Alert archive / Hawaii / Wind Advisories in 2020
Wind Advisory 13, NWS Honolulu, HI
NWS Honolulu, HI issued this wind advisory at Apr 10, 2020, 9:18 AM HST for Hawaii County, Hawaii. It was in force for 24 hr.
The area
The counties it named.
The facts
- Issued
- Apr 10, 2020, 9:18 AM HST (19:18 UTC)
- Expired
- Apr 11, 2020, 9:35 AM HST
- In force
- 24 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 19:18 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, 7.3 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
- 9 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 845 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
782 WWHW70 PHFO 101918 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 918 AM HST Fri Apr 10 2020 ...WIND ADVISORY FOR THE BIG ISLAND SUMMITS... HIZ028-110400- /O.NEW.PHFO.WI.Y.0013.200410T1918Z-200411T2200Z/ Big Island Summits- Including the city of Mauna Loa and Mauna Kea Above 8000 feet 918 AM HST Fri Apr 10 2020 ...WIND ADVISORY IN EFFECT UNTIL NOON HST SATURDAY... * WHAT...West winds 45 to 55 mph with gusts up to 65 mph. * WHERE...Big Island Summits. * WHEN...Until noon HST Saturday. * IMPACTS...Motorists should use extra caution, 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. && $$ Jelsema
3 follow-up statements
964 WWHW70 PHFO 110136 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 336 PM HST Fri Apr 10 2020 ...WIND ADVISORY FOR THE BIG ISLAND SUMMITS... HIZ028-111600- /O.CON.PHFO.WI.Y.0013.000000T0000Z-200411T2200Z/ Big Island Summits- Including the city of Mauna Loa and Mauna Kea Above 8000 feet 336 PM HST Fri Apr 10 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL NOON HST SATURDAY... * WHAT...West winds 45 to 55 mph with gusts up to 65 mph. * WHERE...Big Island Summits. * WHEN...Until noon HST Saturday. * IMPACTS...Motorists should use extra caution, winds this strong will make driving difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory for the summits means that sustained winds of at least 45 mph, or gusts of at least 55 mph, are expected. && $$
312 WWHW70 PHFO 111320 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 320 AM HST Sat Apr 11 2020 ...WIND ADVISORY FOR THE BIG ISLAND SUMMITS... HIZ028-112200- /O.CON.PHFO.WI.Y.0013.000000T0000Z-200411T2200Z/ Big Island Summits- Including the city of Mauna Loa and Mauna Kea Above 8000 feet 320 AM HST Sat Apr 11 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL NOON HST TODAY... * WHAT...West winds 45 to 55 mph with gusts up to 65 mph. * WHERE...Mauna Kea and Mauna Loa Summits. * WHEN...Until noon HST today. * IMPACTS...Winds this strong will make driving difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Consider postponing travel to the summits until winds subside. If you must travel to the summits, use extra caution driving and walking. Be careful opening and closing doors. && $$ Birchard
629 WWHW70 PHFO 111935 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 935 AM HST Sat Apr 11 2020 HIZ028-112045- /O.CAN.PHFO.WI.Y.0013.000000T0000Z-200411T2200Z/ Big Island Summits- Including the city of Mauna Loa and Mauna Kea Above 8000 feet 935 AM HST Sat Apr 11 2020 ...WIND ADVISORY IS CANCELLED... Winds have dropped below advisory levels on the Big Island summits, therefore the Wind Advisory has been cancelled. $$ Jelsema
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 3:22 AM HST | High Surf Advisory | HFO | Honolulu, Kauai, Kalawao | 12 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.