Alert archive / Hawaii / Wind Advisories in 2021
Wind Advisory 1, NWS Honolulu, HI
NWS Honolulu, HI issued this wind advisory at Jan 17, 2021, 3:37 PM HST for Honolulu County, Kauai County, Kalawao County, Hawaii. It was in force for 48 hr.
The area
The counties it named.
The facts
- Issued
- Jan 17, 2021, 3:37 PM HST (01:37 UTC)
- Expired
- Jan 19, 2021, 3:38 PM HST
- In force
- 48 hr
- Issued by
- NWS Honolulu, HI
Counties Honolulu County, HI, Kalawao County, HI, Kauai County, HI
The radar
The Molokai radar (PHMO), 116 km from the middle of the area, began a volume at 01:40 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, 1.6 hours before the alert went out and 127 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 100 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 1235 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- -33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted.
290 WWHW70 PHFO 180137 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 337 PM HST Sun Jan 17 2021 ...WIND ADVISORY IN EFFECT THROUGH MONDAY FOR NIIHAU KAUAI OAHU MOLOKAI LANAI MAUI AND KAHOOLAWE... .A vigorous front will move down the island chain from west to east tonight into Monday. Strong and gusty northerly winds with localized gusts over 45 mph are expected behind the front. Winds are expected to gradually decrease Monday night, but is expected to still remain breezy. HIZ001>021-181445- /O.NEW.PHFO.WI.Y.0001.210118T0137Z-210119T0400Z/ 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- 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, and Kula 337 PM HST Sun Jan 17 2021 ...WIND ADVISORY IN EFFECT UNTIL 6 PM HST MONDAY... * WHAT...North winds 20 to 30 mph with localized gusts over 45 mph. * WHERE...Portions of Kahoolawe, Kauai, Lanai, Maui, Molokai, Niihau and Oahu Hawaii. * WHEN...Until 6 PM HST Monday. * IMPACTS...Winds this strong are capable of downing tents or other temporary structures, as well as downing trees and causing power outages. * ADDITIONAL DETAILS...The strongest winds will occur over ridges and through valleys where winds can accelerate downslope. PRECAUTIONARY/PREPAREDNESS ACTIONS... Motorists should use extra caution. && $$ Kino
5 follow-up statements
308 WWHW70 PHFO 181349 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 349 AM HST Mon Jan 18 2021 ...WIND ADVISORY IN EFFECT THROUGH THIS EVENING FOR NIIHAU KAUAI OAHU MOLOKAI LANAI MAUI AND KAHOOLAWE... .A vigorous front will stall out over the Big Island today. Strong and gusty northerly winds with localized gusts up to 50 mph are expected behind the front. Winds are forecast to gradually decrease below advisory thresholds tonight. HIZ001>021-190300- /O.CON.PHFO.WI.Y.0001.000000T0000Z-210119T0400Z/ Niihau-Kauai Windward-Kauai Leeward-Kauai Mountains- Oahu South Shore-Waianae Coast-Oahu North Shore-Oahu Koolau- Olomana-Central Oahu-Waianae Mountains-Molokai Windward- Molokai Leeward-Lanai Makai-Lanai Mauka-Kahoolawe- Maui Windward West-Maui Leeward West-Maui Central Valley- Windward Haleakala-Leeward Haleakala- Including the cities of Lihue, Princeville, Poipu, Waimea, Hanapepe, Kokee State Park, Honolulu, Waikiki, Hawaii Kai, Kapolei, Nanakuli, Makaha, Haleiwa, Waialua, Kahuku, Punaluu, Laie, Kailua, Kaneohe, Waimanalo, Mililani, Wahiawa, Pearl City, Makakilo, Kalaupapa, Kaunakakai, Manele, Lanai City, Wailuku, Lahaina, Kaanapali, Kahului, Haiku, Makawao, Hana, Kihei, Makena, Pukalani, and Kula 349 AM HST Mon Jan 18 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING... * WHAT...North winds 20 to 30 mph with localized gusts up to 50 mph. * WHERE...Niihau, Kauai, Oahu, Molokai, Lanai, Maui and Kahoolawe. * WHEN...Until 6 PM HST this evening. * IMPACTS...Winds this strong are capable of downing tents or other temporary structures, as well as downing trees and causing power outages. * ADDITIONAL DETAILS...The strongest winds will occur over ridges and through valleys where winds can accelerate downslope. PRECAUTIONARY/PREPAREDNESS ACTIONS... Motorists should use extra caution. && $$ RCB
006 WWHW70 PHFO 190123 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 323 PM HST Mon Jan 18 2021 ...WIND ADVISORY IN EFFECT THROUGH TONIGHT FOR NIIHAU KAUAI OAHU MOLOKAI LANAI MAUI AND KAHOOLAWE... .Strong and gusty northerly winds with localized gusts up to 50 mph are expected to continue through this evening then gradually decrease late tonight into Tuesday. HIZ001>021-191430- /O.EXT.PHFO.WI.Y.0001.000000T0000Z-210119T1600Z/ 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- 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, and Kula 323 PM HST Mon Jan 18 2021 ...WIND ADVISORY NOW IN EFFECT UNTIL 6 AM HST TUESDAY... * WHAT...North to northeast winds 20 to 30 mph with localized gusts up to 50 mph. * WHERE...Niihau, Kauai, Oahu, Molokai, Lanai, Maui and Kahoolawe. * WHEN...Until 6 AM HST Tuesday. * IMPACTS...Winds this strong are capable of downing tents or other temporary structures, as well as downing trees and causing power outages. * ADDITIONAL DETAILS...The strongest winds will occur over ridges and through valleys where winds can accelerate downslope. PRECAUTIONARY/PREPAREDNESS ACTIONS... Motorists should use extra caution. && $$ Kino
833 WWHW70 PHFO 191338 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 338 AM HST Tue Jan 19 2021 ...WIND ADVISORY IN EFFECT UNTIL 6 PM FOR NIIHAU KAUAI AND OAHU... .Strong and gusty northeasterly winds with localized gusts up to 50 mph are expected to continue through the day decreasing by this evening. Strong winds over Oahu may decrease by this afternoon. HIZ012>021-191445- /O.CAN.PHFO.WI.Y.0001.000000T0000Z-210119T1600Z/ Molokai Windward-Molokai Leeward-Lanai Makai-Lanai Mauka- Kahoolawe-Maui Windward West-Maui Leeward West- Maui Central Valley-Windward Haleakala-Leeward Haleakala- Including the cities of Kalaupapa, Kaunakakai, Manele, Lanai City, Wailuku, Lahaina, Kaanapali, Kahului, Haiku, Makawao, Hana, Kihei, Makena, Pukalani, and Kula 338 AM HST Tue Jan 19 2021 ...WIND ADVISORY IS CANCELLED FOR MOLOKAI LANAI MAUI AND KAHOOLAWE... Wind speeds have fallen below advisory thresholds. The wind advisory for Maui County has been cancelled. $$ HIZ001>011-200245- /O.EXT.PHFO.WI.Y.0001.000000T0000Z-210120T0400Z/ 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 338 AM HST Tue Jan 19 2021 ...WIND ADVISORY NOW IN EFFECT UNTIL 6 PM HST THIS EVENING... * WHAT...Northeast winds 20 to 30 mph with gusts up to 50 mph. * WHERE...Niihau, Kauai, and Oahu. * WHEN...Until 6 PM HST this evening. * IMPACTS...Winds this strong are capable of downing tents or other temporary structures, as well as downing trees and causing power outages. * ADDITIONAL DETAILS...The strongest winds will occur over ridges and through valleys where winds can accelerate downslope. PRECAUTIONARY/PREPAREDNESS ACTIONS... Motorists should use extra caution. && $$ RCB
446 WWHW70 PHFO 191906 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 906 AM HST Tue Jan 19 2021 ...WIND ADVISORY IN EFFECT UNTIL 6 PM FOR NIIHAU AND KAUAI... .Strong and gusty northeasterly winds with localized gusts up to 50 mph are expected to continue through the day over Kauai County before decreasing this evening. HIZ005>011-192015- /O.CAN.PHFO.WI.Y.0001.000000T0000Z-210120T0400Z/ Oahu South Shore-Waianae Coast-Oahu North Shore-Oahu Koolau- Olomana-Central Oahu-Waianae Mountains- Including the cities of Honolulu, Waikiki, Hawaii Kai, Kapolei, Nanakuli, Makaha, Haleiwa, Waialua, Kahuku, Punaluu, Laie, Kailua, Kaneohe, Waimanalo, Mililani, Wahiawa, Pearl City, and Makakilo 906 AM HST Tue Jan 19 2021 ...WIND ADVISORY IS CANCELLED... $$ HIZ001>004-200400- /O.CON.PHFO.WI.Y.0001.000000T0000Z-210120T0400Z/ Niihau-Kauai Windward-Kauai Leeward-Kauai Mountains- Including the cities of Lihue, Princeville, Poipu, Waimea, Hanapepe, and Kokee State Park 906 AM HST Tue Jan 19 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING... * WHAT...Northeast winds 20 to 30 mph with gusts up to 50 mph. * WHERE...Niihau and Kauai. * WHEN...Until 6 PM HST this evening. * IMPACTS...Winds this strong are capable of downing tents or other temporary structures, as well as downing trees and causing power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... Motorists should use extra caution. && $$ Morrison
199 WWHW70 PHFO 200138 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 338 PM HST Tue Jan 19 2021 HIZ001>004-200245- /O.CAN.PHFO.WI.Y.0001.000000T0000Z-210120T0400Z/ Niihau-Kauai Windward-Kauai Leeward-Kauai Mountains- Including the cities of Lihue, Princeville, Poipu, Waimea, Hanapepe, and Kokee State Park 338 PM HST Tue Jan 19 2021 ...WIND ADVISORY IS CANCELLED... Winds are trending down this afternoon and will diminish further tonight. $$ Morrison
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 17, 3:45 PM HST | Gale Warning | HFO | 36 hr | |
| Jan 17, 3:45 PM HST | Small Craft Advisory | HFO | 24 hr | |
| Jan 17, 4:37 PM HST | Areal Flood Advisory | HFO | Kauai | 3 hr |
| Jan 17, 7:07 PM HST | Areal Flood Advisory | HFO | Hawaii | 3 hr |
| Jan 17, 7:17 PM HST | Areal Flood Advisory | HFO | Kauai | 2 hr |
| Jan 18, 12:06 AM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Jan 18, 12:51 AM HST | Flash Flood Warning | HFO | Kalawao | 6 hr |
| Jan 18, 3:03 AM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Jan 18, 3:49 AM HST | Winter Weather Advisory | HFO | Hawaii | 36 hr |
| Jan 18, 5:16 AM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Jan 18, 8:53 AM HST | Areal Flood Advisory | HFO | Hawaii | 3 hr |
| Jan 18, 10:17 AM HST | Areal Flood Advisory | HFO | Honolulu | 3 hr |
| Jan 18, 10:50 AM HST | Areal Flood Advisory | HFO | Kalawao | 6 hr |
| Jan 18, 11:50 AM HST | Areal Flood Advisory | HFO | Kalawao | 3 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.