Alert archive / Hawaii / Flash Flood Warnings in 2006
Flash Flood Warning 161, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at Nov 26, 2006, 9:20 PM 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
- Nov 26, 2006, 9:20 PM HST (07:20 UTC)
- Expired
- Nov 27, 2006, 12:15 AM HST
- In force
- 3 hr
- Issued by
- NWS Honolulu, HI
- Area
- Counties, with a storm outline in the text
County Honolulu County, HI
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Lihue, (PHLI), launched 00:00Z, 7.3 hours before the alert went out and 157 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
- 842 J/kg
- Mixed-layer CIN
- -79 J/kg
- Mixed-layer LCL
- 1371 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGHW50 PHFO 270721 FFWHFO HIC003-271015- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HONOLULU HI 920 PM HST SUN NOV 26 2006 THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A * FLASH FLOOD WARNING FOR... THE ISLAND OF OAHU IN HONOLULU COUNTY * UNTIL 1215 AM HST * AT 920 PM HST...RADAR SHOWED VERY HEAVY SHOWERS PERSISTING NEAR WAIKANE. THE AREA OF HEAVY RAIN WAS NEARLY STATIONARY. RADAR WAS ESTIMATING RAINFALL RATES OF 3 TO 4 INCHES PER HOUR IN THE MOST INTENSE DOWNPOURS. * THE AREA OF HEAVY RAIN WILL AFFECT THE KOOLAU RANGE UPSLOPE FROM WAIKANE TO KAHALUU. THIS FLASH FLOOD WARNING REPLACES THE FLOOD ADVISORY THAT WAS IN EFFECT FOR THE ISLAND OF OAHU IN HONOLULU COUNTY. 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. THIS WARNING WILL BE EXTENDED BEYOND 1215 AM HST IF FLASH FLOODING PERSISTS. LAT...LON 2142 15796 2144 15785 2155 15789 2154 15800 $$ R BALLARD
2 follow-up statements
000 WGHW70 PHFO 270856 FFSHFO FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HONOLULU HI 1055 PM HST SUN NOV 26 2006 HIC003-271015- OAHU IN HONOLULU COUNTY- 1055 PM HST SUN NOV 26 2006 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR OAHU UNTIL 1215 AM... AT 1055 PM...RADAR INDICATED MODERATE TO HEAVY SHOWERS PERSISTING NEAR WAIKANE. RADAR AND RAIN GAUGES INDICATE THAT SEVERAL INCHES OF RAIN HAVE FALLEN IN THIS AREA...WHICH WILL CAUSE SIGNIFICANT RISES ON NEARBY STREAMS. A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING. MOVE TO HIGHER GROUND NOW. DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT. THIS WARNING WILL BE EXTENDED BEYOND 1215 AM IF FLASH FLOODING PERSISTS. LAT...LON 2142 15796 2144 15785 2155 15789 2154 15800 $$ R BALLARD
000 WGHW70 PHFO 271011 FFSHFO FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HONOLULU HI 1211 AM HST MON NOV 27 2006 HIC003-271030- OAHU IN HONOLULU COUNTY- 1211 AM HST MON NOV 27 2006 ...FLASH FLOOD WARNING FOR OAHU WILL EXPIRE AT 1215 AM... AT 1211 AM...RADAR SHOWED THE HEAVY RAINS UPSLOPE FROM WAIKANE HAVE SUBSIDED. THUS THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE. LAT...LON 2142 15796 2144 15785 2155 15789 2154 15800 $$ R BALLARD
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Honolulu, HI wrote its last area forecast discussion before this flash flood warning went out at Nov 26, 4:40 PM HST, 4 hours 40 minutes earlier.
Area forecast discussion, Nov 26, 4:40 PM HST, 4 hours 40 minutes before
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE HONOLULU HI 440 PM HST SUN NOV 26 2006 .UPDATE...UPDATED TO REDUCE CLOUDS AND SHOWERS AND REMOVE HEAVY SHOWERS AND THUNDERSTORMS THIS EVENING. REST OF THE PACKAGE LOOKS OK. && .SYNOPSIS... A TROUGH ALOFT THAT HAS BEEN CREATING UNSETTLED WEATHER IS MOVING AWAY TO THE NORTHEAST. TRADE-WIND WEATHER...WITH SHOWERS OVER MAINLY WINDWARD AREAS...WILL RETURN OVERNIGHT AND CONTINUE THROUGH MONDAY NIGHT. A LOW FORMING NORTH OF THE ISLANDS WILL DISRUPT THE TRADES ON TUESDAY AND PUSH A COLD FRONT SOUTH OVER THE ISLANDS STARTING TUESDAY NIGHT. THERE WILL BE CLOUDS AND SHOWERS ALONG THE FRONT...FOLLOWED BY DRIER AND COOLER WEATHER STARTING THURSDAY. && .DISCUSSION...HEAVY SHOWERS THAT POPPED UP ON KAUAI DURING THE AFTERNOON HAVE ALREADY DISSIPATED AND IT HAS REMAINED MOSTLY DRY ELSEWHERE OVER THE ISLANDS. THERE IS STILL SOME CHANCE WE COULD GET HEAVY SHOWERS LATER THIS EVENING BUT THE CHANCE HAS GOTTEN SLIM. IT LOOKS AS IF THE ATMOSPHERE IS ALREADY STABILIZING. WE HAVE ADJUSTED THE GRIDS AND TEXT FORECASTS TO REDUCE CLOUDS AND SHOWERS AND REMOVE THE FORECAST OF HEAVY SHOWERS AND THUNDERSTORMS OVERNIGHT. MORE TYPICAL TRADE-WIND WEATHER WILL RETURN TONIGHT THROUGH MONDAY NIGHT. SHOWERS WILL BE FOCUSED OVER WINDWARD AREAS. ANOTHER TROUGH ALOFT DEEPENING NORTHWEST OF THE ISLANDS WILL DIG TOWARDS THE EAST SOUTHEAST OVER THE NEXT FEW DAYS WITH A LOW FORMING NORTH OF THE ISLANDS ON TUESDAY. AS THE TROUGH DIGS TOWARDS THE ISLANDS...IT WILL INDUCE A SURFACE TROUGH OVER THE ISLANDS PRODUCING LIGHT TRADES TUESDAY AND KILLING THE TRADE WINDS BY TUESDAY EVENING. THE ATMOSPHERE WILL BE STABLE ON TUESDAY SO THE WEATHER WILL BE DRY. A COLD FRONT ASSOCIATED WITH THE TROUGH ALOFT WILL MOVE SOUTHEAST OVER THE ISLANDS. A SHOWER BAND ALONG THE FRONT WILL REACH KAUAI TUESDAY NIGHT...OAHU AND MAUI COUNTY DURING THE DAY ON WEDNESDAY AND THE BIG ISLAND WEDNESDAY NIGHT. THE SHOWER BAND WILL WEAKEN AS IT MOVES SOUTHEAST AND THERE MAY NOT BE MUCH LEFT OF IT BY THE TIME IT GETS TO THE BIG ISLAND. NORTH WINDS BEHIND THE SHOWER BAND WILL BRING IN COOLER AIR SO TEMPERATURES MAY DROP 5 DEGREES BY THURSDAY MORNING. ADDITIONAL CLOUD BANDS MAY MOVE SOUTH OVER THE ISLANDS BEHIND THE FRONT WEDNESDAY NIGHT THROUGH THURSDAY NIGHT. I EXPECT THE LOW ALOFT WILL BE FAR ENOUGH NORTHEAST OF THE ISLANDS BY THEN SO THAT THE ATMOSPHERE WILL BE PRETTY STABLE AND SHOWERS WILL BE LIGHT BUT THE MODELS HAVE BEEN A BIT INCONSISTENT WITH THIS COMPLEX PATTERN. THE MEDIUM RANGE MODELS SUGGEST THAT ANOTHER LOW ALOFT MAY DIG TOWARD THE ISLANDS NEXT WEEKEND PRODUCING MORE UNSETTLED WEATHER. THE MODEL SOLUTION SEEMS REASONABLE...BUT THE FORECAST THAT FAR OUT IS STILL QUITE UNCERTAIN. THE MOKAPU BUOY STILL SHOWS COMBINED SEAS OF 8 FEET AT 9 TO 11 SECONDS SO WE WILL KEEP THE HIGH SURF ADVISORY FOR EAST FACING SHORES FROM KAUAI TO THE BIG ISLAND THROUGH MONDAY MORNING. SINCE THE SWELL DIRECTION IS NOW MORE OUT OF THE EAST WE HAVE ADDED THE SOUTH BIG ISLAND TO THE AREA COVERED BY THE HIGH SURF ADVISORY. && .HFO WATCHES/WARNINGS/ADVISORIES... SMALL CRAFT ADVISORY FOR WATERS SOUTH OF THE BIG ISLAND AND THE ALENUIHAHA AND PAILOLO CHANNELS HIGH SURF ADVISORY FOR EAST FACING SHORES THROUGH MONDAY MORNING. && DONALDSON
Nearby
Flash Flood Warnings in Hawaii, 2006Every flash flood warning in 2006
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.