Menu of Text Products for the Hawaiian Islands and the Tropical Pacific/Atlantic Oceans: Select a text product: Hawaiian Islands Synoptic Discussion and Guidance Hawaiian Islands Short Term Forecast Hawaiian Islands 7-day Zone Forecast Hydrologic Outlook Flash Flood Warning Flash Flood Watch Flash Flood Statement Tornado Warning Severe Weather Statement Severe Thunderstorm Warning Special Weather Statement Winter Storm Warnings/Watches/Advisories Urgent Weather Message Marine Weather Statement/High Surf Advisory/Warning Special Marine Warning Radar Message Special Messages Unknown Terminal Aerodome Foreasts (TAFS) Area Forecast for Hawaii and Adjacent Coastal Waters Upper-level Winds and Temperature Forecast for the 4 Major Hawaii AP AIRMETs for IFR Conditions, Turbulence, and Icing Thunderstorm SIGMETs Hawaiian Islands Satellite Interpetation Message Central/North Pacific Tropical Weather Outlook Central/North Pacific Tropical Weather Summary Central Pacific Tropical Cyclone Summary South Pacific Tropical Cyclone Summary Tropical Cyclone SIGMETs Buoy Winds and Wave Forecast Oahu Surf Observation and Forecast/Coastal Forecast for Hawaiian Waters Offshore Forecast for Hawaiian Waters North Pacific High Seas Forecast South Pacific High Seas Forecast Hawaiian Islands Automated Surface Observation System Hourly Weather Roundup Hawaiian Islands Wind Data Hawaiian Islands Rainfall Summary Hawaii Temperature and Precipitation Summary Daily Hawaii Cooperative Observations Honolulu AP Climate Summary Lihue AP Climate Summary Kahului AP Climate Summary Hilo AP Climate Summary Atlantic Tropical Cyclone Discussion Atlantic Tropical Weather Outlook East Pacific Tropical Cyclone Discussion East Pacific Tropical Weather Outlook Central Pacific Tropical Cyclone Discussion Central Pacific Tropical Weather Outlook West Pacific Tropical Cyclone Discussion West Pacific Tropical Weather Outlook Narrow the Menu List Select Time Limit: 12 hours | 24 hours | 48 hours | 72 hours | No time limit Select Product Type: All | Routine Bulletins/FCSTS | Warnings/Watches/Advisories | HAWN Weather | Tropical | Marine | Aviation | Daily Obs | Special Hawaiian Islands Synoptic Discussion and Guidance 783 FXHW60 PHFO 252003 AFDHFO AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 1000 AM HST SAT MAY 25 2013 .SYNOPSIS... A STRONG SURFACE RIDGE NORTH OF THE STATE WILL MAINTAIN LOCALLY BREEZY TRADE WINDS THROUGH THE HOLIDAY WEEKEND. RAINFALL WILL FAVOR WINDWARD SLOPES WITH SOME SHOWERS CARRYING OVER TO LEEWARD AREAS... MAINLY AT NIGHT. TRADES WILL DECREASE A NOTCH AND SHIFT MORE EASTERLY ON TUESDAY AND WEDNESDAY. && .DISCUSSION... LOCALLY BREEZY TRADE WINDS ARE IN STORE THROUGH THE HOLIDAY WEEKEND. A SURFACE RIDGE RUNS ALONG 31N NORTH OF THE ISLANDS TO A 1030 MB SURFACE HIGH CENTERED NEAR 35N142W. THE RIDGE WILL HOLD NEAR ITS CURRENT POSITION AS THE HIGH DRIFTS SOUTHWARD THROUGH MONDAY. AS A RESULT...LOCALLY BREEZY TRADE WINDS WILL PREVAIL. EXPECT A SLIGHT UPTICK IN WIND SPEED FOR TONIGHT AND SUNDAY. A SOMEWHAT ACTIVE SHOWER PATTERN IS IN STORE IN THE SHORT TERM FOR MAINLY WINDWARD SLOPES. A FIELD OF SHOWER-BEARING CUMULUS CLOUDS LIES ABOUT 175 MILES NORTHEAST OF THE ISLANDS AND EXTENDS OVER 600 MILES EAST OF THE BIG ISLAND. THIS FIELD IS BEING ENHANCED SLIGHTLY BY A SOUTHWARD-DRIFTING UPPER LEVEL TROUGH DIRECTLY OVERHEAD. EXPECT AN UPTICK IN SHOWERS HEADED INTO THE EVENING...WITH SOME SHOWERS BRIEFLY PASSING OVER LEEWARD SECTIONS OF THE SMALLER ISLANDS. THE SHOWERS SHOULD PERSIST OVER WINDWARD BIG ISLAND INTO SUNDAY MORNING...THOUGH A DECREASE IN WINDWARD SHOWERS IS LIKELY FOR MOST AREAS ON SUNDAY. GLOBAL MODELS ARE IN FAIR AGREEMENT REGARDING THE DEVELOPMENT OF AN UPPER LOW JUST E OF THE BIG ISLAND EARLY NEXT WEEK. THIS COULD BRING INCREASING INSTABILITY AND SOME ENHANCED SHOWER ACTIVITY...BUT IT IS STILL EARLY TO DETERMINE HOW BIG OF AN IMPACT THIS FEATURE WILL HAVE. DURING THIS TIME...THE SURFACE RIDGE NORTH OF THE STATE WILL ALSO WEAK...LEADING TO A DECREASING TREND IN THE TRADE WINDS. RECENT MODEL RUNS ARE ALSO HINTING AT WINDS BECOMING MORE EASTERLY ON TUESDAY AND WEDNESDAY. && .AVIATION... VFR CONDITIONS WILL PREVAIL STATEWIDE TODAY...BUT WITH SCT MVFR CEILINGS IN SHOWERS ON WINDWARD AREAS OF ALL ISLANDS. TRADE WINDS SHOULD HOLD THROUGH THE LONG WEEKEND AND BEYOND. AIRMET TANGO FOR LOW LEVEL TURBULENCE OVER AND IMT S THRU W OF MOUNTAINS BELOW 080 EXPECTED TO REMAIN IN EFFECT THROUGH THE LONG WEEKEND AS WELL. && .MARINE... THE SMALL CRAFT ADVISORY FOR STRONG WINDS OVER THE WINDIER WATERS AROUND MAUI COUNTY AND THE BIG ISLAND HAS BEEN EXTENDED THROUGH 6 AM HST TUESDAY AS HIGH PRESSURE NE OF THE ISLANDS STRENGTHENS. THE ADVISORY MAY BE ADJUSTED LATER TODAY TO INCLUDE ADDITIONAL COASTAL ZONES. SMALL TO MODERATE SOUTH SWELLS WILL PREVAIL THROUGH THE UPCOMING WEEK. MODERATE WIND SWELL WILL AFFECT EAST SHORES WHILE SURF ALONG NORTH FACING SHORES IS RETURNING TO MINIMAL SUMMER LEVELS. && .HFO WATCHES/WARNINGS/ADVISORIES... SMALL CRAFT ADVISORY UNTIL 6 AM HST TUESDAY FOR THE WINDIER WATERS AROUND MAUI COUNTY AND THE BIG ISLAND. && $$ DISCUSSION/MARINE...WROE AVIATION...BEDAL Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office This page is maintained voluntarily by the MKWC and the UHMET faculty, staff, and students. It was last modified on: Tue, Sep 21 2010 - 2314 UTC Send comments to: Ryan Lyman