Public Advisory for HURRICANE ANA

Raw Text File

HURRICANE ANA INTERMEDIATE ADVISORY NUMBER 18A

Issued: 800 PM HST FRI OCT 17 2014

Hurricane Ana passing southwest of the Big Island

SUMMARY OF 800 PM HST...0600 UTC...INFORMATION

Location: 17.4N 156.9W
About 170 miles (275 km) SSW of KAILUA-KONA Hawaii
About 270 miles (435 km) SSE of Honolulu Hawaii
Maximum sustained winds: 80 mph (130 km/h)
Present movement: NW or 310 degrees at 13 mph (20 km/h)
Minimum central pressure: 986 MB or 29.12 inches



Hurricane Category: 1

WATCHES AND WARNINGS

CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY,

NONE

SUMMARY OF WATCHES AND WARNINGS IN EFFECT,

A TROPICAL STORM WATCH IS IN EFFECT FOR,
* HAWAII COUNTY
* MAUI COUNTY, INCLUDING THE ISLANDS OF MAUI, MOLOKAI, LANAI,
AND KAHOOLAWE.
* OAHU
* KAUAI COUNTY INCLUDING THE ISLANDS OF KAUAI AND NIIHAU.

A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA, IN THIS CASE WITHIN THE NEXT 36
HOURS, DEPENDING ON THE ISLAND. ANA WILL MAKE ITS CLOSEST POINT
OF APPROACH TO THE BIG ISLAND OF HAWAII TONIGHT, MAKING ITS CLOSEST
POINT OF APPROACH TO THE OTHER ISLANDS OVER THE WEEKEND.

INTERESTS IN THE PAPAHANAUMOKUAKEA MARINE NATIONAL MONUMENT
AREA SHOULD MONITOR THE PROGRESS OF ANA.


FOR STORM INFORMATION SPECIFIC TO YOUR AREA, PLEASE MONITOR
PRODUCTS ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN
HONOLULU HAWAII.

DISCUSSION AND 48-HOUR OUTLOOK

At 800 pm HST, 0600 UTC, the center of hurricane Ana was located by an air force reserve hurricane hunter aircraft near latitude 17.4 north, longitude 156.9 west. Ana is moving toward the northwest near 13 mph, 20 km/h. This general motion is expected to continue through Saturday. A decrease in forward speed is expected Saturday night and Sunday, with a turn toward the west. On the forecast track, the center of Ana will pass about 150 miles southwest of the Big Island tonight and about 175 miles southwest of the rest of the main Hawaiian islands this weekend.

Maximum sustained winds are near 80 mph, 130 km/h, with higher gusts. Some additional strengthening is possible through tonight, followed by gradual weakening Saturday and Sunday.

Hurricane force winds extend outward up to 25 miles, 35 km, from the center, and tropical storm force winds extend outward up to 105 miles, 165 km.

The estimated minimum central pressure is 986 mb, 29.12 inches.

HAZARDS AFFECTING LAND

WIND

Gusts to tropical storm force are possible on the Big Island of Hawaii tonight, especially in showers and thunderstorms, and along south and west facing coasts. Tropical storm conditions are possible across the rest of the main Hawaiian islands over the weekend.

SURF

Large swells produced by Ana are expected to build over most of the main Hawaiian island chain through Saturday. Surf produced by these swells could potentially be damaging along exposed south and southeast shorelines through Sunday, though surf will diminish earlier on the Big Island.

RAINFALL

Heavy rainfall associated with Ana will move over the the Big Island of Hawaii late tonight and early Saturday, with total rain accumulations between 4 and 6 inches expected, and isolated totals of 12 inches possible. Heavy rain could potentially affect the other islands Saturday and Sunday. This rainfall could cause life-threatening flash floods and mud slides.

NEXT ADVISORY
Next complete advisory...1100 PM HST.

$$

FORECASTER BIRCHARD