TCPCP1 22:53:11.2554

NOTE: This is not to be used for life critical applications .  Please refer to official National Weather Service/NOAA websites and publications
----------500 PM HST Sun Sep 30 2018
...WALAKA STRENGTHENS TO A HURRICANE FAR SOUTHWEST OF HAWAII...
 SUMMARY OF 500 PM HST...0300 UTC...INFORMATION ---------------------------------------------- LOCATION...11.9N 166.4W ABOUT 390 MI...630 KM SSE OF JOHNSTON ISLAND ABOUT 860 MI...1380 KM SW OF HONOLULU HAWAII MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H PRESENT MOVEMENT...W OR 280 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...988 MB...29.18 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 500 PM HST (0300 UTC), the center of Hurricane Walaka was located near latitude 11.9 North, longitude 166.4 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 75 mph (120 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 988 mb (29.18 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 intermediate advisory at 800 PM HST. Next complete advisory at 1100 PM HST.
$$ Forecaster Powell
---------- tags: weatherwire,weather,update