Tropical Storm Boris Public Advisory Number 8a
Issued at 1200 AM CST Tue Jun 09 2026
317 WTPZ32 KNHC 090545 TCPEP2 BULLETIN Tropical Storm Boris Intermediate Advisory Number 8A NWS National Hurricane Center Miami FL EP022026 1200 AM CST Tue Jun 09 2026 ...BORIS TO CONTINUE PRODUCING HEAVY RAIN AND LIFE-THREATENING FLASH FLOODING ACROSS PORTIONS OF SOUTHERN MEXICO TODAY... SUMMARY OF 1200 AM CST...0600 UTC...INFORMATION ----------------------------------------------- LOCATION...16.1N 98.3W ABOUT 120 MI...190 KM ESE OF ACAPULCO MEXICO ABOUT 25 MI...40 KM SE OF PUNTA MALDONADO MEXICO MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...N OR 360 DEGREES AT 2 MPH...4 KM/H MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Laguna de Chacahua to Tecpan de Galeana A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case over the next 12 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 1200 AM CST (0600 UTC), the center of Tropical Storm Boris was located near latitude 16.1 North, longitude 98.3 West. Boris is moving toward the north near 2 mph (4 km/h). A turn toward the northwest and an increase in forward speed is expected early this morning. On the forecast track, the center of Boris should reach the coast of Oaxaca and Guerrero, Mexico, during the next few hours. Maximum sustained winds are near 45 mph (75 km/h) with higher gusts. Little change in strength is forecast until landfall. Rapid weakening will occur after the center crosses the coast of southern Mexico. Tropical-storm-force winds extend outward up to 60 miles (95 km) from the center. The estimated minimum central pressure is 1001 mb (29.56 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Boris can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDEP2 and WMO header WTPZ42 KNHC. RAINFALL: Boris is expected to produce additional rainfall totals of 3 to 6 inches, with maximum totals of 8 inches possible across coastal portions of the Mexican states of Guerrero and Oaxaca through today. This rainfall may produce life-threatening flooding and mudslides, especially in areas of steep terrain. For a complete depiction of forecast rainfall associated with Tropical Storm Boris, please see the National Weather Service Storm Total Rainfall Graphic available at hurricanes.gov/graphics_ep2.shtml?rainqpf WIND: Tropical storm conditions are likely occurring along the coast in the warning area and will continue through early this morning. NEXT ADVISORY ------------- Next complete advisory at 300 AM CST. $$ Forecaster Hagen
