Alert archive / Hawaii / Flash Flood Warnings in 2012
Flash Flood Warning 13, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at Mar 6, 2012, 12:05 PM HST for Honolulu 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
- Mar 6, 2012, 12:05 PM HST (22:05 UTC)
- Expired
- Mar 6, 2012, 5:00 PM HST
- In force
- 5 hr
- Issued by
- NWS Honolulu, HI
- Area
- Storm-based polygon
- Flood severity
- None
County Honolulu County, HI
The radar
The Molokai radar (PHMO), 96 km from the middle of the area, began a volume at 22:05 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 6, 1:45 PM HST | FLASH FLOOD | Kailua, HI | OAHU DEM REPORTED FLOODING ALONG KAPAA QUARRY RD. |
| Mar 6, 3:30 PM HST | FLASH FLOOD | Honolulu, HI | CITY EMERGENCY MANAGEMENT REPORTED CLOSURE OF DIAMOND HEAD ROAD DUE TO MUD AND DEBRIS FROM FLOODING. |
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, 10.1 hours before the alert went out and 148 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
- 241 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 472 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 316 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
382
WGHW50 PHFO 062205
FFWHFO
HIC003-070100-
/O.NEW.PHFO.FF.W.0013.120306T2205Z-120307T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
1205 PM HST TUE MAR 6 2012
THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A
* FLASH FLOOD WARNING FOR...
THE ISLAND OF OAHU IN HONOLULU COUNTY
* UNTIL 300 PM HST
* AT 1154 AM HST...RADAR CONTINUES TO SHOW HEAVY RAIN AFFECTING
SATURATED PORTIONS OF EAST HONOLULU AND WAIMANALO...WHILE PARTIAL
ROAD CLOSURES HAVE BEEN REPORTED ALONG KALANIANAOLE HIGHWAY NEAR
SANDY BEACH. ANOTHER AREA OF HEAVY SHOWERS IS DEVELOPING TO THE
SOUTHWEST OF OAHU AND WILL MOVE OVER OAHU THROUGH 300 PM HST.
* OTHER LOCATIONS IN THE WARNING INCLUDE THE ENTIRE ISLAND OF OAHU.
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.
RUNOFF FROM THIS STORM MAY ALSO CAUSE ROCK AND MUDSLIDES IN STEEP
TERRAIN.
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 300 PM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2159 15831 2175 15797 2128 15755 2122 15791
2129 15817
$$
WROE4 follow-up statements
497
WGHW70 PHFO 070008
FFSHFO
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
208 PM HST TUE MAR 6 2012
HIC003-070100-
/O.CON.PHFO.FF.W.0013.000000T0000Z-120307T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HONOLULU HI-
208 PM HST TUE MAR 6 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF OAHU IN
HONOLULU COUNTY UNTIL 300 PM HST...
AT 200 PM HST...MODERATE TO HEAVY SHOWERS CONTINUE TO MOVE OVER OAHU
FROM THE SOUTHWEST. CIVIL DEFENSE HAS REPORTED FLOODING ON KAPAA
QUARRY ROAD AND THE CLOSURE OF HAWAII KAI DRIVE BETWEEN LUNALILO
HOME ROAD AND KEALAHOU STREET.
LOCATIONS IN THE WARNING INCLUDE THE ENTIRE ISLAND OF OAHU.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.
DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.
&&
RUNOFF FROM THIS STORM MAY ALSO CAUSE ROCK AND MUDSLIDES IN STEEP
TERRAIN.
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 300 PM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2159 15831 2175 15797 2128 15755 2122 15791
2129 15817
$$
WROE202
WGHW50 PHFO 070050
FFWHFO
HIC003-070300-
/O.EXT.PHFO.FF.W.0013.000000T0000Z-120307T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
250 PM HST TUE MAR 6 2012
THE NATIONAL WEATHER SERVICE IN HONOLULU HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
THE ISLAND OF OAHU IN HONOLULU COUNTY
* UNTIL 500 PM HST
* AT 242 PM HST...RADAR CONTINUED TO SHOW ISOLATED MODERATE TO
LOCALLY HEAVY SHOWERS MOVING OVER OAHU FROM THE SOUTHWEST.
KALANIANAOLE HIGHWAY REMAINS CLOSED NEAR SANDY BEACH.
* OTHER LOCATIONS IN THE WARNING INCLUDE THE ENTIRE ISLAND OF OAHU.
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.
RUNOFF FROM THIS STORM MAY ALSO CAUSE ROCK AND MUDSLIDES IN STEEP
TERRAIN.
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 500 PM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2159 15831 2175 15797 2128 15755 2122 15791
2129 15817
$$
WROE414
WGHW70 PHFO 070135
FFSHFO
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
335 PM HST TUE MAR 6 2012
HIC003-070300-
/O.CON.PHFO.FF.W.0013.000000T0000Z-120307T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HONOLULU HI-
335 PM HST TUE MAR 6 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF OAHU IN
HONOLULU COUNTY UNTIL 500 PM HST...
A BAND OF HEAVY SHOWERS FALLING AT 1 TO 3 INCHES PER HOUR WILL MOVE
OVER SOUTHEAST OAHU THROUGH 4 PM. THESE HEAVY SHOWERS CAN QUICKLY
TRIGGER FLASH FLOODING...ESPECIALLY OVER EAST HONOLULU AND WAIMANALO
WHERE SOILS ARE SATURATED.
LOCATIONS IN THE WARNING INCLUDE THE ENTIRE ISLAND OF OAHU.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.
DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.
&&
RUNOFF FROM THIS STORM MAY ALSO CAUSE ROCK AND MUDSLIDES IN STEEP
TERRAIN.
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 500 PM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2159 15831 2175 15797 2128 15755 2122 15791
2129 15817
$$
WROE728
WGHW70 PHFO 070259
FFSHFO
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
459 PM HST TUE MAR 6 2012
HIC003-070304-
/O.EXP.PHFO.FF.W.0013.000000T0000Z-120307T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HONOLULU HI-
459 PM HST TUE MAR 6 2012
...THE FLASH FLOOD WARNING HAS EXPIRED FOR THE ISLAND OF OAHU IN
HONOLULU COUNTY...
WEATHER RADAR SHOWED THAT HEAVY RAINFALL HAS MOVED OFF TO THE EAST.
THUS THE FLASH FLOOD WARNING IS ALLOWED TO EXPIRE.
THE HEAVY RAINS AND FLOODING HAVE SUBSIDED...BUT RUNOFF IS STILL
OCCURRING AND STREAMS WILL REMAIN HIGH FOR SEVERAL HOURS.
A FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH TONIGHT.
LAT...LON 2159 15831 2175 15797 2128 15755 2122 15791
2129 15817
$$
WROEThe office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 5, 3:40 PM HST | Areal Flood Advisory | HFO | Kalawao | 6 hr |
| Mar 5, 4:20 PM HST | Special Marine Warning | HFO | 115 min | |
| Mar 5, 5:14 PM HST | Special Marine Warning | HFO | 61 min | |
| Mar 5, 5:36 PM HST | Flash Flood Warning | HFO | Kauai | 15 hr |
| Mar 5, 6:41 PM HST | Special Marine Warning | HFO | 94 min | |
| Mar 5, 7:30 PM HST | Areal Flood Advisory | HFO | Honolulu | 8 hr |
| Mar 5, 7:53 PM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Mar 5, 7:53 PM HST | Special Marine Warning | HFO | 112 min | |
| Mar 5, 8:11 PM HST | Special Marine Warning | HFO | 94 min | |
| Mar 5, 8:46 PM HST | Severe Thunderstorm Warning | HFO | Kalawao | 29 min |
| Mar 5, 8:51 PM HST | Special Marine Warning | HFO | 114 min | |
| Mar 5, 9:26 PM HST | Special Marine Warning | HFO | 2 hr | |
| Mar 5, 9:54 PM HST | Special Marine Warning | HFO | 2 hr | |
| Mar 5, 10:41 PM HST | Special Marine Warning | HFO | 2 hr | |
| Mar 5, 11:51 PM HST | Special Marine Warning | HFO | 114 min | |
| Mar 6, 12:58 AM HST | Special Marine Warning | HFO | 2 hr | |
| Mar 6, 1:43 AM HST | Special Marine Warning | HFO | 90 min | |
| Mar 6, 3:25 AM HST | Special Marine Warning | HFO | 2 hr | |
| Mar 6, 6:41 AM HST | Areal Flood Advisory | HFO | Honolulu | 3 hr |
| Mar 6, 6:44 AM HST | Special Marine Warning | HFO | 61 min | |
| Mar 6, 7:10 AM HST | Winter Weather Advisory | HFO | Hawaii | 9 hr |
| Mar 6, 7:27 AM HST | Special Marine Warning | HFO | 63 min | |
| Mar 6, 7:53 AM HST | Flash Flood Warning | HFO | Honolulu | 6 hr |
| Mar 6, 8:18 AM HST | Special Marine Warning | HFO | 57 min | |
| Mar 6, 8:25 AM HST | Flash Flood Warning | HFO | Kauai | 3 hr |
| Mar 6, 9:11 AM HST | Special Marine Warning | HFO | 64 min | |
| Mar 6, 9:53 AM HST | Special Marine Warning | HFO | 67 min | |
| Mar 6, 10:03 AM HST | Special Marine Warning | HFO | 57 min | |
| Mar 6, 10:21 AM HST | Special Marine Warning | HFO | 27 min | |
| Mar 6, 10:54 AM HST | Special Marine Warning | HFO | 51 min | |
| Mar 6, 11:08 AM HST | Flash Flood Warning | HFO | Kauai | 5 hr |
| Mar 6, 11:41 AM HST | Special Marine Warning | HFO | 49 min | |
| Mar 6, 12:22 PM HST | Special Marine Warning | HFO | 39 min | |
| Mar 6, 1:15 PM HST | Special Marine Warning | HFO | 60 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.