SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Tropical Storm Warning is in effect for:
A Tropical Storm Watch is in effect for:
A Tropical Storm Warning means that tropical storm conditions are expected somewhere in the warning area within 36 hours.
A Tropical Storm Watch means that tropical storm conditions are possible in the watch area within 48 hours.
For storm information specific to your area, please monitor products issued by the National Weather Service office in Honolulu Hawaii.
DISCUSSION AND OUTLOOK
At 5 p.m. HST (0300 UTC), the center of Tropical Storm Olivia was located near latitude 21.9 North, longitude 149.7 West. Olivia is moving toward the west near 10 mph (17 km/h). A continued west to west-southwest motion is expected for the next few days. On the forecast track, Olivia will be moving over the main Hawaiian Islands late Tuesday night into Wednesday.
Maximum sustained winds are near 70 mph (110 km/h) with higher gusts. Gradual weakening is forecast during the next 48 hours, but Olivia is expected to remain a tropical storm as it moves across the islands.
Tropical-storm-force winds extend outward up to 90 miles (150 km) from the center.
The estimated minimum central pressure is 991 mb (29.27 inches).
HAZARDS AFFECTING LAND
WIND: Tropical storm conditions are expected over Maui County and the Big Island starting late Tuesday or Tuesday night. Tropical storm conditions are expected over Oahu starting late Tuesday night or Wednesday morning. Tropical storm conditions are possible over Kauai County starting Wednesday afternoon.
RAINFALL: Olivia is expected to produce total rainfall accumulations of 10 to 15 inches. Isolated maximum amounts of 20 inches are possible, especially over windward sections of Maui County and the Big Island. This rainfall may produce life-threatening flash flooding.
SURF: Large swells generated by Olivia will spread from east to west across the Hawaiian Islands over the next couple of days. This will cause surf to build along exposed east facing shorelines as Olivia approaches. This surf may become damaging across parts of the state. See the High Surf Warning from National Weather Service Honolulu for more information.
This is a Civil Defense Hurricane Olivia update for 6:30 p.m., Monday, September 10, 2018.
The Central Pacific Hurricane Center reports that as of 5:00 pm, Hurricane Olivia has been downgraded to a Tropical Storm, located 380 miles ENE of Hilo with sustained winds of 70 mph, moving W at 10 mph.
Due to Tropical Storm Olivia, the following advisories are in effect:
For your additional information:
More information on hurricane preparedness can be found here: www.hawaiicounty.gov/emergency…
Civil Defense is monitoring the storm and will keep you informed of any changes that may affect your safety.
Actions to take whenever a tropical storm or hurricane nears Hawaii
All of Hawaii’s citizens should know what to do during a hurricane, tropical storm watches and warnings. Watches and warnings are prepared for the Hawaiian Islands by the National Weather Service Central Pacific Hurricane Center in Honolulu. When watches and warnings are issued, people should closely monitor the Internet, radio, TV, or NOAA Weather Radio for official bulletins of the storm’s progress and instructions from civil defense authorities. Jim Weyman, director of the Central Pacific Hurricane Center, said, “Although you and your family may have never experienced a hurricane, don’t be complacent! It’s not a matter of if a hurricane will occur, but when one will occur. All of the Hawaiian Islands are at risk for a hurricane and we should all know what actions to take.”
For the Central Pacific Ocean a Hurricane/Tropical Storm Watch means hurricane/tropical storm conditions are possible in the specified area of the Watch, usually within 48 hours.
When a Hurricane or Tropical Storm Watch is issued:
For the Central Pacific Ocean a Hurricane/Tropical Storm Warning means hurricane/tropical storm conditions are expected in the specified area of the Warning, usually within 36 hours.
When a Hurricane or Tropical Storm Warning is issued:
The Central Pacific Hurricane Center (CPHC) issues tropical cyclone warnings, watches, advisories, discussions, and statements for all tropical cyclones in the Central Pacific from 140 Degrees West Longitude to the International Dateline. The season officially begins on June 1 and ends on November 30. However, tropical cyclones can occur at any time. The National Weather Service Forecast Office in Honolulu activates the CPHC when: (1) a tropical cyclone moves into the Central Pacific from the Eastern Pacific, (2) a tropical cyclone forms in the Central Pacific, or (3) a tropical cyclone moves into the Central Pacific from the West.
For links to the latest weather forecasts, reports, radar, webcam and satellite imagery visit our Weather Page at hawaii247.com/weather