Ashfall Warning
URGENT - WEATHER MESSAGE
National Weather Service Honolulu HI
1129 AM HST Tue Mar 10 2026
HIZ052-053-110300-
/O.CON.PHFO.AF.W.0002.000000T0000Z-260311T0300Z/
Big Island Southeast-Big Island East-
1129 AM HST Tue Mar 10 2026
...ASHFALL WARNING REMAINS IN EFFECT UNTIL 5 PM THIS AFTERNOON FOR
HAWAII VOLCANOES NATIONAL PARK AND AREAS TO THE NORTHEAST INCLUDING
MOUNTAIN VIEW, VOLCANO, AND GLENWOOD, AND EXTENDING TO THE SOUTHEAST
AND SOUTHWEST...
* WHAT...A significant eruption is occurring at Kilauea with more
than quarter inch of ashfall accumulation for Hawaii Volcanoes
National Park and areas to the northeast including Mountain View,
Volcano, and Glenwood, and extending to the southeast and
southwest.
* WHERE...Hawaii Volcanoes National Park and areas to the northeast
including Mountain View, Volcano, and Glenwood, and extending to
the southeast and southwest.
* WHEN...Until 5 PM this afternoon.
* IMPACTS...Disruption of services and utilities (water, sewer,
electric) possible. Ash removal efforts significant.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seal windows and doors. Protect electronics and cover air intakes
and open water sources. Avoid driving. Remain indoors unless
absolutely necessary. Use extreme caution clearing rooftops of ash.
Listen to further announcements.
&&
Submit your reports and photos of ashfall from volcanic eruptions to
the USGS Hawaiian Volcano Observatory at:
Hawaiiash.science/report_form
$$
M BALLARD
Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
908 AM HST Tue Mar 10 2026
PHZ110>112-110815-
/O.EXT.PHFO.SC.Y.0014.000000T0000Z-260312T0400Z/
Kauai Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters-
908 AM HST Tue Mar 10 2026
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM HST WEDNESDAY...
* WHAT...South winds 15 to 25 kt.
* WHERE...Kauai Northwest Waters, Kauai Windward Waters and
Kauai Leeward Waters.
* WHEN...Until 6 PM HST Wednesday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Honolulu HI
908 AM HST Tue Mar 10 2026
PHZ113-110815-
/O.EXB.PHFO.SC.Y.0014.260311T0400Z-260312T0400Z/
Kauai Channel-
908 AM HST Tue Mar 10 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 PM
HST WEDNESDAY...
* WHAT...South winds 20 to 25 kt.
* WHERE...Kauai Channel.
* WHEN...From 6 PM this evening to 6 PM HST Wednesday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.
&&
$$
Flood Watch
Flood Watch
National Weather Service Honolulu HI
307 AM HST Tue Mar 10 2026
...FLOOD WATCH IN EFFECT FOR NIIHAU AND KAUAI TODAY...
...FLOOD WATCH IN EFFECT FOR OAHU BEGINNING TONIGHT...
...FLOOD WATCH IN EFFECT FOR MAUI COUNTY BEGINNING WEDNESDAY
MORNING...
...FLOOD WATCH IN EFFECT FOR THE BIG ISLAND BEGINNING WEDNESDAY
EVENING...
HIZ001-003-004-029>031-110315-
/O.CON.PHFO.FA.A.0005.260310T1600Z-260315T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Niihau-Kauai Southwest-Kauai Mountains-Kauai North-Kauai East-
Kauai South-
307 AM HST Tue Mar 10 2026
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...Niihau and Kauai.
* WHEN...From 6 AM HST this morning through Saturday afternoon.
* IMPACTS...Significant flooding may occur due to the overflow of
streams and drainages. Roads in several areas may be closed, along
with property damage in urban or low lying spots due to runoff.
Landslides may also occur in areas with steep terrain.
* ADDITIONAL DETAILS...
- Considerable flash flooding is possible beginning this
morning as a large and powerful kona storm develops northwest
of the state and draws deep tropical moisture across the
islands. Persistent bands of heavy rain and thunderstorms may
produce intense rainfall rates, leading to rapid rises in
streams and flooding of roads and low-lying areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
Flood Watch
National Weather Service Honolulu HI
307 AM HST Tue Mar 10 2026
...FLOOD WATCH IN EFFECT FOR NIIHAU AND KAUAI TODAY...
...FLOOD WATCH IN EFFECT FOR OAHU BEGINNING TONIGHT...
...FLOOD WATCH IN EFFECT FOR MAUI COUNTY BEGINNING WEDNESDAY
MORNING...
...FLOOD WATCH IN EFFECT FOR THE BIG ISLAND BEGINNING WEDNESDAY
EVENING...
HIZ006-007-009>011-032>036-110315-
/O.CON.PHFO.FA.A.0005.260311T0400Z-260315T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Waianae Coast-Oahu North Shore-Olomana-Central Oahu-Waianae
Mountains-East Honolulu-Honolulu Metro-Ewa Plain-Koolau Windward-
Koolau Leeward-
307 AM HST Tue Mar 10 2026
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...Oahu.
* WHEN...From this evening through Saturday afternoon.
* IMPACTS...Significant flooding may occur due to the overflow of
streams and drainages. Roads in several areas may be closed, along
with property damage in urban or low lying spots due to runoff.
Landslides may also occur in areas with steep terrain.
* ADDITIONAL DETAILS...
- Considerable flash flooding is possible beginning this
evening as a large and powerful kona storm develops northwest
of the state and draws deep tropical moisture across the
islands. Persistent bands of heavy rain and thunderstorms may
produce intense rainfall rates, leading to rapid rises in
streams and flooding of roads and low-lying areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
Flood Watch
National Weather Service Honolulu HI
307 AM HST Tue Mar 10 2026
...FLOOD WATCH IN EFFECT FOR NIIHAU AND KAUAI TODAY...
...FLOOD WATCH IN EFFECT FOR OAHU BEGINNING TONIGHT...
...FLOOD WATCH IN EFFECT FOR MAUI COUNTY BEGINNING WEDNESDAY
MORNING...
...FLOOD WATCH IN EFFECT FOR THE BIG ISLAND BEGINNING WEDNESDAY
EVENING...
HIZ015>018-022-037>050-110315-
/O.CON.PHFO.FA.A.0005.260311T1600Z-260315T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lanai Mauka-Kahoolawe-Maui Windward West-Maui Leeward West-
Haleakala Summit-Molokai Windward-Molokai Southeast-Molokai North-
Molokai West-Molokai Leeward South-Lanai Windward-Lanai Leeward-
Lanai South-Maui Central Valley North-Maui Central Valley South-
Windward Haleakala-Kipahulu-South Maui/Upcountry-South Haleakala-
307 AM HST Tue Mar 10 2026
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...Maui, Molokai, Lanai, and Kahoolawe.
* WHEN...From Wednesday morning through Saturday afternoon.
* IMPACTS...Significant flooding may occur due to the overflow of
streams and drainages. Roads in several areas may be closed, along
with property damage in urban or low lying spots due to runoff.
Landslides may also occur in areas with steep terrain.
* ADDITIONAL DETAILS...
- Considerable flash flooding is possible beginning early
Wednesday as a large and powerful kona storm develops
northwest of the state and draws deep tropical moisture
across the islands. Persistent bands of heavy rain and
thunderstorms may produce intense rainfall rates, leading to
rapid rises in streams and flooding of roads and low-lying
areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
Tsamous
Flood Watch
National Weather Service Honolulu HI
307 AM HST Tue Mar 10 2026
...FLOOD WATCH IN EFFECT FOR NIIHAU AND KAUAI TODAY...
...FLOOD WATCH IN EFFECT FOR OAHU BEGINNING TONIGHT...
...FLOOD WATCH IN EFFECT FOR MAUI COUNTY BEGINNING WEDNESDAY
MORNING...
...FLOOD WATCH IN EFFECT FOR THE BIG ISLAND BEGINNING WEDNESDAY
EVENING...
HIZ023-026-027-051>054-110315-
/O.EXB.PHFO.FA.A.0005.260312T0400Z-260315T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kona-Kohala-Big Island Interior-Big Island South-Big Island
Southeast-Big Island East-Big Island North-
307 AM HST Tue Mar 10 2026
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...The Big Island lower elevations.
* WHEN...From Wednesday evening through Saturday afternoon.
* IMPACTS...Significant flooding may occur due to the overflow of
streams and drainages. Roads in several areas may be closed, along
with property damage in urban or low lying spots due to runoff.
Landslides may also occur in areas with steep terrain.
* ADDITIONAL DETAILS...
- Considerable flash flooding is possible beginning late
Wednesday as a large and powerful kona storm develops
northwest of the state and draws deep tropical moisture
across the islands. Persistent bands of heavy rain and
thunderstorms may produce intense rainfall rates, leading to
rapid rises in streams and flooding of roads and low-lying
areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
Special Weather Statement
Special Weather Statement
National Weather Service Honolulu HI
315 AM HST Tue Mar 10 2026
HIZ001-003-004-006-007-009>011-015>018-022-023-026>054-110215-
Niihau-Kauai Southwest-Kauai Mountains-Waianae Coast-
Oahu North Shore-Olomana-Central Oahu-Waianae Mountains-
Lanai Mauka-Kahoolawe-Maui Windward West-Maui Leeward West-
Haleakala Summit-Kona-Kohala-Big Island Interior-
Big Island Summits-Kauai North-Kauai East-Kauai South-
East Honolulu-Honolulu Metro-Ewa Plain-Koolau Windward-
Koolau Leeward-Molokai Windward-Molokai Southeast-Molokai North-
Molokai West-Molokai Leeward South-Lanai Windward-Lanai Leeward-
Lanai South-Maui Central Valley North-Maui Central Valley South-
Windward Haleakala-Kipahulu-South Maui/Upcountry-South Haleakala-
Big Island South-Big Island Southeast-Big Island East-
Big Island North-
315 AM HST Tue Mar 10 2026
...POWERFUL KONA STORM TO IMPACT THE STATE THIS WEEK...
A powerful kona storm will begin impacting the western end of the
state today, then spread across the remainder of the smaller
islands by midweek and the Big Island towards the end of the week.
While flash flooding remains a major concern (see the Flood Watch
for additional details), confidence is increasing that strong to
severe thunderstorms may develop Wednesday into the weekend.
Damaging winds will likely be the primary hazard with these
storms, though large hail cannot be ruled out.
In addition to the heavy rainfall and severe thunderstorm threat,
strong and potentially damaging kona winds are possible late in
the week and into the weekend.
$$
