Alert archive / Hawaii / Wind Advisories in 2021
Wind Advisory 13, NWS Honolulu, HI
NWS Honolulu, HI issued this wind advisory at Mar 28, 2021, 5:15 PM HST for Hawaii County, Hawaii. It was in force for 22 hr.
The area
The counties it named.
The facts
- Issued
- Mar 28, 2021, 5:15 PM HST (03:15 UTC)
- Expired
- Mar 29, 2021, 3:23 PM HST
- In force
- 22 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 03:17 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, 3.3 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
- 45 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 902 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
779 WWHW70 PHFO 290315 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 515 PM HST Sun Mar 28 2021 ...WIND ADVISORY FOR THE BIG ISLAND SUMMITS... .A pulse of strong southwest winds is expected to blow across the the Big Island summits later this evening through Monday morning. HIZ028-291615- /O.NEW.PHFO.WI.Y.0013.210329T0315Z-210329T2000Z/ Big Island Summits- Including the city of Mauna Loa and Mauna Kea Above 8000 feet 515 PM HST Sun Mar 28 2021 ...WIND ADVISORY IN EFFECT UNTIL 10 AM HST MONDAY... * WHAT...Southwest winds increasing to 35 to 45 mph with gusts to 60 mph later this evening. * WHERE...Big Island Summits. * WHEN...Until 10 AM HST Monday. * 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. && $$
2 follow-up statements
942 WWHW70 PHFO 291327 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 327 AM HST Mon Mar 29 2021 ...WIND ADVISORY IN EFFECT FOR THE BIG ISLAND SUMMITS... .Strong southwest winds are expected to blow across the the Big Island summits today. HIZ028-300230- /O.EXT.PHFO.WI.Y.0013.000000T0000Z-210330T0400Z/ Big Island Summits- Including the city of Mauna Loa and Mauna Kea Above 8000 feet 327 AM HST Mon Mar 29 2021 ...WIND ADVISORY IN EFFECT UNTIL 6 PM HST THIS EVENING... * WHAT...Southwest winds 40 to 50 mph with gusts to 60 mph. * WHERE...Big Island summits. * WHEN...Until 6 PM HST this evening. * IMPACTS...Winds this strong can make driving and walking difficult. The winds can forcefully open doors and damage hinges or slam doors shut, possibly causing injuries. PRECAUTIONARY/PREPAREDNESS ACTIONS... Consider postponing travel to the summits until conditions improve. If you must travel to the summits, use extra caution walking and driving. Be careful opening or closing doors. && $$ RCB
411 WWHW70 PHFO 300123 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 323 PM HST Mon Mar 29 2021 HIZ028-300230- /O.CAN.PHFO.WI.Y.0013.000000T0000Z-210330T0400Z/ Big Island Summits- Including the city of Mauna Loa and Mauna Kea Above 8000 feet 323 PM HST Mon Mar 29 2021 ...WIND ADVISORY IS CANCELLED... Winds have lowered to below advisory level. |Thus, the wind advisory is canceled. $$
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 7:06 PM HST | Winter Weather Advisory | HFO | Hawaii | 32 hr |
| Mar 29, 8:54 AM HST | Flash Flood Warning | HFO | Kauai | 3 hr |
| Mar 29, 9:53 AM HST | Flash Flood Warning | HFO | Kauai | 2 hr |
| Mar 29, 12:32 PM HST | Flash Flood Watch | HFO | Kauai | 20 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.