Spot Forecast
Issued by NWS Gaylord, MI
Issued by NWS Gaylord, MI
176 FNUS73 KAPX 011818 FWSAPX Spot Forecast for National City SVE RX...USFS National Weather Service Gaylord MI 218 PM EDT Wed May 1 2024 Forecast is based on ignition time of 1411 EDT on May 01. 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...Gusty west winds continue this afternoon at the burn site with temperatures in the 70s and RHs falling to the upper 20s to near 30 percent. Good RH recovery overnight with diminishing winds. Increasing and thickening clouds expected on Thursday with eventually some showers arriving later in the day and especially Thursday night into Friday. Not quite as warm Thursday with initial northerly winds shifting more east-southeasterly during the afternoon. For an updated spot forecast overnight, please submit another request with a future date/time. .REST OF TODAY... Sky/weather.........Mostly sunny (25-35 percent). Max temperature.....Around 73. Min humidity........29 percent. 20-foot winds.......West winds around 12 mph with gusts to around 31 mph. Transport winds.....West 28 to 31 mph. Mixing height.......5900-6800 ft AGL. Haines Index........5 or moderate potential for large plume dominated fire growth. Ventilation index...Excellent (1637.0). TIME (EDT) 2PM 3PM 4PM 5PM Sky (%).........37 18 18 18 Weather cov..... Weather type.... Tstm cov........ Temp............71 72 72 71 RH..............44 35 30 29 20 ft wind dir..SW W W W 20 ft wind spd..14 15 15 15 20 ft wind gust.22 31 31 31 Mix hgt (kft)...5.9 6.8 6.7 5.9 Haines index....5 5 5 5 Transp wind dir.W W W W Transp wind spd.31 31 30 28 Vrate kt-ft.....1823212120181637 Ventrate Cat....EXL EXL EXL EXL .TONIGHT... Sky/weather.........Partly cloudy (25-35 percent) then becoming mostly cloudy (60-70 percent). Min temperature.....Around 42. Max humidity........96 percent. 20-foot winds.......Northwest winds 5 to 12 mph. Gusts up to 29 mph early in the evening. Transport winds.....West 21 to 26 mph becoming northwest 10 to 16 mph in the late evening and overnight. Mixing height.......4700-5500 ft AGL decreasing to 700-1100 ft AGL. Haines Index........3 to 5 or very low to moderate potential for large plume dominated fire growth. Ventilation index...Very good (1146.0) decreasing to poor (68.0). TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........17 22 27 27 26 41 47 64 69 63 58 62 Weather cov..... Weather type.... Tstm cov........ Temp............69 67 61 58 55 54 51 50 49 47 45 44 RH..............31 33 42 51 61 66 77 77 80 83 89 89 20 ft wind dir..W W W NW NW NW NW NW NW NW NW NW 20 ft wind spd..14 14 14 8 8 8 6 6 6 6 6 6 20 ft wind gust.29 29 29 16 16 16 10 10 10 10 10 10 Mix hgt (kft)...5.5 4.7 3.3 1.4 1.0 0.9 1.1 1.0 0.8 0.8 0.8 0.7 Haines index....5 5 3 3 3 3 3 3 4 4 4 4 Transp wind dir.W W W NW NW NW NW NW NW W W NW Transp wind spd.26 24 21 16 15 15 13 13 12 12 12 10 Vrate kt-ft.....14471146677 224 149 131 140 129 94 96 89 68 Ventrate Cat....VGD VGD GD PR PR PR PR PR PR PR PR PR .THURSDAY... Sky/weather.........Partly sunny (50-60 percent). Max temperature.....Around 64. Min humidity........44 percent. 20-foot winds.......Northwest winds around 5 mph early in the morning becoming light, then becoming southeast 5 to 6 mph in the afternoon. Transport winds.....North 6 to 12 mph shifting to the southeast 6 to 7 mph early in the afternoon, then increasing to 8 to 9 mph late in the afternoon. Mixing height.......600-2300 ft AGL increasing to 2300-3300 ft AGL in the afternoon. Haines Index........4 or low potential for large plume dominated fire growth. Ventilation index...Poor (56.0). TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky (%).........50 62 52 39 63 67 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ Temp............44 44 52 58 62 62 RH..............89 89 66 55 48 46 20 ft wind dir..NW NW N E E SE 20 ft wind spd..6 6 5 7 7 7 20 ft wind gust.10 10 8 10 10 10 Mix hgt (ft)....600 1300 1800 2600 3300 2700 Haines index....4 4 4 4 4 4 Transport wind..N 12 N 10 N 7 E 6 SE 8 S 9 Vrate kt-ft.....72 135 123 152 267 248 Ventrate Cat....POOR POOR POOR POOR POOR POOR $$ Forecaster...MJG Requested by...Corey Smith Type of request...PRESCRIBED .TAG 2412945.0/APX .DELDT 05/01/24 .FormatterVersion 2.0.0 .EMAIL corey.smith@usda.gov