inches with isolated totals around 30 inches across portions of the Mexican States of Guerrero, Oaxaca and Michoacan. For a complete depiction of forecast rainfall associated with John, please see the National Weather Service Storm Total Rainfall Graphic, available at hurricanes.gov/graphics_ep5.shtml?rainqpf STORM SURGE: A dangerous storm surge is expected to produce coastal flooding near and to the east of where the center makes landfall. Near the coast, the surge will be accompanied by large and destructive waves. WIND: Hurricane conditions are expected along the coast within the hurricane warning area Thursday. Winds are expected to first reach tropical storm strength as early as tonight, making outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion. Tropical storm conditions are expected to first reach the coast within the tropical storm warning area as early as tonight. SURF: Swells associated with John are forecast to continue to affect the coast of southern Mexico through the week, with the potential for dangerous surf and rip currents. Please see local statements for more information. NEXT ADVISORY ------------- Next complete advisory at 900 PM CST. $$ Forecaster Hagen
Tropical Storm John Public Advisory
25
Sep