158
FNUS73 KMQT 171012
FWSMQT
SPOT FORECAST FOR AU TRAIN RX...USFS
NATIONAL WEATHER SERVICE MARQUETTE MI
612 AM EDT SUN MAY 17 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 EDT ON MAY 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
THE COMBINATION OF INCREASING CLOUDS AND WINDS OFF OF LAKE SUPERIOR
WILL LIMIT MIXING TODAY, RESULTING IN HUMIDITY STAYING AT OR ABOVE
40% AND POOR VENTILATION. GULF MOISTURE WILL PUSH INTO THE AREA TONIGHT
WITH HIGH HUMIDITY EXPECTED THROUGH TUESDAY. MULTIPLE ROUNDS OF
SHOWERS AND THUNDERSTORMS ARE EXPECTED LATE THIS AFTERNOON THROUGH
TUESDAY. SOME OF THE THUNDERSTORMS COULD BE STRONG TO SEVERE, WITH
STRONG DAMAGING WINDS, LARGE HAIL, FREQUENT LIGHTNING AND HEAVY RAINFALL.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF
RAIN SHOWERS LATE IN THE AFTERNOON.
CHANCE OF PCPN......30 PERCENT.
CHANCE OF THUNDER...6 PERCENT.
TEMPERATURE.........40 AT IGNITION...MAX 62.
RH..................84 PERCENT AT IGNITION...MIN 48 PERCENT.
DEWPOINT............37 INCREASING TO 40 LATE IN THE AFTERNOON.
33-FOOT WINDS.......WINDS NORTH AT 7 MPH AT IGNITION...OTHERWISE
NORTHEAST WINDS 6 TO 10 MPH.
20-FOOT WINDS.......NORTHEAST WINDS 5 TO 8 MPH.
MIXING HEIGHT.......400 FT AGL AT IGNITION...OTHERWISE 400-1300 FT
AGL.
VENTILATION INDEX...POOR (25) AT IGNITION. MAX...POOR (103.0).
RAINFALL AMOUNT.....0.04 INCHES.
CEILING (KFT).......23 DECREASING TO 11.
TIME (EDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........29 39 56 56 62 72 74 80 75 76 75
WEATHER COV..... SCH CHC
WEATHER TYPE.... RW RW
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 10 10 20 30
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 10
TEMP............40 41 43 47 49 51 51 55 56 56 60
DEWPOINT........35 36 36 37 37 38 38 39 39 39 40
RH..............84 81 77 68 62 60 61 54 52 53 48
33 FT WIND DIR..N N NE NE NE NE NE NE NE NE NE
33 FT WIND SPD..7 7 8 8 8 10 10 10 10 10 10
20 FT WIND DIR..N N NE NE NE NE NE NE NE NE NE
20 FT WIND SPD..6 6 6 6 6 8 8 8 8 8 8
WIND GUST....... 10 10 10 11 11 11 10 10 10
MIX HGT (KFT)...0.4 1.0 1.0 1.1 1.1 1.1 1.1 1.3 1.0 0.8 0.6
VINDX KT-FT/100.3 7 8 10 10 10 9 10 8 6 4
CEILING (KFT)...25 25 24 25 25 24 23 19 19 15 11
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). RAIN SHOWERS
LIKELY AND CHANCE OF THUNDERSTORMS.
CHANCE OF PCPN......70 PERCENT.
CHANCE OF THUNDER...35 PERCENT.
TEMPERATURE.........MIN 49.
RH..................MAX 94 PERCENT.
DEWPOINT............41 INCREASING TO 52.
33-FOOT WINDS.......EAST WINDS 7 TO 13 MPH SHIFTING TO THE
SOUTHEAST 14 TO 16 MPH WITH GUSTS TO AROUND 29
MPH OVERNIGHT. GUSTY AND ERRATIC WINDS
POSSIBLE NEAR THUNDERSTORMS.
20-FOOT WINDS.......SOUTHEAST WINDS 7 TO 13 MPH WITH GUSTS TO
AROUND 23 MPH.
MIXING HEIGHT.......500-800 FT AGL.
VENTILATION INDEX...POOR (43.0).
RAINFALL AMOUNT.....0.18 INCHES.
CEILING (KFT).......7.7 DECREASING TO 5.9 EARLY IN THE EVENING,
THEN DECREASING TO 3.9 EARLY IN THE EVENING
DECREASING TO 2.3 LATE IN THE EVENING
DECREASING TO 1.3 DECREASING TO 0.8 LATE IN THE
EVENING DECREASING TO 0.5 INCREASING TO 0.6
OVERNIGHT INCREASING TO 0.9 INCREASING TO 1.3
AFTER 3 AM.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........80 85 92 94 81 80 81 76 83 74 69 79
WEATHER COV.....CHC CHC LKY LKY LKY LKY LKY LKY CHC CHC CHC CHC
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH CHC CHC CHC CHC CHC CHC CHC
CHC OF PCPN (%).30 40 60 60 60 70 60 60 40 40 40 50
CHC OF THDR (%).10 10 20 20 20 40 40 40 30 30 30 30
TEMP............57 57 56 53 52 52 53 51 53 53 54 55
DEWPOINT........40 41 43 42 43 43 47 48 49 50 52 52
RH..............53 55 61 66 70 73 80 89 88 90 94 90
33 FT WIND DIR..E E E SE SE SE SE SE SE S S S
33 FT WIND SPD..8 8 8 13 13 13 16 16 16 16 16 16
20 FT WIND DIR..E E E SE SE SE SE SE SE S S S
20 FT WIND SPD..6 6 6 10 10 10 13 13 13 13 13 13
WIND GUST.......12 12 12 18 18 18 22 22 22 23 23 23
MIX HGT (KFT)...0.8 0.6 0.6 0.6 0.5 0.5 0.5 0.5 0.6 0.5 0.6 0.5
VINDX KT-FT/100.6 4 7 6 6 8 7 8 10 10 11 10
CEILING (KFT)...7.7 5.9 3.9 2.3 1.3 0.8 0.5 0.6 0.6 0.9 1.3 1.6
MONDAY
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE MORNING,
BECOMING LIKELY IN THE AFTERNOON. A FEW
THUNDERSTORMS COULD BE SEVERE DURING THE
AFTERNOON WITH LARGE HAIL, DAMAGING WINDS
AND HEAVY RAINFALL.
CHANCE OF PCPN......80 PERCENT.
CHANCE OF THUNDER...35 PERCENT.
TEMPERATURE.........MAX 76.
RH..................MIN 58 PERCENT.
DEWPOINT............55 INCREASING TO 57 IN THE AFTERNOON.
33-FOOT WINDS.......SOUTH WINDS 10 TO 16 MPH WITH GUSTS TO AROUND
28 MPH. GUSTY AND ERRATIC WINDS POSSIBLE NEAR
THUNDERSTORMS.
20-FOOT WINDS.......SOUTH WINDS 8 TO 13 MPH WITH GUSTS TO AROUND 22
MPH.
MIXING HEIGHT.......500-1800 FT AGL.
VENTILATION INDEX...POOR TO FAIR (60.0-272.0).
RAINFALL AMOUNT.....0.29 INCHES.
CEILING (KFT).......1.8 INCREASING TO 2.3 EARLY IN THE MORNING.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........81 84 76 74 74 68 73 85 91 78 76 78
WEATHER COV.....CHC CHC CHC CHC CHC CHC CHC LKY DEF DEF DEF DEF
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW
TSTM COV........CHC CHC SCH SCH SCH SCH SCH SCH CHC CHC CHC CHC
CHC OF PCPN (%).50 50 40 40 40 40 50 70 80 80 80 80
CHC OF THDR (%).30 30 20 20 20 20 20 20 30 30 30 40
TEMP............56 56 57 60 62 66 69 69 71 74 70 68
DEWPOINT........53 53 53 55 57 57 58 59 59 58 57 56
RH..............91 91 88 85 81 75 68 69 67 58 65 65
33 FT WIND DIR..S S S S S S S S S SW SW SW
33 FT WIND SPD..16 16 16 14 14 14 13 13 13 13 13 13
20 FT WIND DIR..S S S S S S S S S SW SW SW
20 FT WIND SPD..13 13 13 11 11 11 10 10 10 10 10 10
WIND GUST.......22 22 22 19 19 19 18 18 18 17 17 17
MIX HGT (KFT)...0.5 0.7 0.8 1.0 1.0 1.0 1.2 1.8 1.3 1.0 0.6 0.5
VINDX KT-FT/100.8 12 14 15 17 17 20 27 21 16 8 6
CEILING (KFT)...1.8 2.1 2.3 2.3 2.3 2.3
FORECASTER...NJL
REQUESTED BY...MITCH GLENN RXB2 HIAWATHA NF
TYPE OF REQUEST...PRESCRIBED
.TAG 2613469.4/MQT
.DELDT 05/17/26
.FORMATTERVERSION 2.0.0
.EMAIL MITCHELL.GLENN@USDA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page