Alert archive / Hawaii / Flash Flood Warnings in 2021

Flash Flood Warning 17, NWS Honolulu, HI

March 9, 2021Kauai County, Hawaii

NWS Honolulu, HI issued this flash flood warning at Mar 9, 2021, 4:30 PM HST for Kauai County, Hawaii. It was in force for 17 hr. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Mar 9, 2021, 4:30 PM HST (02:30 UTC)
Expired: Mar 10, 2021, 9:11 AM HST
In force: 17 hr
Issued by: NWS Honolulu, HI
Area: Storm-based polygon
Flood severity: None

County Kauai County, HI

The radar

The South Kauai radar (PHKI), 23 km from the middle of the area, began a volume at 02:30 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.

What was reported inside it

Time	Report	Where	Remark
Mar 9, 5:22 PM HST	FLASH FLOOD	1 Se Princeville, HI	HANALEI BRIDGE IS CLOSED ON KUHIO HIGHWAY.
Mar 9, 5:22 PM HST	FLASH FLOOD	Wainiha, HI	ALAMIHI ROAD IN WAINIHA IS FLOODED.
Mar 9, 8:00 PM HST	FLASH FLOOD	2 Ssw Lihue, HI	FLOODING REPORTED ON NIUMALU ROAD IN THE VICINITY OF HULEMALU ROAD.
Mar 9, 10:00 PM HST	FLASH FLOOD	1 Wnw Kilauea, HI	EXTENSIVE FLOODING ALONG KALIHIWAI ROAD.
Mar 10, 6:20 AM HST	FLASH FLOOD	Kapaa, HI	KEAPANA BRIDGE IS IMPASSIBLE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lihue, (PHLI), launched 00:00Z, 2.5 hours before the alert went out and 17 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: 295 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 704 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

022 
WGHW50 PHFO 100230
FFWHFO
HIC007-100445-
/O.NEW.PHFO.FF.W.0017.210310T0230Z-210310T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Honolulu HI
430 PM HST Tue Mar 9 2021

The National Weather Service in Honolulu has issued a

* Flash Flood Warning for...
  The island of Kauai in Kauai County

* Until 645 PM HST.

* At 430 PM HST, radar indicated heavy rain over the island of 
  Kauai. Rain was falling at a rate of 1.5 to 2.5 inches per hour. 
  Flash flooding is occurring or expected to begin shortly. The gage 
  on the Hanalei River shows the water level rising rapidly and the 
  water is expected to reach the road near the Hanalei Bridge soon.

  HAZARD...Flash flooding caused by heavy rain.

  SOURCE...Radar indicated.

  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...
  Lihue, Kapaa, Kalaheo, Kekaha, Princeville, Kilauea, North Fork 
  Wailua Trails, Alakai Swamp Trails, Lawai, Omao, Kokee State Park, 
  Wailua Homesteads, Hanalei, Hanapepe, Wainiha, Na Pali State Park, 
  Koloa, Haena, Waimea and Wailua.

This warning may need to be extended beyond 645 PM HST if flooding 
persists.

This Flash Flood Warning replaces the previously issued Flood 
Advisory that was in effect for The island of Kauai in Kauai County.

LAT...LON 2222 15933 2216 15930 2215 15928 2205 15932
      2196 15932 2195 15934 2193 15934 2186 15944
      2188 15962 2194 15968 2198 15978 2206 15980
      2216 15974 2224 15958 2222 15952 2225 15949
      2224 15943 2225 15940

FLASH FLOOD...RADAR INDICATED

$$

DONALDSON

9 follow-up statements

842 
WGHW70 PHFO 100326
FFSHFO

Flash Flood Statement
National Weather Service Honolulu HI
526 PM HST Tue Mar 9 2021

HIC007-100445-
/O.CON.PHFO.FF.W.0017.000000T0000Z-210310T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kauai HI-
526 PM HST Tue Mar 9 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM HST THIS 
EVENING FOR THE ISLAND OF KAUAI IN KAUAI COUNTY...

At 526 PM HST, radar indicated heavy rain over the island of Kauai. 
Rain was falling at a rate of 1.5 to 2.5 inches per hour. Flash 
flooding is already occurring. Emergency management officials on 
Kauai report Kuhio Highway is closed near the Hanalei Bridge and 
flooding has closed Alamihi Road in Wainiha.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Radar indicated.

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...
  Lihue, Kapaa, Kalaheo, Kekaha, Princeville, Kilauea, North Fork 
  Wailua Trails, Alakai Swamp Trails, Lawai, Omao, Kokee State Park, 
  Wailua Homesteads, Hanalei, Hanapepe, Wainiha, Na Pali State Park, 
  Koloa, Haena, Waimea and Wailua.

This warning may need to be extended beyond 645 PM HST if flooding 
persists.

LAT...LON 2222 15933 2216 15930 2215 15928 2205 15932
      2196 15932 2195 15934 2193 15934 2186 15944
      2188 15962 2194 15968 2198 15978 2206 15980
      2216 15974 2224 15958 2222 15952 2225 15949
      2224 15943 2225 15940

FLASH FLOOD...RADAR INDICATED

$$

DONALDSON

673 
WGHW50 PHFO 100430
FFWHFO
HIC007-100745-
/O.EXT.PHFO.FF.W.0017.000000T0000Z-210310T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Honolulu HI
630 PM HST Tue Mar 9 2021

The National Weather Service in Honolulu has extended the

* Flash Flood Warning for...
  The island of Kauai in Kauai County

* Until 945 PM HST.

* At 630 PM HST, emergency management reported that Kuhio Highway 
  remains closed at the Hanalei Bridge. Some homes have been flooded 
  on Alamihi Road in Wainiha. Additional rainfall has continued to 
  move over Kauai from the southeast with rates of 1 to 2 inches per 
  hour.

  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...
  Lihue, Kapaa, Kalaheo, Kekaha, Princeville, Kilauea, North Fork 
  Wailua Trails, Alakai Swamp Trails, Lawai, Omao, Kokee State Park, 
  Wailua Homesteads, Hanalei, Hanapepe, Wainiha, Na Pali State Park, 
  Koloa, Haena, Waimea and Wailua.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

The heavy rains may cause rock and mudslides in steep terrain areas.

&&

This warning may need to be extended beyond 945 PM HST if flooding 
persists.

LAT...LON 2222 15933 2216 15930 2215 15928 2205 15932
      2196 15932 2195 15934 2193 15934 2186 15944
      2188 15962 2194 15968 2198 15978 2206 15980
      2216 15974 2224 15958 2222 15952 2225 15949
      2224 15943 2225 15940

FLASH FLOOD...OBSERVED

$$

KODAMA

316 
WGHW50 PHFO 100735
FFWHFO
HIC007-101045-
/O.EXT.PHFO.FF.W.0017.000000T0000Z-210310T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Honolulu HI
935 PM HST Tue Mar 9 2021

The National Weather Service in Honolulu has extended the

* Flash Flood Warning for...
  The island of Kauai in Kauai County

* Until 1245 AM HST.

* At 935 PM HST, emergency management reported that Kuhio Highway 
  remains closed at the Hanalei Bridge with some homes flooded in 
  Wainiha. Rivers and streams continue to run high as well. 
  Additional rainfall continues to develop and move over Kauai from 
  the southeast with rates of 1 to 2 inches per hour.

  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...
  Lihue, Kapaa, Kalaheo, Kekaha, Princeville, Kilauea, North Fork 
  Wailua Trails, Alakai Swamp Trails, Lawai, Omao, Kokee State Park, 
  Wailua Homesteads, Hanalei, Hanapepe, Wainiha, Na Pali State Park, 
  Koloa, Haena, Waimea and Wailua.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

The heavy rains may cause rock and mudslides in steep terrain areas.

&&

This warning may need to be extended beyond 1245 AM HST if flooding 
persists.

LAT...LON 2222 15933 2216 15930 2215 15928 2205 15932
      2196 15932 2195 15934 2193 15934 2186 15944
      2188 15962 2194 15968 2198 15978 2206 15980
      2216 15974 2224 15958 2222 15952 2225 15949
      2224 15943 2225 15940

FLASH FLOOD...OBSERVED

$$

TS

423 
WGHW50 PHFO 101032
FFWHFO
HIC007-101345-
/O.EXT.PHFO.FF.W.0017.000000T0000Z-210310T1345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Honolulu HI
1232 AM HST Wed Mar 10 2021

The National Weather Service in Honolulu has extended the

* Flash Flood Warning for...
  The island of Kauai in Kauai County

* Until 345 AM HST.

* At 1232 AM HST, water levels at the Hanalei River Bridge stream 
  gage are still elevated, and Kuhio Highway remains closed at the 
  Hanalei Bridge. Additional rainfall continues to develop and move 
  over Kauai from the southeast with rates of up to 2 inches per 
  hour.

  HAZARD...Flash flooding caused by heavy rain.

  SOURCE...Stream Gauges.

  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...
  Lihue, Kapaa, Kalaheo, Kekaha, Princeville, Kilauea, North Fork 
  Wailua Trails, Alakai Swamp Trails, Lawai, Omao, Kokee State Park, 
  Wailua Homesteads, Hanalei, Hanapepe, Wainiha, Na Pali State Park, 
  Koloa, Haena, Waimea and Wailua.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

The heavy rains may cause rock and mudslides in steep terrain areas.

&&

This warning may need to be extended beyond 345 AM HST if flooding 
persists.

LAT...LON 2222 15933 2216 15930 2215 15928 2205 15932
      2196 15932 2195 15934 2193 15934 2186 15944
      2188 15962 2194 15968 2198 15978 2206 15980
      2216 15974 2224 15958 2222 15952 2225 15949
      2224 15943 2225 15940

FLASH FLOOD...GAUGE INDICATED

$$

TS

906 
WGHW50 PHFO 101330
FFWHFO
HIC007-101645-
/O.EXT.PHFO.FF.W.0017.000000T0000Z-210310T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Honolulu HI
330 AM HST Wed Mar 10 2021

The National Weather Service in Honolulu has extended the

* Flash Flood Warning for...
  The island of Kauai in Kauai County

* Until 645 AM HST.

* At 330 AM HST, radar indicated periods of heavy showers continue 
  to develop and move over Kauai from the south. Recent heavy 
  rainfall has caused another sharp rise in the stream gages at 
  Hanalei River and the South Fork of the Wailua River. Kuhio 
  Highway remains closed at the Hanalei Bridge.

  HAZARD...Flash flooding caused by heavy rain.

  SOURCE...Radar and automated gauges.

  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...
  Lihue, Kapaa, Kalaheo, Kekaha, Princeville, Kilauea, North Fork 
  Wailua Trails, Alakai Swamp Trails, Lawai, Omao, Kokee State Park, 
  Wailua Homesteads, Hanalei, Hanapepe, Wainiha, Na Pali State Park, 
  Koloa, Haena, Waimea and Wailua.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

The heavy rains may cause rock and mudslides in steep terrain areas.

&&

This warning may need to be extended beyond 645 AM HST if flooding 
persists.

LAT...LON 2222 15933 2216 15930 2215 15928 2205 15932
      2196 15932 2195 15934 2193 15934 2186 15944
      2188 15962 2194 15968 2198 15978 2206 15980
      2216 15974 2224 15958 2222 15952 2225 15949
      2224 15943 2225 15940

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

TS

403 
WGHW50 PHFO 101620
FFWHFO
HIC007-101945-
/O.EXT.PHFO.FF.W.0017.000000T0000Z-210310T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Honolulu HI
620 AM HST Wed Mar 10 2021

The National Weather Service in Honolulu has extended the

* Flash Flood Warning for...
  The island of Kauai in Kauai County

* Until 945 AM HST.

* At 620 AM HST, radar indicated periods of heavy showers continue 
  to develop and move over Kauai from the south. Rain was falling at 
  rates up to 2 inches per hour in the heaviest showers. Kuhio 
  Highway remains closed at the Hanalei Bridge, and the Keapana 
  Bridge is impassable. Stream levels remain elevated across the 
  island.

  HAZARD...Flash flooding caused by heavy rain.

  SOURCE...Radar and automated gauges.

  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.

* This warning is for the entire island of Kauai. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

The heavy rains may cause rock and mudslides in steep terrain areas.

&&

This warning may need to be extended beyond 945 AM HST if flooding 
persists.

LAT...LON 2222 15933 2216 15930 2215 15928 2205 15932
      2196 15932 2195 15934 2193 15934 2186 15944
      2188 15962 2194 15968 2198 15978 2206 15980
      2216 15974 2224 15958 2222 15952 2225 15949
      2224 15943 2225 15940

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

M BALLARD

946 
WGHW70 PHFO 101702
FFSHFO

Flash Flood Statement
National Weather Service Honolulu HI
702 AM HST Wed Mar 10 2021

HIC007-101945-
/O.CON.PHFO.FF.W.0017.000000T0000Z-210310T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kauai HI-
702 AM HST Wed Mar 10 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 AM HST THIS 
MORNING FOR THE ISLAND OF KAUAI IN KAUAI COUNTY...

At 702 AM HST, radar indicated periods of heavy showers continue to 
develop and move over Kauai from the south. Additional heavy showers 
have formed over the eastern side of the island with rainfall rates 
up to 3 inches per hour. Kuhio Highway remains closed at the Hanalei 
Bridge, and the Keapana Bridge is impassable. Stream levels remain 
elevated across the island and are likely to rise with additional 
rain.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Radar and automated gauges.

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.

This warning is for the entire island of Kauai. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

The heavy rains may cause rock and mudslides in steep terrain areas.

&&

This warning may need to be extended beyond 945 AM HST if flooding 
persists.

LAT...LON 2222 15933 2216 15930 2215 15928 2205 15932
      2196 15932 2195 15934 2193 15934 2186 15944
      2188 15962 2194 15968 2198 15978 2206 15980
      2216 15974 2224 15958 2222 15952 2225 15949
      2224 15943 2225 15940

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

M BALLARD

386 
WGHW70 PHFO 101807
FFSHFO

Flash Flood Statement
National Weather Service Honolulu HI
807 AM HST Wed Mar 10 2021

HIC007-101945-
/O.CON.PHFO.FF.W.0017.000000T0000Z-210310T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kauai HI-
807 AM HST Wed Mar 10 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 AM HST THIS 
MORNING FOR THE ISLAND OF KAUAI IN KAUAI COUNTY...

At 807 AM HST, radar indicated periods of heavy showers continue to 
develop and move over Kauai from the south. Showers have developed 
over the western half of the island, and over the eastern side over 
the slopes from Kapaa to Kilauea.  The heaviest showers have 
rainfall rates up to 3 inches per hour. Kuhio Highway remains closed 
at the Hanalei Bridge, the Keapana Bridge is impassable, and a 
mudslide on Anini Road is blocking one lane of traffic. Stream 
levels remain elevated across the island and are likely to rise with 
additional rain.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Radar and automated gauges.

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...
  Lihue, Kapaa, Kalaheo, Kekaha, Princeville, Kilauea, North Fork 
  Wailua Trails, Alakai Swamp Trails, Lawai, Omao, Kokee State Park, 
  Wailua Homesteads, Hanalei, Hanapepe, Wainiha, Na Pali State Park, 
  Koloa, Haena, Waimea and Wailua.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

The heavy rains may cause rock and mudslides in steep terrain areas.

&&

This warning may need to be extended beyond 945 AM HST if flooding 
persists.

LAT...LON 2222 15933 2216 15930 2215 15928 2205 15932
      2196 15932 2195 15934 2193 15934 2186 15944
      2188 15962 2194 15968 2198 15978 2206 15980
      2216 15974 2224 15958 2222 15952 2225 15949
      2224 15943 2225 15940

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

M BALLARD

338 
WGHW70 PHFO 101911
FFSHFO

Flash Flood Statement
National Weather Service Honolulu HI
911 AM HST Wed Mar 10 2021

HIC007-101921-
/O.CAN.PHFO.FF.W.0017.000000T0000Z-210310T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kauai HI-
911 AM HST Wed Mar 10 2021

...FLASH FLOOD WARNING FOR THE ISLAND OF KAUAI IN KAUAI COUNTY HAS 
BEEN REPLACED WITH A FLOOD ADVISORY...

LAT...LON 2222 15933 2216 15930 2215 15928 2205 15932
      2196 15932 2195 15934 2193 15934 2186 15944
      2188 15962 2194 15968 2198 15978 2206 15980
      2216 15974 2224 15958 2222 15952 2225 15949
      2224 15943 2225 15940

$$

M BALLARD

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 9, 2:15 PM HST	Special Marine Warning	HFO		30 min
Mar 9, 2:21 PM HST	Special Weather Statement	HFO	Kauai	39 min
Mar 9, 2:44 PM HST	Special Marine Warning	HFO		46 min
Mar 9, 3:08 PM HST	Special Weather Statement	HFO	Kauai	37 min
Mar 9, 3:17 PM HST	Special Marine Warning	HFO		88 min
Mar 9, 3:21 PM HST	Flash Flood Warning EmergencyConsiderable damage threat	HFO	Honolulu	9 hr
Mar 9, 3:24 PM HST	Special Marine Warning	HFO		64 min
Mar 9, 3:47 PM HST	Areal Flood Advisory	HFO	Kauai	43 min
Mar 9, 4:18 PM HST	Special Weather Statement	HFO	Kauai	57 min
Mar 9, 8:33 PM HST	Special Marine Warning	HFO		87 min
Mar 9, 10:44 PM HST	Special Marine Warning	HFO		2 hr
Mar 9, 10:56 PM HST	Areal Flood Advisory	HFO	Kalawao	3 hr
Mar 9, 11:03 PM HST	Special Marine Warning	HFO		93 min
Mar 9, 11:16 PM HST	Special Marine Warning	HFO		76 min
Mar 10, 12:45 AM HST	Special Marine Warning	HFO		105 min
Mar 10, 1:02 AM HST	Areal Flood Advisory	HFO	Hawaii	4 hr
Mar 10, 2:20 AM HST	Special Marine Warning	HFO		115 min
Mar 10, 3:42 AM HST	Special Marine Warning	HFO		2 hr
Mar 10, 4:43 AM HST	Special Marine Warning	HFO		2 hr
Mar 10, 5:26 AM HST	Flash Flood Warning	HFO	Hawaii	3 hr
Mar 10, 5:47 AM HST	Special Marine Warning	HFO		118 min
Mar 10, 6:36 AM HST	Flash Flood Warning	HFO	Hawaii	3 hr
Mar 10, 7:43 AM HST	Special Marine Warning	HFO		107 min
Mar 10, 9:06 AM HST	Areal Flood Advisory	HFO	Hawaii	115 min
Mar 10, 9:11 AM HST	Areal Flood Advisory	HFO	Kauai	9 hr
Mar 10, 9:17 AM HST	Special Marine Warning	HFO		118 min
Mar 10, 10:11 AM HST	High Surf Advisory	HFO	Honolulu, Kalawao	29 hr
Mar 10, 11:11 AM HST	Special Marine Warning	HFO		2 hr
Mar 10, 1:09 PM HST	Areal Flood Advisory	HFO	Honolulu	36 min
Mar 10, 1:10 PM HST	Special Marine Warning	HFO		110 min
Mar 10, 1:45 PM HST	Flash Flood Warning	HFO	Honolulu	3 hr

Nearby

Flash Flood Warnings in Hawaii, 2021 Every flash flood warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.