Cold front approaching Hawaii, expected to bring wet weather

By: Civicane49 , 11:17 AM GMT on January 27, 2013

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Calm, dry weather should end for some of the main Hawaiian Islands later today as the cold front will creep in and move down the island chain, bringing the threat for locally heavy rain and thunderstorms. Satellite imagery shows a cold front associated with a robust storm system located northwest of Hawaii. The approaching front should reach the islands of Niihau and Kauai by the next several hours. In fact, the radar data depicts areas of moderate to heavy rain located just less than hundred miles west of Niihau. The band of moisture will move eastward and reach these islands by later in the morning. The cold front is forecast to reach Oahu by the evening and reach the Maui County by early tomorrow. Heavy rain is expected for Oahu from early Sunday evening through Monday night. The Maui County should expect heavy rain from early Monday morning through the evening. By the time the front reaches the Big Island, however, it will likely fall apart. Nevertheless, the Big Island should still receive some moisture from that front. The front could also bring light snow to the summits. The timing of this whole event is expected to be adjusted as the event progresses. Typical trade wind pattern is forecast to return by Tuesday when the front finally reaches out of the islands. However, the remains of that front would bring some lingering showers mainly on the windward side of the islands.


Figure 1. Morning infrared satellite image of Hawaii and the Pacific Ocean as of 1:00 am HST. Image credit: Mauna Kea Weather Center (MKWC).

Since the cold front will bring the chance for heavy rain and thunderstorms to some of the Hawaiian Islands, flash flood watch will be in effect for the islands of Niihau, Kauai, and Oahu from Sunday morning through Monday afternoon. Thunderstorms result in increasing rain rate, leading to flash floods. Please heed the warnings and monitor the latest forecasts. If flash flood warnings are issued, be prepared to take quick actions.

Civicane49

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3. WunderAlertBot (Admin)
4:54 AM GMT on May 14, 2013
Civicane49 has created a new entry.
2. Civicane49
5:08 AM GMT on January 28, 2013
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
703 PM HST SUN JAN 27 2013

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A

* FLASH FLOOD WARNING FOR...
THE ISLAND OF OAHU IN HONOLULU COUNTY

* UNTIL 1000 PM HST

* AT 656 PM HST...RADAR SHOWED HEAVY RAIN WITH RATES OF 2 TO 3
INCHES AN HOUR ACROSS CENTRAL AND WINDWARD OAHU.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WAHIAWA...MILILANI...SCHOFIELD BARRACKS...HAUULA AND LAIE.

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.

THIS WARNING MAY NEED TO BE EXTENDED BEYOND 1000 PM HST IF FLASH
FLOODING PERSISTS.

LAT...LON 2153 15811 2175 15796 2152 15781 2135 15809

$$

REYNES/WROE
Member Since: July 21, 2011 Posts: 83 Comments: 7167
1. Civicane49
1:38 AM GMT on January 28, 2013
FLASH FLOOD WARNING
HIC003-280415-
/O.NEW.PHFO.FF.W.0025.130128T0123Z-130128T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000 Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
323 PM HST SUN JAN 27 2013

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A

* FLASH FLOOD WARNING FOR...
THE ISLAND OF OAHU IN HONOLULU COUNTY

* UNTIL 615 PM HST

* AT 311 PM HST...RADAR SHOWED HEAVY RAIN NEAR NANAKULI...OR ABOUT 19
MILES NORTHWEST OF HONOLULU. THE AREA OF HEAVY RAIN WAS MOVING
NORTHEASTWARD AT 15 TO 20 MPH...WITH MORE ON THE WAY.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WAIANAE AND MAILI.

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 615 PM HST IF FLASH
FLOODING PERSISTS.

LAT...LON 2150 15827 2156 15807 2130 15796 2124 15815

$$
POWELL
Member Since: July 21, 2011 Posts: 83 Comments: 7167

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