Alert archive / Hawaii / Wind Advisories in 2021
Wind Advisory 5, NWS Honolulu, HI
NWS Honolulu, HI issued this wind advisory at Feb 6, 2021, 3:41 AM HST for Hawaii County, Hawaii. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Feb 6, 2021, 3:41 AM HST (13:41 UTC)
- Expired
- Feb 6, 2021, 12:43 PM HST
- In force
- 9 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 13:43 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, 1.7 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
- 22 J/kg
- Mixed-layer CIN
- -151 J/kg
- Mixed-layer LCL
- 1106 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
568 WWHW70 PHFO 061341 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 341 AM HST Sat Feb 6 2021 ...WIND ADVISORY FOR THE BIG ISLAND SUMMITS... .A strong subtropical jetstream across the main Hawaiian Islands has pushed wind speeds at the Big Island summits above Wind Advisory threshold and will continue to do so through most of the weekend. This advisory may need to be extended or upgraded as conditions warrant. HIZ028-070245- /O.NEW.PHFO.WI.Y.0005.210206T1341Z-210208T0400Z/ Big Island Summits- Including the city of Mauna Loa and Mauna Kea Above 8000 feet 341 AM HST Sat Feb 6 2021 ...WIND ADVISORY IN EFFECT UNTIL 6 PM HST SUNDAY... * WHAT...West to southwest winds to 45 mph with localized gusts over 55 mph. * WHERE...Big Island Summits. * WHEN...Until 6 PM HST Sunday. * 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. && $$
1 follow-up statement
693 WWHW70 PHFO 062243 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 1243 PM HST Sat Feb 6 2021 ...WIND ADVISORY FOR THE BIG ISLAND SUMMITS IS CANCELLED... HIZ028-062345- /O.CAN.PHFO.WI.Y.0005.000000T0000Z-210208T0400Z/ Big Island Summits- Including the city of Mauna Loa and Mauna Kea Above 8000 feet 1243 PM HST Sat Feb 6 2021 ...WIND ADVISORY IS CANCELLED... Winds have dropped below advisory thresholds. Winds are expected to continue to decrease tonight then gradually increase Sunday into Sunday night. Advisory level winds could return by Sunday night. $$ Kino
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 5, 2:22 PM HST | Special Weather Statement | HFO | Hawaii | 53 min |
| Feb 5, 2:39 PM HST | Areal Flood Advisory | HFO | Hawaii | 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.