[Printable]
Links in the discussion text will open a (small) new browser window with more information inside.
A more complete Weather Glossary is Available Here
000 FXUS62 KMFL 240750 AFDMFL AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MIAMI FL 350 AM EDT WED SEP 24 2008 CURRENTLY...THE SURFACE TROUGH HAS MOVED INTO THE FLA STRAITS AND A WEAK FRONTAL BOUNDARY IS NEAR LAKE OKEECHOBEE. BOTH BOUNDARIES MOV -ING S WITH A NE WIND MOVING SCATTERED SHOWERS SW THROUGH THE ATLC WATERS AND ONSHORE WITH THE SHOWERS DISSIPATING WELL INLAND FROM THE COAST. DISCUSSION...UPPER LOW HAS CLOSED OFF OVER THE ATLC JUST E OF THE COASTAL CAROLINAS. THE SYSTEM WILL MOVE ONSHORE INTO THE SE U.S. TOMORROW BEFORE GRADUALLY WEAKENING AND MOVING NE THIS WEEKEND. THE SURFACE LOW ASSOCIATED WITH THE UPPER LOW WILL REMAIN OFF OF THE SE U.S. COAST TODAY AND MOST OF THU BEFORE MOVING ONSHORE. THE DISTUR -BANCE OVER HISPANIOLA WILL MOVE NORTHWARD...STRENGTHEN AND ABSORB THE SURFACE LOW OVER THE SE U.S. THE ATLC SUBTROPICAL RIDGE SE OF THE AREA WILL BUILD BACK TOWARD S FLA OVER THE WEEKEND AND INTO NEXT WEEK. SHORT TERM...TODAY THROUGH FRIDAY...UPPER TROUGH AXIS HAS MOVED E OF THE FLA PENINSULA AND SUBSIDENT DRY AIR ALOFT IS BEING PULLED SOUTH -WARD OVER THE FLA PENINSULA. WINDS WILL BE PERSISTENT NE AND THE CHANCES OF RAIN WILL BE MINIMAL...AFFECTING MAINLY THE ATLC AND ADJACENT E COAST ZONES TODAY THROUGH THU WITH SOME SHOWERS WITH POSSIBLY FRI NIL PRECIPITATION ALL AREAS. MAX TEMPS A LITTLE COOLER E COAST ZONES BUT NEARING NORMS ON THE W. WITH THE WEAK FRONTAL BOUNDARY MOVING THROUGH TODAY...MIN TEMPS MAY FALL NEAR NORMS FOR THE COASTAL COMMUNITIES BUT THE INTERIOR MAY SEE THE MID TO UPPER 60S FOR THU/FRI MORNINGS. && .EXTENDED...SAT THROUGH TUE...AS THE ATLC SUBTROPICAL RIDGE BUILDS NW...DEEP-LAYER MOISTURE BEGINS TO MOVE BACK TOWARD S FLA. SOME E COAST SHOWERS MAY OCCUR ALONG THE ATLC COAST FRI NIGHT ON THE EAST -ERLY FLOW WITH INCREASED CHANCES OF RAIN ACROSS S FLA BEGINNING SAT INTO NEXT WEEK. DEEPER MOISTURE AND LESS STABILITY ALOFT LEAD TO INCREASED CHANCES OF THUNDER MON AND TUE. && .MARINE...NORTHERLY WINDS REACHING CAUTION CRITERIA OVER LAKE OKEE ...ATLC AND OUTER GULF WATERS TODAY AND INTO TONIGHT. IN THE GULF STREAM...SEAS HAVE INCREASED ABOVE SMALL CRAFT ADVISORY CRITERIA DUE TO THE WINDS BUT ALSO DUE TO A NE SWELL GENERATED BY THE STRONG LOW PRESSURE OFF OF THE SE U.S. COAST. THIS SWELL WILL REACH" onClick="return popup(this, 'notes')">REACH 3 TO 5 FEET OFF OF PALM BEACH TODAY AND 1 TO 3 FEET ELSEWHERE. THE SWELL WILL CONTINUE TO INCREASE TO 6 TO 8 FEET OFF OF PALM BEACH AND 3 TO 5 FEET ELSEWHERE TONIGHT INTO THU. MARINE CONDITIONS DETERIORATING FOR MARINERS BUT FOR BEACH GOERS AS WELL. A HIGH RISK OF RIP CURRENTS WILL OCCUR TODAY THROUGH THU AT THE ATLC BEACHES AND WITH THE INCREASED SWELLS/WINDS WAVES...BREAKERS UP TO 10 FEET WILL BE POSSIBLE...ESPECIALLY ALONG THE PALM BEACH COAST. A HIGH SURF ADVISORY WILL BE ISSUED FOR PALM BEACH COUNTY WHICH MAY BE EXPANDED TO INCLUDE BROWARD AND MIAMI-DADE COUNTIES...PENDING HOW THE SWELLS ACTUALLY DEVELOP. && FIRE WEATHER...LOWER DEWPOINTS EXPECTED THU AND WITH MINIMUM RH VALUES DROPPING INTO THE 40S IN GLADES AND POSSIBLY HENDRY COUNTIES. && .PRELIMINARY POINT TEMPS/POPS... WEST PALM BEACH 86 73 86 71 / 20 20 10 10 FORT LAUDERDALE 87 76 86 75 / 20 20 10 10 MIAMI 88 75 87 74 / 20 20 10 10 NAPLES 89 72 87 70 / 10 0 10 0 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...HIGH SURF ADVISORY COASTAL PALM BEACH COUNTY TODAY THROUGH 8 AM FRIDAY. AM...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS FROM 5 AM TODAY TO 8 AM EDT FRIDAY FOR AMZ650-AMZ651-AMZ670-AMZ671. GM...NONE. && $$ LONG TERM...15/JR SHORT TERM/AVIATION...04/AT