Spot Forecast
Issued by NWS Gaylord, MI
Issued by NWS Gaylord, MI
930 FNUS73 KAPX 291918 FWSAPX Spot Forecast for Curtis Pines Savannah...USFS National Weather Service Gaylord MI 318 PM EDT Wed May 29 2024 Forecast is based on ignition time of 1000 EDT on May 30. If conditions become unrepresentative... contact the National Weather Service. Please contact our office at (989)732-9306, if you have questions or concerns with this forecast. .DISCUSSION...Very dry air will remain over northern Michigan this week. The burn site will see light northerly winds at ignition. By early afternoon, a lake breeze from Lake Huron will result in a light northeast wind. That will become east by very late afternoon. The cool air off the lake will keep humidity levels higher than places further inland. Expect relative humidity to bottom out near 30 percent mid to late afternoon. .THURSDAY... Sky/weather.........Sunny (0-10 percent). Max temperature.....Around 68. Min humidity........31 percent. 20-foot winds.......Light winds becoming northeast around 5 mph late in the morning, then shifting to the east late in the afternoon. Transport winds.....North 8 to 14 mph. Mixing height.......3400-5300 ft AGL increasing to 4500-5600 ft AGL in the afternoon. Haines Index........5 or moderate potential for large plume dominated fire growth. Ventilation index...Good to excellent (364.0-769.0). TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........2 3 4 5 3 3 1 3 Weather cov..... Weather type.... Tstm cov........ Temp............59 62 64 66 66 67 68 66 RH..............45 39 35 33 33 32 31 33 20 ft wind dir..N N NE NE NE NE NE NE 20 ft wind spd..6 6 6 6 6 6 6 6 20 ft wind gust.12 12 14 14 14 14 14 14 Mix hgt (kft)...3.4 5.3 5.6 5.6 5.6 5.5 5.5 4.5 Haines index....5 5 5 5 5 5 5 5 Transp wind dir.N N N N N N NE N Transp wind spd.12 14 14 13 10 9 9 8 Vrate kt-ft.....386 725 769 714 582 510 510 364 Ventrate Cat....GD EXL EXL EXL GD GD GD GD .THURSDAY NIGHT... Sky/weather.........Clear (0-5 percent). Min temperature.....Around 40. Max humidity........85 percent. 20-foot winds.......East winds around 5 mph early in the evening becoming light. Transport winds.....Northeast around 8 mph shifting to the southwest 5 to 8 mph in the late evening and overnight. Mixing height.......1900-3200 ft AGL decreasing to 200-900 ft AGL early in the evening. Haines Index........5 or moderate potential for large plume dominated fire growth. Ventilation index...Poor to fair (12.0-258.0). TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........1 1 1 1 3 1 2 3 3 3 3 3 Weather cov..... Weather type.... Tstm cov........ Temp............65 63 60 55 52 49 48 46 45 43 42 40 RH..............34 35 42 51 54 61 60 65 68 73 76 82 20 ft wind dir..E E E S S S SW SW SW W W W 20 ft wind spd..6 6 6 3 3 3 2 2 2 2 2 2 20 ft wind gust.13 13 13 7 7 7 5 5 5 6 6 6 Mix hgt (kft)...3.2 1.9 0.9 0.4 0.3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 Haines index....5 5 5 5 5 5 5 5 5 5 5 5 Transp wind dir.NE E SE SE S S S SW SW SW SW SW Transp wind spd.8 6 6 5 5 6 6 6 6 7 7 8 Vrate kt-ft.....258 110 53 21 14 12 12 12 12 13 15 19 Ventrate Cat....FR PR PR PR PR PR PR PR PR PR PR PR .FRIDAY... Sky/weather.........Sunny (10-20 percent). Max temperature.....Around 75. Min humidity........32 percent. 20-foot winds.......Light winds becoming southwest 5 to 6 mph late in the morning. Transport winds.....Southwest 9 to 13 mph. Mixing height.......100-1200 ft AGL increasing to 4600-5400 ft AGL. Haines Index........5 or moderate potential for large plume dominated fire growth. Ventilation index...Poor to good (13.0-467.0) increasing to good to excellent (514.0-652.0) late in the afternoon. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky (%).........3 2 9 16 23 23 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ Temp............40 51 62 69 73 75 RH..............85 66 50 40 34 32 20 ft wind dir..SW SW SW SW SW S 20 ft wind spd..2 2 6 7 7 7 20 ft wind gust.7 7 12 15 15 16 Mix hgt (ft)....100 400 2300 4000 5000 5400 Haines index....5 5 5 5 5 5 Transport wind..SW 9 SW 10 SW 10 SW 10 SW 10 SW 13 Vrate kt-ft.....13 44 237 410 514 652 Ventrate Cat....POOR POOR FAIR GOOD GOOD EXNT $$ Forecaster...JZ Requested by...Corey K. Smith Type of request...PRESCRIBED .TAG 2415300.0/APX .DELDT 05/29/24 .FormatterVersion 2.0.0 .EMAIL corey.smith@usda.gov