FNUS72 KMFL 171233 FWSMFL SPOT FORECAST FOR CALSTONES NATIONAL WEATHER SERVICE MIAMI FL 733 AM EST WED FEB 17 2010 IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER SERVICE. SPOT FORECAST FOR CALSTONE BURN...NPS-BIG CYPRESS NATL PRESERVE NATIONAL WEATHER SERVICE MIAMI FL 731 AM EST WED FEB 17 2010 DISCUSSION...A DRY AIRMASS WILL REMAIN ACROSS SOUTH FLORIDA TODAY AND THURSDAY. RELATIVE HUMIDITY AT THE BURN SITE MAY FALL INTO THE MID 40S FOR A FEW HOURS THIS AFTERNOON, HOWEVER RELATIVE HUMIDITIES BELOW 35 PERCENT FOR MORE THAN 4 HOURS IS NOT EXPECTED. A REINFORCING COLD FRONT IS EXPECTED TO MOVE THROUGH SOUTH FLORIDA EARLY THURSDAY MORNING WITH AN EVEN DRIER AIRMASS. THIS WILL LIKELY PRODUCE RED FLAG CONDITIONS ACROSS THE AREA. THEREFORE A FIRE WEATHER WATCH HAS BEEN ISSUED FOR THURSDAY. FRIDAY WILL ALSO LIKELY BE ANOTHER DRY DAY. TODAY AND THURSDAY THE NORTHWEST FLOW WILL PRODUCE GENERALLY GOOD DISPERSION VALUES, HOWEVER BY FRIDAY THE RIDGE OF HIGH PRESSURE WILL BE NEARLY OVERHEAD WITH LIGHT WINDS EXPECTED PRODUCING POOR TO FAIR DISPERSION VALUES. FOR PLANNED IGNITION TIME OF 0750 AM EST 02/17/10 ...FIRE WEATHER WATCH IN EFFECT THURSDAY AFTERNOON... ___________________________________________________________________ FORECAST FOR WEDNESDAY TIME(EST) 9AM NOON 3PM 6PM ___________________________________________________________________ SKY/WX............... MOCLR PTCLDY PTCLDY PTCLDY TEMP (F)............. 45 59 65 57 DEW PT (F)........... 44 42 45 43 RH (%)............... 96 55 47 60 20 FT WIND (MPH)..... N-3 NW-5 NW-8 NW-6 MIXING HGT (FT, AGL). 1000 1700 2400 2400 TRANSPORT WIND (MPH). NW-6 NW-11 W-16 NW-12 LAL.................. 1 1 1 1 LDSI................. 9 25 49 38 LVORI................ 6 2 1 1 ___________________________________________________________________ OUTLOOK FOR WEDNESDAY NIGHT TIME(EST) 9PM 12AM 3AM 6AM ___________________________________________________________________ SKY/WX............... PTCLDY PTCLDY PTCLDY PTCLDY TEMP (F)............. 48 43 41 39 DEW PT (F)........... 43 41 40 39 RH (%)............... 83 92 96 99 20 FT WIND (MPH)..... NW-4 NW-4 NW-4 N-4 LAL.................. 1 1 1 1 LDSI................. 4 4 4 3 LVORI................ 4 6 6 9 ___________________________________________________________________ OUTLOOK FOR THURSDAY AFTERNOON TIME(EST) 9AM NOON 3PM 6PM ___________________________________________________________________ SKY/WX............... PTCLDY PTCLDY PTCLDY PTCLDY TEMP (F)............. 45 61 67 58 DEW PT (F)........... 41 38 37 38 RH (%)............... 87 43 33 48 20 FT WIND (MPH)..... N-3 N-5 NW-6 NW-5 MIXING HGT (FT, AGL). 1200 2200 3200 2400 TRANSPORT WIND (MPH). NW-6 NW-10 NW-13 NW-10 LAL.................. 1 1 1 1 LDSI................. 11 29 54 31 LVORI................ 6 2 1 1 NO WX = NO WEATHER MOCLR = MOSTLY CLEAR SHRA = SHOWERS PTCLDY = PARTLY CLOUDY TSRA = THUNDERSTORMS MOCLDY = MOSTLY CLOUDY CLR = CLEAR CLDY = CLOUDY $$ $$ REQUESTED BY...JUSTIN TURNBO REASON FOR REQUEST...UNDER THE INTERAGENCY AGREEMENT FOR METEOROLOGICAL SERVICES (USFS, BLM, NPS, U