Alert archive / Hawaii / Wind Advisories in 2018
Wind Advisory 13, NWS Honolulu, HI
NWS Honolulu, HI issued this wind advisory at Feb 21, 2018, 11:23 AM HST for Hawaii County, Hawaii. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Feb 21, 2018, 11:23 AM HST (21:23 UTC)
- Expired
- Feb 21, 2018, 3:37 PM HST
- In force
- 4 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 21:25 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, 9.4 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
- 697 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 677 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- -2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted.
449 WWHW70 PHFO 212123 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 1123 AM HST Wed Feb 21 2018 HIZ028-220400- /O.CAN.PHFO.HW.W.0006.000000T0000Z-180222T0400Z/ /O.NEW.PHFO.WI.Y.0013.180221T2123Z-180222T0400Z/ Big Island Summits- 1123 AM HST Wed Feb 21 2018 ...WIND ADVISORY IN EFFECT UNTIL 6 PM HST THIS EVENING FOR BIG ISLAND SUMMITS... The National Weather Service in Honolulu has issued a Wind Advisory, which is in effect until 6 PM HST this evening. This replaces the High Wind Warning that had been in effect for the Big Island summits. * WINDS...West 25 to 45 mph with localized gusts over 55 mph over the Big Island Summits. * LOCATIONS...Summits of Mauna Kea and Mauna Loa above 12,000 feet. * TIMING...through 6 PM today. * IMPACTS...Winds this strong can walking difficult and can forcefully slam open doors. The winds may make steering difficult, especially for drivers of high profile vehicles. 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. && $$
1 follow-up statement
365 WWHW70 PHFO 220137 NPWHFO URGENT - WEATHER MESSAGE National Weather Service Honolulu HI 337 PM HST Wed Feb 21 2018 HIZ028-220245- /O.CAN.PHFO.WI.Y.0013.000000T0000Z-180222T0400Z/ Big Island Summits- 337 PM HST Wed Feb 21 2018 ...WIND ADVISORY IS CANCELLED... The National Weather Service in Honolulu has cancelled the Wind Advisory for the Big Island Summits. $$
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 21, 3:55 AM HST | Winter Storm Watch | HFO | Hawaii | 12 hr |
| Feb 21, 3:56 AM HST | Flash Flood Watch | HFO | Hawaii, Honolulu, Kauai, Kalawao | 71 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.