FNUS73 KAPX 261310 FWSAPX SPOT FORECAST FOR BIG GULCH RX...USFS NATIONAL WEATHER SERVICE GAYLORD MI 910 AM EDT FRI MAR 26 2010 FORECAST IS BASED ON IGNITION TIME OF 1500 EDT ON MARCH 26. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...HIGH PRESSURE WILL MOVE INTO LOWER MICHIGAN THIS AFTERNOON. THIS WILL RESULT IN MOSTLY SUNNY SKIES...BUT COOL TEMPERATURES. VARIABLE WINDS UNDER 10 MPH WILL LIKELY BECOME SOUTHEAST THIS AFTERNOON AS A LAKE BREEZE DEVELOPS OFF OF LAKE HURON...AND PENETRATES JUST FAR ENOUGH INLAND TO IMPACT THE BURN SITE. THE MINIMUM AFTERNOON RELATIVE HUMIDITY WILL FALL TO AROUND 25 PERCENT. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (25 PERCENT OR LESS) TEMPERATURE.........33 AT IGNITION...MAX 36. MIN HUMIDITY........27 PERCENT AT IGNITION...MIN 24 PERCENT. WIND (20 FT)........NORTH WIND AROUND 5 MPH THIS MORNING...THEN BECOMING VARIABLE AROUND 5 MPH AFTER 1 PM...THEN BECOMING SOUTHEAST AROUND 5 MPH AFTER 4 PM. TRANSPORT WINDS.....NORTH 8 TO 17 MPH SHIFTING TO THE WEST 3 TO 6 MPH IN THE AFTERNOON. MIXING HEIGHT.......2500-3700 FT AGL INCREASING TO 4500 FT AGL AT IGNITION...AND REMAINING AROUND 4500 FT AGL LATE IN THE AFTERNOON. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH AT IGNITION...MAX 4. SMOKE DISPERSAL.....FAIR (200) AT IGNITION. MAX...GOOD (400). TIME (EDT) 3 PM 5 PM SKY (%).........13 22 WEATHER TYPE....NONE NONE TEMP............33 36 RH..............27 24 20 FT WIND......W 1 E 3 20 FT WIND GUST. 5 HAINES INDEX....4 4 SMOKE DISP......200 300 .TONIGHT... MIN TEMPERATURE.....17. MAX HUMIDITY........88 PERCENT. WIND (20 FT)........SOUTH AROUND 5 MPH. TRANSPORT WINDS.....SOUTH 7 TO 15 MPH. MIXING HEIGHT.......3100 FT AGL DECREASING TO 600-800 FT AGL IN THE LATE EVENING AND OVERNIGHT. HAINES INDEX........MIN 3. SMOKE DISPERSAL.....MIN POOR(100). TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM TEMP............34 31 26 23 22 19 RH..............29 37 46 54 62 77 20 FT WIND......SE 3 SE 4 S 5 S 6 S 6 S 6 20 FT WIND GUST.5 5 10 10 15 15 HAINES INDEX....4 4 4 4 3 3 SMOKE DISP......300 300 200 100 100 100 .SATURDAY... MAX TEMPERATURE.....49. MIN HUMIDITY........28 PERCENT. WIND (20 FT)........SOUTH WINDS 6 TO 10 MPH. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM TEMP............18 19 31 39 45 48 RH..............84 84 51 37 31 29 20 FT WIND......S 6 S 7 S 7 S 8 S 8 S 8 20 FT WIND GUST.15 15 15 20 20 20 $$ FORECASTER...BRUCE SMITH REQUESTED BY...BEN EBY TYPE OF REQUEST...PRESCRIBED .TAG 20100326.BIGGU.01/APX