Alert archive / Hawaii / Wind Advisories in 2021
Wind Advisory 12, NWS Honolulu, HI
NWS Honolulu, HI issued this wind advisory at Mar 19, 2021, 3:28 PM HST for 4 counties in Hawaii. It took effect at Mar 20, 2021, 3:36 AM HST. It was in force for 41 hr.
The area
The counties it named.
The facts
- Issued
- Mar 19, 2021, 3:28 PM HST (01:28 UTC)
- In effect from
- Mar 20, 2021, 3:36 AM HST
- Expired
- Mar 21, 2021, 8:47 PM HST
- In force
- 41 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 01:33 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, 1.5 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
- 116 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1022 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- -16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
675 WWHW70 PHFO 200128 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 328 PM HST Fri Mar 19 2021 ...WIND ADVISORY FOR NIIHAU KAUAI OAHU MOLOKAI LANAI AND FOR PORTIONS OF MAUI AND BIG ISLAND... .A building high pressure system north of Hawaii will drive strong and gusty trade winds across most of the state Saturday and Saturday night. HIZ001>021-024>026-201430- /O.NEW.PHFO.WI.Y.0012.210320T1600Z-210321T1600Z/ Niihau-Kauai Windward-Kauai Leeward-Kauai Mountains- Oahu South Shore-Waianae Coast-Oahu North Shore-Oahu Koolau- Olomana-Central Oahu-Waianae Mountains-Molokai Windward- Molokai Leeward-Lanai Makai-Lanai Mauka-Kahoolawe- Maui Windward West-Maui Leeward West-Maui Central Valley- Windward Haleakala-Leeward Haleakala-South Big Island- Big Island North and East-Kohala- Including the cities of Lihue, Princeville, Poipu, Waimea, Hanapepe, Kokee State Park, Honolulu, Waikiki, Hawaii Kai, Kapolei, Nanakuli, Makaha, Haleiwa, Waialua, Kahuku, Punaluu, Laie, Kailua, Kaneohe, Waimanalo, Mililani, Wahiawa, Pearl City, Makakilo, Kalaupapa, Kaunakakai, Manele, Lanai City, Wailuku, Lahaina, Kaanapali, Kahului, Haiku, Makawao, Hana, Kihei, Makena, Pukalani, Kula, South Point, Pahala, Hilo, Volcano, Honokaa, Kamuela, and Waikoloa 328 PM HST Fri Mar 19 2021 ...WIND ADVISORY IN EFFECT FROM 6 AM SATURDAY TO 6 AM HST SUNDAY... * WHAT...East winds 25 to 30 mph with localized gusts over 45 mph expected. * WHERE...All areas of Niihau, Kauai, Oahu, Molokai, Lanai. All areas of Maui except Haleakala summit. Big Island North and East, Big Island South and Kohala. Strongest winds will be felt near mountain tops and passes, trade wind exposed areas and around incoming showers. * WHEN...From 6 AM Saturday to 6 AM HST Sunday. * IMPACTS...Winds this strong can tear off shingles, knock down trees and large tree branches, blow away loose objects, tents and awnings. High profile vehicles may have difficulty steering at times. * ADDITIONAL DETAILS...Historically, after a period of very heavy rainfall and saturated soils, wind speeds similar to what is expected has caused property damage and power outages from fallen trees. PRECAUTIONARY/PREPAREDNESS ACTIONS... Watch out for falling tree branches when walking or driving. Residents and businesses are urged to take appropriate actions to protect their property. Make sure to secure loose objects, tents and awnings or take them down. Be prepared for power outages. && $$ Foster
6 follow-up statements
707 WWHW70 PHFO 201336 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 336 AM HST Sat Mar 20 2021 HIZ001>021-024>026-210245- /O.EXT.PHFO.WI.Y.0012.210320T1336Z-210321T1600Z/ Niihau-Kauai Windward-Kauai Leeward-Kauai Mountains- Oahu South Shore-Waianae Coast-Oahu North Shore-Oahu Koolau- Olomana-Central Oahu-Waianae Mountains-Molokai Windward- Molokai Leeward-Lanai Makai-Lanai Mauka-Kahoolawe- Maui Windward West-Maui Leeward West-Maui Central Valley- Windward Haleakala-Leeward Haleakala-South Big Island- Big Island North and East-Kohala- Including the cities of Lihue, Princeville, Poipu, Waimea, Hanapepe, Kokee State Park, Honolulu, Waikiki, Hawaii Kai, Kapolei, Nanakuli, Makaha, Haleiwa, Waialua, Kahuku, Punaluu, Laie, Kailua, Kaneohe, Waimanalo, Mililani, Wahiawa, Pearl City, Makakilo, Kalaupapa, Kaunakakai, Manele, Lanai City, Wailuku, Lahaina, Kaanapali, Kahului, Haiku, Makawao, Hana, Kihei, Makena, Pukalani, Kula, South Point, Pahala, Hilo, Volcano, Honokaa, Kamuela, and Waikoloa 336 AM HST Sat Mar 20 2021 ...WIND ADVISORY NOW IN EFFECT UNTIL 6 AM HST SUNDAY... * WHAT...East winds 25 to 30 mph with localized gusts over 45 mph expected. * WHERE...All areas of Niihau, Kauai, Oahu, Molokai, Lanai. All areas of Maui except Haleakala summit. Big Island North and East, Big Island South and Kohala. Strongest winds will be felt near mountain tops and passes, trade wind exposed areas and around incoming showers. * WHEN...Until 6 AM HST Sunday. * IMPACTS...Winds this strong combined with saturated grounds can down trees and large tree branches that could lead to sporadic power outages. Loose objects, tents and awnings could be blown around. High profile vehicles may have difficulty steering at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Watch out for falling tree branches when walking or driving. Residents and businesses are urged to take appropriate actions to protect their property. Make sure to secure loose objects, tents and awnings or take them down. Be prepared for power outages. && $$ Gibbs
315 WWHW70 PHFO 210135 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 335 PM HST Sat Mar 20 2021 HIZ001>021-024>026-211445- /O.CON.PHFO.WI.Y.0012.000000T0000Z-210321T1600Z/ Niihau-Kauai Windward-Kauai Leeward-Kauai Mountains- Oahu South Shore-Waianae Coast-Oahu North Shore-Oahu Koolau- Olomana-Central Oahu-Waianae Mountains-Molokai Windward- Molokai Leeward-Lanai Makai-Lanai Mauka-Kahoolawe- Maui Windward West-Maui Leeward West-Maui Central Valley- Windward Haleakala-Leeward Haleakala-South Big Island- Big Island North and East-Kohala- Including the cities of Lihue, Princeville, Poipu, Waimea, Hanapepe, Kokee State Park, Honolulu, Waikiki, Hawaii Kai, Kapolei, Nanakuli, Makaha, Haleiwa, Waialua, Kahuku, Punaluu, Laie, Kailua, Kaneohe, Waimanalo, Mililani, Wahiawa, Pearl City, Makakilo, Kalaupapa, Kaunakakai, Manele, Lanai City, Wailuku, Lahaina, Kaanapali, Kahului, Haiku, Makawao, Hana, Kihei, Makena, Pukalani, Kula, South Point, Pahala, Hilo, Volcano, Honokaa, Kamuela, and Waikoloa 335 PM HST Sat Mar 20 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST SUNDAY... * WHAT...East winds 25 to 30 mph with localized gusts over 45 mph expected. * WHERE...All areas of Niihau, Kauai, Oahu, Molokai, Lanai. All areas of Maui except Haleakala summit. Big Island North and East, Big Island South and Kohala. Strongest winds will be felt near mountain tops and passes, trade wind exposed areas and around incoming showers. * WHEN...Until 6 AM HST Sunday. * IMPACTS...Winds this strong combined with saturated grounds can down trees and large tree branches that could lead to sporadic power outages. Loose objects, tents and awnings could be blown around. High profile vehicles may have difficulty steering at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Watch out for falling tree branches when walking or driving. Residents and businesses are urged to take appropriate actions to protect their property. Make sure to secure loose objects, tents and awnings or take them down. Be prepared for power outages. && $$ POWELL
938 WWHW70 PHFO 210701 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 901 PM HST Sat Mar 20 2021 ...WIND ADVISORY CANCELLED FOR NIIHAU KAUAI AND OAHU... ...WIND ADVISORY REMAINS IN EFFECT FOR MAUI COUNTY AND THE BIG ISLAND... HIZ001>011-210815- /O.CAN.PHFO.WI.Y.0012.000000T0000Z-210321T1600Z/ Niihau-Kauai Windward-Kauai Leeward-Kauai Mountains- Oahu South Shore-Waianae Coast-Oahu North Shore-Oahu Koolau- Olomana-Central Oahu-Waianae Mountains- Including the cities of Lihue, Princeville, Poipu, Waimea, Hanapepe, Kokee State Park, Honolulu, Waikiki, Hawaii Kai, Kapolei, Nanakuli, Makaha, Haleiwa, Waialua, Kahuku, Punaluu, Laie, Kailua, Kaneohe, Waimanalo, Mililani, Wahiawa, Pearl City, and Makakilo 901 PM HST Sat Mar 20 2021 ...WIND ADVISORY IS CANCELLED... Winds have dropped below advisory thresholds. Therefore the Wind Advisory has been cancelled for Niihau, Kauai and Oahu. $$ HIZ012>021-024>026-211600- /O.CON.PHFO.WI.Y.0012.000000T0000Z-210321T1600Z/ Molokai Windward-Molokai Leeward-Lanai Makai-Lanai Mauka- Kahoolawe-Maui Windward West-Maui Leeward West- Maui Central Valley-Windward Haleakala-Leeward Haleakala- South Big Island-Big Island North and East-Kohala- Including the cities of Kalaupapa, Kaunakakai, Manele, Lanai City, Wailuku, Lahaina, Kaanapali, Kahului, Haiku, Makawao, Hana, Kihei, Makena, Pukalani, Kula, South Point, Pahala, Hilo, Volcano, Honokaa, Kamuela, and Waikoloa 901 PM HST Sat Mar 20 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST SUNDAY... * WHAT...Northeast winds 20 to 30 mph with localized gusts over 45 mph. * WHERE...Portions of Kahoolawe, Lanai, Maui, Molokai and the Big Island. * WHEN...Until 6 AM HST Sunday. * 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. && $$ Jelsema
098 WWHW70 PHFO 211332 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 332 AM HST Sun Mar 21 2021 ...WIND ADVISORY IN EFFECT FOR MAUI COUNTY AND THE BIG ISLAND... HIZ012>021-024>026-220400- /O.EXT.PHFO.WI.Y.0012.000000T0000Z-210322T0400Z/ Molokai Windward-Molokai Leeward-Lanai Makai-Lanai Mauka- Kahoolawe-Maui Windward West-Maui Leeward West- Maui Central Valley-Windward Haleakala-Leeward Haleakala- South Big Island-Big Island North and East-Kohala- Including the cities of Kalaupapa, Kaunakakai, Manele, Lanai City, Wailuku, Lahaina, Kaanapali, Kahului, Haiku, Makawao, Hana, Kihei, Makena, Pukalani, Kula, South Point, Pahala, Hilo, Volcano, Honokaa, Kamuela, and Waikoloa 332 AM HST Sun Mar 21 2021 ...WIND ADVISORY NOW IN EFFECT UNTIL 6 PM HST THIS EVENING... * WHAT...Northeast winds 20 to 30 mph with localized gusts over 50 mph. * WHERE...Portions of Kahoolawe, Lanai, Maui, Molokai and the Big Island. * WHEN...Until 6 PM HST this evening. * IMPACTS...Winds this strong can tear off shingles, knock down tree branches, blow away tents and awnings and make it difficult to steer, especially for drivers of high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Watch out for falling tree branches when walking or driving. Make sure tents and awnings are secure or take them down. Be prepared for power outages. && $$ Jelsema
079 WWHW70 PHFO 220132 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 332 PM HST Sun Mar 21 2021 ...WIND ADVISORY IN EFFECT FOR MAUI COUNTY AND THE BIG ISLAND... HIZ012>021-024>026-221445- /O.EXT.PHFO.WI.Y.0012.000000T0000Z-210322T1600Z/ Molokai Windward-Molokai Leeward-Lanai Makai-Lanai Mauka- Kahoolawe-Maui Windward West-Maui Leeward West- Maui Central Valley-Windward Haleakala-Leeward Haleakala- South Big Island-Big Island North and East-Kohala- Including the cities of Kalaupapa, Kaunakakai, Manele, Lanai City, Wailuku, Lahaina, Kaanapali, Kahului, Haiku, Makawao, Hana, Kihei, Makena, Pukalani, Kula, South Point, Pahala, Hilo, Volcano, Honokaa, Kamuela, and Waikoloa 332 PM HST Sun Mar 21 2021 ...WIND ADVISORY NOW IN EFFECT UNTIL 6 AM HST MONDAY... * WHAT...Northeast winds 20 to 30 mph with localized gusts over 50 mph early tonight, then gradually diminishing later tonight. * WHERE...Portions of Kahoolawe, Lanai, Maui, Molokai and the Big Island. * WHEN...Until 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. 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. && $$ Burke
049 WWHW70 PHFO 220647 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 847 PM HST Sun Mar 21 2021 HIZ012>021-024>026-220800- /O.CAN.PHFO.WI.Y.0012.000000T0000Z-210322T1600Z/ Molokai Windward-Molokai Leeward-Lanai Makai-Lanai Mauka- Kahoolawe-Maui Windward West-Maui Leeward West- Maui Central Valley-Windward Haleakala-Leeward Haleakala- South Big Island-Big Island North and East-Kohala- Including the cities of Kalaupapa, Kaunakakai, Manele, Lanai City, Wailuku, Lahaina, Kaanapali, Kahului, Haiku, Makawao, Hana, Kihei, Makena, Pukalani, Kula, South Point, Pahala, Hilo, Volcano, Honokaa, Kamuela, and Waikoloa 847 PM HST Sun Mar 21 2021 ...WIND ADVISORY IS CANCELLED... Winds have diminished early this evening. Therefore, the Wind Advisory has been cancelled. $$ Houston
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 19, 3:38 PM HST | Gale Warning | HFO | 54 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.