Alert archive / Hawaii / Flash Flood Warnings in 2024

Flash Flood Warning 22, NWS Honolulu, HI

October 26, 2024Honolulu County, Hawaii

NWS Honolulu, HI issued this flash flood warning at Oct 26, 2024, 10:16 AM HST for Honolulu County, Hawaii. It was in force for 3 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
Oct 26, 2024, 10:16 AM HST (20:16 UTC)
Expired
Oct 26, 2024, 1:15 PM HST
In force
3 hr
Issued by
NWS Honolulu, HI
Area
Storm-based polygon
Flood severity
None

County Honolulu County, HI

The radar

The Molokai radar (PHMO), 88 km from the middle of the area, began a volume at 20:16 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 12:00Z, 8.3 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-pSkew-T log-p diagram, Lihue, at 12:00Z on 2024-10-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 675 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lihue, at 12:00Z on 2024-10-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
675 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
603 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
-8 m²/s²
0-3 km storm-relative helicity
26 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 26, 3:54 AM HSTAreal Flood AdvisoryHFOHonolulu3 hr
Oct 26, 5:12 AM HSTAreal Flood AdvisoryHFOKalawao86 min
Oct 26, 6:38 AM HSTFlash Flood WarningHFOKalawao3 hr
Oct 26, 6:40 AM HSTFlash Flood WarningHFOHonolulu6 hr
Oct 26, 7:30 AM HSTFlood WatchHFOHawaii, Honolulu, Kauai, Kalawao61 hr
Oct 26, 1:07 PM HSTAreal Flood AdvisoryHFOKauai3 hr
Oct 26, 1:12 PM HSTAreal Flood AdvisoryHFOHonolulu3 hr
Oct 26, 1:27 PM HSTAreal Flood AdvisoryHFOKalawao72 min
Oct 26, 1:28 PM HSTAreal Flood AdvisoryHFOHawaii4 hr

Nearby

Flash Flood Warnings in Hawaii, 2024Every flash flood warning in 2024

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.