Alert archive / Hawaii / High Surf Advisories in 2012
High Surf Advisory 21, NWS Honolulu, HI
NWS Honolulu, HI issued this high surf advisory at Apr 13, 2012, 3:38 PM HST for Honolulu County, Kauai County, Kalawao County, Hawaii. It took effect at Apr 14, 2012, 12:00 PM HST. It was in force for 31 hr.
The area
The counties it named.
The facts
- Issued
- Apr 13, 2012, 3:38 PM HST (01:38 UTC)
- In effect from
- Apr 14, 2012, 12:00 PM HST
- Expired
- Apr 15, 2012, 7:00 PM HST
- In force
- 31 hr
- Issued by
- NWS Honolulu, HI
Counties Honolulu County, HI, Kalawao County, HI, Kauai County, HI
The radar
The Molokai radar (PHMO), 116 km from the middle of the area, began a volume at 01:39 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, 1.6 hours before the alert went out and 127 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
- 358 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 777 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
444 WHHW40 PHFO 140138 CFWHFO URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 338 PM HST FRI APR 13 2012 ...HIGH SURF ADVISORY FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI AND OAHU...AND NORTH FACING SHORES OF MOLOKAI AND MAUI STARTING SATURDAY AFTERNOON... .SWELLS GENERATED BY LOW PRESSURE NORTHWEST OF HAWAII ON THURSDAY WILL PUT HIGH SURF ALONG NORTH AND WEST FACING SHORES. HIZ001>003-006>008-012-013-017-019-020-141445- /O.NEW.PHFO.SU.Y.0021.120414T2200Z-120416T0600Z/ NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-WAIANAE COAST- OAHU NORTH SHORE-OAHU KOOLAU-MOLOKAI WINDWARD-MOLOKAI LEEWARD- MAUI WINDWARD WEST-MAUI CENTRAL VALLEY-WINDWARD HALEAKALA- 338 PM HST FRI APR 13 2012 ...HIGH SURF ADVISORY IN EFFECT FROM NOON SATURDAY TO 8 PM HST SUNDAY... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A HIGH SURF ADVISORY...WHICH IS IN EFFECT FROM NOON SATURDAY TO 8 PM HST SUNDAY. * SURF...12 TO 18 FEET ALONG NORTH FACING SHORES...6 TO 12 FEET ALONG WEST FACING SHORES. * TIMING...STARTS SATURDAY AFTERNOON ON NIIHAU AND KAUAI...LATE SATURDAY AFTERNOON ON OAHU...SATURDAY NIGHT ON MOLOKAI AND MAUI. ENDS SUNDAY EVENING. * IMPACTS...ROUGH SURF AND STRONG RIP CURRENTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH EROSION. && $$ CRAIG
5 follow-up statements
337 WHHW40 PHFO 141553 CFWHFO URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 553 AM HST SAT APR 14 2012 ...HIGH SURF ADVISORY FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI AND OAHU...AND NORTH FACING SHORES OF MOLOKAI AND MAUI STARTING SATURDAY AFTERNOON... .SWELLS GENERATED BY LOW PRESSURE NORTHWEST OF HAWAII ON THURSDAY WILL PUT HIGH SURF ALONG NORTH AND WEST FACING SHORES. HIZ001>003-006>008-012-013-017-019-020-150500- /O.CON.PHFO.SU.Y.0021.120414T2200Z-120416T0600Z/ NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-WAIANAE COAST- OAHU NORTH SHORE-OAHU KOOLAU-MOLOKAI WINDWARD-MOLOKAI LEEWARD- MAUI WINDWARD WEST-MAUI CENTRAL VALLEY-WINDWARD HALEAKALA- 553 AM HST SAT APR 14 2012 ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 8 PM HST SUNDAY... A HIGH SURF ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 8 PM HST SUNDAY. * SURF...12 TO 18 FEET ALONG NORTH FACING SHORES...6 TO 12 FEET ALONG WEST FACING SHORES. * TIMING...STARTS SATURDAY AFTERNOON ON NIIHAU AND KAUAI...LATE SATURDAY AFTERNOON ON OAHU...SATURDAY NIGHT ON MOLOKAI AND MAUI. ENDS SUNDAY EVENING. * IMPACTS...ROUGH SURF AND STRONG RIP CURRENTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH EROSION. && $$ MORRISON
144 WHHW40 PHFO 150131 CFWHFO URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 331 PM HST SAT APR 14 2012 ...HIGH SURF ADVISORY FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI AND OAHU...AND NORTH FACING SHORES OF MOLOKAI AND MAUI THROUGH SUNDAY AFTERNOON... HIZ001>003-006>008-012-013-017-019-020-151445- /O.CON.PHFO.SU.Y.0021.000000T0000Z-120416T0600Z/ NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-WAIANAE COAST- OAHU NORTH SHORE-OAHU KOOLAU-MOLOKAI WINDWARD-MOLOKAI LEEWARD- MAUI WINDWARD WEST-MAUI CENTRAL VALLEY-WINDWARD HALEAKALA- 331 PM HST SAT APR 14 2012 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM HST SUNDAY... A HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM HST SUNDAY. * SURF...15 TO 20 FEET ALONG NORTH FACING SHORES...10 TO 15 FEET ALONG WEST FACING SHORES. * TIMING...THROUGH SUNDAY AFTERNOON. * IMPACTS...ROUGH SURF AND STRONG RIP CURRENTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH EROSION. && $$ MORRISON
530 WHHW40 PHFO 151349 CFWHFO URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 349 AM HST SUN APR 15 2012 ...HIGH SURF ADVISORY FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI AND OAHU...AND NORTH FACING SHORES OF MOLOKAI AND MAUI THROUGH THIS AFTERNOON... HIZ001>003-006>008-012-013-017-019-020-160300- /O.CON.PHFO.SU.Y.0021.000000T0000Z-120416T0600Z/ NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-WAIANAE COAST- OAHU NORTH SHORE-OAHU KOOLAU-MOLOKAI WINDWARD-MOLOKAI LEEWARD- MAUI WINDWARD WEST-MAUI CENTRAL VALLEY-WINDWARD HALEAKALA- 349 AM HST SUN APR 15 2012 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM HST THIS EVENING... A HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM HST THIS EVENING. * SURF...15 TO 20 FEET ALONG NORTH FACING SHORES...10 TO 15 FEET ALONG WEST FACING SHORES. * TIMING...THROUGH SUNDAY AFTERNOON. * IMPACTS...ROUGH SURF AND STRONG RIP CURRENTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH EROSION. && $$ CRAIG
451 WHHW40 PHFO 160130 CFWHFO URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 330 PM HST SUN APR 15 2012 ...HIGH SURF ADVISORY FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI AND OAHU...AND NORTH FACING SHORES OF MOLOKAI AND MAUI THROUGH EARLY EVENING... HIZ001>003-006>008-012-013-017-019-020-160600- /O.CON.PHFO.SU.Y.0021.000000T0000Z-120416T0600Z/ NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-WAIANAE COAST- OAHU NORTH SHORE-OAHU KOOLAU-MOLOKAI WINDWARD-MOLOKAI LEEWARD- MAUI WINDWARD WEST-MAUI CENTRAL VALLEY-WINDWARD HALEAKALA- 330 PM HST SUN APR 15 2012 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM HST THIS EVENING... A HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM HST THIS EVENING. * SURF...10 TO 15 FEET ALONG NORTH FACING SHORES...8 TO 12 FEET ALONG WEST FACING SHORES. * TIMING...THROUGH EARLY EVENING. * IMPACTS...ROUGH SURF AND STRONG RIP CURRENTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH EROSION. && $$ BRAVENDER
770 WHHW40 PHFO 160500 CFWHFO URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE HONOLULU HI 700 PM HST SUN APR 15 2012 ...HIGH SURF ADVISORY FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI AND OAHU...AND NORTH FACING SHORES OF MOLOKAI AND MAUI IS CANCELLED... HIZ001>003-006>008-012-013-017-019-020-160600- /O.CAN.PHFO.SU.Y.0021.000000T0000Z-120416T0600Z/ NIIHAU-KAUAI WINDWARD-KAUAI LEEWARD-WAIANAE COAST- OAHU NORTH SHORE-OAHU KOOLAU-MOLOKAI WINDWARD-MOLOKAI LEEWARD- MAUI WINDWARD WEST-MAUI CENTRAL VALLEY-WINDWARD HALEAKALA- 700 PM HST SUN APR 15 2012 ...HIGH SURF ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN HONOLULU HAS CANCELLED THE HIGH SURF ADVISORY. SURF ALONG THE AFFECTED SHORES HAS DROPPED BELOW THE ADVISORY LEVELS. $$ LAU
Nearby
High Surf Advisories in Hawaii, 2012Every high surf advisory in 2012
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.