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| #1185370 (Received by flhurricane at: 10:00 AM 20.Jun.2024) TCPAT1 BULLETIN Tropical Depression Alberto Advisory Number 12 NWS National Hurricane Center Miami FL AL012024 1000 AM CDT Thu Jun 20 2024 ...ALBERTO WEAKENS TO A DEPRESSION... ...HEAVY RAINS AND FLASH FLOODING CONTINUE IN NORTHEASTERN MEXICO... SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...22.3N 99.4W ABOUT 95 MI...155 KM W OF TAMPICO MEXICO ABOUT 280 MI...450 KM SSW OF BROWNSVILLE TEXAS MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...W OR 275 DEGREES AT 18 MPH...30 KM/H MINIMUM CENTRAL PRESSURE...999 MB...29.50 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: All Tropical Storm Warnings in Mexico have been discontinued. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1000 AM CDT (1500 UTC), the center of Tropical Depression Alberto was located near latitude 22.3 North, longitude 99.4 West. The depression is moving toward the west near 18 mph (30 km/h), and this motion is expected to continue through today, as Alberto moves farther inland over Mexico. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Alberto is expected to continue weakening as it moves inland, and the system is likely to dissipate over Mexico later today. The estimated minimum central pressure is 999 mb (29.50 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Alberto can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT1 and WMO header WTNT41 KNHC. RAINFALL: Rainfall associated with Tropical Depression Alberto is expected to begin to diminish across southern Texas today, with additional rainfall totals generally 1 inch or less. Heavy rainfall will continue to impact northeast Mexico today, with rainfall totals of 5 to 10 inches expected. Maximum rainfall totals around 20 inches are possible across the higher terrain of the Mexican states of Coahuila, Nuevo Leon, and Tamaulipas. For a complete depiction of forecast rainfall and flash flooding associated with Tropical Depression Alberto, please see the National Weather Service Storm Total Rainfall Graphic, available at hurricanes.gov/graphics_at1.shtml?rainqpf and the Flash Flood Risk graphic at hurricanes.gov/graphics_at1.shtml?ero STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Sargent, TX to Sabine Pass, TX...2-4 ft Galveston Bay...2-4 ft Mouth of the Rio Grande, TX to Sargent, TX...1-3 ft Sabine Pass, TX to Vermilion/Cameron Parish Line, LA...1-3 ft Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. For a complete depiction of areas at risk of storm surge inundation, please see the National Weather Service Peak Storm Surge Graphic, available at hurricanes.gov/graphics_at1.shtml?peakSurge. Storm surge will raise water levels by as much as 1 to 3 feet above normal tide levels along the immediate coast of northeastern Mexico in areas of onshore winds. Near the coast, the surge will be accompanied by large and destructive waves. WIND: Gusty winds are possible in portions of southern Texas and northern Mexico through this evening. SURF: Swells generated by Alberto will affect the coast of Texas and northeastern Mexico through Friday. 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 400 PM CDT. $$ Forecaster Kelly |
