343
FZHW51 PHFO 191320
CWFHI1
GENERALIZED STATEWIDE COASTAL WATERS FORECAST FOR HAWAII
NATIONAL WEATHER SERVICE HONOLULU HI
320 AM HST WED AUG 19 2026
SYNOPSIS FOR HAWAIIAN COASTAL WATERS
HIGH PRESSURE FAR NORTHEAST OF THE WATERS WILL REMAIN NEARLY
STATIONARY AND SLOWLY WEAKEN FOR THE NEXT COUPLE OF DAYS. A TROUGH
TO THE EAST OF THE ISLANDS WILL PASS NORTHEAST OF THE ISLANDS
THURSDAY. BY FRIDAY THE HIGH DRIFTS SOUTHWARD CLOSER TO THE
ISLAND CHAIN. HEADING INTO THE WEEKEND, THE POTENTIAL DEVELOPMENT
OF A TROPICAL SYSTEM SOUTHEAST OF THE ISLANDS IS POSSIBLE BUT
UNCERTAINTY REMAINS AS THE SYSTEM HAS YET TO DEVELOP.
HAWAIIAN WATERS WITHIN 40 NAUTICAL MILES INCLUDING THE CHANNELS-
TODAY AND TONIGHT
EAST NORTHEAST WINDS 15 TO 20 KNOTS. SEAS 3
TO 4 FEET. WAVE DETAIL: EAST 4 FEET AT 6 SECONDS. ISOLATED
SHOWERS.
THURSDAY THROUGH FRIDAY
EAST NORTHEAST WINDS 15 TO 20 KNOTS.
SEAS 3 TO 4 FEET. WAVE DETAIL: EAST 3 FEET AT 5 SECONDS. SCATTERED
SHOWERS.
FRIDAY NIGHT...EAST WINDS 7 TO 10 KNOTS TO KAUAI
EAST 15 TO
20 KNOTS ELSEWHERE. SEAS 4 TO 6 FEET. SCATTERED SHOWERS.
SATURDAY
TO KAUAI, EAST WINDS 10 TO 15 KNOTS, BECOMING EAST
NORTHEAST 15 TO 20 KNOTS. ELSEWHERE, EAST NORTHEAST WINDS 20 TO
25 KNOTS. SEAS 5 TO 7 FEET, BUILDING TO 6 TO 9 FEET. ISOLATED
SHOWERS.
SUNDAY
TO KAUAI, EAST NORTHEAST WINDS 15 TO 20 KNOTS, RISING
TO 20 TO 25 KNOTS. ELSEWHERE, EAST NORTHEAST WINDS 25 TO
30 KNOTS. SEAS 8 TO 11 FEET. ISOLATED SHOWERS THROUGH THE NIGHT,
THEN SCATTERED SHOWERS THROUGH THE DAY.
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