Alert archive / Hawaii / Flash Flood Warnings in 2026
Flash Flood Warning 19, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at Mar 20, 2026, 10:37 AM HST for Honolulu County, Hawaii. It was in force for 19 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 20, 2026, 10:37 AM HST (20:37 UTC)
- Expired
- Mar 21, 2026, 6:00 AM HST
- In force
- 19 hr
- Issued by
- NWS Honolulu, HI
- Area
- Storm-based polygon
- Flood severity
- None
County Honolulu County, HI
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 19, 6:05 PM HST | Areal Flood Advisory | HFO | Honolulu | 8 hr |
| Mar 19, 10:57 PM HST | Flash Flood Warning | HFO | Honolulu | 30 hr |
| Mar 20, 5:00 AM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Mar 20, 8:00 AM HST | Areal Flood Advisory | HFO | Honolulu | 3 hr |
| Mar 20, 8:22 AM HST | Flash Flood Warning | HFO | Honolulu | 29 hr |
| Mar 20, 11:30 AM HST | Areal Flood Advisory | HFO | Kalawao | 6 hr |
| Mar 20, 1:28 PM HST | Areal Flood Advisory | HFO | Kalawao | 9 hr |
Nearby
Flash Flood Warnings in Hawaii, 2026Every 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.