High Surf in Hawaii, July 22 to 23, 2008

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
1000 AM HST TUE JUL 22 2008

.SYNOPSIS...THE REMAINS OF AN OLD TROPICAL SYSTEM WILL PASS SOUTH OF
THE ISLANDS THROUGH THE NEXT COUPLE OF DAYS. IT WILL BRING AN
INCREASE IN SHOWERS...PARTICULARLY ACROSS THE WINDWARD BIG ISLAND.
THERE IS A CHANCE THAT ISOLATED THUNDERSTORMS MAY DEVELOP OVER THE
WINDWARD AND SOUTHEASTERN BIG ISLAND AND THE ADJACENT COASTAL WATERS
THIS AFTERNOON AND TONIGHT. HIGH PRESSURE FAR NORTH OF THE ISLANDS
WILL MAINTAIN TRADE WINDS OVER THE AREA AT LEAST THROUGH REST OF THE
WEEK.

&&

.DISCUSSION...
TRADE WINDS ARE SLOWLY BUILDING THIS MORNING...AS HIGH PRESSURE FAR
NORTH OF THE ISLANDS SLOWLY STRENGTHENS IN THE NEXT FEW DAYS.
RAINFALL AMOUNTS REPORTED ACROSS THE STATE SINCE LAST NIGHT SHOWED
THE USUAL DISTRIBUTION OF PRECIPITATION...WITH WINDWARD SECTIONS
GETTING THE MOST WHILE LEE AREAS GOT LESS. DO EXPECT THE
PRECIPITATION TO INCREASE ACROSS THE AREA AS THE STRONGER TRADE
WINDS ALLOWING THE CLOUDS AND SHOWERS TO MAKE IT FURTHER INTO THE
LEE AREAS. ALSO SATELLITE IMAGERY SHOWS A RATHER EXTENSIVE AREA OF
LOW CLOUDS JUST EAST OF THE ISLANDS...AND THESE WILL REACH OUR
ISLANDS IN THE COMING DAYS.

IT WILL BE A PRETTY STANDARD TRADE WIND WEATHER FORECAST IF NOT FOR
THE REMAINS OF FORMER EAST PACIFIC TROPICAL CYCLONE ELIDA. THE BULK
OF THE REMNANTS OF ELIDA IS JUST SOUTHEAST OF THE BIG ISLAND THIS
MORNING...AND SHOULD PASS THE BIG ISLAND LATER TONIGHT INTO
WEDNESDAY MORNING. STILL EXPECT MOST OF THE MOISTURE TO STAY SOUTH
OF THE ISLANDS...THOUGH THE BIG ISLAND WINDWARD AND SOUTH WILL
PROBABLY SEE SOME MOISTURE FROM THE SYSTEM. THUS DO EXPECT A MUCH
HIGHER CHANCE OF PRECIPITATION FOR THE BIG ISLAND...SPECIALLY THE
EAST AND SOUTH SIDES. THERE IS ALSO A CHANCE FOR THUNDERSTORMS TO
DEVELOP ON THE SOUTHERN PORTION OF THE BIG ISLAND LATER TODAY INTO
TONIGHT AS THE SYSTEM PASSES BY. SHOWERS THAT AFFECT THE BIG ISLAND
SHOULD BE MOVING RAPIDLY WESTWARD. THUS EVEN THOUGH THERE MAY BE
LOCALLY BRIEF HEAVY SHOWERS...ESPECIALLY IF THUNDERSTORMS
DEVELOP...WIDESPREAD FLOODING IS STILL NOT EXPECTED. THE SITUATION
DEFINITELY REQUIRES CLOSE MONITORING AS IT UNFOLDS LATER TODAY
THROUGH TONIGHT.

ANOTHER EFFECT FROM THE PASSAGE OF THIS SYSTEM IS THE FURTHER
INCREASE OF THE TRADE WINDS...AS THE PRESSURE GRADIENT TIGHTENS OVER
THE ISLANDS. A WIND ADVISORY IS IN EFFECT FOR HALEAKALA AT THIS
TIME. SHALL CONTINUE TO MONITOR THE POSSIBLE WIND
SITUATION...SPECIALLY OVER MAUNA KEA AND MAUNA LOA.

LOOKS LIKE MORE TYPICAL TRADE WIND WEATHER WILL PREVAIL THROUGH REST
OF THE WEEK INTO NEXT...WITH PASSING CLOUDS AND SHOWERS AFFECTING
THE ISLANDS AT TIMES.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
SMALL CRAFT ADVISORY THROUGH TONIGHT FOR THE ALENUIHAHA... PAILOLO
AND KAIWI CHANNELS...MAALAEA BAY...AND WATERS SOUTH OF THE BIG
ISLAND.

SMALL CRAFT ADVISORY TONIGHT FOR THE KAUAI CHANNEL...THE NORTHWEST
KAUAI COASTAL WATERS AND ALL WINDWARD COASTAL WATERS.

HIGH SURF ADVISORY FROM 12 PM HST TODAY THROUGH 6 PM HST WEDNESDAY
FOR EAST FACING SHORES OF THE BIG ISLAND.

HIGH SURF ADVISORY FROM 6 PM HST TODAY THROUGH 6 PM HST WEDNESDAY
FOR EAST FACING SHORES OF MAUI...MOLOKAI...OAHU AND KAUAI.

WIND ADVISORY FROM 9 AM HST THIS MORNING THROUGH 6 AM HST WEDNESDAY
FOR HALEAKALA SUMMIT.

&&

HUI