Public Advisory for TROPICAL STORM ANA

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TROPICAL STORM ANA INTERMEDIATE ADVISORY NUMBER 16A

Issued: 800 AM HST FRI OCT 17 2014

Ana moving west-northwest and nearing hurricane strength

SUMMARY OF 800 AM HST...1800 UTC...INFORMATION

Location: 16.1N 154.6W
About 250 miles (400 km) S of Hilo Hawaii
About 420 miles (675 km) SSE of Honolulu Hawaii
Maximum sustained winds: 70 mph (110 km/h)
Present movement: WNW or 295 degrees at 14 mph (22 km/h)
Minimum central pressure: 992 MB or 29.30 inches

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

A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA, IN THIS CASE WITHIN 24 HOURS.

INTERESTS ELSEWHERE IN THE MAIN HAWAIIAN ISLANDS, AND 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 am HST, 1800 UTC, the center of tropical storm Ana was located near latitude 16.1 north, longitude 154.6 west. Ana is moving toward the west-northwest near 14 mph, 22 km/h. This motion is expected to continue this morning, with a slight turn to the northwest later today and Saturday. A decrease in forward speed is expected Saturday night and Sunday. On this forecast track, the center of Ana will pass about 125 miles southwest of the Big Island tonight and about 130 miles southwest of the rest of the main Hawaiian islands this weekend.

Maximum sustained winds are near 70 mph, 110 km/h, with higher gusts. Gradual strengthening is expected during the next 24 hours, with Ana possibly becoming a hurricane later today or tonight. Gradual weakening is expected Saturday and Sunday.

Tropical storm force winds extend outward up to 80 miles, 130 km from the center.

The estimated minimum central pressure is 992 mb, 29.30 inches.

HAZARDS AFFECTING LAND

WIND

Tropical storm conditions are possible on the Big Island of Hawaii by tonight.

SURF

Large swells produced by Ana are expected to build over the eastern end of the main Hawaiian island chain today through Saturday. These large swells will continue to spread up the island chain through the weekend. Surf produced by these swells could potentially be damaging along exposed south and southeast shorelines beginning later today and Saturday, and persisting through the weekend in some areas.

RAINFALL

Heavy rainfall associated with Ana may reach the Big Island of Hawaii this afternoon, with total rain accumulations between 6 and 8 inches expected, with 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 AM HST.

$$
FORECASTER WROE