Alert archive / Hawaii / High Surf Warnings in 2021
High Surf Warning 7, NWS Honolulu, HI
NWS Honolulu, HI issued this high surf warning at Dec 3, 2021, 9:08 AM HST for 4 counties in Hawaii. It was in force for 66 hr. 4 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Dec 3, 2021, 9:08 AM HST (19:08 UTC)
- Expired
- Dec 6, 2021, 3:37 AM HST
- In force
- 66 hr
- 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 19:08 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 5, 2:00 PM HST | HEAVY RAIN 0 | 3 N Pahala, HI | BIG ISLAND CIVIL DEFENSE REPORTED CLOSURE OF WOOD VALLEY ROAD DUE TO INUNDATION AT A LOW WATER CROSSING. |
| Dec 5, 2:06 PM HST | NON-TSTM WND GST 0 | Volcano, HI | HAWAII CIVIL DEFENSE REPORTS WIDESPREAD STRONG WIND GUSTS CAUSING POWER OUTAGES FROM VOLCANO TO LOWER PUNA WITH THE GREATEST IMPACTS IN LOWER PUNA. |
| Dec 5, 2:20 PM HST | NON-TSTM WND GST 0 | 1 Nne Volcano, HI | STRONG WINDS ACCOMPANIED BY VERY RAIN. LARGE FALLEN TREE LIMB ON NEARBY VEHICLES. |
| Dec 5, 6:30 PM HST | NON-TSTM WND DMG | 1 E Keauhou, HI | ROUTE 180 BETWEEN BISHOP STREET AND HAAWINA STREET CLOSED DUE TO FALLEN TREES. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lihue, (PHLI), launched 12:00Z, 7.1 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
- 124 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 874 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
120 WHHW40 PHFO 031908 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 908 AM HST Fri Dec 3 2021 ...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND MAUI... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU AND MOLOKAI... .A very large north-northwest swell will fill in today, then quickly build tonight and Saturday. Surf will increase slowly today, then quickly ramp up tonight and Saturday. The swell will gradually shift more out of the north beginning Saturday night, then slowly lower through the first part of next week. HIZ001-007-009-017-029-035-037-039-045-047-040815- /O.NEW.PHFO.SU.W.0007.211203T1908Z-211206T1600Z/ Niihau-Oahu North Shore-Olomana-Maui Windward West-Kauai North- Koolau Windward-Molokai Windward-Molokai North- Maui Central Valley North-Windward Haleakala- 908 AM HST Fri Dec 3 2021 ...HIGH SURF WARNING IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT....Surf heights building to 20 to 30 feet by Saturday morning. * WHERE...Along north facing shores of Niihau, Kauai, Oahu, Molokai, and Maui. * WHEN...Until 6 AM HST Monday. * 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... Large, breaking surf, significant shorebreak, and dangerous currents make entering the water very hazardous. Anyone entering the water could face significant injury or death. && $$ HIZ003-006-040-040815- /O.NEW.PHFO.SU.Y.0031.211203T1908Z-211206T1600Z/ Kauai Southwest-Waianae Coast-Molokai West- 908 AM HST Fri Dec 3 2021 ...HIGH SURF ADVISORY IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf heights building to 14 to 18 feet by Saturday morning. * WHERE...Along west facing shores of Niihau, Kauai, Oahu, and Molokai. * WHEN...Until 6 AM HST Monday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. && $$
10 follow-up statements
801 WHHW40 PHFO 040139 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 339 PM HST Fri Dec 3 2021 ...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND MAUI... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU AND MOLOKAI... .A very large north-northwest swell will fill in this evening, then quickly build tonight and Saturday. Surf will increase slowly today, then quickly ramp up tonight and Saturday. The swell will gradually shift more out of the north beginning Saturday night, then slowly lower through the first part of next week. HIZ001-007-009-017-029-035-037-039-045-047-041445- /O.CON.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/ Niihau-Oahu North Shore-Olomana-Maui Windward West-Kauai North- Koolau Windward-Molokai Windward-Molokai North- Maui Central Valley North-Windward Haleakala- 339 PM HST Fri Dec 3 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf heights building to 20 to 30 feet Saturday. * WHERE...Along north facing shores of Niihau, Kauai, Oahu, Molokai, and Maui. * WHEN...Until 6 AM HST Monday. * 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... Large, breaking surf, significant shorebreak, and dangerous currents make entering the water very hazardous. Anyone entering the water could face significant injury or death. && $$ HIZ003-006-040-041445- /O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/ Kauai Southwest-Waianae Coast-Molokai West- 339 PM HST Fri Dec 3 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf heights building to 14 to 18 feet Saturday. * WHERE...Along west facing shores of Niihau, Kauai, Oahu, and Molokai. * WHEN...Until 6 AM HST Monday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. && $$
242 WHHW40 PHFO 041345 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 345 AM HST Sat Dec 4 2021 ...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND MAUI... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU AND MOLOKAI... .A very large north-northwest swell will fill in this evening, then quickly build tonight and Saturday. Surf will increase slowly today, then quickly ramp up tonight and Saturday. The swell will gradually shift more out of the north beginning Saturday night, then slowly lower through the first part of next week. HIZ001-007-009-017-029-035-037-039-045-047-050245- /O.CON.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/ Niihau-Oahu North Shore-Olomana-Maui Windward West-Kauai North- Koolau Windward-Molokai Windward-Molokai North- Maui Central Valley North-Windward Haleakala- 345 AM HST Sat Dec 4 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf heights building to 25 to 35 feet today. * WHERE...Along north facing shores of Niihau, Kauai, Oahu, Molokai, and Maui. * WHEN...Until 6 AM HST Monday. * 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... Large, breaking surf, significant shorebreak, and dangerous currents make entering the water very hazardous. Anyone entering the water could face significant injury or death. && $$ HIZ053-054-050245- /O.EXB.PHFO.SU.Y.0031.211204T2200Z-211206T1600Z/ Big Island East-Big Island North- 345 AM HST Sat Dec 4 2021 ...HIGH SURF ADVISORY IN EFFECT FROM NOON TODAY TO 6 AM HST MONDAY... * WHAT...Surf heights building to 10 to 15 feet today. * WHERE...Along north facing shores of the Big Island. * WHEN...From noon today to 6 AM HST Monday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. && $$ HIZ003-006-040-050245- /O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/ Kauai Southwest-Waianae Coast-Molokai West- 345 AM HST Sat Dec 4 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf heights building to 14 to 18 feet today. * WHERE...Along west facing shores of Niihau, Kauai, Oahu, and Molokai. * 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. && $$
490 WHHW40 PHFO 041417 CCA CFWHFO Coastal Hazard Message...CORRECTED National Weather Service Honolulu HI 417 AM HST Sat Dec 4 2021 ...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND MAUI... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU AND MOLOKAI... ...HIGH SURF ADVISORY FOR NORTH FACING SHORES OF THE BIG ISLAND... .A large north-northwest swell will quickly ramp up today, then shift more out of the north. As the swell becomes more northerly tonight and Sunday, high surf will also affect north facing shores of the Big Island. HIZ001-007-009-017-029-035-037-039-045-047-050245- /O.CON.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/ Niihau-Oahu North Shore-Olomana-Maui Windward West-Kauai North- Koolau Windward-Molokai Windward-Molokai North- Maui Central Valley North-Windward Haleakala- 417 AM HST Sat Dec 4 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf heights building to 25 to 35 feet today. * WHERE...Along north facing shores of Niihau, Kauai, Oahu, Molokai, and Maui. * WHEN...Until 6 AM HST Monday. * IMPACTS...High. Expect ocean water occasionally sweeping across portions of beaches, very strong breaking waves, and strong longshore and rip currents. Breaking waves may occasionally impact harbors making navigating the harbor channel dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Large, breaking surf, significant shorebreak, and dangerous currents make entering the water very hazardous. Anyone entering the water could face significant injury or death. && $$ HIZ053-054-050245- /O.EXB.PHFO.SU.Y.0031.211204T2200Z-211206T1600Z/ Big Island East-Big Island North- 417 AM HST Sat Dec 4 2021 ...HIGH SURF ADVISORY IN EFFECT FROM NOON TODAY TO 6 AM HST MONDAY... * WHAT...Surf heights building to 10 to 15 feet today. * WHERE...Along north facing shores of the Big Island. * WHEN...From noon today to 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. && $$ HIZ003-006-040-050245- /O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/ Kauai Southwest-Waianae Coast-Molokai West- 417 AM HST Sat Dec 4 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf heights building to 14 to 18 feet today. * WHERE...Along west facing shores of Niihau, Kauai, Oahu, and Molokai. * WHEN...Until 6 AM HST Monday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. && $$
000 WHHW40 PHFO 050137 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 337 PM HST Sat Dec 4 2021 ...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI MAUI AND BIG ISLAND... ...HIGH SURF WARNING FOR WEST FACING SHORES OF THE BIG ISLAND... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND MAUI... .A large north-northwest swell will quickly ramp up tonight, then shift more out of the north. As the swell becomes more northerly tonight and Sunday, high surf will also affect north and west facing shores of the Big Island and Maui. HIZ053-054-051445- /O.UPG.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/ /O.EXA.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/ Big Island East-Big Island North- 337 PM HST Sat Dec 4 2021 ...HIGH SURF WARNING IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 10 to 15 feet, building to 20 to 30 feet Sunday. * WHERE... North facing shores of 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... Large, breaking surf, significant shorebreak, and dangerous currents make entering the water very hazardous. Anyone entering the water could face significant injury or death. Boaters should be aware of an increased number of surfers and body boarders utilizing the harbor channel to access surfing areas. && $$ HIZ026-051445- /O.EXA.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/ Kohala- 337 PM HST Sat Dec 4 2021 ...HIGH SURF WARNING IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf heights building to 8 to 12 feet Sunday along west facing shores. * WHERE... North Kona District around Kua Bay on the Big Island. * WHEN...Until 6 AM HST Monday. * IMPACTS...High. Expect ocean water occasionally sweeping across portions of beaches, very strong breaking waves, and strong longshore and rip currents. Breaking waves may occasionally impact harbors making navigating the harbor channel dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Large, breaking surf, significant shorebreak, and dangerous currents make entering the water very hazardous. Anyone entering the water could face significant injury or death. Boaters should be aware of an increased number of surfers and body boarders utilizing the harbor channel to access surfing areas. && $$ HIZ001-007-009-017-029-035-037-039-045-047-051445- /O.CON.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/ Niihau-Oahu North Shore-Olomana-Maui Windward West-Kauai North- Koolau Windward-Molokai Windward-Molokai North- Maui Central Valley North-Windward Haleakala- 337 PM HST Sat Dec 4 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 25 to 35 feet along north facing shores. * WHERE...Niihau, Kauai, Oahu, Molokai, and Maui. * WHEN...Until 6 AM HST Monday. * 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... Large, breaking surf, significant shorebreak, and dangerous currents make entering the water very hazardous. Anyone entering the water could face significant injury or death. Boaters should be aware of an increased number of surfers and body boarders utilizing the harbor channel to access surfing areas. && $$ HIZ018-051445- /O.EXA.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/ Maui Leeward West- 337 PM HST Sat Dec 4 2021 ...HIGH SURF ADVISORY IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf heights building to 10 to 14 feet along west facing shores Sunday. * WHERE...Maui Leeward West near Honolua Bay. * WHEN...Until 6 AM HST Monday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. && $$ HIZ003-006-040-051445- /O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/ Kauai Southwest-Waianae Coast-Molokai West- 337 PM HST Sat Dec 4 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 14 to 18 feet along west facing shores. * WHERE...Along west facing shores of Niihau, Kauai, Oahu, and Molokai. * 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. && $$
738 WHHW40 PHFO 051322 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 322 AM HST Sun Dec 5 2021 ...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI MAUI AND BIG ISLAND... ...HIGH SURF WARNING FOR WEST FACING SHORES OF THE BIG ISLAND... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND MAUI... .A large north swell will persist through tonight that will be affecting the north and west facing shores of most islands. HIZ001-007-009-017-026-029-035-037-039-045-047-053-054-060230- /O.CON.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/ Niihau-Oahu North Shore-Olomana-Maui Windward West-Kohala- Kauai North-Koolau Windward-Molokai Windward-Molokai North- Maui Central Valley North-Windward Haleakala-Big Island East- Big Island North- 322 AM HST Sun Dec 5 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 25 to 35 feet along north facing shores. * WHERE...Niihau, Kauai, Oahu, Molokai, and Maui. * WHEN...Until 6 AM HST Monday. * IMPACTS...High. Expect ocean water occasionally sweeping across portions of beaches, very strong breaking waves, and strong longshore and rip currents. Breaking waves may occasionally impact harbors making navigating the harbor channel dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Large, breaking surf, significant shorebreak, and dangerous currents make entering the water very hazardous. Anyone entering the water could face significant injury or death. Boaters should be aware of an increased number of surfers and body boarders utilizing the harbor channel to access surfing areas. && $$ HIZ003-006-018-040-060230- /O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/ Kauai Southwest-Waianae Coast-Maui Leeward West-Molokai West- 322 AM HST Sun Dec 5 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 14 to 18 feet along west facing shores. * WHERE...Along west facing shores of Niihau, Kauai, Oahu, Molokai, and Maui. * 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. && $$
261 WHHW40 PHFO 051355 CCA CFWHFO Coastal Hazard Message...CORRECTED National Weather Service Honolulu HI 355 AM HST Sun Dec 5 2021 ...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI MAUI AND BIG ISLAND... ...HIGH SURF WARNING FOR WEST FACING SHORES OF THE BIG ISLAND... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND MAUI... .A large north swell will persist through tonight that will be affecting the north and west facing shores of most islands. HIZ001-007-009-017-026-029-035-037-039-045-047-053-054-060230- /O.COR.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/ Niihau-Oahu North Shore-Olomana-Maui Windward West-Kohala- Kauai North-Koolau Windward-Molokai Windward-Molokai North- Maui Central Valley North-Windward Haleakala-Big Island East- Big Island North- 355 AM HST Sun Dec 5 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 25 to 35 feet along north facing shores, and 8 to 12 feet along the west facing shore of the Big island. * WHERE...Niihau, Kauai, Oahu, Molokai, Maui, and west facing shores of the Big Island north of Kua Bay. * WHEN...Until 6 AM HST Monday. * IMPACTS...High. Expect ocean water occasionally sweeping across portions of beaches, very strong breaking waves, and strong longshore and rip currents. Breaking waves may occasionally impact harbors making navigating the harbor channel dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Large, breaking surf, significant shorebreak, and dangerous currents make entering the water very hazardous. Anyone entering the water could face significant injury or death. Boaters should be aware of an increased number of surfers and body boarders utilizing the harbor channel to access surfing areas. && $$ HIZ003-006-018-040-060230- /O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/ Kauai Southwest-Waianae Coast-Maui Leeward West-Molokai West- 355 AM HST Sun Dec 5 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 14 to 18 feet along west facing shores. * WHERE...Along west facing shores of Niihau, Kauai, Oahu, Molokai, and Maui. * 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. && $$
464 WHHW40 PHFO 051406 CCB CFWHFO Coastal Hazard Message...CORRECTED National Weather Service Honolulu HI 406 AM HST Sun Dec 5 2021 ...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI MAUI AND BIG ISLAND... ...HIGH SURF WARNING FOR WEST FACING SHORES OF THE BIG ISLAND... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND MAUI... .A large north swell will persist through tonight that will be affecting the north and west facing shores of most islands. HIZ001-007-009-017-026-029-035-037-039-045-047-053-054-060230- /O.COR.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/ Niihau-Oahu North Shore-Olomana-Maui Windward West-Kohala- Kauai North-Koolau Windward-Molokai Windward-Molokai North- Maui Central Valley North-Windward Haleakala-Big Island East- Big Island North- 406 AM HST Sun Dec 5 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 25 to 35 feet along north facing shores of Niihau, Kauai, Molokai Oahu, and Maui, and 20 to 30 feet along the north facing shores of the Big Island. Also, surf of 8 to 12 feet along the west facing shore of the Big island north of Kua Bay. * WHERE...Niihau, Kauai, Oahu, Molokai, Maui, and north and west facing shores of the Big Island. * WHEN...Until 6 AM HST Monday. * IMPACTS...High. Expect ocean water occasionally sweeping across portions of beaches, very strong breaking waves, and strong longshore and rip currents. Breaking waves may occasionally impact harbors making navigating the harbor channel dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Large, breaking surf, significant shorebreak, and dangerous currents make entering the water very hazardous. Anyone entering the water could face significant injury or death. Boaters should be aware of an increased number of surfers and body boarders utilizing the harbor channel to access surfing areas. && $$ HIZ003-006-018-040-060230- /O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/ Kauai Southwest-Waianae Coast-Maui Leeward West-Molokai West- 406 AM HST Sun Dec 5 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 14 to 18 feet along west facing shores. * WHERE...Along west facing shores of Niihau, Kauai, Oahu, Molokai, and Maui. * 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. && $$
775 WHHW40 PHFO 051732 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 732 AM HST Sun Dec 5 2021 ...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI MAUI AND BIG ISLAND... ...HIGH SURF WARNING FOR WEST FACING SHORES OF THE BIG ISLAND... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND MAUI... .A large north swell will peak today then decline tonight and Monday. The large swell combined with high astronomical tides may produce runup along north facing shores this morning. HIZ001-007-009-017-026-029-035-037-039-045-047-053-054-060645- /O.CON.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/ Niihau-Oahu North Shore-Olomana-Maui Windward West-Kohala- Kauai North-Koolau Windward-Molokai Windward-Molokai North- Maui Central Valley North-Windward Haleakala-Big Island East- Big Island North- 732 AM HST Sun Dec 5 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 30 to 40 feet along north facing shores of Kauai and Niihau, 25 to 35 feet along north facing shores of Oahu, Molokai, and Maui, and 20 to 30 feet along the north facing shores of the Big Island. Surf of 8 to 12 feet along the west facing shore of the Big island north of Kua Bay. * WHERE...Niihau, Kauai, Oahu, Molokai, Maui, and north and west facing shores of the Big Island. * WHEN...Until 6 AM HST Monday. * 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. * ADDITIONAL DETAILS...High astronomical tides will combine with the peaking swell to produce runup along north facing shores this morning, leading to areas of coastal erosion and water affecting coastal roads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Large, breaking surf, significant shorebreak, and dangerous currents make entering the water very hazardous. Anyone entering the water could face significant injury or death. Boaters should be aware of an increased number of surfers and body boarders utilizing the harbor channel to access surfing areas. && $$ HIZ003-006-018-040-060645- /O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/ Kauai Southwest-Waianae Coast-Maui Leeward West-Molokai West- 732 AM HST Sun Dec 5 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 14 to 18 feet along west facing shores. * WHERE...Along west facing shores of Niihau, Kauai, Oahu, Molokai, and Maui. * 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. && $$
674 WHHW40 PHFO 060135 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 335 PM HST Sun Dec 5 2021 ...HIGH SURF WARNING FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI MAUI AND BIG ISLAND... ...HIGH SURF WARNING FOR WEST FACING SHORES OF THE BIG ISLAND... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI AND MAUI... ...COASTAL FLOOD STATEMENT IN EFFECT FOR ALL HAWAIIAN ISLANDS... .A large, though declining, north swell will continue to produce large surf overnight. The large swell combined with high astronomical tides may produce elevated runup along north facing shores in the predawn hours. HIZ001-007-009-017-026-029-035-037-039-045-047-053-054-061445- /O.NEW.PHFO.CF.S.0002.211206T1200Z-211206T2000Z/ /O.CON.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/ Niihau-Oahu North Shore-Olomana-Maui Windward West-Kohala- Kauai North-Koolau Windward-Molokai Windward-Molokai North- Maui Central Valley North-Windward Haleakala-Big Island East- Big Island North- 335 PM HST Sun Dec 5 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 20 to 28 feet along north facing shores of Niihau, Kauai, Oahu, Molokai, and Maui, and 15 to 25 feet along the north facing shores of the Big Island. Surf of 8 to 12 feet along the west facing shore of the Big island north of Kua Bay. For the Coastal Flood Statement, isolated minor coastal flooding expected around high tide late tonight and early Monday morning. * WHERE...Portions of Kauai, Maui, Molokai, Niihau, Oahu and the Big Island. * WHEN...For the High Surf Warning, until 6 AM HST Monday. For the Coastal Flood Statement, from 2 AM HST Monday through Monday morning. * IMPACTS...Flooding of beaches that are normally dry, minor coastal erosion, and saltwater inundation. 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... Large, breaking surf, significant shorebreak, and dangerous currents make entering the water very hazardous. Anyone entering the water could face significant injury or death. Boaters should be aware of an increased number of surfers and body boarders utilizing the harbor channel to access surfing areas. && Submit your coastal flooding photos to the University of Hawaii Sea Grant College Program's Hawaii and Pacific Islands King Tides Project at: PacificIslandsKingTides.org $$ HIZ003-006-018-040-061445- /O.NEW.PHFO.CF.S.0002.211206T1200Z-211206T2000Z/ /O.CON.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/ Kauai Southwest-Waianae Coast-Maui Leeward West-Molokai West- 335 PM HST Sun Dec 5 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Surf of 8 to 12 feet along west facing shores. For the Coastal Flood Statement, isolated minor coastal flooding expected around high tide late tonight and early Monday morning. * WHERE...Along west facing shores of Niihau, Kauai, Oahu, Molokai, and Maui. * WHEN...For the High Surf Advisory, until 6 AM HST Monday. For the Coastal Flood Statement, from 2 AM HST Monday through Monday morning. * IMPACTS...Flooding of beaches that are normally dry, minor coastal erosion, and saltwater inundation. 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. && Submit your coastal flooding photos to the University of Hawaii Sea Grant College Program's Hawaii and Pacific Islands King Tides Project at: PacificIslandsKingTides.org $$ HIZ016-023-030>034-038-041>044-046-048>052-061445- /O.NEW.PHFO.CF.S.0002.211206T1200Z-211206T2000Z/ Kahoolawe-Kona-Kauai East-Kauai South-East Honolulu- Honolulu Metro-Ewa Plain-Molokai Southeast-Molokai Leeward South- Lanai Windward-Lanai Leeward-Lanai South- Maui Central Valley South-Kipahulu-South Maui/Upcountry- South Haleakala-Big Island South-Big Island Southeast- 335 PM HST Sun Dec 5 2021 * WHAT...Isolated minor coastal flooding expected around high tide late tonight and early Monday morning. * WHERE...Portions of Kahoolawe, Kauai, Lanai, Maui, Molokai, Oahu and the Big Island Hawaii. * WHEN...From 2 AM HST Monday through Monday morning. * IMPACTS...Flooding of beaches that are normally dry, minor coastal erosion, and saltwater inundation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid driving through flooded roadways. If you are forced to drive through salt water, be sure to rinse your vehicle with fresh water. Move electronics, vehicles or other valuables to higher ground. Monitor vessels to ensure mooring lines don't get too tight and watchout for overwash around boat ramps. Secure canoes or other watercraft stowed on beaches. && Submit your coastal flooding photos to the University of Hawaii Sea Grant College Program's Hawaii and Pacific Islands King Tides Project at: PacificIslandsKingTides.org $$ Wroe
913 WHHW40 PHFO 061337 CFWHFO Coastal Hazard Message National Weather Service Honolulu HI 337 AM HST Mon Dec 6 2021 ...HIGH SURF ADVISORY FOR NORTH FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI MAUI AND BIG ISLAND... ...COASTAL FLOOD STATEMENT IN EFFECT FOR ALL HAWAIIAN ISLANDS... .A recently large, though declining, north swell will continue to produce large surf. The large swell combined with high astronomical tides may produce elevated runup along north facing shores through the day. Strong southerly winds within and near recently strong convergent overnight rain bands developing far east of a kona low northwest of Kauai have produced periods of rough, short period chop that will be impacting south facing shores today. During times of morning high tides, there is the potential for the nuisance flooding of low lying areas and local area roadways. HIZ001-007-009-017-026-029-035-037-039-045-047-053-054-070245- /O.CAN.PHFO.SU.W.0007.000000T0000Z-211206T1600Z/ /O.NEW.PHFO.SU.Y.0032.211206T1337Z-211207T0400Z/ /O.EXT.PHFO.CF.S.0002.000000T0000Z-211207T0000Z/ Niihau-Oahu North Shore-Olomana-Maui Windward West-Kohala- Kauai North-Koolau Windward-Molokai Windward-Molokai North- Maui Central Valley North-Windward Haleakala-Big Island East- Big Island North- 337 AM HST Mon Dec 6 2021 ...HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM HST THIS EVENING... ...HIGH SURF WARNING IS CANCELLED... * WHAT...Large breaking waves of 15 to 20 feet. Isolated minor coastal flooding during high tide times. * WHERE...North facing shore of Kauai, Maui, Molokai, Niihau, Oahu and Big Island. * WHEN...For the High Surf Advisory, until 6 PM HST this evening. For the Coastal Flood Statement, until 2 PM HST this afternoon. * IMPACTS...Flooding of beaches that are normally dry, minor coastal erosion, and saltwater inundation. Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid driving through flooded roadways. If you are forced to drive through salt water, be sure to rinse your vehicle with fresh water. Move electronics, vehicles or other valuables to higher ground. Monitor vessels to ensure mooring lines don't get too tight and watch out for overwash around boat ramps. Secure canoes or other watercraft stowed on beaches. Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. && Submit your coastal flooding photos to the University of Hawaii Sea Grant College Program's Hawaii and Pacific Islands King Tides Project at: PacificIslandsKingTides.org $$ HIZ003-006-018-040-070000- /O.CAN.PHFO.SU.Y.0031.000000T0000Z-211206T1600Z/ /O.EXT.PHFO.CF.S.0002.000000T0000Z-211207T0000Z/ Kauai Southwest-Waianae Coast-Maui Leeward West-Molokai West- 337 AM HST Mon Dec 6 2021 ...HIGH SURF ADVISORY IS CANCELLED... * WHAT...Surf has fallen below 12 feet along west facing shores. * WHERE...West facing shores. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid driving through flooded roadways. If you are forced to drive through salt water, be sure to rinse your vehicle with fresh water. Move electronics, vehicles or other valuables to higher ground. Monitor vessels to ensure mooring lines don't get too tight and watch out for overwash around boat ramps. Secure canoes or other watercraft stowed on beaches. && Submit your coastal flooding photos to the University of Hawaii Sea Grant College Program's Hawaii and Pacific Islands King Tides Project at: PacificIslandsKingTides.org $$ HIZ016-023-030>034-038-041>044-046-048>052-070000- /O.EXT.PHFO.CF.S.0002.000000T0000Z-211207T0000Z/ Kahoolawe-Kona-Kauai East-Kauai South-East Honolulu- Honolulu Metro-Ewa Plain-Molokai Southeast-Molokai Leeward South- Lanai Windward-Lanai Leeward-Lanai South- Maui Central Valley South-Kipahulu-South Maui/Upcountry- South Haleakala-Big Island South-Big Island Southeast- 337 AM HST Mon Dec 6 2021 * WHAT...Isolated minor coastal flooding expected around high tide late this morning. * WHERE...Low lying coastal areas of Kahoolawe, Kauai, Lanai, Maui, Molokai, Oahu and Big Island. * WHEN...Until 2 PM HST this afternoon. * IMPACTS...Flooding of beaches that are normally dry, minor coastal erosion, and saltwater inundation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid driving through flooded roadways. If you are forced to drive through salt water, be sure to rinse your vehicle with fresh water. Move electronics, vehicles or other valuables to higher ground. Monitor vessels to ensure mooring lines don't get too tight and watch out for overwash around boat ramps. Secure canoes or other watercraft stowed on beaches. && Submit your coastal flooding photos to the University of Hawaii Sea Grant College Program's Hawaii and Pacific Islands King Tides Project at: PacificIslandsKingTides.org $$
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 2, 3:04 PM HST | Flood Watch | HFO | Hawaii, Honolulu, Kauai, Kalawao | 5 days |
| Dec 2, 3:24 PM HST | Areal Flood Advisory | HFO | Kauai | 3 hr |
| Dec 2, 3:26 PM HST | Blizzard Warning | HFO | Hawaii | 3 days |
| Dec 2, 3:26 PM HST | High Wind Warning | HFO | Hawaii, Kalawao | 3 days |
| Dec 2, 3:26 PM HST | Wind Advisory | HFO | Kauai, Kalawao | 44 hr |
| Dec 2, 3:32 PM HST | Gale Warning | HFO | 30 hr | |
| Dec 2, 3:32 PM HST | Small Craft Advisory | HFO | 14 days | |
| Dec 2, 4:02 PM HST | Areal Flood Advisory | HFO | Hawaii | 3 hr |
| Dec 3, 5:16 AM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Dec 3, 9:08 AM HST | High Surf Advisory | HFO | Hawaii, Honolulu, Kauai, Kalawao | 66 hr |
| Dec 3, 1:32 PM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
Nearby
High Surf Warnings in Hawaii, 2021Every high surf warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.