TCPCP1 04:49:24.8488

NOTE: This is not to be used for life critical applications .  Please refer to official National Weather Service/NOAA websites and publications
----------1100 PM HST Tue Oct 02 2018
...DANGEROUS WALAKA MOVING RAPIDLY NORTH TOWARD THE PAPAHANAUMOKUAKEA MARINE NATIONAL MONUMENT... ...HURRICANE CONDITIONS PERSIST NEAR JOHNSTON ATOLL...
 SUMMARY OF 1100 PM HST...0900 UTC...INFORMATION ----------------------------------------------- LOCATION...18.1N 170.0W ABOUT 100 MI...165 KM NNW OF JOHNSTON ISLAND ABOUT 465 MI...750 KM SSW OF FRENCH FRIGATE SHOALS MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H PRESENT MOVEMENT...N OR 5 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...946 MB...27.94 INCHES
 WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY:
None.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Hurricane Warning is in effect for... * Johnston Atoll * Papahanaumokuakea Marine National Monument from French Frigate Shoals to Maro Reef
A Tropical Storm Warning is in effect for... * Papahanaumokuakea Marine National Monument from Nihoa to French Frigate Shoals
A Hurricane Warning means that hurricane conditions are expected in the warning area within 36 hours.
A Tropical Storm Warning means that tropical storm conditions are expected within the warning area within 36 hours.
 DISCUSSION AND OUTLOOK ---------------------- At 1100 PM HST (0900 UTC), the center of Hurricane Walaka was located near latitude 18.1 North, longitude 170.0 West. Walaka is moving toward the north near 13 mph (20 km/h). The hurricane is expected to turn toward the north-northeast with a faster forward motion Wednesday and Wednesday night. Walaka is forecast to turn toward the north with a slower forward speed starting Thursday. On this track, the center of Walaka will likely reach the Papahanaumokuakea Marine National Monument Wednesday night.
Maximum sustained winds are near 130 mph (215 km/h) with higher gusts. Walaka remains a dangerous category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some gradual weakening is expected through Thursday, but Walaka is forecast to remain a hurricane as it passes across the Papahanaumokuakea Marine National Monument late Wednesday.
Hurricane-force winds extend outward up to 40 miles (65 km) from the center and tropical-storm-force winds extend outward up to 185 miles (295 km).
The estimated minimum central pressure is 946 mb (27.94 inches).
 HAZARDS AFFECTING LAND ---------------------- WIND: Hurricane conditions will persist on Johnston Atoll through early Wednesday morning, with conditions gradually improving during the day on Wednesday. Tropical storm force winds are expected across the Papahanaumokuakea Marine National Monument from Nihoa to French Frigate Shoals to Maro Reef beginning Wednesday afternoon, with hurricane conditions expected over portions of the area between French Frigate Shoals and Maro Reef Wednesday night.
SURF: Large surf associated with Walaka will continue to affect Johnston Atoll through Wednesday. Large surf will affect the Papahanaumokuakea Marine National Monument beginning early Wednesday. These large waves will likely inundate some of the low-lying atolls, especially from French Frigate Shoals to Maro Reef.
RAINFALL: Torrential rainfall associated with Walaka will continue across Johnston Atoll through early Wednesday, and will reach the Papahanaumokuakea Marine National Monument from Nihoa to French Frigate Shoals to Maro Reef starting Wednesday.
 NEXT ADVISORY ------------- Next intermediate advisory at 200 AM HST. Next complete advisory at 500 AM HST.
$$ Forecaster Houston
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