Alert archive / Hawaii / High Surf Advisories in 2009

High Surf Advisory 39, NWS Honolulu, HI

November 29, 2009Honolulu County, Kauai County, Kalawao County, Hawaii

NWS Honolulu, HI issued this high surf advisory at Nov 29, 2009, 3:35 PM HST for Honolulu County, Kauai County, Kalawao County, Hawaii. It took effect at Nov 30, 2009, 6:00 AM HST. It was in force for 22 hr.

The area

The counties it named.

The facts

Issued: Nov 29, 2009, 3:35 PM HST (01:35 UTC)
In effect from: Nov 30, 2009, 6:00 AM HST
Expired: Dec 1, 2009, 3:31 AM HST
In force: 22 hr
Issued by: NWS Honolulu, HI

Counties Honolulu County, HI, Kalawao County, HI, Kauai County, HI

The nearest sounding before it

Hilo, (PITO), launched 00:00Z, 1.6 hours before the alert went out and 391 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 105 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 1102 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 43 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Nov 29, 8:50 AM HST, 6 hours 45 minutes earlier.

Area forecast discussion, Nov 29, 8:50 AM HST, 6 hours 45 minutes before

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The office that day

Everything else NWS Honolulu, HI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 29, 8:58 PM HST	Areal Flood Advisory	HFO	Kalawao	3 hr
Nov 29, 9:48 PM HST	Winter Weather Advisory	HFO	Hawaii	14 hr
Nov 29, 10:17 PM HST	Areal Flood Advisory	HFO	Hawaii	3 hr
Nov 29, 11:02 PM HST	Flash Flood Warning	HFO	Hawaii	95 min

Nearby

High Surf Advisories in Hawaii, 2009 Every high surf advisory in 2009

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.