Headline:
Flash Flood Warning issued March 21 at 2:45AM HST until March 21 at 6:00AM HST by NWS Honolulu HI
Event:
Flash Flood Warning
Urgency:
Immediate
Effective:
March 21, 2026 - 5:45am
Expires:
March 21, 2026 - 9:00am
Description:
FFWHFO
The National Weather Service in Honolulu has extended the
* Flash Flood Warning for...
The island of Oahu in Honolulu County
* Until 600 AM HST.
* At 245 AM HST, emergency management reported closed roads on the
windward side of the island due to Friday's flooding. Latest radar
depicts light showers, however additional bands of moderate to
potentially locally heavy showers may move in from the south
during the early morning hours.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Emergency management.
IMPACT...Flooding in drainages, streams, rivers, roads,
properties, and other low-lying areas. Public road
closures possible in some areas. Landslides are
possible in steep terrain.
* Some locations that will experience flash flooding include...
Honolulu, Waipio, Moanalua, Halawa, Salt Lake, Aiea, Kalihi, Pearl
City, Ahuimanu, Iroquois Point, Manoa, Kahaluu, Kaneohe, Waiahole,
Waipahu, Waikele, Palolo, Maunawili, Waikane and Ewa Beach.
Instruction:
Stay away from streams, rivers, drainage ditches, and culverts, even
if they are currently dry.
Do not cross fast flowing or rising water in your vehicle, or on
foot. Turn around, don't drown.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall will cause flooding of drainage
ditches and streams, streets, highways, properties, and other low
lying spots.
Area Description:
Oahu in Honolulu, HI
Forcast Office:
NWS Honolulu HI
Sender:
w-nws.webmaster@noaa.gov