ZCZC MIATCPAT4 ALL TTAA00 KNHC DDHHMM BULLETIN Hurricane Humberto Advisory Number 20 NWS National Hurricane Center Miami FL AL092019 1100 AM EDT Tue Sep 17 2019 ...AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT INDICATES THAT HUMBERTO CONTINUES TO GROW LARGER... ...HURRICANE WATCH ISSUED FOR BERMUDA... SUMMARY OF 1100 AM EDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...30.7N 73.5W ABOUT 525 MI...845 KM W OF BERMUDA MAXIMUM SUSTAINED WINDS...100 MPH...155 KM/H PRESENT MOVEMENT...ENE OR 75 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...961 MB...28.38 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Bermuda Weather Service has issued a Hurricane Watch for Bermuda. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Watch is in effect for... * Bermuda A Tropical Storm Warning is in effect for... * Bermuda A Hurricane Watch means that hurricane conditions are possible within the watch area, in this case within 36 hours. A Tropical Storm Warning means that tropical storm conditions are expected within the warning area, in this case within 24 to 36 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM EDT (1500 UTC), the center of Hurricane Humberto was located by an Air Force Reserve Hurricane Hunter aircraft near latitude 30.7 North, longitude 73.5 West. Humberto is moving toward the east-northeast near 8 mph (13 km/h), and this general motion with a gradual increase in forward speed is expected through early Thursday. On the forecast track, the center of Humberto is expected to pass just to the north of Bermuda Wednesday night. Data from the Hurricane Hunter aircraft indicate that maximum sustained winds remain near 100 mph (155 km/h) with higher gusts. However, some strengthening is forecast during the next 36 hours, and Humberto could become a major hurricane late tonight or Wednesday morning. Humberto is a large hurricane. Hurricane-force winds extend outward up to 60 miles (95 km) from the center and tropical-storm-force winds extend outward up to 175 miles (280 km). The minimum central pressure recently measured by the reconnaissance aircraft was 961 mb (28.38 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Tropical Storm conditions are likely over Bermuda by Wednesday afternoon and continuing into Thursday morning. Hurricane conditions are possible over Bermuda Wednesday night into Thursday morning. RAINFALL: Humberto may bring periods of heavy rain to Bermuda beginning Tuesday, with rainfall accumulations of 2 to 4 inches and isolated maximum amounts near 6 inches expected. SURF: Large swells generated by Humberto will increase along the coast of Bermuda by Wednesday. Dangerous breaking waves, especially along south-facing beaches, will be possible Wednesday night into Thursday, and could cause coastal flooding. Swells will continue to affect the northwestern Bahamas and the southeastern coast of the United States from east-central Florida to North Carolina during the next couple of days. These swells could cause life-threatening surf and rip current conditions. Please consult products from your local weather office and the Bermuda Weather Service. NEXT ADVISORY ------------- Next intermediate advisory at 200 PM EDT. Next complete advisory at 500 PM EDT. $$ Forecaster Stewart NNNN