Alert archive / Hawaii / High Surf Warnings in 2016
High Surf Warning 20, NWS Honolulu, HI
NWS Honolulu, HI issued this high surf warning at Nov 6, 2016, 3:25 PM HST for Honolulu County, Kauai County, Kalawao County, Hawaii. It took effect at Nov 7, 2016, 3:47 AM HST. It was in force for 48 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Nov 6, 2016, 3:25 PM HST (01:25 UTC)
- In effect from
- Nov 7, 2016, 3:47 AM HST
- Expired
- Nov 9, 2016, 3:31 AM HST
- In force
- 48 hr
- Issued by
- NWS Honolulu, HI
Counties Honolulu County, HI, Kalawao County, HI, Kauai County, HI
The radar
The Molokai radar (PHMO), 116 km from the middle of the area, began a volume at 01:27 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, 1.4 hours before the alert went out and 127 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1288 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
984 WHHW40 PHFO 070125 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 325 PM HST SUN NOV 6 2016 ...HIGH SURF WARNING FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND NORTH FACING SHORES OF MAUI AND THE BIG ISLAND... .A LARGE NORTH-NORTHWEST SWELL WILL BUILD RAPIDLY MONDAY BRINGING WARNING LEVEL SURF TO EXPOSED NORTH AND WEST FACING SHORES OF KAUAI COUNTY IN THE MORNING...THEN OAHU AND MAUI COUNTY DURING THE DAY...AND THE BIG ISLAND BY EVENING. WARNING LEVEL SURF WILL CONTINUE THROUGH TUESDAY. HIZ001>003-006>009-012-013-017-019-020-025-071430- /O.NEW.PHFO.SU.W.0020.161107T1600Z-161109T0400Z/ NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-WAIANAE COAST- OAHU NORTH SHORE-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MOLOKAI LEEWARD-MAUI WINDWARD WEST-MAUI CENTRAL VALLEY- WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST- 325 PM HST SUN NOV 6 2016 ...HIGH SURF WARNING IN EFFECT FROM 6 AM MONDAY TO 6 PM HST TUESDAY... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH SURF WARNING...WHICH IS IN EFFECT FROM 6 AM MONDAY TO 6 PM HST TUESDAY. * SURF...30 TO 40 FT ALONG NORTH AND WEST FACING SHORES OF NIIHAU KAUAI AND MOLOKAI AND NORTH FACING SHORES OF OAHU AND MAUI. SURF 20 TO 30 FT ALONG WEST FACING SHORES OF OAHU AND NORTH FACING SHORES OF THE BIG ISLAND. * TIMING...SURF WILL RISE RAPIDLY MONDAY MORNING ACROSS KAUAI...REACH OAHU AND MAUI COUNTY BY MIDDAY AND THEN THE BIG ISLAND IN THE EVENING. * IMPACTS...HIGH...EXPECT OCEAN WATER OCCASIONALLY SWEEPING ACROSS PORTIONS OF BEACHES...VERY STRONG BREAKING WAVES AND STRONG LONGSHORE AND RIP CURRENTS. BREAKING WAVES MAY OCCASIONALLY IMPACT HARBORS MAKING NAVIGATING THE HARBOR CHANNEL DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... THESE DANGEROUS CONDITIONS MEAN THAT ONLY HIGHLY EXPERIENCED PERSONS SHOULD ENTER THE WATER. INEXPERIENCED PERSONS SHOULD REMAIN OFF BEACHES AND ADJACENT BEACHFRONT AREAS. LARGE BREAKING SURF...SIGNIFICANT SHOREBREAK...AND DANGEROUS CURRENTS MAKE ENTERING THE WATER VERY HAZARDOUS. ANYONE ENTERING THE WATER COULD FACE SIGNIFICANT INJURY OR DEATH. && $$ MORRISON
6 follow-up statements
607 WHHW40 PHFO 071347 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 347 AM HST MON NOV 7 2016 ...HIGH SURF WARNING FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND NORTH FACING SHORES OF MAUI AND THE BIG ISLAND... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF WEST MAUI... .A LARGE NORTH-NORTHWEST SWELL WILL BUILD RAPIDLY TODAY...BRINGING WARNING LEVEL SURF TO EXPOSED NORTH AND WEST FACING SHORES OF KAUAI COUNTY THIS MORNING...THEN OAHU AND MAUI COUNTY THIS AFTERNOON...AND THE BIG ISLAND BY EARLY THIS EVENING. WARNING LEVEL SURF WILL CONTINUE THROUGH TUESDAY. HIZ001>003-006>009-012-013-017-019-020-025-080400- /O.EXT.PHFO.SU.W.0020.161107T1347Z-161109T0400Z/ NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-WAIANAE COAST- OAHU NORTH SHORE-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MOLOKAI LEEWARD-MAUI WINDWARD WEST-MAUI CENTRAL VALLEY- WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST- 347 AM HST MON NOV 7 2016 ...HIGH SURF WARNING NOW IN EFFECT UNTIL 6 PM HST TUESDAY... * SURF...30 TO 40 FT ALONG NORTH AND WEST FACING SHORES OF NIIHAU KAUAI AND MOLOKAI AND NORTH FACING SHORES OF OAHU AND MAUI. SURF 20 TO 30 FT ALONG WEST FACING SHORES OF OAHU AND NORTH FACING SHORES OF THE BIG ISLAND. * TIMING...SURF WILL RISE RAPIDLY THIS MORNING ACROSS KAUAI... REACHING OAHU AND MAUI COUNTY THIS AFTERNOON...AND THE BIG ISLAND BY EARLY THIS EVENING. SURF WILL REMAIN ELEVATED THROUGH TUESDAY. * IMPACTS...HIGH...EXPECT OCEAN WATER OCCASIONALLY SWEEPING ACROSS PORTIONS OF BEACHES...VERY STRONG BREAKING WAVES AND STRONG LONGSHORE AND RIP CURRENTS. BREAKING WAVES MAY OCCASIONALLY IMPACT HARBORS MAKING NAVIGATING THE HARBOR CHANNEL DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... THESE DANGEROUS CONDITIONS MEAN THAT ONLY HIGHLY EXPERIENCED PERSONS SHOULD ENTER THE WATER. INEXPERIENCED PERSONS SHOULD REMAIN OFF BEACHES AND ADJACENT BEACHFRONT AREAS. LARGE BREAKING SURF...SIGNIFICANT SHOREBREAK...AND DANGEROUS CURRENTS MAKE ENTERING THE WATER VERY HAZARDOUS. ANYONE ENTERING THE WATER COULD FACE SIGNIFICANT INJURY OR DEATH. && $$ HIZ018-080400- /O.NEW.PHFO.SU.Y.0049.161107T1347Z-161109T0400Z/ MAUI LEEWARD WEST- 347 AM HST MON NOV 7 2016 ...HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM HST TUESDAY... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH SURF ADVISORY...WHICH IS IN EFFECT UNTIL 6 PM HST TUESDAY. * SURF...10 TO 15 FEET ALONG WEST FACING SHORES OF WEST MAUI. * TIMING...LATE THIS AFTERNOON THROUGH TUESDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG CURRENTS MAKING SWIMMING DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$
489 WHHW40 PHFO 080143 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 343 PM HST MON NOV 7 2016 ...HIGH SURF WARNING FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND NORTH FACING SHORES OF MAUI AND THE BIG ISLAND... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF WEST MAUI... .A LARGE NORTH-NORTHWEST SWELL WILL CONTINUE TO BUILD TONIGHT... BRINGING WARNING LEVEL SURF TO EXPOSED NORTH AND WEST FACING SHORES THAT WILL CONTINUE THROUGH TUESDAY. THE SWELL WILL CONTINUE TO SUBSIDE WEDNESDAY. HIZ001>003-006>009-012-013-017-019-020-025-081445- /O.CON.PHFO.SU.W.0020.000000T0000Z-161109T0400Z/ NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-WAIANAE COAST- OAHU NORTH SHORE-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MOLOKAI LEEWARD-MAUI WINDWARD WEST-MAUI CENTRAL VALLEY- WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST- 343 PM HST MON NOV 7 2016 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM HST TUESDAY... * SURF...30 TO 40 FT ALONG NORTH AND WEST FACING SHORES OF NIIHAU...KAUAI...AND MOLOKAI...AND NORTH FACING SHORES OF OAHU AND MAUI. SURF OF 20 TO 30 FT ALONG WEST FACING SHORES OF OAHU AND NORTH FACING SHORES OF THE BIG ISLAND. * TIMING...SURF WILL CONTINUE TO RISE OVERNIGHT...BEFORE BEGINNING TO SUBSIDE TUESDAY...WHILE REMAINING ABOVE WARNING LEVELS. * IMPACTS...HIGH...EXPECT OCEAN WATER OCCASIONALLY SWEEPING ACROSS PORTIONS OF BEACHES...VERY STRONG BREAKING WAVES AND STRONG LONGSHORE AND RIP CURRENTS. BREAKING WAVES MAY OCCASIONALLY IMPACT HARBORS MAKING NAVIGATING THE HARBOR CHANNEL DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... THESE DANGEROUS CONDITIONS MEAN THAT ONLY HIGHLY EXPERIENCED PERSONS SHOULD ENTER THE WATER. INEXPERIENCED PERSONS SHOULD REMAIN OFF BEACHES AND ADJACENT BEACHFRONT AREAS. LARGE BREAKING SURF...SIGNIFICANT SHOREBREAK...AND DANGEROUS CURRENTS MAKE ENTERING THE WATER VERY HAZARDOUS. ANYONE ENTERING THE WATER COULD FACE SIGNIFICANT INJURY OR DEATH. && $$ HIZ018-081445- /O.CON.PHFO.SU.Y.0049.000000T0000Z-161109T0400Z/ MAUI LEEWARD WEST- 343 PM HST MON NOV 7 2016 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST TUESDAY... * SURF...10 TO 15 FEET ALONG WEST FACING SHORES OF WEST MAUI. * TIMING...THROUGH TUESDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG CURRENTS MAKING SWIMMING DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$
918 WHHW40 PHFO 081356 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 356 AM HST TUE NOV 8 2016 ...HIGH SURF WARNING FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND NORTH FACING SHORES OF MAUI AND THE BIG ISLAND... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF WEST MAUI... .WARNING-LEVEL SURF ASSOCIATED WITH A VERY LARGE NORTH-NORTHWEST SWELL WILL CONTINUE TO IMPACT THE EXPOSED NORTH AND WEST FACING BEACHES THROUGH TODAY. THE SURF SHOULD DROP TO ADVISORY LEVELS BY THIS EVENING AND HOLD THROUGH TONIGHT...THEN BELOW ADVISORY LEVELS WEDNESDAY. HIZ001>003-006>009-012-013-017-019-020-025-090300- /O.CON.PHFO.SU.W.0020.000000T0000Z-161109T0400Z/ NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-WAIANAE COAST- OAHU NORTH SHORE-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MOLOKAI LEEWARD-MAUI WINDWARD WEST-MAUI CENTRAL VALLEY- WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST- 356 AM HST TUE NOV 8 2016 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING... * SURF...25 TO 35 FT...ALONG NORTH AND WEST FACING SHORES OF NIIHAU...KAUAI...AND MOLOKAI...AND NORTH FACING SHORES OF OAHU AND MAUI EARLY...LOWERING TO 18 TO 25 FT IN THE AFTERNOON. SURF 18 TO 25 FT ALONG WEST FACING SHORES OF OAHU AND NORTH FACING SHORES OF THE BIG ISLAND...LOWERING TO 15 TO 20 FT IN THE AFTERNOON ON OAHU. * TIMING...SURF WILL GRADUALLY SUBSIDE THROUGH THE DAY FROM WEST TO EAST...WHILE REMAINING ABOVE WARNING LEVELS. SURF WILL DROP TO ADVISORY LEVELS TONIGHT ALONG THE EXPOSED SHORES AND LIKELY BELOW ADVISORY-LEVELS WEDNESDAY. * IMPACTS...HIGH...EXPECT OCEAN WATER OCCASIONALLY SWEEPING ACROSS PORTIONS OF BEACHES...VERY STRONG BREAKING WAVES AND STRONG LONGSHORE AND RIP CURRENTS. BREAKING WAVES MAY OCCASIONALLY IMPACT HARBORS MAKING NAVIGATING THE HARBOR CHANNEL DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... THESE DANGEROUS CONDITIONS MEAN THAT ONLY HIGHLY EXPERIENCED PERSONS SHOULD ENTER THE WATER. INEXPERIENCED PERSONS SHOULD REMAIN OFF BEACHES AND ADJACENT BEACHFRONT AREAS. LARGE BREAKING SURF...SIGNIFICANT SHOREBREAK...AND DANGEROUS CURRENTS MAKE ENTERING THE WATER VERY HAZARDOUS. ANYONE ENTERING THE WATER COULD FACE SIGNIFICANT INJURY OR DEATH. && $$ HIZ018-090300- /O.CON.PHFO.SU.Y.0049.000000T0000Z-161109T0400Z/ MAUI LEEWARD WEST- 356 AM HST TUE NOV 8 2016 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING... * SURF...10 TO 15 FEET ALONG WEST FACING SHORES OF WEST MAUI. * TIMING...THROUGH TODAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG CURRENTS MAKING SWIMMING DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ GIBBS
060 WHHW40 PHFO 081507 AAA CFWHFO COASTAL HAZARD MESSAGE...UPDATED NATIONAL WEATHER SERVICE HONOLULU HI 507 AM HST TUE NOV 8 2016 ...HIGH SURF WARNING FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND NORTH FACING SHORES OF MAUI AND THE BIG ISLAND... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF WEST MAUI... .WARNING-LEVEL SURF ASSOCIATED WITH A VERY LARGE NORTH-NORTHWEST SWELL WILL CONTINUE TO IMPACT THE EXPOSED NORTH AND WEST FACING BEACHES THROUGH TODAY. THE SURF SHOULD DROP TO ADVISORY LEVELS BY THIS EVENING AND HOLD THROUGH TONIGHT...THEN BELOW ADVISORY LEVELS WEDNESDAY. HIZ001>003-006>009-012-013-017-019-020-025-090400- /O.CON.PHFO.SU.W.0020.000000T0000Z-161109T0400Z/ NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-WAIANAE COAST- OAHU NORTH SHORE-OAHU KOOLAU-OLOMANA-MOLOKAI WINDWARD- MOLOKAI LEEWARD-MAUI WINDWARD WEST-MAUI CENTRAL VALLEY- WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST- 507 AM HST TUE NOV 8 2016 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING... * SURF...25 TO 35 FT...ALONG NORTH AND WEST FACING SHORES OF NIIHAU...KAUAI...AND MOLOKAI...AND NORTH FACING SHORES OF OAHU...MAUI AND THE BIG ISLAND EARLY...LOWERING TO 18 TO 25 FT IN THE AFTERNOON. SURF 18 TO 25 FT ALONG WEST FACING SHORES OF OAHU...LOWERING TO 15 TO 20 FT IN THE AFTERNOON. * TIMING...SURF WILL GRADUALLY SUBSIDE THROUGH THE DAY FROM WEST TO EAST...WHILE REMAINING ABOVE WARNING LEVELS. SURF WILL DROP TO ADVISORY LEVELS TONIGHT ALONG THE EXPOSED SHORES AND LIKELY BELOW ADVISORY-LEVELS WEDNESDAY. * IMPACTS...HIGH...EXPECT OCEAN WATER OCCASIONALLY SWEEPING ACROSS PORTIONS OF BEACHES...VERY STRONG BREAKING WAVES AND STRONG LONGSHORE AND RIP CURRENTS. BREAKING WAVES MAY OCCASIONALLY IMPACT HARBORS MAKING NAVIGATING THE HARBOR CHANNEL DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... THESE DANGEROUS CONDITIONS MEAN THAT ONLY HIGHLY EXPERIENCED PERSONS SHOULD ENTER THE WATER. INEXPERIENCED PERSONS SHOULD REMAIN OFF BEACHES AND ADJACENT BEACHFRONT AREAS. LARGE BREAKING SURF...SIGNIFICANT SHOREBREAK...AND DANGEROUS CURRENTS MAKE ENTERING THE WATER VERY HAZARDOUS. ANYONE ENTERING THE WATER COULD FACE SIGNIFICANT INJURY OR DEATH. && $$ HIZ018-090400- /O.CON.PHFO.SU.Y.0049.000000T0000Z-161109T0400Z/ MAUI LEEWARD WEST- 507 AM HST TUE NOV 8 2016 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING... * SURF...10 TO 15 FEET ALONG WEST FACING SHORES OF WEST MAUI. * TIMING...THROUGH TODAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG CURRENTS MAKING SWIMMING DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$
280 WHHW40 PHFO 090141 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 341 PM HST TUE NOV 8 2016 ...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF KAUAI OAHU AND WEST MAUI... .WARNING-LEVEL SURF ASSOCIATED WITH A VERY LARGE NORTH-NORTHWEST SWELL WILL CONTINUE TO SUBSIDE OVERNIGHT. THE SURF SHOULD DROP BELOW ADVISORY LEVELS WEDNESDAY. HIZ003-006-091445- /O.CAN.PHFO.SU.W.0020.000000T0000Z-161109T0400Z/ /O.EXB.PHFO.SU.Y.0049.000000T0000Z-161109T1600Z/ KAUAI LEEWARD-WAIANAE COAST- 341 PM HST TUE NOV 8 2016 ...HIGH SURF ADVISORY IN EFFECT UNTIL 6 AM HST WEDNESDAY FOR WEST FACING SHORES OF KAUAI AND OAHU... ...HIGH SURF WARNING IS CANCELLED FOR WEST FACING SHORES OF KAUAI AND OAHU... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH SURF ADVISORY...WHICH IS IN EFFECT UNTIL 6 AM HST WEDNESDAY. THE HIGH SURF WARNING HAS BEEN CANCELLED. * SURF...10 TO 15 FEET ALONG WEST FACING SHORES OF KAUAI AND OAHU. * TIMING...THROUGH 6 AM WEDNESDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG CURRENTS MAKING SWIMMING DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ HIZ001-002-007>009-012-013-017-019-020-025-091445- /O.EXT.PHFO.SU.W.0020.000000T0000Z-161109T1600Z/ NIIHAU-KAUAI WINDWARD-OAHU NORTH SHORE-OAHU KOOLAU-OLOMANA- MOLOKAI WINDWARD-MOLOKAI LEEWARD-MAUI WINDWARD WEST- MAUI CENTRAL VALLEY-WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST- 341 PM HST TUE NOV 8 2016 ...HIGH SURF WARNING NOW IN EFFECT UNTIL 6 AM HST WEDNESDAY FOR NORTH FACING SHORES... * SURF...18 TO 25 FT...ALONG NORTH FACING SHORES OF NIIHAU...KAUAI...OAHU...MOLOKAI...MAUI AND THE BIG ISLAND. * TIMING...SURF WILL GRADUALLY SUBSIDE OVERNIGHT...LIKELY DROPPING BELOW ADVISORY LEVELS WEDNESDAY. * IMPACTS...HIGH...EXPECT OCEAN WATER OCCASIONALLY SWEEPING ACROSS PORTIONS OF BEACHES...VERY STRONG BREAKING WAVES AND STRONG LONGSHORE AND RIP CURRENTS. BREAKING WAVES MAY OCCASIONALLY IMPACT HARBORS MAKING NAVIGATING THE HARBOR CHANNEL DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... THESE DANGEROUS CONDITIONS MEAN THAT ONLY HIGHLY EXPERIENCED PERSONS SHOULD ENTER THE WATER. INEXPERIENCED PERSONS SHOULD REMAIN OFF BEACHES AND ADJACENT BEACHFRONT AREAS. LARGE BREAKING SURF...SIGNIFICANT SHOREBREAK...AND DANGEROUS CURRENTS MAKE ENTERING THE WATER VERY HAZARDOUS. ANYONE ENTERING THE WATER COULD FACE SIGNIFICANT INJURY OR DEATH. && $$ HIZ018-091445- /O.EXT.PHFO.SU.Y.0049.000000T0000Z-161109T1600Z/ MAUI LEEWARD WEST- 341 PM HST TUE NOV 8 2016 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 AM HST WEDNESDAY... * SURF...10 TO 15 FEET ALONG WEST FACING SHORES OF WEST MAUI. * TIMING...THROUGH 6 AM WEDNESDAY. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG CURRENTS MAKING SWIMMING DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$
706 WHHW40 PHFO 091331 CFWHFO COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 331 AM HST WED NOV 9 2016 ...HIGH SURF ADVISORY FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI AND OAHU AND FOR NORTH FACING SHORES OF MOLOKAI MAUI AND THE BIG ISLAND... .A NORTH-NORTHWEST SWELL WILL CONTINUE TO PRODUCE ELEVATED SURF ALONG MOST NORTH AND SOME WEST FACING SHORES TODAY. HIZ001-002-007>009-012-013-017-019-020-025-100245- /O.CAN.PHFO.SU.W.0020.000000T0000Z-161109T1600Z/ /O.EXB.PHFO.SU.Y.0049.000000T0000Z-161110T0400Z/ NIIHAU-KAUAI WINDWARD-OAHU NORTH SHORE-OAHU KOOLAU-OLOMANA- MOLOKAI WINDWARD-MOLOKAI LEEWARD-MAUI WINDWARD WEST- MAUI CENTRAL VALLEY-WINDWARD HALEAKALA-BIG ISLAND NORTH AND EAST- 331 AM HST WED NOV 9 2016 ...HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM HST THIS EVENING... ...HIGH SURF WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH SURF ADVISORY...WHICH IS IN EFFECT UNTIL 6 PM HST THIS EVENING. * SURF...14 TO 18 FEET ALONG NORTH FACING SHORES OF NIIHAU... KAUAI...OAHU...MOLOKAI...MAUI AND THE BIG ISLAND. * TIMING...THROUGH THIS AFTERNOON. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ HIZ018-091445- /O.CAN.PHFO.SU.Y.0049.000000T0000Z-161109T1600Z/ MAUI LEEWARD WEST- 331 AM HST WED NOV 9 2016 ...HIGH SURF ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS CANCELLED THE HIGH SURF ADVISORY. SURF HEIGHTS HAS DROPPED OVERNIGHT...AND THE HIGH SURF ADVISORY IS CANCELLED FOR WEST FACING SHORES OF MAUI. $$ HIZ003-006-100245- /O.EXT.PHFO.SU.Y.0049.000000T0000Z-161110T0400Z/ KAUAI LEEWARD-WAIANAE COAST- 331 AM HST WED NOV 9 2016 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 PM HST THIS EVENING... * SURF...8 TO 12 FEET ALONG WEST FACING SHORES OF KAUAI AND OAHU. * TIMING...THROUGH THIS AFTERNOON. * IMPACTS...MODERATE...EXPECT STRONG BREAKING WAVES AND STRONG CURRENTS MAKING SWIMMING DIFFICULT AND DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEED ALL ADVICE GIVEN BY OCEAN SAFETY OFFICIALS AND EXERCISE CAUTION. && $$ HOUSTON
What forecasters said that day
The local office's own words before this high surf warning 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 warning went out at Nov 6, 9:41 AM HST, 5 hours 44 minutes earlier.
Area forecast discussion, Nov 6, 9:41 AM HST, 5 hours 44 minutes before
Area Forecast Discussion National Weather Service Honolulu HI 941 AM HST Sun Nov 6 2016 .SYNOPSIS... A remnant front will bring a band of clouds and showers across the smaller islands on Monday before dissipating near the Big Island on Tuesday. A surface ridge setting up closer to the state will lead to a light wind pattern by the middle of the week, which will continue into next weekend. && .DISCUSSION... Water vapor imagery shows a mid and upper level ridge just north of the state, extending from a high far to the west-northwest. At the surface, a cold front is located several hundred miles north- northwest of the state. A front dissipated closer to the state, leaving behind a cloud band over the northern offshore waters. 12z soundings show inversions around 5kft and precipitable waters around 1.0 inches, which is about one standard deviation below normal for this time of year. MIMIC total precipitable water imagery from this morning shows similar values across the area, with pockets of drier air mixed in as well. A band of slightly higher values near 1.25 inches is located over the northern offshore waters, with values over 1.5 inches pooled along the front farther to the north-northwest. A narrow band of low clouds extends northeast from Oahu, with a couple other bands offshore to the northeast of Maui and southeast of the Big Island. Rainfall was limited overnight, with only a handful of gages on Oahu and the Big Island picking up a couple hundredths over the past 12 hours. The pressure gradient across the state is weak, with a col just to the north and a surface ridge farther to the northeast. Land breezes developed at many locations overnight, and we will see some localized sea breezes today. High-resolution models show an increasing north-northeast wind potentially affecting us late this afternoon, which may focus afternoon clouds across leeward and southern sections of the islands. The increasing north-northeast winds late this afternoon/tonight precede the main cold front. Patchy moisture left behind by the dissipated front over the northern offshore waters may bring some showers tonight, but the main moisture associated with the front should reach Kauai early Monday morning. Recent models have been trending slightly slower bringing the front down the island chain, now stalling it near Maui/Big Island later Monday night. The atmosphere remains capped by an inversion, though forecast soundings/cross sections show inversion heights/moisture depth increasing by a few thousand feet. While deeper convection is not anticipated, low-levels become more saturated and we will see an increase in shower coverage and overall rainfall chances. As the front dissipates near Maui/Big Island on Tuesday, it will leave a cloud band that may linger into early Wednesday. High pressure building in behind the front, which helped to drive it southward, is expected to stall and weaken as well, leaving a surface ridge over the northern offshore waters. This ridge is expected to shift southward across the state during the middle of the week as another front approaches from the northwest. This will lead to a dry convective pattern, with onshore sea breezes and offshore land breezes but little in the way of rainfall due to the dry and stable conditions. There are still differences in the extended, although the GFS and ECMWF have both been trending farther north with the next front Thursday/Friday. While specifics are hard to pin down, there is better agreement that we will see a continued break from trade winds through the weekend and a potential transition to a more showery pattern. && .AVIATION... Light ENE trade winds today will back to the NNE by tonight, with strengthening NE winds expected Monday as high pressure builds to the NW of the area. While VFR conditions will prevail into tonight, the light winds will deliver a few clouds to windward slopes and coasts, with ISOL MVFR VIS/CIG in -SHRA expected. No AIRMETs are in effect, and none are expected into tonight. The building high will push a weakening and relatively shallow frontal boundary over the islands from the N beginning early Monday, leading to an increase in showery low clouds over N through E facing slopes and coasts, and potentially warranting an AIRMET for mountain obscuration. Increasing low-level NE winds on Monday will likely warrant the issuance of AIRMET TANGO for moderate turbulence S through W of island terrain. && .MARINE... The current NNW swell will gradually diminish through tonight. A very large NNW swell arriving Monday is expected to produce warning level surf along the north and west facing shores of most islands for Monday and Tuesday. This swell will gradually subside from late Tuesday into Wednesday before a large NNW swell arrives late Wednesday night and continues into Friday. Trade wind speeds weakened overnight, and there are no Small Craft Advisories (SCA) currently in effect. A SCA will be necessary for most waters Monday as seas increase due to the NNW swell and strengthening northeasterly trade winds associated with a frontal band. The large NNW swell will impact harbors exposed to northwest and north swells with the potential for harbor surges and large breaking waves at harbor entrances. && .HFO WATCHES/WARNINGS/ADVISORIES... None. && Discussion...Bravender Aviation...Birchard Marine...Morrison
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 6, 3:27 PM HST | Small Craft Advisory | HFO | 72 hr | |
| Nov 7, 3:47 AM HST | High Surf Advisory | HFO | Honolulu, Kauai, Kalawao | 5 days |
Nearby
High Surf Warnings in Hawaii, 2016Every high surf warning in 2016
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.