Alert archive / Hawaii / High Surf Advisories in 2021
High Surf Advisory 13, NWS Honolulu, HI
NWS Honolulu, HI issued this high surf advisory at Feb 22, 2021, 3:55 AM HST for Honolulu County, Kalawao County, Hawaii. It was in force for 9 days.
The area
The counties it named.
The facts
- Issued
- Feb 22, 2021, 3:55 AM HST (13:55 UTC)
- Expired
- Mar 3, 2021, 3:32 PM HST
- In force
- 9 days
- Issued by
- NWS Honolulu, HI
Counties Honolulu County, HI, Kalawao County, HI
The radar
The Molokai radar (PHMO), 36 km from the middle of the area, began a volume at 13:57 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 12:00Z, 1.9 hours before the alert went out and 209 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
- 83 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 774 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -46 m²/s²
- 0-3 km storm-relative helicity
- 4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
453 WHHW40 PHFO 221403 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 400 AM HST Mon Feb 22 2021 ...HIGH SURF ADVISORY FOR THE EAST FACING SHORES OF KAUAI...OAHU...MOLOKAI...AND THE BIG ISLAND... .Strong, persistent trade winds will build large wind-driven easterly seas with a long upstream easterly fetch region pushing in an east swell. The combination of these east wind waves and swells will translate to advisory level east-facing shoreline surf over the next several days. HIZ002-008-009-012-017-020-024-025-230300- /O.NEW.PHFO.SU.Y.0012.210222T1355Z-210227T1600Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 355 AM HST Mon Feb 22 2021 ...HIGH SURF ADVISORY IN EFFECT UNTIL 6 AM HST SATURDAY... * WHAT...Large breaking waves from 7 to 10 feet. * WHERE...Kauai, Oahu, Molokai, Maui, and the Big Island. * WHEN...Until 6 AM HST Saturday. * 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. && $$
20 follow-up statements
676 WHHW40 PHFO 230137 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 337 PM HST Mon Feb 22 2021 ...HIGH SURF ADVISORY FOR THE EAST FACING SHORES OF KAUAI... OAHU...MOLOKAI...MAUI...AND THE BIG ISLAND... .Strong, persistent trade winds will generate an east swell which, when combined with local wind waves, will produce advisory-level surf along exposed shoreslines. HIZ002-008-009-012-017-020-024-025-231445- /O.CAN.PHFO.SU.Y.0011.000000T0000Z-210227T1600Z/ /O.CAN.PHFO.SU.Y.0012.000000T0000Z-210227T1600Z/ /O.CON.PHFO.SU.Y.0013.000000T0000Z-210227T1600Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 337 PM HST Mon Feb 22 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST SATURDAY... * WHAT...Large breaking waves from 7 to 10 feet. * WHERE...East-facing shores of Kauai, Oahu, Molokai, Maui, and Big Island. * WHEN...Until 6 AM HST Saturday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. && $$
931 WHHW40 PHFO 231335 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 335 AM HST Tue Feb 23 2021 ...HIGH SURF ADVISORY FOR THE EAST FACING SHORES OF KAUAI... OAHU...MOLOKAI...MAUI...AND THE BIG ISLAND... .Strong, persistent trade winds will generate an east swell which, when combined with heightened wind waves, will produce advisory level surf along eastern exposed shorelines. HIZ002-008-009-012-017-020-024-025-240245- /O.CON.PHFO.SU.Y.0013.000000T0000Z-210227T1600Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 335 AM HST Tue Feb 23 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST SATURDAY... * WHAT...Large breaking waves from 7 to 10 feet along east facing shorelines. * WHERE...The east facing shores of Kauai, Oahu, Molokai, Maui, and the Big Island. * WHEN...Until 6 AM HST Saturday. * 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. && $$
038 WHHW40 PHFO 231340 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 340 AM HST Tue Feb 23 2021 ...HIGH SURF ADVISORY FOR THE EAST FACING SHORES OF KAUAI... OAHU...MOLOKAI...MAUI...AND THE BIG ISLAND... .Strong, persistent trade winds will generate an east swell that, when combined with heightened wind waves, will produce advisory level surf along eastern exposed shorelines. HIZ002-008-009-012-017-020-024-025-240245- /O.CON.PHFO.SU.Y.0013.000000T0000Z-210227T1600Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 340 AM HST Tue Feb 23 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST SATURDAY... * WHAT...Large breaking waves from 7 to 12 feet along east facing shorelines. * WHERE...The east facing shores of Kauai, Oahu, Molokai, Maui, and the Big Island. * WHEN...Until 6 AM HST Saturday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. Boaters should expect recreational surfers and body boarders utilizing harbor channels to access surfing areas. && $$
016 WHHW40 PHFO 240132 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 332 PM HST Tue Feb 23 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong, persistent trade winds will generate an east swell that, when combined with heightened wind waves, will produce advisory level surf along exposed east facing shorelines. HIZ002-008-009-012-017-020-024-025-241445- /O.CON.PHFO.SU.Y.0013.000000T0000Z-210227T1600Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 332 PM HST Tue Feb 23 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST SATURDAY... * WHAT...Surf of 7 to 12 feet along east facing shorelines. * WHERE...East facing shores of Kauai, Oahu, Molokai, Maui, and the Big Island. * WHEN...Until 6 AM HST Saturday. * 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. && $$
967 WHHW40 PHFO 241334 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 334 AM HST Wed Feb 24 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong trade winds will continue to produce advisory level surf along east facing shores through at least early Monday morning. HIZ002-008-009-012-017-020-024-025-250245- /O.EXT.PHFO.SU.Y.0013.000000T0000Z-210301T1600Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 334 AM HST Wed Feb 24 2021 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 8 to 12 feet along east facing shorelines. * WHERE...East facing shores of Kauai, Oahu, Molokai, Maui, and the Big Island. * WHEN...Until 6 AM HST Monday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. && $$
349 WHHW40 PHFO 250336 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 536 PM HST Wed Feb 24 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong trade winds will continue to produce advisory level surf along east facing shores through at least early Monday morning. HIZ002-008-009-012-017-020-024-025-251645- /O.CON.PHFO.SU.Y.0013.000000T0000Z-210301T1600Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 536 PM HST Wed Feb 24 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 7 to 12 feet along east facing shorelines. * WHERE...East facing shores of Kauai, Oahu, Molokai, Maui, and the Big Island. * WHEN...Until 6 AM HST Monday. * 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. && $$
365 WHHW40 PHFO 251335 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 335 AM HST Thu Feb 25 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong trade winds will continue to produce advisory level surf along east facing shores through at least early Monday morning. HIZ002-008-009-012-017-020-024-025-260245- /O.CON.PHFO.SU.Y.0013.000000T0000Z-210301T1600Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 335 AM HST Thu Feb 25 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 7 to 12 feet along east facing shorelines. * WHERE...East facing shores of Kauai, Oahu, Molokai, Maui, and the Big Island. * WHEN...Until 6 AM HST Monday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. && $$
417 WHHW40 PHFO 260111 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 311 PM HST Thu Feb 25 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong trade winds will produce rough and choppy surf along east facing shores through the weekend. HIZ002-008-009-012-017-020-024-025-261415- /O.CON.PHFO.SU.Y.0013.000000T0000Z-210301T1600Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 311 PM HST Thu Feb 25 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf 9 to 13 feet along east facing shores. * WHERE...East facing shores of Kauai, Oahu, Molokai, Maui, and the Big Island. * WHEN...Until 6 AM HST Monday. * 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. Know your limits and seek ocean recreation areas best suited for your abilities. When in doubt, don't go out. && $$ Birchard
092 WHHW40 PHFO 261302 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 302 AM HST Fri Feb 26 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong trade winds will produce high surf along east facing shores through the weekend. HIZ002-008-009-012-017-020-024-025-270230- /O.CON.PHFO.SU.Y.0013.000000T0000Z-210301T1600Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 302 AM HST Fri Feb 26 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM MONDAY... * WHAT...Surf 9 to 13 feet along east facing shores. * WHERE...East facing shores of Kauai, Oahu, Molokai, Maui, and the Big Island. * WHEN...Until 6 AM Monday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong currents making swimming dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Heed all advice from ocean safety officials and exercise caution. Know your limits and seek ocean recreation areas best suited for your abilities. When in doubt, don't go out. && $$
481 WHHW40 PHFO 270120 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 320 PM HST Fri Feb 26 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong trade winds will produce high surf along eastern facing shores through the weekend. HIZ002-008-009-012-017-020-024-025-271430- /O.CON.PHFO.SU.Y.0013.000000T0000Z-210301T1600Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 320 PM HST Fri Feb 26 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf 9 to 13 feet along east facing shores. * WHERE...East facing shores of Kauai, Oahu, Molokai, Maui and the Big Island. * WHEN...Until 6 AM Monday. * 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. && $$
720 WHHW40 PHFO 271332 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 332 AM HST Sat Feb 27 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong trade winds will produce high surf along eastern facing shores through the weekend. HIZ002-008-009-012-017-020-024-025-280245- /O.CON.PHFO.SU.Y.0013.000000T0000Z-210301T1600Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 332 AM HST Sat Feb 27 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf 8 to 12 feet along east facing shores. * WHERE...East facing shores of Kauai, Oahu, Molokai, Maui and the Big Island. * WHEN...Until 6 AM Monday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. && $$
265 WHHW40 PHFO 280158 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 358 PM HST Sat Feb 27 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong trade winds will produce high surf along eastern facing shores. HIZ002-008-009-012-017-020-024-025-281500- /O.EXT.PHFO.SU.Y.0013.000000T0000Z-210303T0400Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 358 PM HST Sat Feb 27 2021 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 PM HST TUESDAY... * WHAT...Surf 8 to 13 feet along east facing shores. * WHERE...East facing shores of Kauai, Oahu, Molokai, Maui and the Big Island. * WHEN...Until 6 PM HST Tuesday. * 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. && $$
932 WHHW40 PHFO 281315 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 315 AM HST Sun Feb 28 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong trade winds will produce high surf along eastern facing shores. HIZ002-008-009-012-017-020-024-025-010215- /O.CON.PHFO.SU.Y.0013.000000T0000Z-210303T0400Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 315 AM HST Sun Feb 28 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST TUESDAY... * WHAT...Surf of 8 to 13 feet. * WHERE...East facing shores of Kauai, Oahu, Molokai, Maui, and Big Island. * WHEN...Until 6 PM HST Tuesday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. Boaters should expect recreational surfers and body boarders utilizing harbor channels to access surfing areas. && $$ M Ballard
578 WHHW40 PHFO 010124 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 324 PM HST Sun Feb 28 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong trade winds will produce large rough surf along eastern facing shores for the next couple of days. East shore surf will decline on Wednesday but will remain elevated. HIZ002-008-009-012-017-020-024-025-011430- /O.CON.PHFO.SU.Y.0013.000000T0000Z-210303T0400Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 324 PM HST Sun Feb 28 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST TUESDAY... * WHAT...Surf of 8 to 13 feet. * WHERE...East facing shores of Kauai, Oahu, Molokai, Maui, and Big Island. * WHEN...Until 6 PM HST Tuesday. * 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. Boaters should expect recreational surfers and body boarders utilizing harbor channels to access surfing areas. && $$
287 WHHW40 PHFO 011300 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 300 AM HST Mon Mar 1 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong trade winds will produce rough, elevated surf along eastern facing shores the next couple of days. HIZ002-008-009-012-017-020-024-025-020200- /O.CON.PHFO.SU.Y.0013.000000T0000Z-210303T0400Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 300 AM HST Mon Mar 1 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST TUESDAY... * WHAT...Surf of 7 to 12 feet along most east facing shores. * WHERE...East facing shorelines of Kauai, Oahu, Molokai, Maui, and the Big Island. * WHEN...Until 6 PM HST Tuesday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. && $$
444 WHHW40 PHFO 020128 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 328 PM HST Mon Mar 1 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong trade winds over and upstream of the islands will produce rough, elevated surf along east facing shores through Tuesday. East shore surf will decline on Wednesday but will remain elevated. HIZ002-008-009-012-017-020-024-025-021430- /O.CON.PHFO.SU.Y.0013.000000T0000Z-210303T0400Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 328 PM HST Mon Mar 1 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST TUESDAY... * WHAT...Surf of 8 to 12 feet along east facing shores. * WHERE...East facing shores of Kauai, Oahu, Molokai, Maui, and the Big Island. * WHEN...Until 6 PM HST Tuesday. * 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. && $$
621 WHHW40 PHFO 021416 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 416 AM HST Tue Mar 2 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong trade winds over and upstream of the islands will continue to produce rough, elevated surf along east facing shorelines. East shore surf will begin to decline Wednesday as trades weaken. HIZ002-008-009-012-017-020-024-025-030330- /O.EXT.PHFO.SU.Y.0013.000000T0000Z-210304T0400Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 416 AM HST Tue Mar 2 2021 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 PM HST WEDNESDAY... * WHAT...8 to 12 foot surf along east facing shores. * WHERE...The east facing shores of Kauai, Oahu, Molokai, Maui and the Big Island. * WHEN...Until 6 PM HST Wednesday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. && $$
917 WHHW40 PHFO 030134 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 334 PM HST Tue Mar 2 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong trade winds over and upstream of the islands will continue to produce rough, elevated surf along east facing shorelines. East shore surf will begin to decline tomorrow as trades weaken. HIZ002-008-009-012-017-020-024-025-031445- /O.CON.PHFO.SU.Y.0013.000000T0000Z-210304T0400Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 334 PM HST Tue Mar 2 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST WEDNESDAY... * WHAT...7 to 10 foot surf along east facing shores. * WHERE...The east facing shores of Kauai, Oahu, Molokai, Maui and the Big Island. * WHEN...Until 6 PM HST Wednesday. * 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. && $$
481 WHHW40 PHFO 031345 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 345 AM HST Wed Mar 3 2021 ...HIGH SURF ADVISORY FOR EAST FACING SHORES OF KAUAI OAHU MOLOKAI MAUI AND THE BIG ISLAND... .Strong trade winds over and upstream of the islands will continue to produce rough, elevated surf along east facing shorelines. East shore surf will decline this evening as trades weaken. HIZ002-008-009-012-017-020-024-025-040245- /O.CON.PHFO.SU.Y.0013.000000T0000Z-210304T0400Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 345 AM HST Wed Mar 3 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING... * WHAT...7 to 10 foot surf along east facing shores. * WHERE...The east facing shores of Kauai, Oahu, Molokai, Maui and the Big Island. * WHEN...Until 6 PM HST Wednesday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. && $$
284 WHHW40 PHFO 040132 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 332 PM HST Wed Mar 3 2021 ...HIGH SURF ADVISORY CANCELLED... .Strong trade winds both upstream and locally have eased resulting in subsiding swell and surf along eastern facing shores. HIZ002-008-009-012-017-020-024-025-040245- /O.CAN.PHFO.SU.Y.0013.000000T0000Z-210304T0400Z/ Kauai Windward-Oahu Koolau-Olomana-Molokai Windward- Maui Windward West-Windward Haleakala-South Big Island- Big Island North and East- 332 PM HST Wed Mar 3 2021 ...HIGH SURF ADVISORY IS CANCELLED... Surf along east facing shores has fallen below advisory level. $$
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 22, 3:55 AM HST | High Surf Advisory | HFO | Honolulu, Kalawao | 12 hr |
| Feb 22, 3:55 AM HST | High Surf Advisory | HFO | Honolulu, Kalawao | 12 hr |
| Feb 22, 9:12 AM HST | Gale Watch | HFO | 42 hr |
Nearby
High Surf Advisories in Hawaii, 2021Every high surf advisory in 2021
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.