FNUS73 KAPX 121401 FWSAPX SPOT FORECAST FOR OHS KNUTH BURN...USFS NATIONAL WEATHER SERVICE GAYLORD MI 1001 AM EDT SUN APR 12 2009 FORECAST IS BASED ON IGNITION TIME OF 1600 EDT ON APRIL 12. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...HIGH PRESSURE NEAR THE SOUTH TIP OF JAMES BAY CANADA WILL PROVIDE CONTINUED SUNNY SKIES TODAY. EAST FLOW OFF LAKE HURON WILL MAINTAIN COOLER TEMPERATURES AND HIGHER DEW POINTS NEAR THE LAKE HURON SHORELINE THIS AFTERNOON (WHEN COMPARED TO LOCATIONS FARTHER INLAND). AS A RESULT...MINIMUM RELATIVE HUMIDITIES NEAR THE SPOT WILL FALL TO ONLY 50 TO 55 PERCENT...WHILE LOCATIONS FARTHER INLAND FALL TO BELOW 25 PERCENT. .TODAY... SKY/WEATHER.........SUNNY (0-5 PERCENT). TEMPERATURE.........41 AT IGNITION...MAX 41. RH..................53 PERCENT AT IGNITION...MIN 53 PERCENT. WIND (20 FT)........WINDS EAST AT 8 MPH AT IGNITION...OTHERWISE EAST WINDS 5 TO 9 MPH WITH GUSTS TO AROUND 18 MPH IN THE LATE MORNING AND AFTERNOON. TRANSPORT WINDS.....NORTHEAST 3 TO 12 MPH SHIFTING TO EAST AROUND 8 MPH LATE IN THE AFTERNOON. MIXING HEIGHT.......3100 FT AGL AT IGNITION...OTHERWISE 2200-3700 FT AGL. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH AT IGNITION...MAX 4. SMOKE DISPERSAL.....POOR (100) AT IGNITION. MAX...GOOD (400). TIME (EDT) 4 PM SKY (%).........0 WEATHER COV.....NONE WEATHER TYPE....NONE TEMP............41 RH..............53 20 FT WIND......E 7 20 FT WIND GUST.15 HAINES INDEX....4 SMOKE DISP......100 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). TEMPERATURE.........MIN 19. RH..................MAX 71 PERCENT. WIND (20 FT)........EAST WINDS 5 TO 6 MPH EARLY IN THE EVENING BECOMING LIGHT. SMOKE DISPERSAL.....MIN POOR(0). TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........0 0 0 0 15 15 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............38 33 28 25 24 23 RH..............54 56 58 63 66 67 20 FT WIND......E 6 E 3 SE 1 SE 0 S 0 S 0 20 FT WIND GUST.15 5 SMOKE DISP......100 100 0 0 0 0 .MONDAY... SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT) THEN BECOMING PARTLY CLOUDY (40-50 PERCENT). TEMPERATURE.........MAX 45. RH..................MIN 35 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING EAST 6 TO 12 MPH WITH GUSTS TO AROUND 25 MPH LATE IN THE MORNING. SMOKE DISPERSAL.....MAX FAIR(200). TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........15 29 29 29 47 47 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............23 27 36 42 43 43 RH..............71 65 45 36 35 36 20 FT WIND......S 0 SE 0 E 4 E 6 E 7 E 11 20 FT WIND GUST. 10 15 15 25 SMOKE DISP......0 100 100 200 200 200 $$ FORECASTER...BRUCE SMITH REQUESTED BY...BSTEARNS TYPE OF REQUEST...PRESCRIBED .TAG 20090412.OHSKN.01/APX