Alert archive / Hawaii / Wind Advisories in 2023
Wind Advisory 21, NWS Honolulu, HI
NWS Honolulu, HI issued this wind advisory at Oct 23, 2023, 7:17 PM HST for Hawaii County, Hawaii. It was in force for 20 hr.
The area
The counties it named.
The facts
- Issued
- Oct 23, 2023, 7:17 PM HST (05:17 UTC)
- Expired
- Oct 24, 2023, 3:43 PM HST
- In force
- 20 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 05:18 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 00:00Z, 5.3 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
- 173 J/kg
- Mixed-layer CIN
- -268 J/kg
- Mixed-layer LCL
- 909 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -42 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.5
The text
As transmitted.
071 WWHW70 PHFO 240517 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 717 PM HST Mon Oct 23 2023 ...WIND ADVISORY IN EFFECT UNTIL 8 AM HST TUESDAY FOR BIG ISLAND SUMMITS... .Strong upper level winds associated with the low pressure system north of the state will produce wind advisory conditions over the summits lasting into Tuesday morning. These strong wind speeds at summit level will slowly decrease through the Tuesday morning hours. HIZ028-241800- /O.NEW.PHFO.WI.Y.0021.231024T0517Z-231024T1800Z/ Big Island Summits- 717 PM HST Mon Oct 23 2023 ...WIND ADVISORY IN EFFECT UNTIL 8 AM HST TUESDAY... * WHAT...South to southwest winds 40 to 50 mph with localized gusts near 60 mph are expected. * WHERE...Big Island Summits. * WHEN...Until 8 AM HST Tuesday. * IMPACTS...Winds this strong can make driving and walking difficult. The winds can forcefully open doors and damage hinges or slam doors shut, possibly causing injuries. PRECAUTIONARY/PREPAREDNESS ACTIONS... Consider postponing travel to the summits until conditions improve. If you must travel to the summits, use extra caution walking and driving. Be careful opening or closing doors. && $$ RCB
2 follow-up statements
664 WWHW70 PHFO 241342 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 342 AM HST Tue Oct 24 2023 ...WIND ADVISORY IN EFFECT UNTIL 6 PM HST THIS EVENING FOR BIG ISLAND SUMMITS... .Strong upper level winds associated with the low pressure system north of the state will produce wind advisory conditions over the summits today. These strong wind speeds at summit level will slowly decrease through the morning and afternoon hours. HIZ028-250245- /O.EXT.PHFO.WI.Y.0021.000000T0000Z-231025T0400Z/ Big Island Summits- 342 AM HST Tue Oct 24 2023 ...WIND ADVISORY NOW IN EFFECT UNTIL 6 PM HST THIS EVENING... * WHAT...Southwest winds 40 to 45 mph with localized gusts over 50 mph. * WHERE...Big Island Summits. * WHEN...Until 6 PM HST this evening. * IMPACTS...Winds this strong can make driving and walking difficult. The winds can forcefully open doors and damage hinges or slam doors shut, possibly causing injuries. PRECAUTIONARY/PREPAREDNESS ACTIONS... Consider postponing travel to the summits until conditions improve. If you must travel to the summits, use extra caution walking and driving. Be careful opening or closing doors. && $$ RCB
738 WWHW70 PHFO 250143 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 343 PM HST Tue Oct 24 2023 HIZ028-250245- /O.CAN.PHFO.WI.Y.0021.000000T0000Z-231025T0400Z/ Big Island Summits- 343 PM HST Tue Oct 24 2023 ...WIND ADVISORY IS CANCELLED... Winds at the summits continue to gradually decrease, and are expected to remain below advisory criteria. Thus the advisory is cancelled. $$ R Ballard
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 23, 3:16 PM HST | Coastal Flood Statement | HFO | Kauai | 24 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.