Alert archive / Hawaii / Flash Flood Warnings in 2012
Flash Flood Warning 5, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at Mar 4, 2012, 12:12 AM HST for Honolulu County, Hawaii. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Mar 4, 2012, 12:12 AM HST (10:12 UTC)
- Expired
- Mar 4, 2012, 2:47 AM HST
- In force
- 3 hr
- Issued by
- NWS Honolulu, HI
- Area
- Storm-based polygon
- Flood severity
- None
County Honolulu County, HI
The radar
The Molokai radar (PHMO), 89 km from the middle of the area, began a volume at 10:14 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.
The nearest sounding before it
Lihue, (PHLI), launched 00:00Z, 10.2 hours before the alert went out and 156 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
- 1525 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 498 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
291 WGHW50 PHFO 041012 FFWHFO HIC003-041315- /O.NEW.PHFO.FF.W.0005.120304T1012Z-120304T1315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HONOLULU HI 1212 AM HST SUN MAR 4 2012 THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A * FLASH FLOOD WARNING FOR... THE ISLAND OF OAHU IN HONOLULU COUNTY * UNTIL 315 AM HST * AT 1206 AM HST...PUNALUU STREAM GAGE SHOWED A RAPID RISE IN WATER LEVEL FROM RUNOFF OF HEAVY RAIN OVER THE KOOLAU MOUNTAIN...OR ABOUT 15 MILES NORTH OF HONOLULU. THE AREA OF HEAVY RAIN WAS NEARLY STATIONARY. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HAUULA AND KAAAWA. 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. RUNOFF FROM THIS STORM MAY ALSO CAUSE ROCK AND MUDSLIDES IN STEEP TERRAIN. THIS WARNING MAY NEED TO BE EXTENDED BEYOND 315 AM HST IF FLASH FLOODING PERSISTS. LAT...LON 2157 15798 2162 15788 2151 15782 2148 15793 $$ HUI/HOUSTON
2 follow-up statements
246 WGHW70 PHFO 041128 FFSHFO FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HONOLULU HI 128 AM HST SUN MAR 4 2012 HIC003-041315- /O.CON.PHFO.FF.W.0005.000000T0000Z-120304T1315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ HONOLULU HI- 128 AM HST SUN MAR 4 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF OAHU IN HONOLULU COUNTY UNTIL 315 AM HST... RADAR CONTINUES TO SHOW MODERATE TO HEAVY RAINFALL OCCURRING OVER THE KOOLAU MOUNTAINS JUST UPSLOPE FROM THE PUNALUU STREAM. AS A RESULT...THE PUNALUU STREAM GAGE CONTINUES TO SHOW HIGHER THAN NORMAL WATER LEVELS. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PUNALUU... HAUULA AND KAAAWA. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW. DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT. TURN AROUND...DON/T DROWN. && RUNOFF FROM THIS STORM MAY ALSO CAUSE ROCK AND MUDSLIDES IN STEEP TERRAIN. THIS WARNING MAY NEED TO BE EXTENDED BEYOND 315 AM HST IF FLASH FLOODING PERSISTS. LAT...LON 2157 15798 2162 15788 2151 15782 2148 15793 $$ HOUSTON/HUI
490 WGHW70 PHFO 041247 FFSHFO FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HONOLULU HI 247 AM HST SUN MAR 4 2012 HIC003-041257- /O.CAN.PHFO.FF.W.0005.000000T0000Z-120304T1315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ HONOLULU HI- 247 AM HST SUN MAR 4 2012 ...THE FLASH FLOOD WARNING IS CANCELLED FOR THE ISLAND OF OAHU IN HONOLULU COUNTY... THE HEAVY RAINS HAVE SUBSIDED...BUT RUNOFF IS STILL OCCURRING AND STREAMS WILL REMAIN HIGH FOR SEVERAL HOURS. LAT...LON 2157 15798 2162 15788 2151 15782 2148 15793 $$
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 3, 2:46 PM HST | Areal Flood Advisory | HFO | Kauai | 6 hr |
| Mar 3, 3:12 PM HST | High Surf Advisory | HFO | Honolulu, Kauai, Kalawao | 5 days |
| Mar 3, 4:47 PM HST | Areal Flood Advisory | HFO | Hawaii | 3 hr |
| Mar 3, 5:44 PM HST | Small Craft Advisory | HFO | 9 days | |
| Mar 3, 8:46 PM HST | Flash Flood Warning | HFO | Kauai | 12 hr |
| Mar 3, 11:20 PM HST | Areal Flood Advisory | HFO | Honolulu | 3 hr |
| Mar 3, 11:21 PM HST | Areal Flood Advisory | HFO | Hawaii | 100 min |
| Mar 4, 5:58 AM HST | Areal Flood Advisory | HFO | Honolulu | 15 hr |
| Mar 4, 7:12 AM HST | Flash Flood Watch | HFO | Honolulu, Kauai, Kalawao | 68 hr |
| Mar 4, 8:49 AM HST | Flash Flood Warning | HFO | Kauai | 33 hr |
| Mar 4, 12:14 PM HST | Special Marine Warning | HFO | 2 hr | |
| Mar 4, 1:12 PM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Mar 4, 1:15 PM HST | Special Marine Warning | HFO | 2 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.