Alert archive / Hawaii / Flash Flood Warnings in 2011
Flash Flood Warning 5, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at Jan 12, 2011, 5:51 PM HST for Honolulu County, Hawaii. It was in force for 6 hr. 3 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 12, 2011, 5:51 PM HST (03:51 UTC)
- Expired
- Jan 12, 2011, 11:45 PM HST
- In force
- 6 hr
- Issued by
- NWS Honolulu, HI
- Area
- Storm-based polygon
- Flood severity
- None
County Honolulu County, HI
The radar
The Molokai radar (PHMO), 101 km from the middle of the area, began a volume at 03:54 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 12, 10:33 PM HST | FLASH FLOOD | Pearl City, HI | FLASH FLOODING REPORTED ALONG THE KAMEHAMEHA HIGHWAY. |
| Jan 12, 11:10 PM HST | FLASH FLOOD | 1 Sw Waipahu, HI | FLASH FLOODING REPORTED ALONG OLD FORT WEAVER ROAD. |
| Jan 12, 11:21 PM HST | FLASH FLOOD | Waikane, HI | KAMEHAMEHA HIGHWAY CLOSED AT WAIKANE BRIDGE. SEVERAL CARS STALLED IN WATER. |
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, 3.9 hours before the alert went out and 143 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
- 1297 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 763 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 164 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.5
The text
As transmitted, in the capitals the NWS used until 2016.
661
WGHW50 PHFO 130351
FFWHFO
HIC003-130645-
/O.NEW.PHFO.FF.W.0005.110113T0351Z-110113T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
551 PM HST WED JAN 12 2011
THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A
* FLASH FLOOD WARNING FOR...
THE ISLAND OF OAHU IN HONOLULU COUNTY
* UNTIL 845 PM HST
* AT 540 PM HST...RADAR SHOWED HEAVY RAIN OVER NORTH AND WEST OAHU
MOVING NORTHEAST AT 30 MILES PER HOUR. A LINE OF ADDITIONAL HEAVY
SHOWERS WILL REACH THE WAIANAE COAST WITHIN AN HOUR AND WILL
QUICKLY CAUSE FLOODING PROBLEMS OVER ALREADY SATURATED GROUND
ESPECIALLY FROM WAIANAE TO LAIE. REPEATED SHOWERS WILL CONTINUE
TO MOVE OVER OAHU DURING THE NEXT SEVERAL HOURS.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HALEIWA...MAKAHA...WAHIAWA...MILILANI...KAPOLEI...
EWA...WAIPAHU...PEARL CITY...KAHUKU...HAUULA AND PUNALUU.
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 OAHU IN HONOLULU COUNTY.
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 845 PM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2160 15834 2176 15795 2147 15776 2123 15795
2126 15813
$$
KODAMA3 follow-up statements
839
WGHW70 PHFO 130444
FFSHFO
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
644 PM HST WED JAN 12 2011
HIC003-130645-
/O.CON.PHFO.FF.W.0005.000000T0000Z-110113T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
OAHU IN HONOLULU COUNTY-
644 PM HST WED JAN 12 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF OAHU IN
HONOLULU COUNTY UNTIL 845 PM HST...
VERY HEAVY RAINFALL CONTINUES OVER NORTH OAHU. THE LINE OF HEAVIEST
RAIN WAS FALLING FROM WAIANAE TO LAIE WITH RATES IN EXCESS OF 4
INCHES PER HOUR.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HALEIWA...MAKAHA...WAHIAWA...MILILANI...KAPOLEI...
EWA...WAIPAHU...PEARL CITY...KAHUKU...HAUULA AND PUNALUU.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.
DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.
&&
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 845 PM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2160 15834 2176 15795 2147 15776 2123 15795
2126 15813
$$
KODAMA489
WGHW50 PHFO 130637
FFWHFO
HIC003-130945-
/O.EXT.PHFO.FF.W.0005.000000T0000Z-110113T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
837 PM HST WED JAN 12 2011
THE NATIONAL WEATHER SERVICE IN HONOLULU HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
THE ISLAND OF OAHU IN HONOLULU COUNTY
* UNTIL 1145 PM HST
* AT 825 PM HST...RADAR DATA SHOWED HEAVY RAINFALL CONTINUING OVER
THE NORTHWEST HALF OF OAHU. THE HEAVIEST RAINFALL WAS ALONG A LINE
FROM WAIANAE TO KAHANA. EMERGENCY MANAGERS REPORTED KAUKONAHUA
ROAD HAS BEEN CLOSED DUE TO FLOODING. SEVERAL ROADS IN THE
WAIANAE AREA HAVE ALSO BEEN CLOSED. REPEATED HEAVY RAINFALL AREAS
WILL CONTINUE TO MOVE OVER OAHU FROM THE SOUTHWEST DURING THE NEXT
SEVERAL HOURS.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HALEIWA...MAKAHA...WAHIAWA...MILILANI...KAPOLEI...
EWA...WAIPAHU...PEARL CITY...KAHUKU...HAUULA AND PUNALUU.
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 OAHU IN HONOLULU COUNTY.
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 1145 PM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2160 15834 2176 15795 2147 15776 2123 15795
2126 15813
$$
KODAMA315
WGHW70 PHFO 130845
FFSHFO
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
1045 PM HST WED JAN 12 2011
HIC003-130945-
/O.CON.PHFO.FF.W.0005.000000T0000Z-110113T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
OAHU IN HONOLULU COUNTY-
1045 PM HST WED JAN 12 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF OAHU IN
HONOLULU COUNTY UNTIL 1145 PM HST...
VERY HEAVY RAINFALL CONTINUES OVER PORTIONS OF OAHU. THE HEAVIEST
RAINFALL WAS ALONG A LINE FROM EWA TO KANEOHE. ADDITIONAL AREAS OF
HEAVY RAINFALL CONTINUE TO DEVELOP AND MOVE OVER OAHU FROM THE
SOUTHWEST. EMERGENCY MANAGERS REPORTED KAMEHAMEHA HIGHWAY WAS
CLOSED AT WAIKANE STREAM. KAUKONAHUA STREAM WAS ALSO VERY HIGH AND
SOME RESIDENTS HAVE BEEN EVACUATING TO A SHELTER IN WAIALUA.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HALEIWA...MAKAHA...WAHIAWA...MILILANI...KAPOLEI...
EWA...WAIPAHU...PEARL CITY...KAHUKU...HAUULA...KANEOHE AND PUNALUU.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.
DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.
&&
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 1145 PM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2160 15834 2176 15795 2147 15776 2123 15795
2126 15813
$$
KODAMAThe office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 12, 2:22 PM HST | Areal Flood Advisory | HFO | Kalawao | 6 hr |
| Jan 12, 3:55 PM HST | Gale Warning | HFO | 12 hr | |
| Jan 12, 3:56 PM HST | Special Marine Warning | HFO | 77 min | |
| Jan 12, 4:59 PM HST | Areal Flood Advisory | HFO | Kauai | 3 hr |
| Jan 12, 5:39 PM HST | Special Marine Warning | HFO | 111 min | |
| Jan 12, 6:31 PM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Jan 12, 9:26 PM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Jan 12, 11:28 PM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Jan 12, 11:33 PM HST | Flash Flood Warning | HFO | Honolulu | 9 hr |
| Jan 13, 12:37 AM HST | Special Marine Warning | HFO | 53 min | |
| Jan 13, 12:45 AM HST | Severe Thunderstorm Warning | HFO | Kalawao | 30 min |
| Jan 13, 12:54 AM HST | Flash Flood Warning | HFO | Kalawao | 3 hr |
| Jan 13, 1:24 AM HST | Special Marine Warning | HFO | 96 min | |
| Jan 13, 1:56 AM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Jan 13, 2:55 AM HST | Special Marine Warning | HFO | 95 min | |
| Jan 13, 3:10 AM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Jan 13, 3:42 AM HST | Flash Flood Warning | HFO | Kalawao | 3 hr |
| Jan 13, 4:11 AM HST | Areal Flood Advisory | HFO | Kauai | 3 hr |
| Jan 13, 4:31 AM HST | Special Marine Warning | HFO | 59 min | |
| Jan 13, 5:03 AM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Jan 13, 5:21 AM HST | Special Marine Warning | HFO | 24 min | |
| Jan 13, 5:39 AM HST | Special Marine Warning | HFO | 36 min | |
| Jan 13, 6:02 AM HST | Flash Flood Warning | HFO | Kalawao | 3 hr |
| Jan 13, 7:42 AM HST | Special Marine Warning | HFO | 63 min | |
| Jan 13, 8:11 AM HST | Special Marine Warning | HFO | 64 min | |
| Jan 13, 8:37 AM HST | Areal Flood Advisory | HFO | Honolulu | 6 hr |
| Jan 13, 8:43 AM HST | Special Marine Warning | HFO | 62 min | |
| Jan 13, 9:18 AM HST | Special Marine Warning | HFO | 65 min | |
| Jan 13, 9:39 AM HST | Small Craft Advisory | HFO | 18 hr | |
| Jan 13, 9:45 AM HST | Special Marine Warning | HFO | 35 min |
Nearby
Flash Flood Warnings in Hawaii, 2011Every flash flood warning in 2011
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.