Alert archive / Hawaii / High Surf Advisories in 2017
High Surf Advisory 39, NWS Honolulu, HI
NWS Honolulu, HI issued this high surf advisory at Oct 13, 2017, 3:40 PM HST for 4 counties in Hawaii. It took effect at Oct 13, 2017, 3:47 PM HST. It was in force for 7 days.
The area
The counties it named.
The facts
- Issued
- Oct 13, 2017, 3:40 PM HST (01:40 UTC)
- In effect from
- Oct 13, 2017, 3:47 PM HST
- Expired
- Oct 21, 2017, 3:10 AM HST
- In force
- 7 days
- Issued by
- NWS Honolulu, HI
Counties Hawaii County, HI, Honolulu County, HI, Kalawao County, HI, Kauai County, HI
The radar
The Molokai radar (PHMO), 38 km from the middle of the area, began a volume at 01:42 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Lihue, (PHLI), launched 00:00Z, 1.7 hours before the alert went out and 214 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 804 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 940 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.8
The text
As transmitted.
316 WHHW40 PHFO 140140 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 340 PM HST FRI OCT 13 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES... .STRONG TRADES WILL PRODUCE ROUGH AND CHOPPY SURF ALONG THE EAST FACING SHORES THROUGH AT LEAST TUESDAY OF NEXT WEEK. SURF IS EXPECTED TO DROP BELOW ADVISORY LEVELS BY THE LATTER HALF OF THE WEEK WHEN THE WINDS FINALLY WEAKEN. HIZ002-008-009-012-017-020-024-025-141445- /O.NEW.PHFO.SU.Y.0039.171014T0140Z-171018T0000Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 340 PM HST FRI OCT 13 2017 ...HIGH SURF ADVISORY IN EFFECT UNTIL 2 PM HST TUESDAY... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH SURF ADVISORY, WHICH IS IN EFFECT UNTIL 2 PM HST TUESDAY. * SURF...ALONG EAST FACING SHORES...6 TO 10 FEET TONIGHT AND THURSDAY...INCREASING TO 8 TO 12 FEET SUNDAY THROUGH TUESDAY. * TIMING...THROUGH TUESDAY AFTERNOON. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES, SHORE BREAK, AND STRONG LONGSHORE AND RIP CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS, SWIMMERS, AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$
18 follow-up statements
650 WHHW40 PHFO 140147 CCA CFWHFO COASTAL HAZARD MESSAGE...CORRECTED NATIONAL WEATHER SERVICE HONOLULU HI 347 PM HST FRI OCT 13 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES... .STRONG TRADES WILL PRODUCE ROUGH AND CHOPPY SURF ALONG THE EAST FACING SHORES THROUGH AT LEAST TUESDAY OF NEXT WEEK. SURF IS EXPECTED TO DROP BELOW ADVISORY LEVELS BY THE LATTER HALF OF THE WEEK WHEN THE WINDS FINALLY WEAKEN. HIZ002-008-009-012-017-020-024-025-141445- /O.COR.PHFO.SU.Y.0039.171014T0147Z-171018T0000Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 347 PM HST FRI OCT 13 2017 ...HIGH SURF ADVISORY IN EFFECT UNTIL 2 PM HST TUESDAY... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH SURF ADVISORY, WHICH IS IN EFFECT UNTIL 2 PM HST TUESDAY. * SURF...ALONG EAST FACING SHORES...6 TO 10 FEET TONIGHT AND SATURDAY...INCREASING TO 8 TO 12 FEET SUNDAY THROUGH TUESDAY. * TIMING...THROUGH TUESDAY AFTERNOON. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES, SHORE BREAK, AND STRONG LONGSHORE AND RIP CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS, SWIMMERS, AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$
567 WHHW40 PHFO 141325 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 325 AM HST SAT OCT 14 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .STRONG TRADE WINDS NEAR AND UPWIND OF THE ISLANDS WILL PRODUCE ROUGH AND CHOPPY SURF ALONG EAST FACING SHORES FOR THE NEXT SEVERAL DAYS. HIZ002-008-009-012-017-020-024-025-150230- /O.EXT.PHFO.SU.Y.0039.000000T0000Z-171019T0400Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 325 AM HST SAT OCT 14 2017 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 PM HST WEDNESDAY... * SURF...ALONG EAST FACING SHORES...5 TO 8 FEET TODAY...INCREASING TO 6 TO 10 FEET SUNDAY. * TIMING...HIGH SURF WILL CONTINUE THROUGH WEDNESDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ BIRCHARD
657 WHHW40 PHFO 150133 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 333 PM HST SAT OCT 14 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .STRONG TRADE WINDS NEAR AND UPWIND OF THE ISLANDS WILL PRODUCE ROUGH AND CHOPPY SURF ALONG EAST FACING SHORES FOR THE NEXT SEVERAL DAYS. HIZ002-008-009-012-017-020-024-025-151445- /O.CON.PHFO.SU.Y.0039.000000T0000Z-171019T0400Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 333 PM HST SAT OCT 14 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST WEDNESDAY... * SURF...ALONG EAST FACING SHORES...5 TO 8 FEET TONIGHT... INCREASING TO 6 TO 10 FEET SUNDAY. * TIMING...THROUGH WEDNESDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$
541 WHHW40 PHFO 151344 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 344 AM HST SUN OCT 15 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... ...HIGH SURF ADVISORY FOR SOUTH FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI LANAI MAUI AND THE BIG ISLAND FROM NOON TODAY... .STRONG TRADE WINDS NEAR AND UPWIND OF THE ISLANDS WILL PRODUCE ROUGH AND CHOPPY SURF ALONG EAST FACING SHORES FOR THE NEXT SEVERAL DAYS. ADDITIONALLY...A STRONG LOW IN THE SOUTHERN HEMISPHERE GENERATED A SWELL THAT WILL BUILD TODAY AND PEAK MONDAY...RESULTING IN HIGH SURF ALONG SOUTH FACING SHORES. HIZ001-003-005-006-013-014-016-018-019-021-023-026-160245- /O.EXB.PHFO.SU.Y.0039.171015T2200Z-171017T0400Z/ NIIHAU-KAUAI LEEWARD-OAHU SOUTH SHORE-WAIANAE COAST- MOLOKAI LEEWARD-LANAI MAKAI-KAHOOLAWE-MAUI LEEWARD WEST- MAUI CENTRAL VALLEY-LEEWARD HALEAKALA-KONA-KOHALA- 344 AM HST SUN OCT 15 2017 ...HIGH SURF ADVISORY IN EFFECT FROM NOON TODAY TO 6 PM HST MONDAY... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH SURF ADVISORY, WHICH IS IN EFFECT FROM NOON TODAY TO 6 PM HST MONDAY. * SURF...ALONG SOUTH FACING SHORES...4 TO 6 FEET THIS MORNING... INCREASING TO 6 TO 8 FEET THIS AFTERNOON. * TIMING...HIGH SURF ALONG SOUTH FACING SHORES WILL CONTINUE THROUGH MONDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ HIZ002-008-009-012-017-020-024-025-160245- /O.CON.PHFO.SU.Y.0039.000000T0000Z-171019T0400Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 344 AM HST SUN OCT 15 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST WEDNESDAY... * SURF...ALONG EAST FACING SHORES...6 TO 10 FEET. ALONG SOUTH FACING SHORES...4 TO 6 FEET THIS MORNING...INCREASING TO 6 TO 8 FEET THIS AFTERNOON. * TIMING...HIGH SURF ALONG EAST FACING SHORES THROUGH WEDNESDAY. HIGH SURF ALONG SOUTH FACING SHORES THROUGH MONDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ BIRCHARD
177 WHHW40 PHFO 151358 CCA CFWHFO COASTAL HAZARD MESSAGE...CORRECTED NATIONAL WEATHER SERVICE HONOLULU HI 358 AM HST SUN OCT 15 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... ...HIGH SURF ADVISORY FOR SOUTH FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI LANAI KAHOOLAWE MAUI AND THE BIG ISLAND FROM NOON TODAY... .STRONG TRADE WINDS NEAR AND UPWIND OF THE ISLANDS WILL PRODUCE ROUGH AND CHOPPY SURF ALONG EAST FACING SHORES FOR THE NEXT SEVERAL DAYS. ADDITIONALLY...A STRONG LOW IN THE SOUTHERN HEMISPHERE GENERATED A SWELL THAT WILL BUILD TODAY AND PEAK MONDAY...RESULTING IN HIGH SURF ALONG SOUTH FACING SHORES. HIZ001-003-005-006-013-014-016-018-019-021-023-026-160245- /O.COR.PHFO.SU.Y.0039.171015T2200Z-171017T0400Z/ NIIHAU-KAUAI LEEWARD-OAHU SOUTH SHORE-WAIANAE COAST- MOLOKAI LEEWARD-LANAI MAKAI-KAHOOLAWE-MAUI LEEWARD WEST- MAUI CENTRAL VALLEY-LEEWARD HALEAKALA-KONA-KOHALA- 358 AM HST SUN OCT 15 2017 ...HIGH SURF ADVISORY IN EFFECT FROM NOON TODAY TO 6 PM HST MONDAY... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH SURF ADVISORY...WHICH IS IN EFFECT FROM NOON TODAY TO 6 PM HST MONDAY. * SURF...ALONG SOUTH FACING SHORES...4 TO 6 FEET THIS MORNING... INCREASING TO 6 TO 8 FEET THIS AFTERNOON. * TIMING...HIGH SURF ALONG SOUTH FACING SHORES WILL CONTINUE THROUGH MONDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ HIZ002-008-009-012-017-020-024-025-160245- /O.CON.PHFO.SU.Y.0039.000000T0000Z-171019T0400Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 358 AM HST SUN OCT 15 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST WEDNESDAY... * SURF...ALONG EAST FACING SHORES...6 TO 10 FEET. ALONG SOUTH FACING SHORES...4 TO 6 FEET THIS MORNING...INCREASING TO 6 TO 8 FEET THIS AFTERNOON. * TIMING...HIGH SURF ALONG EAST FACING SHORES THROUGH WEDNESDAY. HIGH SURF ALONG SOUTH FACING SHORES THROUGH MONDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ BIRCHARD
624 WHHW40 PHFO 160151 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 351 PM HST SUN OCT 15 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... ...HIGH SURF ADVISORY FOR SOUTH FACING SHORES OF ALL ISLANDS... .STRONG TRADE WINDS NEAR AND UPWIND OF THE ISLANDS WILL PRODUCE ROUGH AND CHOPPY SURF ALONG EAST FACING SHORES FOR THE NEXT SEVERAL DAYS. ADDITIONALLY...A STRONG LOW IN THE SOUTHERN HEMISPHERE GENERATED A SWELL THAT WILL BUILD THROUGH TONIGHT AND PEAK MONDAY...RESULTING IN HIGH SURF ALONG SOUTH FACING SHORES. HIZ001-003-005-006-013-014-016-018-019-021-023-026-161500- /O.CON.PHFO.SU.Y.0039.000000T0000Z-171017T0400Z/ NIIHAU-KAUAI LEEWARD-OAHU SOUTH SHORE-WAIANAE COAST- MOLOKAI LEEWARD-LANAI MAKAI-KAHOOLAWE-MAUI LEEWARD WEST- MAUI CENTRAL VALLEY-LEEWARD HALEAKALA-KONA-KOHALA- 351 PM HST SUN OCT 15 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST MONDAY... * SURF...ALONG SOUTH FACING SHORES...6 TO 8 FEET THROUGH MONDAY. * TIMING...HIGH SURF ALONG SOUTH FACING SHORES WILL CONTINUE THROUGH MONDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ HIZ002-008-009-012-017-020-024-025-161500- /O.CON.PHFO.SU.Y.0039.000000T0000Z-171019T0400Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 351 PM HST SUN OCT 15 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST WEDNESDAY... * SURF...ALONG EAST FACING SHORES...6 TO 10 FEET. ALONG SOUTH FACING SHORES...6 TO 8 FEET. * TIMING...HIGH SURF ALONG EAST FACING SHORES THROUGH WEDNESDAY. HIGH SURF ALONG SOUTH FACING SHORES THROUGH MONDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$
955 WHHW40 PHFO 161309 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 309 AM HST MON OCT 16 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... ...HIGH SURF ADVISORY FOR SOUTH FACING SHORES OF ALL ISLANDS... .STRONG TRADE WINDS AROUND AND UPWIND OF THE ISLANDS WILL PRODUCE ROUGH AND CHOPPY SEAS AND ELEVATED SURF ALONG EAST FACING SHORES FOR THE NEXT SEVERAL DAYS. ADDITIONALLY...AN ELEVATED SWELL FROM THE SOUTH WILL MAINTAIN ADVISORY LEVEL SURF FOR THE SOUTH FACING SHORES TODAY. HIZ001-003-005-006-013-014-016-018-019-021-023-026-170215- /O.CON.PHFO.SU.Y.0039.000000T0000Z-171017T0400Z/ NIIHAU-KAUAI LEEWARD-OAHU SOUTH SHORE-WAIANAE COAST- MOLOKAI LEEWARD-LANAI MAKAI-KAHOOLAWE-MAUI LEEWARD WEST- MAUI CENTRAL VALLEY-LEEWARD HALEAKALA-KONA-KOHALA- 309 AM HST MON OCT 16 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING... * SURF...ALONG SOUTH FACING SHORES...6 TO 8 FEET. * TIMING...HIGH SURF ALONG SOUTH FACING SHORES FOR TODAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... ALONG SOUTH FACING SHORES...6 TO 8 FEET. BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ HIZ002-008-009-012-017-020-024-025-170215- /O.CON.PHFO.SU.Y.0039.000000T0000Z-171019T0400Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 309 AM HST MON OCT 16 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST WEDNESDAY... * SURF...ALONG EAST FACING SHORES...6 TO 10 FEET. * TIMING...HIGH SURF ALONG EAST FACING SHORES THROUGH WEDNESDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ LAU
330 WHHW40 PHFO 161602 CCA CFWHFO COASTAL HAZARD MESSAGE...CORRECTED NATIONAL WEATHER SERVICE HONOLULU HI 602 AM HST MON OCT 16 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... ...HIGH SURF ADVISORY FOR SOUTH FACING SHORES OF ALL ISLANDS... .STRONG TRADE WINDS AROUND AND UPWIND OF THE ISLANDS WILL PRODUCE ROUGH AND CHOPPY SEAS AND ELEVATED SURF ALONG EAST FACING SHORES FOR THE NEXT SEVERAL DAYS. ADDITIONALLY...AN ELEVATED SWELL FROM THE SOUTH WILL MAINTAIN ADVISORY LEVEL SURF FOR THE SOUTH FACING SHORES TODAY. HIZ001-003-005-006-013-014-016-018-019-021-023-026-170215- /O.COR.PHFO.SU.Y.0039.000000T0000Z-171017T0400Z/ NIIHAU-KAUAI LEEWARD-OAHU SOUTH SHORE-WAIANAE COAST- MOLOKAI LEEWARD-LANAI MAKAI-KAHOOLAWE-MAUI LEEWARD WEST- MAUI CENTRAL VALLEY-LEEWARD HALEAKALA-KONA-KOHALA- 602 AM HST MON OCT 16 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING... * SURF...ALONG SOUTH FACING SHORES...6 TO 8 FEET. * TIMING...HIGH SURF ALONG SOUTH FACING SHORES FOR TODAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ HIZ002-008-009-012-017-020-024-025-170215- /O.CON.PHFO.SU.Y.0039.000000T0000Z-171019T0400Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 602 AM HST MON OCT 16 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST WEDNESDAY... * SURF...ALONG EAST FACING SHORES...6 TO 10 FEET. * TIMING...HIGH SURF ALONG EAST FACING SHORES THROUGH WEDNESDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$
251 WHHW40 PHFO 170148 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 348 PM HST MON OCT 16 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... ...HIGH SURF ADVISORY FOR SOUTH FACING SHORES OF ALL ISLANDS... .STRONG TRADE WINDS AROUND AND UPWIND OF THE ISLANDS WILL PRODUCE ROUGH AND CHOPPY SEAS AND ELEVATED SURF ALONG EAST FACING SHORES FOR THE NEXT SEVERAL DAYS. ADDITIONALLY...AN ELEVATED SWELL FROM THE SOUTH WILL MAINTAIN ADVISORY LEVEL SURF FOR THE SOUTH FACING SHORES THROUGH TUESDAY. HIZ001-003-005-006-013-014-016-018-019-021-023-026-171500- /O.EXT.PHFO.SU.Y.0039.000000T0000Z-171018T0400Z/ NIIHAU-KAUAI LEEWARD-OAHU SOUTH SHORE-WAIANAE COAST- MOLOKAI LEEWARD-LANAI MAKAI-KAHOOLAWE-MAUI LEEWARD WEST- MAUI CENTRAL VALLEY-LEEWARD HALEAKALA-KONA-KOHALA- 348 PM HST MON OCT 16 2017 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 PM HST TUESDAY... * SURF...ALONG SOUTH FACING SHORES...7 TO 10 FEET TONIGHT...LOWERING TO 5 TO 8 FEET TUESDAY. * TIMING...HIGH SURF ALONG SOUTH FACING SHORES THROUGH TUESDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ HIZ002-008-009-012-017-020-024-025-171500- /O.CON.PHFO.SU.Y.0039.000000T0000Z-171019T0400Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 348 PM HST MON OCT 16 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST WEDNESDAY... * SURF...ALONG EAST FACING SHORES...7 TO 10 FEET. * TIMING...HIGH SURF ALONG EAST FACING SHORES THROUGH WEDNESDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$
758 WHHW40 PHFO 171334 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 334 AM HST TUE OCT 17 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... ...HIGH SURF ADVISORY FOR SOUTH FACING SHORES OF ALL ISLANDS... .STRONG TRADE WINDS NEAR AND UPWIND OF THE ISLANDS WILL MAINTAIN ELEVATED ROUGH SURF ALONG MOST EAST FACING SHORES THROUGH MID- WEEK. IN ADDITION...A LARGE SOUTH SWELL WILL PRODUCE ABOVE NORMAL SURF ALONG ALL SOUTH FACING SHORES TODAY. HIZ001-003-005-006-013-014-016-018-019-021-023-026-180245- /O.CON.PHFO.SU.Y.0039.000000T0000Z-171018T0400Z/ NIIHAU-KAUAI LEEWARD-OAHU SOUTH SHORE-WAIANAE COAST- MOLOKAI LEEWARD-LANAI MAKAI-KAHOOLAWE-MAUI LEEWARD WEST- MAUI CENTRAL VALLEY-LEEWARD HALEAKALA-KONA-KOHALA- 334 AM HST TUE OCT 17 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING... * SURF...ALONG SOUTH FACING SHORES...5 TO 8 FEET. * TIMING...THROUGH THIS AFTERNOON. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ HIZ002-008-009-012-017-020-024-025-180245- /O.CON.PHFO.SU.Y.0039.000000T0000Z-171019T0400Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 334 AM HST TUE OCT 17 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST WEDNESDAY... * SURF...ALONG EAST FACING SHORES...7 TO 10 FEET. ALONG SOUTH FACING SHORES...5 TO 8 FEET. * TIMING...ALONG EAST FACING SHORES THROUGH WEDNESDAY...AND ALONG SOUTH FACING SHORES THROUGH THIS AFTERNOON * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ HOUSTON
941 WHHW40 PHFO 180138 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 338 PM HST TUE OCT 17 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... ...HIGH SURF ADVISORY FOR SOUTH FACING SHORES OF ALL ISLANDS... .STRONG TRADE WINDS NEAR AND UPWIND OF THE ISLANDS WILL MAINTAIN ELEVATED ROUGH SURF ALONG MOST EAST FACING SHORES THROUGH MID- WEEK. IN ADDITION...A LARGE SOUTH SWELL WILL PRODUCE ABOVE NORMAL SURF ALONG ALL SOUTH FACING SHORES TODAY. HIZ001-003-005-006-013-014-016-018-019-021-023-026-180245- /O.CAN.PHFO.SU.Y.0039.000000T0000Z-171018T0400Z/ NIIHAU-KAUAI LEEWARD-OAHU SOUTH SHORE-WAIANAE COAST- MOLOKAI LEEWARD-LANAI MAKAI-KAHOOLAWE-MAUI LEEWARD WEST- MAUI CENTRAL VALLEY-LEEWARD HALEAKALA-KONA-KOHALA- 338 PM HST TUE OCT 17 2017 ...HIGH SURF ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS CANCELLED THE HIGH SURF ADVISORY. ASIDE FROM A FEW HIGHER SETS, SURF ALONG THE SOUTH FACING SHORES HAS MOSTLY DROPPED BELOW ADVISORY LEVEL. THE SOUTH SWELL AND CORRESPONDING SURF WILL CONTINUE TO DECREASE THROUGH WEDNESDAY. $$ HIZ002-008-009-012-017-020-024-025-181445- /O.CON.PHFO.SU.Y.0039.000000T0000Z-171019T0400Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 338 PM HST TUE OCT 17 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST WEDNESDAY... * SURF...ALONG EAST FACING SHORES...7 TO 10 FEET. * TIMING...THROUGH WEDNESDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$
370 WHHW40 PHFO 180209 CCA CFWHFO COASTAL HAZARD MESSAGE...CORRECTED NATIONAL WEATHER SERVICE HONOLULU HI 409 PM HST TUE OCT 17 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .STRONG TRADE WINDS NEAR AND UPWIND OF THE ISLANDS WILL MAINTAIN ELEVATED ROUGH SURF ALONG MOST EAST FACING SHORES THROUGH MID- WEEK. HIZ001-003-005-006-013-014-016-018-019-021-023-026-180245- /O.CAN.PHFO.SU.Y.0039.000000T0000Z-171018T0400Z/ NIIHAU-KAUAI LEEWARD-OAHU SOUTH SHORE-WAIANAE COAST- MOLOKAI LEEWARD-LANAI MAKAI-KAHOOLAWE-MAUI LEEWARD WEST- MAUI CENTRAL VALLEY-LEEWARD HALEAKALA-KONA-KOHALA- 409 PM HST TUE OCT 17 2017 ...HIGH SURF ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS CANCELLED THE HIGH SURF ADVISORY. ASIDE FROM A FEW HIGHER SETS, SURF ALONG THE SOUTH FACING SHORES HAS MOSTLY DROPPED BELOW ADVISORY LEVEL. THE SOUTH SWELL AND CORRESPONDING SURF WILL CONTINUE TO DECREASE THROUGH WEDNESDAY. $$ HIZ002-008-009-012-017-020-024-025-181445- /O.CON.PHFO.SU.Y.0039.000000T0000Z-171019T0400Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 409 PM HST TUE OCT 17 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST WEDNESDAY... * SURF...ALONG EAST FACING SHORES...7 TO 10 FEET. * TIMING...THROUGH WEDNESDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$
856 WHHW40 PHFO 181356 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 356 AM HST WED OCT 18 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES... .DANGEROUS BEACH CONDITIONS WILL CONTINUE ALONG EAST FACING SHORES THROUGH THURSDAY DUE TO ROUGH SURF AND STRONG CURRENTS. HIZ002-008-009-012-017-020-024-025-190300- /O.EXT.PHFO.SU.Y.0039.000000T0000Z-171020T0400Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 356 AM HST WED OCT 18 2017 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 PM HST THURSDAY... * SURF...ALONG EAST FACING SHORES...6 TO 9 FEET. * TIMING...THROUGH THURSDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ GIBBS
149 WHHW40 PHFO 190131 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 331 PM HST WED OCT 18 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES... .DANGEROUS BEACH CONDITIONS WILL CONTINUE ALONG EAST FACING SHORES THROUGH THURSDAY DUE TO ROUGH SURF AND STRONG CURRENTS. HIZ002-008-009-012-017-020-024-025-191445- /O.CON.PHFO.SU.Y.0039.000000T0000Z-171020T0400Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 331 PM HST WED OCT 18 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST THURSDAY... * SURF...ALONG EAST FACING SHORES...6 TO 9 FEET. * TIMING...THROUGH THURSDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$
576 WHHW40 PHFO 191336 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 336 AM HST THU OCT 19 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES... .DANGEROUS BEACH CONDITIONS WILL CONTINUE ALONG EAST FACING SHORES THROUGH FRIDAY DUE TO ROUGH SURF AND STRONG CURRENTS. HIZ002-008-009-012-017-020-024-025-200245- /O.EXT.PHFO.SU.Y.0039.000000T0000Z-171021T0400Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 336 AM HST THU OCT 19 2017 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 PM HST FRIDAY... * SURF...ALONG EAST FACING SHORES...6 TO 9 FEET. * TIMING...THROUGH LATE FRIDAY AFTERNOON. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ GIBBS
656 WHHW40 PHFO 201328 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 328 AM HST FRI OCT 20 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .STRONG TRADE WINDS NEAR AND UPWIND OF THE ISLANDS WILL MAINTAIN ROUGH SURF ALONG EAST FACING SHORES THROUGH TONIGHT. HIZ002-008-009-012-017-020-024-025-210230- /O.EXT.PHFO.SU.Y.0039.000000T0000Z-171021T1600Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 328 AM HST FRI OCT 20 2017 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 AM HST SATURDAY... * SURF...ALONG EAST FACING SHORES...6 TO 9 FEET. * TIMING...THROUGH EARLY SATURDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BEACHGOERS...SWIMMERS AND SURFERS SHOULD HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. IF IN DOUBT...DO NOT GO OUT. && $$ BIRCHARD
637 WHHW40 PHFO 210128 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 328 PM HST FRI OCT 20 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .STRONG TRADE WINDS WILL MAINTAIN ROUGH SURF ALONG EAST FACING SHORES THROUGH TONIGHT. HIZ002-008-009-012-017-020-024-025-211430- /O.CON.PHFO.SU.Y.0039.000000T0000Z-171021T1600Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 328 PM HST FRI OCT 20 2017 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 600 AM SATURDAY... * SURF...ALONG EAST FACING SHORES...6 TO 9 FEET. * TIMING...THROUGH EARLY SATURDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES...SHORE BREAK AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS...HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. IF IN DOUBT...DO NOT GO OUT. && $$
349 WHHW40 PHFO 211310 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 310 AM HST SAT OCT 21 2017 HIZ002-008-009-012-017-020-024-025-211415- /O.CAN.PHFO.SU.Y.0039.000000T0000Z-171021T1600Z/ KAUAI WINDWARD-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MAUI WINDWARD WEST-WINDWARD HALEAKALA-SOUTH BIG ISLAND- BIG ISLAND NORTH AND EAST- 310 AM HST SAT OCT 21 2017 ...HIGH SURF ADVISORY FOR EAST FACING SHORES IS CANCELLED... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS CANCELLED THE HIGH SURF ADVISORY. SURF ALONG EAST FACING SHORES HAS DIMINISHED BELOW ADVISORY LEVELS. $$ BIRCHARD
What forecasters said that day
The local office's own words before this high surf advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Honolulu, HI wrote its last area forecast discussion before this high surf advisory went out at Oct 13, 10:16 AM HST, 5 hours 24 minutes earlier.
Area forecast discussion, Oct 13, 10:16 AM HST, 5 hours 24 minutes before
Area Forecast Discussion National Weather Service Honolulu HI 1016 AM HST Fri Oct 13 2017 .SYNOPSIS... The trade winds will slowly strengthen through tonight, as a trough of low pressure shifts westward across the island chain. An unstable airmass will persist over the state through tonight, with locally heavy rainfall and thunderstorms possible across portions of the island chain. More settled trade wind weather will return Saturday into next week with trades becoming breezy on Saturday and locally windy Sunday through much of next week as a strong area of high pressure remains to the north of the state. && .DISCUSSION... Currently at the surface, a trough of low pressure is in the vicinity of the central islands this morning, with a 1041 mb high centered around 1700 miles to the north-northeast of Honolulu. The wind fields have been disrupted by convective outflow boundaries, with a general light trade wind regime over Kauai and Oahu and moderate trades over Maui and the Big Island at the moment. Visible satellite imagery shows partly to mostly cloudy skies in place across the State, with cloud cover most prevalent over windward areas. Meanwhile, radar imagery shows scattered windward and mauka showers over the smaller islands, with more widespread showers and isolated thunderstorms affecting the Big Island. Main short term concern continues to revolve around the potential for additional thunderstorms and heavy rainfall through tonight. Rest of Today and tonight, The surface trough over the central islands this morning, will shift in the western islands this afternoon and then exit off to the west of the State tonight. Meanwhile aloft, upper level troughing will remain in place over the island chain, keeping the airmass unstable. With plenty of deep layer moisture over the islands with precipitable water (PW) values 1.6 to 2.0 inches, along with the surface trough and unstable airmass, the threat for additional heavy rainfall and thunderstorms will continue through tonight. The trades will slowly strengthen through the period, keeping most of the shower activity over windward and mauka areas, but some shower development is also expected over leeward areas as well due to the unstable airmass in place. With the strengthening trade winds, the threat for flash flooding is not particularly high as the showers and storms should be moving along and not anchoring in any particular location. That said, some minor flooding may impact portions of the island chain given the unstable conditions, and the expectation is that any heavy rainfall will be able to be handled with flood advisories. Saturday through Thursday, The surface trough is expected to shift westward and further away from the islands, while a strong surface high remains in place to the north and northeast of the State. This will bring a return of breezy trade winds on Saturday, with locally windy and quite gusty conditions expected Sunday through the much of next week. In fact, some areas may reach wind advisory thresholds Sunday through Thursday, with the GFS and ECMWF both indicating that the trades will really get cranking. As for sensible weather details, the most unstable weather will shift westward with the surface trough Saturday morning. Can't rule out some lingering thunder potential over the western islands Saturday morning, and the Big Island Saturday afternoon. By Saturday night however, the airmass should have stabilized sufficiently, such that the threat for thunder will no longer exist. Upper level troughing and deep layer moisture will remain over the state through Sunday, so fairly wet trade wind weather is expected through the weekend. Although an upper level weakness will remain in place in the vicinity of the islands through much of next week, PW values drop considerably Sunday night through late next week, so we should see a more typical trade wind shower regime return to the island chain. Showers will continue to favor windward and mauka areas through the period, with showers occasionally reaching leeward areas due to the strength of the trades. && .AVIATION... An upper level trough will provide enough forcing for locally heavy showers and possibly thunderstorms statewide today. SIGMET November is currently in effect for embedded thunderstorms over the waters north and east of the Big Island and Maui. Threats associated with thunderstorm activity include icing, turbulence, gusty erratic winds, and lightning. Conditions are anticipated to persist through at least the evening hours. Otherwise, the trade winds will slowly strengthen across the State through tonight, reaching breezy levels by Saturday afternoon. Clouds and Showers will favor windward and mauka areas, with some shower development expected over leeward areas as well this afternoon into this evening. AIRMET Sierra for Mountain Obscuration along windward slopes will likely remain necessary through at least this evening. && .MARINE... Trade winds will continue to fill in and strengthen into the fresh to strong category today through this weekend as strong high pressure becomes established north of the waters. A Small Craft Advisory is now in effect for the typically windier channel waters, and will likely be expanded to cover all marine areas by the end of the weekend. Fresh to strong winds and rough seas will continue through early next week. In addition to the winds and seas, heavy showers and thunderstorms will remain in the forecast through tonight as an upper trough lingers over the area. Surf along east facing shores will continue to rise over the weekend and become rough due to the elevated trades locally and upstream of the islands. Overnight ASCAT and altimetry data showed a band of strong trades and seas up to 12-14 ft a few hundred nm north and northeast of the marine areas. Surf will likely reach advisory-levels by Sunday, then continue into the middle of next week. Surf along north facing shores will remain small into Saturday with mainly trade wind energy wrapping into the typical locations. An upward trend is anticipated over the weekend as wave models show a small, long-period northwest (330 deg) swell filling in locally by Sunday. Surf will rise along exposed north and west facing shores with a peak through the day Sunday, but remain well below advisory levels. Swell and surf will slowly trend down early next week. Small, long-period, south and south-southwest (170-220 deg) pulses from the southern Pacific will keep the surf from going flat along south facing shores through Friday. An upward trend is anticipated over the weekend into early next week due to a gale- to storm- force low that developed southeast of New Zealand earlier this week. Surf from this long-period source is expected to fill in Saturday, peak late Sunday into Monday (from 180 deg), then trend down into midweek. Given the WAVEWATCH III low bias associated with these sources, swell heights have been adjusted up somewhat, making advisory-level surf likely around the peak Sunday through Monday. For the long-range, a small to moderate northwest swell is projected to fill in locally Thursday night and hold into the weekend. Surf will likely remain below advisory levels along north and west facing shores as this swell peaks. The active pattern is progged to continue over the southern Pacific within Hawaii's swell window, potentially sending another small to moderate south- southwest swell next weekend (10/21-10/23) over the local waters. && .HFO WATCHES/WARNINGS/ADVISORIES... Small Craft Advisory until 6 PM HST Monday for Maui County Windward Waters-Maalaea Bay-Pailolo Channel-Alenuihaha Channel- Big Island Leeward Waters-Big Island Southeast Waters. && DISCUSSION...Jelsema AVIATION...Bedal MARINE...TS
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 7:36 PM HST | Areal Flood Advisory | HFO | Hawaii | 3 hr |
| Oct 13, 8:29 PM HST | Areal Flood Advisory | HFO | Kauai | 3 hr |
| Oct 13, 9:07 PM HST | Gale Watch | HFO | 31 hr | |
| Oct 13, 11:32 PM HST | Areal Flood Advisory | HFO | Kauai | 3 hr |
Nearby
High Surf Advisories in Hawaii, 2017Every high surf advisory in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.