Alert archive / Hawaii / Wind Advisories in 2021
Wind Advisory 16, NWS Honolulu, HI
NWS Honolulu, HI issued this wind advisory at Aug 22, 2021, 1:48 PM HST for 4 counties in Hawaii. It took effect at Aug 22, 2021, 6:00 PM HST. It was in force for 33 hr.
The area
The counties it named.
The facts
- Issued
- Aug 22, 2021, 1:48 PM HST (23:48 UTC)
- In effect from
- Aug 22, 2021, 6:00 PM HST
- Expired
- Aug 24, 2021, 3:10 AM HST
- In force
- 33 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 23:49 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, 11.8 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
- 211 J/kg
- Mixed-layer CIN
- -127 J/kg
- Mixed-layer LCL
- 700 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
693 WWHW70 PHFO 222348 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 148 PM HST Sun Aug 22 2021 ...GUSTY WINDS WILL ACOMPANY THE PASSAGE OF FORMER TROPICAL CYCLONE LINDA... HIZ015>018-022-037>050-231600- /O.NEW.PHFO.WI.Y.0016.210823T0400Z-210823T1600Z/ Lanai Mauka-Kahoolawe-Maui Windward West-Maui Leeward West- Haleakala Summit-Molokai Windward-Molokai Southeast-Molokai North- Molokai West-Molokai Leeward South-Lanai Windward-Lanai Leeward- Lanai South-Maui Central Valley North-Maui Central Valley South- Windward Haleakala-Kipahulu-South Maui/Upcountry-South Haleakala- Including the cities of Lanai City, Wailuku, Lahaina, Kaanapali, Haleakala National Park Above 6000 feet, Kalaupapa, Halawa Valley, Pukoo, Hoolehua, Kepuhi, Kaunakakai, Maunaloa, Shipwreck Beach, Kaumalapau Harbor, Manele, Kahului, Maalaea, Haiku, Makawao, Hana, Hamoa, Kihei, Makena, Pukalani, Kula, Ulupalakua, Kipahulu, and Kaupo 148 PM HST Sun Aug 22 2021 ...WIND ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM HST MONDAY... * WHAT...Northerly winds 20 to 30 mph with localized gusts over 50 mph expected. * WHERE...All of Maui County. * WHEN...From 6 PM this evening to 6 AM HST Monday. * IMPACTS...Winds this strong can tear off shingles, knock down tree branches, blow away tents and awnings and make it difficult to steer, especially for drivers of high profile vehicles. * ADDITIONAL DETAILS...Winds across Maui County will be highly variable tonight. Periods of light or variable wind may be interrupted by brief periods of much stronger wind gusts. PRECAUTIONARY/PREPAREDNESS ACTIONS... Consider postponing travel to the summits until conditions improve. If you must travel to the summits, use extra caution walking and driving. Be careful opening or closing doors. && $$ HIZ006-007-009>011-032>036-240400- /O.NEW.PHFO.WI.Y.0016.210823T1600Z-210824T0400Z/ Waianae Coast-Oahu North Shore-Olomana-Central Oahu- Waianae Mountains-East Honolulu-Honolulu Metro-Ewa Plain- Koolau Windward-Koolau Leeward- Including the cities of Nanakuli, Waianae, Makaha, Waialua, Haleiwa, Pupukea, Kailua, Kaneohe, Waimanalo, Mililani, Wahiawa, Pearl City, Makakilo, Hawaii Kai, Aina Haina, Kahala, Honolulu, Waikiki, Kapolei, Kahuku, Laie, Punaluu, Kahaluu, Ahuimanu, Nuuanu, Manoa, and Palolo 148 PM HST Sun Aug 22 2021 ...WIND ADVISORY IN EFFECT FROM 6 AM TO 6 PM HST MONDAY... * WHAT...Northeast winds 25 to 30 mph with localized gusts over 50 mph expected. * WHERE...Oahu. * WHEN...From 6 AM to 6 PM HST Monday. * IMPACTS...Winds this strong can tear off shingles, knock down tree branches, blow away tents and awnings and make it difficult to steer, especially for drivers of high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Watch out for falling tree branches when walking or driving. Make sure tents and awnings are secure or take them down. Be prepared for power outages. && $$ HIZ001-003-004-029>031-240430- /O.NEW.PHFO.WI.Y.0016.210823T1600Z-210824T1600Z/ Niihau-Kauai Southwest-Kauai Mountains-Kauai North-Kauai East- Kauai South- Including the cities of Waimea, Waimea Canyon State Park, Hanapepe, Kekaha, Barking Sands, Kokee State Park, Princeville, Hanalei, Na Pali State Park, Lihue, Kapaa, Anahola, Poipu, Kalaheo, and Koloa 148 PM HST Sun Aug 22 2021 ...WIND ADVISORY IN EFFECT FROM 6 AM MONDAY TO 6 AM HST TUESDAY... * WHAT...East winds 20 to 30 mph with localized gusts over 50 mph expected. * WHERE...Portions of Kauai and Niihau Hawaii. * WHEN...From 6 AM Monday to 6 AM HST Tuesday. * IMPACTS...Winds this strong can tear off shingles, knock down tree branches, blow away tents and awnings and make it difficult to steer, especially for drivers of high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Watch out for falling tree branches when walking or driving. Make sure tents and awnings are secure or take them down. Be prepared for power outages. && $$
5 follow-up statements
251 WWHW70 PHFO 231302 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 302 AM HST Mon Aug 23 2021 ...GUSTY WINDS WILL ACCOMPANY A GALE LOW AS IT MOVES FROM EAST TO WEST ACROSS THE WESTERN ISLANDS... HIZ016>018-022-045>050-231415- /O.CAN.PHFO.WI.Y.0016.000000T0000Z-210823T1600Z/ Kahoolawe-Maui Windward West-Maui Leeward West-Haleakala Summit- Maui Central Valley North-Maui Central Valley South- Windward Haleakala-Kipahulu-South Maui/Upcountry-South Haleakala- Including the cities of Wailuku, Lahaina, Kaanapali, Haleakala National Park Above 6000 feet, Kahului, Maalaea, Haiku, Makawao, Hana, Hamoa, Kihei, Makena, Pukalani, Kula, Ulupalakua, Kipahulu, and Kaupo 302 AM HST Mon Aug 23 2021 ...WIND ADVISORY IS CANCELLED... $$ HIZ015-037>044-232200- /O.EXT.PHFO.WI.Y.0016.000000T0000Z-210823T2200Z/ Lanai Mauka-Molokai Windward-Molokai Southeast-Molokai North- Molokai West-Molokai Leeward South-Lanai Windward-Lanai Leeward- Lanai South- Including the cities of Lanai City, Kalaupapa, Halawa Valley, Pukoo, Hoolehua, Kepuhi, Kaunakakai, Maunaloa, Shipwreck Beach, Kaumalapau Harbor, and Manele 302 AM HST Mon Aug 23 2021 ...WIND ADVISORY NOW IN EFFECT UNTIL NOON HST TODAY... * WHAT...Northeast winds 20 to 30 mph with localized gusts over 50 mph are expected. * WHERE...Molokai and Lanai. * WHEN...Until noon HST today. * IMPACTS...Winds this strong can tear off shingles, knock down tree branches, blow away tents and awnings and make it difficult to steer, especially for drivers of high profile vehicles. * ADDITIONAL DETAILS...Winds across Molokai and Lanai will be highly variable this morning. Periods of light and variable winds may be interrupted by brief periods of much stronger wind gusts. PRECAUTIONARY/PREPAREDNESS ACTIONS... Watch out for falling tree branches when walking or driving. Make sure tents and awnings are secure or take them down. Be prepared for power outages. && $$ HIZ006-007-009>011-032>036-240215- /O.CON.PHFO.WI.Y.0016.210823T1600Z-210824T0400Z/ Waianae Coast-Oahu North Shore-Olomana-Central Oahu- Waianae Mountains-East Honolulu-Honolulu Metro-Ewa Plain- Koolau Windward-Koolau Leeward- Including the cities of Nanakuli, Waianae, Makaha, Waialua, Haleiwa, Pupukea, Kailua, Kaneohe, Waimanalo, Mililani, Wahiawa, Pearl City, Makakilo, Hawaii Kai, Aina Haina, Kahala, Honolulu, Waikiki, Kapolei, Kahuku, Laie, Punaluu, Kahaluu, Ahuimanu, Nuuanu, Manoa, and Palolo 302 AM HST Mon Aug 23 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 6 PM HST THIS EVENING... * WHAT...Northeast winds 25 to 30 mph with localized gusts over 50 mph are expected. * WHERE...Oahu. * WHEN...From 6 AM this morning to 6 PM HST this evening. * IMPACTS...Winds this strong can tear off shingles, knock down tree branches, blow away tents and awnings and make it difficult to steer, especially for drivers of high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Watch out for falling tree branches when walking or driving. Make sure tents and awnings are secure or take them down. Be prepared for power outages. && $$ HIZ001-003-004-029>031-240215- /O.CON.PHFO.WI.Y.0016.210823T1600Z-210824T1600Z/ Niihau-Kauai Southwest-Kauai Mountains-Kauai North-Kauai East- Kauai South- Including the cities of Waimea, Waimea Canyon State Park, Hanapepe, Kekaha, Barking Sands, Kokee State Park, Princeville, Hanalei, Na Pali State Park, Lihue, Kapaa, Anahola, Poipu, Kalaheo, and Koloa 302 AM HST Mon Aug 23 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 6 AM HST TUESDAY... * WHAT...Northeast to east winds 20 to 30 mph with localized gusts over 50 mph are expected. * WHERE...Kauai and Niihau. * WHEN...From 6 AM this morning to 6 AM HST Tuesday. * IMPACTS...Winds this strong can tear off shingles, knock down tree branches, blow away tents and awnings and make it difficult to steer, especially for drivers of high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Watch out for falling tree branches when walking or driving. Make sure tents and awnings are secure or take them down. Be prepared for power outages. && $$ Houston
010 WWHW70 PHFO 232128 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 1128 AM HST Mon Aug 23 2021 HIZ015-037>044-232230- /O.CAN.PHFO.WI.Y.0016.000000T0000Z-210823T2200Z/ Lanai Mauka-Molokai Windward-Molokai Southeast-Molokai North- Molokai West-Molokai Leeward South-Lanai Windward-Lanai Leeward- Lanai South- Including the cities of Lanai City, Kalaupapa, Halawa Valley, Pukoo, Hoolehua, Kepuhi, Kaunakakai, Maunaloa, Shipwreck Beach, Kaumalapau Harbor, and Manele 1128 AM HST Mon Aug 23 2021 ...WIND ADVISORY IS CANCELLED... Wind advisory cancelled for Lanai and Molokai. $$ HIZ006-007-009>011-032>036-240400- /O.CON.PHFO.WI.Y.0016.000000T0000Z-210824T0400Z/ Waianae Coast-Oahu North Shore-Olomana-Central Oahu- Waianae Mountains-East Honolulu-Honolulu Metro-Ewa Plain- Koolau Windward-Koolau Leeward- Including the cities of Nanakuli, Waianae, Makaha, Waialua, Haleiwa, Pupukea, Kailua, Kaneohe, Waimanalo, Mililani, Wahiawa, Pearl City, Makakilo, Hawaii Kai, Aina Haina, Kahala, Honolulu, Waikiki, Kapolei, Kahuku, Laie, Punaluu, Kahaluu, Ahuimanu, Nuuanu, Manoa, and Palolo 1128 AM HST Mon Aug 23 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING... * WHAT...Northeast winds 20 to 30 mph with localized gusts over 50 mph are expected. * WHERE...Oahu...mainly over northern areas. * WHEN...Until 6 PM HST this evening. * IMPACTS...Winds this strong can tear off shingles, knock down tree branches, blow away tents and awnings and make it difficult to steer, especially for drivers of high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Watch out for falling tree branches when walking or driving. Make sure tents and awnings are secure or take them down. Be prepared for power outages. && $$ HIZ001-003-004-029>031-241030- /O.CON.PHFO.WI.Y.0016.000000T0000Z-210824T1600Z/ Niihau-Kauai Southwest-Kauai Mountains-Kauai North-Kauai East- Kauai South- Including the cities of Waimea, Waimea Canyon State Park, Hanapepe, Kekaha, Barking Sands, Kokee State Park, Princeville, Hanalei, Na Pali State Park, Lihue, Kapaa, Anahola, Poipu, Kalaheo, and Koloa 1128 AM HST Mon Aug 23 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST TUESDAY... * WHAT...Northeast to east winds 20 to 30 mph with localized gusts over 50 mph are expected. * WHERE...Kauai and Niihau. * WHEN...Winds will increase this afternoon and continue through tonight. * IMPACTS...Winds this strong can tear off shingles, knock down tree branches, blow away tents and awnings and make it difficult to steer, especially for drivers of high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Watch out for falling tree branches when walking or driving. Make sure tents and awnings are secure or take them down. Be prepared for power outages. && $$
680 WWHW70 PHFO 240146 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 346 PM HST Mon Aug 23 2021 HIZ006-007-009>011-032>036-241000- /O.EXT.PHFO.WI.Y.0016.000000T0000Z-210824T1000Z/ Waianae Coast-Oahu North Shore-Olomana-Central Oahu- Waianae Mountains-East Honolulu-Honolulu Metro-Ewa Plain- Koolau Windward-Koolau Leeward- Including the cities of Nanakuli, Waianae, Makaha, Waialua, Haleiwa, Pupukea, Kailua, Kaneohe, Waimanalo, Mililani, Wahiawa, Pearl City, Makakilo, Hawaii Kai, Aina Haina, Kahala, Honolulu, Waikiki, Kapolei, Kahuku, Laie, Punaluu, Kahaluu, Ahuimanu, Nuuanu, Manoa, and Palolo 346 PM HST Mon Aug 23 2021 ...WIND ADVISORY NOW IN EFFECT UNTIL MIDNIGHT HST TONIGHT... * WHAT...Northeast winds 20 to 30 mph with localized gusts over 50 mph are expected. * WHERE...Oahu. * WHEN...Until midnight HST tonight. * IMPACTS...Winds this strong can tear off shingles, knock down tree branches, blow away tents and awnings and make it difficult to steer, especially for drivers of high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Watch out for falling tree branches when walking or driving. Make sure tents and awnings are secure or take them down. Be prepared for power outages. && $$ HIZ001-003-004-029>031-241500- /O.CON.PHFO.WI.Y.0016.000000T0000Z-210824T1600Z/ Niihau-Kauai Southwest-Kauai Mountains-Kauai North-Kauai East- Kauai South- Including the cities of Waimea, Waimea Canyon State Park, Hanapepe, Kekaha, Barking Sands, Kokee State Park, Princeville, Hanalei, Na Pali State Park, Lihue, Kapaa, Anahola, Poipu, Kalaheo, and Koloa 346 PM HST Mon Aug 23 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST TUESDAY... * WHAT...Northeast to east winds 20 to 30 mph with localized gusts over 50 mph are expected. * WHERE...Kauai and Niihau. * WHEN...Through tonight. * IMPACTS...Winds this strong can tear off shingles, knock down tree branches, blow away tents and awnings and make it difficult to steer, especially for drivers of high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Watch out for falling tree branches when walking or driving. Make sure tents and awnings are secure or take them down. Be prepared for power outages. && $$
038 WWHW70 PHFO 240848 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 1048 PM HST Mon Aug 23 2021 HIZ006-007-009>011-032>036-241000- /O.CAN.PHFO.WI.Y.0016.000000T0000Z-210824T1000Z/ Waianae Coast-Oahu North Shore-Olomana-Central Oahu- Waianae Mountains-East Honolulu-Honolulu Metro-Ewa Plain- Koolau Windward-Koolau Leeward- Including the cities of Nanakuli, Waianae, Makaha, Waialua, Haleiwa, Pupukea, Kailua, Kaneohe, Waimanalo, Mililani, Wahiawa, Pearl City, Makakilo, Hawaii Kai, Aina Haina, Kahala, Honolulu, Waikiki, Kapolei, Kahuku, Laie, Punaluu, Kahaluu, Ahuimanu, Nuuanu, Manoa, and Palolo 1048 PM HST Mon Aug 23 2021 ...WIND ADVISORY IS CANCELLED FOR OAHU... The threat of strong winds has diminished this evening. $$ HIZ001-003-004-029>031-241600- /O.CON.PHFO.WI.Y.0016.000000T0000Z-210824T1600Z/ Niihau-Kauai Southwest-Kauai Mountains-Kauai North-Kauai East- Kauai South- Including the cities of Waimea, Waimea Canyon State Park, Hanapepe, Kekaha, Barking Sands, Kokee State Park, Princeville, Hanalei, Na Pali State Park, Lihue, Kapaa, Anahola, Poipu, Kalaheo, and Koloa 1048 PM HST Mon Aug 23 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST TUESDAY... * WHAT...Northeast to east winds 20 to 30 mph with localized gusts to 45 mph. * WHERE...Kauai and Niihau. * WHEN...Through tonight. * IMPACTS...Winds this strong can tear off shingles, knock down tree branches, blow away tents and awnings and make it difficult to steer, especially for drivers of high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Watch out for falling tree branches when walking or driving. Make sure tents and awnings are secure or take them down. Be prepared for power outages. && $$ Gibbs
249 WWHW70 PHFO 241310 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 310 AM HST Tue Aug 24 2021 HIZ001-003-004-029>031-241415- /O.CAN.PHFO.WI.Y.0016.000000T0000Z-210824T1600Z/ Niihau-Kauai Southwest-Kauai Mountains-Kauai North-Kauai East- Kauai South- Including the cities of Waimea, Waimea Canyon State Park, Hanapepe, Kekaha, Barking Sands, Kokee State Park, Princeville, Hanalei, Na Pali State Park, Lihue, Kapaa, Anahola, Poipu, Kalaheo, and Koloa 310 AM HST Tue Aug 24 2021 ...WIND ADVISORY IS CANCELLED... The threat of strong winds has diminished. $$ Gibbs
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 4:01 PM HST | High Surf Advisory | HFO | Hawaii, Honolulu, Kauai, Kalawao | 59 hr |
| Aug 21, 9:00 PM HST | Small Craft Advisory | HFO | 54 hr | |
| Aug 22, 9:53 AM HST | Gale Warning | HFO | 30 hr |
Nearby
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.