Alert archive / Hawaii / Wind Advisories in 2021
Wind Advisory 6, NWS Honolulu, HI
NWS Honolulu, HI issued this wind advisory at Feb 12, 2021, 3:18 AM HST for Hawaii County, Hawaii. It was in force for 25 hr.
The area
The counties it named.
The facts
- Issued
- Feb 12, 2021, 3:18 AM HST (13:18 UTC)
- Expired
- Feb 13, 2021, 3:57 AM HST
- In force
- 25 hr
- Issued by
- NWS Honolulu, HI
County Hawaii County, HI
The radar
The South Shore radar (PHWA), 57 km from the middle of the area, began a volume at 13:19 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
Hilo, (PITO), launched 12:00Z, 1.3 hours before the alert went out and 56 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
- 2 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 1148 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
459 WWHW70 PHFO 121318 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 318 AM HST Fri Feb 12 2021 ...WIND ADVISORY FOR THE BIG ISLAND SUMMITS... HIZ028-130230- /O.NEW.PHFO.WI.Y.0006.210212T1318Z-210213T1600Z/ Big Island Summits- Including the city of Mauna Loa and Mauna Kea Above 8000 feet 318 AM HST Fri Feb 12 2021 ...WIND ADVISORY IN EFFECT UNTIL 6 AM HST SATURDAY... * WHAT...Northeast winds to 45 mph with localized gusts over 55 mph. * WHERE...Big Island Summits. * WHEN...Until 6 AM HST Saturday. * IMPACTS...Winds this strong will make driving difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory for the summits means that sustained winds of at least 45 mph, or gusts of at least 55 mph, are expected. Motorists should use extra caution. && $$ Gibbs
2 follow-up statements
566 WWHW70 PHFO 130135 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 335 PM HST Fri Feb 12 2021 ...WIND ADVISORY FOR THE BIG ISLAND SUMMITS... HIZ028-131445- /O.CON.PHFO.WI.Y.0006.000000T0000Z-210213T1600Z/ Big Island Summits- Including the city of Mauna Loa and Mauna Kea Above 8000 feet 335 PM HST Fri Feb 12 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST SATURDAY... * WHAT...Northeast winds 30 to 50 mph with localized gusts up to 65 mph. * WHERE...Big Island Summits. * WHEN...Until 6 AM HST Saturday. * IMPACTS...Winds this strong will make driving difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory for the summits means that sustained winds of at least 45 mph, or gusts of at least 55 mph, are expected. Motorists should use extra caution. && $$
226 WWHW70 PHFO 131357 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 357 AM HST Sat Feb 13 2021 ...WIND ADVISORY FOR THE BIG ISLAND SUMMITS IN EFFECT UNTIL 6 PM HST THIS EVENING... HIZ028-140300- /O.UPG.PHFO.WI.Y.0006.000000T0000Z-210213T1600Z/ /O.NEW.PHFO.HW.W.0001.210213T1357Z-210214T0400Z/ Big Island Summits- Including the city of Mauna Loa and Mauna Kea Above 8000 feet 357 AM HST Sat Feb 13 2021 ...HIGH WIND WARNING IN EFFECT UNTIL 6 PM HST THIS EVENING... * WHAT...Northeast winds 55 to 65 mph with localized gusts up to 75 mph. * WHERE...Big Island summits of Mauna Kea and Mauna Loa. * WHEN...Until 6 PM this evening. * IMPACTS...Travel to the summits is not recommended until winds have subsided. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take necessary precautions to protect property. Travel to the summit areas should be delayed until winds subside. && $$ RCB
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 12, 3:37 AM HST | High Surf Warning | HFO | Honolulu, Kauai, Kalawao | 48 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.