Alert archive / Hawaii / Flash Flood Warnings in 2009

Flash Flood Warning 19, NWS Honolulu, HI

November 13, 2009Honolulu County, Hawaii

NWS Honolulu, HI issued this flash flood warning at Nov 13, 2009, 3:16 AM HST for Honolulu County, Hawaii. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Nov 13, 2009, 3:16 AM HST (13:16 UTC)
Expired: Nov 13, 2009, 7:59 AM HST
In force: 5 hr
Issued by: NWS Honolulu, HI
Area: Storm-based polygon
Flood severity: None

County Honolulu County, HI

The nearest sounding before it

Lihue, (PHLI), launched 12:00Z, 1.3 hours before the alert went out and 155 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: 523 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 919 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 94 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 flash flood warning 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 flash flood warning went out at Nov 12, 8:30 PM HST, 6 hours 46 minutes earlier.

Area forecast discussion, Nov 12, 8:30 PM HST, 6 hours 46 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 12, 3:15 PM HST	Areal Flood Advisory	HFO	Hawaii	2 hr
Nov 12, 3:53 PM HST	Areal Flood Advisory	HFO	Kalawao	3 hr
Nov 12, 4:19 PM HST	Areal Flood Advisory	HFO	Hawaii	62 min
Nov 12, 6:25 PM HST	Flash Flood Warning	HFO	Kalawao	2 hr
Nov 12, 6:32 PM HST	Special Marine Warning	HFO		74 min
Nov 12, 9:41 PM HST	Small Craft Advisory	HFO		10 days
Nov 13, 1:51 AM HST	Areal Flood Advisory	HFO	Honolulu	3 hr
Nov 13, 3:20 AM HST	Areal Flood Advisory	HFO	Kauai	3 hr
Nov 13, 3:36 AM HST	Flash Flood Warning	HFO	Kauai	4 hr
Nov 13, 4:31 AM HST	Special Marine Warning	HFO		119 min
Nov 13, 4:40 AM HST	Areal Flood Advisory	HFO	Hawaii	3 hr
Nov 13, 4:56 AM HST	Special Marine Warning	HFO		39 min
Nov 13, 6:32 AM HST	Special Marine Warning	HFO		118 min
Nov 13, 7:45 AM HST	Areal Flood Advisory	HFO	Hawaii	2 hr

Nearby

Flash Flood Warnings in Hawaii, 2009 Every flash flood warning 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.