Alert archive / Hawaii / Flash Flood Warnings in 2026

Flash Flood Warning 8, NWS Honolulu, HI

March 13, 2026Honolulu County, Hawaii

NWS Honolulu, HI issued this flash flood warning at Mar 13, 2026, 12:22 PM HST for Honolulu County, Hawaii. It was in force for 16 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: Mar 13, 2026, 12:22 PM HST (22:22 UTC)
Expired: Mar 14, 2026, 4:00 AM HST
In force: 16 hr
Issued by: NWS Honolulu, HI
Area: Storm-based polygon
Flood severity: None

County Honolulu County, HI

The nearest sounding before it

Hilo, (PITO), launched 12:00Z, 10.4 hours before the alert went out and 364 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: 26 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 851 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 171 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 Mar 13, 8:58 AM HST, 3 hours 24 minutes earlier.

Area forecast discussion, Mar 13, 8:58 AM HST, 3 hours 24 minutes before

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In the hours before

Local storm report, Mar 13, 11:34 AM HST, 48 minutes before

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Local storm report, Mar 13, 11:36 AM HST, 46 minutes before

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Local storm report, Mar 13, 11:36 AM HST, 46 minutes before

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Local storm report, Mar 13, 11:52 AM HST, 30 minutes before

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Local storm report, Mar 13, 12:10 PM HST, 12 minutes before

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Local storm report, Mar 13, 12:15 PM HST, 7 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
Mar 12, 2:36 PM HST	Winter Storm Warning	HFO	Hawaii	67 hr
Mar 12, 2:50 PM HST	High Wind Warning	HFO	Hawaii, Honolulu, Kauai, Kalawao	4 days
Mar 12, 2:54 PM HST	Gale Watch	HFO		22 hr
Mar 12, 2:54 PM HST	Gale Warning	HFO		61 hr
Mar 12, 4:20 PM HST	Areal Flood Advisory	HFO	Kauai	20 hr
Mar 13, 2:04 AM HST	Areal Flood Advisory	HFO	Honolulu	11 hr
Mar 13, 2:15 AM HST	Wind Advisory	HFO	Hawaii	11 hr
Mar 13, 6:42 AM HST	Special Marine Warning	HFO		2 hr
Mar 13, 6:46 AM HST	Areal Flood Advisory	HFO	Kalawao	4 hr
Mar 13, 6:48 AM HST	Special Marine Warning	HFO		54 min
Mar 13, 6:50 AM HST	Areal Flood Advisory	HFO	Kalawao	6 hr
Mar 13, 8:40 AM HST	Special Marine Warning	HFO		2 hr
Mar 13, 10:20 AM HST	Special Marine Warning	HFO		115 min
Mar 13, 11:12 AM HST	Areal Flood Advisory	HFO	Hawaii	7 hr
Mar 13, 11:26 AM HST	Special Marine Warning	HFO		110 min
Mar 13, 12:08 PM HST	Special Marine Warning	HFO		2 hr

Nearby

Flash Flood Warnings in Hawaii, 2026 Every flash flood warning in 2026

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.