000 FNUS52 KEYW 061116 FWFEYW FLORIDA KEYS FIRE WEATHER FORECAST NATIONAL WEATHER SERVICE KEY WEST FL 730 AM EDT FRI SEP 6 2002 .RED FLAG...NONE .SYNOPSIS...THROUGH SATURDAY AFTERNOON...A HIGH PRESSURE RIDGE WILL BUILD SOUTHWARD OVER THE FLORIDA PENINSULA...WHILE A LOW PRESSURE TROUGH DEVELOPS FROM EASTERN CUBA TO NORTHEAST OF THE BAHAMAS. .SMOKE DISPERSION DISCUSSION...EXPECT FAIR TO GOOD DISPERSION VALUES DURING THE DAY AND POOR VALUES AT NIGHT. .EXTENDED FORECAST...SATURDAY NIGHT THROUGH TUESDAY...THE HIGH PRESSURE RIDGE OVER THE FLORIDA PENINSULA WILL WEAKEN BY TUESDAY... AS LOW PRESSURE ORGANIZES NORTH OF THE BAHAMAS. EXPECT A CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH THE PERIOD...AND MAINLY EAST BREEZES UNDER 15 MPH. FLZ076>078-071200- MONROE LOWER KEYS-MONROE MIDDLE KEYS-MONROE UPPER KEYS- 730 AM EDT FRI SEP 6 2002 PARAMETER... TODAY TONIGHT SATURDAY CLOUD AMOUNT........MOSTLY CLOUDY MOSTLY CLOUDY PARTLY CLOUDY CHANCE PRECIP(%)....60 PERCENT 60 PERCENT 50 PERCENT PRECIP TYPE.........THUNDERSTORMS THUNDERSTORMS THUNDERSTORMS MAX/MIN TEMPS.......90 80 90 WIND DIRECTION......SOUTHEAST EAST EAST WIND SPEED MPH......10 10 10 PRECIP AMOUNT.......0.50 TO 1.00 0.25 TO .50 T TO 0.25 PRECIP BEGINS.......12 NOON 6 PM 1 PM PRECIP ENDS.........CONTINUING 6 AM CONTINUING PRECIP DURATION.....2 2 1 LIGHTNING FREQ......16-25 STRIKES 9-15 STRIKES 1-8 STRIKES REL HUMIDITY %......75 100 75 MIXING HEIGHT.......4200 800 4400 CEILING HEIGHT......8000 20000 NO CEILING TRANSPORT DIR.......SOUTHEAST EAST EAST TRANSPORT SPEED.....10 10 10 DISPERSION INDEX....38 9 39 $$ K. KASPER