Alert archive / Hawaii / Flash Flood Warnings in 2012
Flash Flood Warning 1, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at Jan 17, 2012, 10:29 AM HST for Kauai County, Hawaii. It was in force for 5 hr. 2 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
- Jan 17, 2012, 10:29 AM HST (20:29 UTC)
- Expired
- Jan 17, 2012, 3:30 PM HST
- In force
- 5 hr
- Issued by
- NWS Honolulu, HI
- Area
- Storm-based polygon
- Flood severity
- None
County Kauai County, HI
The radar
The South Kauai radar (PHKI), 25 km from the middle of the area, began a volume at 20:32 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 |
|---|---|---|---|
| Jan 17, 12:10 PM HST | FLASH FLOOD | Hanalei, HI | KAUAI CIVIL DEFENSE REPORTS THAT THE ROAD AT THE HANALEI BRIDGE IS CLOSED DUE TO FLOODING. |
| Jan 17, 3:15 PM HST | FLASH FLOOD | 1 Nne Kapaa, HI | KAUAI CIVIL DEFENSE REPORTS ROAD CLOSED DUE TO FLOODING IN KEAPANA VALLEY. |
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 12:00Z, 8.5 hours before the alert went out and 31 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.
- Mixed-layer CAPE
- 1786 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 503 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 194 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 4.6
The text
As transmitted, in the capitals the NWS used until 2016.
642 WGHW50 PHFO 172029 FFWHFO HIC007-172330- /O.NEW.PHFO.FF.W.0001.120117T2029Z-120117T2330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HONOLULU HI 1029 AM HST TUE JAN 17 2012 THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A * FLASH FLOOD WARNING FOR... THE ISLAND OF KAUAI IN KAUAI COUNTY * UNTIL 130 PM HST * AT 1017 AM HST...RADAR SHOWED A BAND OF HEAVY RAIN MOVING OVER THE ISLAND OF KAUAI FROM THE SOUTHWEST. RUNOFF FROM HEAVY RAINS WILL CAUSE STREAMS TO RISE RAPIDLY. THE HANALEI RIVER GAGE IS CURRENTLY SHOWING A RAPID RISE...AND IS EXPECTED TO INCREASE ABOVE 7.5 FEET...WHICH INDICATES FLOODING. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HAENA...WAINIHA...NA PALI STATE PARK...MOLOAA...KALALAU VALLEY... PRINCEVILLE...KILAUEA...KAPAA...HANALEI AND ANAHOLA. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW. DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT. TURN AROUND...DON/T DROWN. && THIS FLASH FLOOD WARNING REPLACES THE FLOOD ADVISORY THAT WAS IN EFFECT FOR THE ISLAND OF KAUAI IN KAUAI COUNTY. THIS WARNING MAY NEED TO BE EXTENDED BEYOND 130 PM HST IF FLASH FLOODING PERSISTS. LAT...LON 2228 15977 2225 15925 2186 15946 2188 15986 $$ BRENCHLEY
2 follow-up statements
259 WGHW70 PHFO 172213 FFSHFO FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HONOLULU HI 1213 PM HST TUE JAN 17 2012 HIC007-172330- /O.CON.PHFO.FF.W.0001.000000T0000Z-120117T2330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KAUAI HI- 1213 PM HST TUE JAN 17 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF KAUAI IN KAUAI COUNTY UNTIL 130 PM HST... AT 1205 PM...CIVIL DEFENSE ON KAUAI HAS REPORTED THAT THE ROAD AT THE HANALEI BRIDGE HAS BEEN CLOSED DUE TO FLOODING. AREAS OF HEAVY RAINFALL CONTINUE TO MOVE OVER KAUAI FROM THE SOUTHWEST...AND THE THREAT OF FLOODING REMAINS OVER MOST OF THE ISLAND. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WAIMEA...MAKAWELI...WAINIHA...MOLOAA...KALALAU VALLEY... PRINCEVILLE...KOKEE STATE PARK...KILAUEA...KAPAA...HANALEI AND ANAHOLA. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW. DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT. TURN AROUND...DON/T DROWN. && THIS WARNING MAY NEED TO BE EXTENDED BEYOND 130 PM HST IF FLASH FLOODING PERSISTS. LAT...LON 2228 15977 2225 15925 2186 15946 2188 15986 $$ BRENCHLEY
339 WGHW50 PHFO 172324 FFWHFO HIC007-180130- /O.EXT.PHFO.FF.W.0001.000000T0000Z-120118T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HONOLULU HI 124 PM HST TUE JAN 17 2012 THE NATIONAL WEATHER SERVICE IN HONOLULU HAS EXTENDED THE * FLASH FLOOD WARNING FOR... THE ISLAND OF KAUAI IN KAUAI COUNTY * UNTIL 330 PM HST * AT 118 PM HST...RADAR SHOWED HEAVY SHOWERS CONTINUE TO MOVE OVER PORTIONS OF KAUAI. CIVIL DEFENSE REPORTS THAT THE BRIDGE AT HANALEI RIVER REMAINS CLOSED DUE TO FLOODING. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HAENA...WAINIHA...NA PALI STATE PARK...MOLOAA...KALALAU VALLEY... PRINCEVILLE...KILAUEA...KAPAA...HANALEI AND ANAHOLA. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW. DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT. TURN AROUND...DON/T DROWN. && THIS FLASH FLOOD WARNING REPLACES THE PRE-EXISTING WARNING THAT WAS IN EFFECT FOR THE ISLAND OF KAUAI IN KAUAI COUNTY. THIS WARNING MAY NEED TO BE EXTENDED BEYOND 330 PM HST IF FLASH FLOODING PERSISTS. LAT...LON 2228 15977 2225 15925 2186 15946 2188 15986 $$ BRENCHLEY
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 16, 3:23 PM HST | High Surf Advisory | HFO | Kauai | 25 hr |
| Jan 16, 6:59 PM HST | Areal Flood Advisory | HFO | Hawaii | 118 min |
| Jan 17, 6:45 AM HST | Special Marine Warning | HFO | 60 min | |
| Jan 17, 7:42 AM HST | Special Marine Warning | HFO | 63 min | |
| Jan 17, 8:42 AM HST | Special Marine Warning | HFO | 63 min | |
| Jan 17, 9:20 AM HST | Areal Flood Advisory | HFO | Kauai | 3 hr |
| Jan 17, 9:39 AM HST | Special Marine Warning | HFO | 66 min | |
| Jan 17, 10:43 AM HST | Special Marine Warning | HFO | 2 hr | |
| Jan 17, 11:43 AM HST | Wind Advisory | HFO | Honolulu, Kauai, Kalawao | 4 hr |
| Jan 17, 12:25 PM HST | Special Marine Warning | HFO | 65 min | |
| Jan 17, 1:20 PM HST | Special Marine Warning | HFO | 55 min |
Nearby
Flash Flood Warnings in Hawaii, 2012Every flash flood warning in 2012
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.