HIRSC - Weather Team continues to actively monitor Major Hurricane Douglas and continuing to assess the potential weather impacts on Hawaii Island. Hurricane Douglas is located 1,125 miles east-southeast of Hilo, Hawaii Island.
We want to remind all of our followers that now is the time to get all personal protection and preparation work completed ahead of Tropical Cyclone Douglas.
HIRSC - Hawaii Island emergency action and operations plans have been activated ahead of the potential impacts from Tropical Cyclone Douglas.
Published by: HIRSC - Nevada (Henderson), Utah (St. George), and Weather Teams
Weather Bulletin for Hurricane Douglas (As of 5 pm HST - 7/23/2020)
BULLETIN Hurricane Douglas Advisory Number 15 NWS National Hurricane Center Miami FL EP082020 500 PM HST Thu Jul 23 2020 ...POWERFUL HURRICANE DOUGLAS SLIGHTLY STRONGER AS IT APPROACHES THE CENTRAL PACIFIC... SUMMARY OF 500 PM HST...0300 UTC...INFORMATION ---------------------------------------------- LOCATION...14.9N 138.8W ABOUT 1125 MI...1810 KM ESE OF HILO HAWAII MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H PRESENT MOVEMENT...WNW OR 295 DEGREES AT 18 MPH...30 KM/H MINIMUM CENTRAL PRESSURE...954 MB...28.17 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. Interests in the Hawaiian Islands should monitor the progress of Douglas. Watches could be issued on Friday for a portion of the area. DISCUSSION AND OUTLOOK ---------------------- At 500 PM HST (0300 UTC), the center of Hurricane Douglas was located near latitude 14.9 North, longitude 138.8 West. Douglas is moving toward the west-northwest near 18 mph (30 km/h), and this motion is expected to continue for the next few days with a gradual decrease in forward speed and a slight turn toward the west. On the forecast track Douglas will approach the Hawaiian Islands Saturday night, and be near those Islands on Sunday. Maximum sustained winds have increased to near 130 mph (215 km/h) with higher gusts. Douglas is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Gradual weakening expected to begin on Friday and continue through the weekend. Douglas is forecast to be near hurricane strength when it approaches the Hawaiian Islands. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 90 miles (150 km). The estimated minimum central pressure is 954 mb (28.17 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Douglas are expected to begin affecting portions of the Hawaiian Islands on Saturday. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. Key messages for Douglas can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDEP3 and WMO header WTPZ43 KNHC. NEXT ADVISORY ------------- Next complete advisory at 1100 PM HST.
Tropical Cyclone Outlook for the East Pacific Region (As of 5 pm PST - 7/23/2020):
Tropical Weather Outlook NWS National Hurricane Center Miami FL 500 PM PDT Thu Jul 23 2020 For the eastern North Pacific...east of 140 degrees west longitude: The National Hurricane Center is issuing advisories on Hurricane Douglas, located over the far western portion of the basin. 1. An area of low pressure could form south of the southern coast of Mexico over the weekend. Any development of this system is expected to be slow to occur through early next week while it moves generally west-northwestward. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 5 days...low...10 percent.
Preparedness Packet from Hawaii County Civil Defense: