Alert archive / Hawaii / High Surf Advisories in 2016
High Surf Advisory 8, NWS Honolulu, HI
NWS Honolulu, HI issued this high surf advisory at Jan 19, 2016, 3:29 PM HST for 4 counties in Hawaii. It took effect at Jan 20, 2016, 12:00 AM HST. It was in force for 51 hr.
The area
The counties it named.
The facts
- Issued
- Jan 19, 2016, 3:29 PM HST (01:29 UTC)
- In effect from
- Jan 20, 2016, 12:00 AM HST
- Expired
- Jan 22, 2016, 3:22 AM HST
- In force
- 51 hr
- Issued by
- NWS Honolulu, HI
Counties Hawaii County, HI, Honolulu County, HI, Kalawao County, HI, Kauai County, HI
The radar
The Molokai radar (PHMO), 38 km from the middle of the area, began a volume at 01:28 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
Lihue, (PHLI), launched 00:00Z, 1.5 hours before the alert went out and 214 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1170 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this high surf advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Honolulu, HI wrote its last area forecast discussion before this high surf advisory went out at Jan 19, 9:34 AM HST, 5 hours 55 minutes earlier.
Area forecast discussion, Jan 19, 9:34 AM HST, 5 hours 55 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 934 AM HST TUE JAN 19 2016 .SYNOPSIS... A RIDGE OVER THE STATE WILL MAINTAIN LIGHT WINDS AND MOSTLY CLEAR SKIES THROUGH THIS EVENING. A WEAK FRONT PASSING THROUGH THE SMALLER ISLANDS TONIGHT AND WEDNESDAY WILL BRING A CHANCE OF SHOWERS...BUT DRY NORTH WINDS WILL FOLLOW THE FRONT. TRADE WINDS THURSDAY AND FRIDAY WILL FOCUS THE MAJORITY OF SHOWERS OVER THE WINDWARD MOUNTAIN SLOPES. ANOTHER WEAK FRONT WILL APPROACH OVER THE WEEKEND...BRINGING LIGHT AND VARIABLE WINDS. && .DISCUSSION... A HIGH PRESSURE RIDGE EXTENDS EAST TO WEST OVER OAHU AND MOLOKAI THIS MORNING... MAINTAINING LIGHT AND VARIABLE WINDS ACROSS THE STATE. VOLCANIC HAZE...OR VOG... IS LINGERING OVER AND AROUND THE BIG ISLAND BUT IS NOT EXPECTED TO REACH THE REST OF THE STATE. WIDESPREAD AFTERNOON SEA BREEZES AND NIGHTTIME LAND BREEZES WILL CONTINUE THROUGH TONIGHT BRINGING INCREASED AFTERNOON CLOUDINESS...AND NIGHTTIME CLEARING SKIES. OVERNIGHT TEMPERATURES WILL BE COOLER THAN NORMAL WITH THE DOWNSLOPE FLOW FROM HIGHER ELEVATIONS BRINGING COOLER AIR TO SEA LEVEL LOCATIONS. DEW POINT TEMPERATURES WILL REMAIN IN THE LOWER 60/S MAINTAINING COMFORTABLE DAYTIME CONDITIONS. A DISSIPATING COLD FRONT WILL MOVE THROUGH THE SMALLER ISLANDS LATE TONIGHT AND WEDNESDAY BRINGING LOW CLOUDS AND LIMITED RAINFALL TO MAINLY NORTH FACING SLOPES. NORTH WINDS BEHIND THE FRONT WEDNESDAY WILL MAINTAIN LOW DEW POINTS AND DRY CONDITIONS. A TRANSIENT HIGH PRESSURE WILL TRANSVERSE FROM WEST TO EAST...NORTH OF THE ISLANDS... AND WILL BRING TRADE WINDS THURSDAY AND FRIDAY WITH LIMITED WINDWARD CLOUDS AND SHOWERS. ANOTHER APPROACHING WEAK FRONT WILL PUSH THE A HIGH PRESSURE RIDGE BACK NEAR THE ISLANDS SATURDAY BRINGING LIGHT AND VARIABLE WINDS OVER THE WEEKEND. AFTERNOON SEA BREEZES WILL DEVELOP WITH THE ASSOCIATED LOW CLOUD BUILDUPS OVER THE MOUNTAINS... WITH THE OPPOSING DOWNSLOPE FLOW INITIATING OVERNIGHT. && .AVIATION... HIGH PRESSURE WILL REMAIN THE DOMINANT WEATHER FEATURE TODAY... ALLOWING FOR SEA BREEZE DEVELOPMENT IN MOST AREAS...AND KEEPING RAIN CHANCES LOW. VFR CONDITIONS ARE EXPECTED AT THE TAF SITES...ALTHOUGH SOME MVFR CIGS WILL BE POSSIBLE AT PHNY THIS AFTERNOON. A COLD FRONT WILL MOVE THROUGH KAUAI AND APPROACH OAHU LATE TONIGHT...BRINGING A CHANCE FOR SHOWERS TO PHLI...PHJR AND PHNL. NO AIRMETS ARE IN EFFECT AND NONE ARE EXPECTED TODAY. A MT OBSCURATION AIRMET MAY BE NEEDED LATE TONIGHT AS THE FRONT MOVES THROUGH KAUAI AND INTO OAHU. && .MARINE... SURFACE WINDS REMAIN LIGHT AND SEAS WILL BE BELOW 10 FT THROUGH THIS EVENING. A LARGE NNW SWELL WILL SPREAD ACROSS THE HAWAIIAN WATERS STARTING LATE TONIGHT...REQUIRING A SMALL CRAFT ADVISORY FOR THOSE WATERS EXPOSED TO THE NNW SWELL. SEAS WILL REMAIN NEAR THE SCA THRESHOLD THROUGH THURSDAY AFTERNOON BEFORE DROPPING FROM WEST TO EAST AS THE SWELL TRENDS DOWN THURSDAY EVENING. THE NEXT SCA APPEARS LIKELY SUNDAY WHEN A LARGE WNW SWELL ARRIVES. THE CURRENT NORTH-NORTHWEST SWELL WILL CONTINUE TO TREND DOWN TODAY. AS NOTED ABOVE...A LARGE NNW SWELL WILL ARRIVE EARLY WEDNESDAY. THIS SWELL WILL LIKELY INCREASE SURF HEIGHTS TO WARNING CRITERIA ALONG NORTH AND WEST FACING SHORES OF THE SMALLER ISLANDS INTO WEDNESDAY EVENING AN THEN GRADUALLY DROP WEDNESDAY NIGHT AND THURSDAY. A LARGE WNW SWELL IS LIKELY SUNDAY THROUGH MONDAY...RESULTING IN WARNING-LEVEL SURF ALONG NORTH AND WEST FACING SHORES...INCLUDING WEST FACING SHORES OF THE BIG ISLAND. OTHERWISE...A SMALL SOUTH SWELL WILL CONTINUE THROUGH THE MIDDLE OF THIS WEEK. && .HFO WATCHES/WARNINGS/ADVISORIES... NONE. && MORRISON...DISCUSSION AND MARINE BEDAL...AVIATION
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 19, 3:29 PM HST | High Surf Warning | HFO | Honolulu, Kauai, Kalawao | 48 hr |
| Jan 19, 3:55 PM HST | Small Craft Advisory | HFO | 38 hr |
Nearby
High Surf Advisories in Hawaii, 2016Every high surf advisory in 2016
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.