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TROPICAL STORM UNALA ADVISORY NUMBER 1

Issued: 500 PM HST SUN AUG 18 2013

Tropical storm Unala forms well west southwest of Hawaii

SUMMARY OF 500 PM HST...0300 UTC...INFORMATION

LOCATION: 17.1N 178.3W
ABOUT 1360 MI: 2190 KM W OF HONOLULU HAWAII
ABOUT 1275 MI: 2050 KM WSW OF LIHUE HAWAII
MAXIMUM SUSTAINED WINDS: 40 MPH: 65 KM/H
PRESENT MOVEMENT: W OR 270 DEGREES AT 21 MPH: 33 KM/H
MINIMUM CENTRAL PRESSURE: 998 MB or 29.47 INCHES

WATCHES AND WARNINGS

There are no coastal watches or warnings in effect.

DISCUSSION AND 48-HOUR OUTLOOK

At 500 pm HST, 0300 UTC, the center of tropical storm Unala was located near latitude 17.1 north, longitude 178.3 west. Unala is moving toward the west near 21 mph, 33 km/h, and this motion is expected to continue through 48 hours. A gentle turn to the northwest and north is forecast after that.

Maximum sustained winds are near 40 mph, 65 km/h, with higher gusts. Little change in strength is forecast during the next 48 hours.

Tropical storm force winds extend outward up to 35 miles, 55 km from the center.

The estimated minimum central pressure is 998 mb, 29.47 inches.

HAZARDS AFFECTING LAND

None.

NEXT ADVISORY
NEXT COMPLETE ADVISORY...1100 PM HST.

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FORECASTER POWELL