Alert archive / Hawaii / Flash Flood Warnings in 2006

Flash Flood Warning 120, NWS Honolulu, HI

April 2, 2006Honolulu County, Hawaii

NWS Honolulu, HI issued this flash flood warning at Apr 2, 2006, 1:42 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 counties it named.

The facts

Issued: Apr 2, 2006, 1:42 PM HST (23:42 UTC)
Expired: Apr 2, 2006, 4:45 PM HST
In force: 3 hr
Issued by: NWS Honolulu, HI
Area: Counties, with a storm outline in the text

County Honolulu County, HI

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 Apr 2, 10:00 AM HST, 3 hours 42 minutes earlier.

Area forecast discussion, Apr 2, 10:00 AM HST, 3 hours 42 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
1000 AM HST SUN APR 2 2006

.SYNOPSIS...
THE UPPER LOW NEAR KAUAI WILL BE WEAKENING TODAY WHILE IT WORKS ITS
WAY DOWN THE MAIN HAWAIIAN ISLANDS. THE TRADE WINDS ARE STILL SLATED
TO RETURN TONIGHT. HOWEVER IT COULD BE WET TRADES THIS WEEK AS A
FRESH TROUGH ALOFT SETTLES OVER THE ISLANDS.
&&

.DISCUSSION...
A THUNDERSTORM HAS DEVELOPED AND MOVED ONSHORE NEAR KANEOHE THIS
MORNING...AND TOWERING CUMULUS ARE NOTED ON THE WINDWARD SIDE OF
OAHU...AND OVER CENTRAL KAUAI. HAVE MODIFIED SEVERAL GRIDS THIS
MORNING...AND WILL LIKELY CONTINUE TO TWEAK THE GRIDS THROUGHOUT THE
DAY. GAGES AND RADAR INDICATE RAINFALL RATES IN EXCESS OF 2 INCHES
PER HOUR WITH THIS STORM...PROMPTING THE ISSUANCE OF AN URBAN AND
SMALL STREAM FLOOD ADVISORY FOR THE WINDWARD SIDE OF OAHU.
ANTICIPATE SIMILAR EVENTS TODAY FOR OAHU...KAUAI AND NIIHAU...THUS
THE FLASH FLOOD WATCH CONTINUES FOR THESE ISLANDS.

EARLIER THIS MORNING...THE KAUAI RADAR WAS PICKING UP FALSE RETURNS
ON NORTHERN OAHU. A NEW CLUTTER SUPPRESSION WAS ADDED TO THE KAUAI
RADAR JUST BEFORE 8 AM THIS MORNING TO CORRECT THIS ISSUE.

MAIN CHANGES THIS MORNING ARE TO THE WINDS THROUGHOUT THE FORECAST
PERIOD. EXPECT THE EAST WINDS TODAY TO STRENGTHEN THROUGHOUT THE
WEEK...BRINGING MORE TYPICAL TRADE WIND WEATHER TO THE STATE. SOME
SHORT TERM MODIFICATIONS HAVE BEEN MADE TO THE POP/SKY/WX GRIDS.
TEMPERATURES AND RELATED FIELDS HAVE ALSO BEEN MODIFIED TO BRING
THEM MORE INLINE WITH THE CURRENT FORECAST PHILOSOPHY OF A RETURN TO
THE TRADE WIND WEATHER PATTERN THIS WEEK.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH KAUAI NIIHAU OAHU THROUGH 8 PM TONIGHT.

&&

M BALLARD

In the hours before

Local storm report, Apr 2, 1:39 PM HST, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HONOLULU HI
139 PM HST SUN APR 02 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0115 PM     LIGHTNING        HAUULA                  21.59N 157.92W
04/02/2006                   HONOLULU           HI   EMERGENCY MNGR

            LIGHTNING HIT 2 POLES ON KAWAIPUNA STREET. ELECTRICITY IS
            OUT IN HAUULA AND THERE ARE LINES ON THE ROADWAY.

&&

HFO

The office that day

Everything else NWS Honolulu, HI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 1, 5:45 PM HST	Flash Flood Warning	HFO	Honolulu	3 hr
Apr 1, 8:31 PM HST	Flash Flood Warning	HFO	Honolulu	3 hr
Apr 2, 12:52 AM HST	Flash Flood Warning	HFO	Honolulu	3 hr
Apr 2, 3:43 AM HST	Flash Flood Watch	HFO	Hawaii, Honolulu, Kauai, Kalawao	36 hr
Apr 2, 10:50 AM HST	Flash Flood Warning	HFO	Honolulu	3 hr

Nearby

Flash Flood Warnings in Hawaii, 2006 Every 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.