ZCZC HFOTCPCP2 ALL TTAA00 PHFO DDHHMM BULLETIN Tropical Storm Douglas Intermediate Advisory Number 31A NWS Central Pacific Hurricane Center Honolulu HI EP082020 800 PM HST Mon Jul 27 2020 ...DOUGLAS WEAKENING BUT BRINGING TROPICAL STORM CONDITIONS TO PORTIONS OF THE PAPAHANAUMOKUAKEA MARINE NATIONAL MONUMENT... SUMMARY OF 800 PM HST...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...23.2N 164.1W ABOUT 145 MI...235 KM ESE OF FRENCH FRIGATE SHOALS ABOUT 415 MI...665 KM WNW OF HONOLULU HAWAII MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...999 MB...29.5 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY... None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A Tropical Storm Warning is in effect for... * Portions of the Papahanaumokuakea Marine National Monument from Nihoa to French Frigate Shoals to Maro Reef A Tropical Storm Watch is in effect for... * Portions of the Papahanaumokuakea National Marine Monument from Maro Reef to Lisianski A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within the next 24 hours. A Tropical Storm Watch means that tropical storm conditions are possible somewhere within the watch area, in this case within the next to 24 to 36 hours. DISCUSSION AND OUTLOOK ---------------------- At 800 PM HST (0600 UTC), the center of Tropical Storm Douglas was located near latitude 23.2 North, longitude 164.1 West. Douglas is moving toward the west-northwest near 13 mph (20 km/h) and this general motion is expected to continue the next couple of days. Maximum sustained winds are near 60 mph (110 km/h) with higher gusts. Weakening is forecast over the next couple of days, with Douglas expected to become a remnant low in a few days. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center. The estimated minimum central pressure is 999 mb (29.5 inches). HAZARDS AFFECTING LAND ---------------------- WIND: The center of Douglas will pass very close to Necker Island and French Frigate Shoals overnight, bringing tropical storm conditions. Tropical storm conditions are expected from French Frigate Shoals to Maro Reef Tuesday and Tuesday night. Tropical storm conditions are possible from Maro Reef to Lisianski Tuesday night and Wednesday. SURF: Large swells generated by Douglas will impact a large swath of the Papahanaumokuakea Marine National Monument the next couple of days. These swells will produce large breaking waves that could inundate some of the lower-lying atolls. RAINFALL: Rainfall associated with Douglas will impact portions of the Papahanaumokuakea Marine National Monument over the next couple of days. NEXT ADVISORY ------------- Next complete advisory at 1100 PM HST. $$ Forecaster Birchard NNNN