Alert archive / Hawaii / Flash Flood Warnings in 2011
Flash Flood Warning 2, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at Jan 12, 2011, 4:58 AM HST for Honolulu County, Hawaii. It was in force for 3 hr. 1 report 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, 4:58 AM HST (14:58 UTC)
- Expired
- Jan 12, 2011, 8:00 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 15:00 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, 6:34 AM HST | FLASH FLOOD | Aiea, HI | FLASH FLOODING ON NALOPAKA PLACE...FIRE OFFICIAL REPORT. |
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, 3.0 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1379 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
478 WGHW50 PHFO 121458 FFWHFO HIC003-121800- /O.NEW.PHFO.FF.W.0002.110112T1458Z-110112T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HONOLULU HI 458 AM 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 800 AM HST * AT 448 AM HST...RADAR SHOWED HEAVY RAIN ALONG A LINE EXTENDING FROM 12 MILES SOUTHEAST OF HONOLULU TO BARBERS POINT TO 12 MILES SOUTHWEST OF KAENA POINT...MOVING NORTH AT 20 MPH. * THIS WARNING INCLUDES 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 WARNING MAY NEED TO BE EXTENDED BEYOND 800 AM HST IF FLASH FLOODING PERSISTS. LAT...LON 2107 15791 2148 15852 2191 15810 2137 15753 $$ BRENCHLEY
1 follow-up statement
018 WGHW70 PHFO 121752 FFSHFO FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HONOLULU HI 752 AM HST WED JAN 12 2011 HIC003-121801- /O.EXP.PHFO.FF.W.0002.000000T0000Z-110112T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ OAHU IN HONOLULU COUNTY- 752 AM HST WED JAN 12 2011 ...THE FLASH FLOOD WARNING HAS EXPIRED FOR THE ISLAND OF OAHU IN HONOLULU COUNTY... WEATHER RADAR SHOWED THAT HEAVY RAINFALL HAS WEAKENED AND MOVED OFFSHORE. THUS THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE. A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE STATE OF HAWAII THROUGH THURSDAY AFTERNOON. LAT...LON 2107 15791 2148 15852 2191 15810 2137 15753 $$ BRAVENDER
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 11, 3:30 PM HST | Areal Flood Advisory | HFO | Hawaii | 6 hr |
| Jan 11, 3:30 PM HST | Wind Advisory | HFO | Hawaii, Honolulu, Kauai, Kalawao | 53 hr |
| Jan 12, 3:19 AM HST | Special Marine Warning | HFO | 101 min | |
| Jan 12, 3:31 AM HST | Winter Storm Warning | HFO | Hawaii | 36 hr |
| Jan 12, 4:51 AM HST | Special Marine Warning | HFO | 114 min | |
| Jan 12, 5:05 AM HST | Areal Flood Advisory | HFO | Kauai | 3 hr |
| Jan 12, 5:18 AM HST | Areal Flood Advisory | HFO | Kalawao | 6 hr |
| Jan 12, 5:40 AM HST | Areal Flood Advisory | HFO | Kalawao | 9 hr |
| Jan 12, 5:44 AM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Jan 12, 6:43 AM HST | Special Marine Warning | HFO | 2 hr | |
| Jan 12, 7:16 AM HST | Special Marine Warning | HFO | 119 min | |
| Jan 12, 8:24 AM HST | Flash Flood Warning | HFO | Kalawao | 6 hr |
| Jan 12, 8:42 AM HST | Special Marine Warning | HFO | 2 hr | |
| Jan 12, 9:15 AM HST | Special Marine Warning | HFO | 70 min | |
| Jan 12, 10:10 AM HST | Special Marine Warning | HFO | 95 min | |
| Jan 12, 11:20 AM HST | Special Marine Warning | HFO | 55 min | |
| Jan 12, 11:42 AM HST | Special Marine Warning | HFO | 48 min | |
| Jan 12, 11:49 AM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Jan 12, 11:53 AM HST | Severe Thunderstorm Warning | HFO | Kalawao | 37 min |
| Jan 12, 12:19 PM HST | Flash Flood Warning | HFO | Kalawao | 2 hr |
| Jan 12, 12:25 PM HST | Special Marine Warning | HFO | 65 min | |
| Jan 12, 12:56 PM HST | Areal Flood Advisory | HFO | Honolulu | 6 hr |
| Jan 12, 1:30 PM HST | Special Marine Warning | HFO | 29 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.