TCPCP1 02:09:41.6788

NOTE: This is not to be used for life critical applications .  Please refer to official National Weather Service/NOAA websites and publications
----------800 PM HST Sun Sep 30 2018
...WALAKA STRENGTHENS TO A HURRICANE FAR SOUTHWEST OF HAWAII...
 SUMMARY OF 800 PM HST...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...11.7N 166.8W ABOUT 390 MI...630 KM SSE OF JOHNSTON ISLAND ABOUT 890 MI...1430 KM SW OF HONOLULU HAWAII MAXIMUM SUSTAINED WINDS...100 MPH...160 KM/H PRESENT MOVEMENT...W OR 275 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...970 MB...28.64 INCHES
 WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY:
A Hurricane Warning is now in effect for Johnston Atoll.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Hurricane Warning is in effect for... * Johnston Atoll
A Hurricane Warning means that hurricane conditions are expected in the warning area. A warning is typically issued 36 hours before the anticipated first occurrence of tropical-storm force winds, conditions that make outside preparations difficult or dangerous.
Interests in the Papahanaumokuakea Marine National Monument should monitor the progress of Walaka.
 DISCUSSION AND OUTLOOK ---------------------- At 800 PM HST (0600 UTC), the center of Hurricane Walaka was located near latitude 11.7 North, longitude 166.8 West. Walaka is moving toward the west near 12 mph (19 km/h) and this motion is expected to slow and become northwest on Monday, then north on Tuesday.
Maximum sustained winds are near 100 mph (160 km/h) with higher gusts. Rapid intensification is forecast through Tuesday.
Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 90 miles (150 km).
The estimated minimum central pressure is 970 mb (28.64 inches).
 HAZARDS AFFECTING LAND ---------------------- WIND: Tropical Storm force winds are expected across Johnston Island starting early Tuesday, with Hurricane conditions expected by Tuesday afternoon.
SURF: Large surf will affect the Johnston Atoll reefs and shorelines starting Tuesday.
RAINFALL: Heavy rainfall associated with Walaka may reach Johnston Atoll by Monday or Monday night.
 NEXT ADVISORY ------------- Next complete advisory at 1100 PM HST.
$$ Forecaster Jelsema
---------- tags: weatherwire,weather,update