180
FNUS73 KMQT 191047
FWSMQT

Spot Forecast for Muskrat Lake Rx...MI DNR
National Weather Service Marquette MI
647 AM EDT Mon May 19 2025

Forecast is based on ignition time of 1300 EDT on May 19.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...High pressure ridging from a Hudson Bay high keeps us
dry early this week, although a low from the Central Plains may sneak
in a light rain shower or two Tuesday evening. While the high
pressure ridging is expected to bring RHs down to 30% or lower today
and Tuesday, given that we are getting Canadian air, high
temperatures should struggle to get to 60 today and Tuesday. Even
though high-level clouds are moving in from the southwest, do not
expect an good RH recovery for the spot, as the max RH tonight is
only projected to get up into the 60 percents. I do question if the
marine layer from Green Bay will come into play today and Tuesday.
However, with winds coming from the northeast this morning before
becoming east-northeast this afternoon, we will probably still get
down to 30% RH this afternoon before we see temperatures fall and RHs
rebound late this afternoon. Gustier winds are expected Tuesday in
comparison to today.

.REST OF TODAY...

Sky/weather.........Partly sunny (50-60 percent).
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Temperature.........51 at ignition...Max 57.
RH..................41 percent at ignition...Min 30 percent.
Dewpoint............26.
33-foot winds.......Winds east at 10 mph at ignition...otherwise
                    East winds 9 to 12 mph.
20-foot winds.......East winds 7 to 10 mph.
Mixing height.......3800 ft AGL at ignition...otherwise 3600-3900
                    ft AGL.
Ventilation index...Good (457) at ignition. Max...good (502.0).
Rainfall amount.....0.00 inches.
Ceiling (kft).......2.1 increasing to 22.

TIME (EDT)      1PM 2PM 3PM 4PM 5PM
Sky (%).........56  49  54  55  60
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0
Chc of thdr (%).0   0   0   0   0
Temp............51  53  54  56  57
Dewpoint........28  27  27  26  25
RH..............41  37  35  32  30
33 ft wind dir..E   E   E   E   E
33 ft wind spd..10  10  12  12  12
20 ft wind dir..E   E   E   E   E
20 ft wind spd..8   8   10  10  10
Wind gust.......12  12  14  14  14
Mix hgt (kft)...3.8 3.9 3.9 3.9 3.6
VIndx kt-ft/100.46  47  47  50  50
Ceiling (kft)...2.1 2.4 4.4 22  24

.TONIGHT...

Sky/weather.........Mostly cloudy (55-65 percent) then becoming
                    partly cloudy (35-45 percent).
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Temperature.........Min 38.
RH..................Max 66 percent.
Dewpoint............27.
33-foot winds.......Northeast winds 6 to 12 mph.
20-foot winds.......Northeast winds 5 to 10 mph.
Mixing height.......2300-3300 ft AGL decreasing to 500-1300 ft AGL
                    in the late evening and overnight.
Ventilation index...Poor to good (58.0-430.0).
Rainfall amount.....0.00 inches.
Ceiling (kft).......25.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........66  66  52  40  49  36  29  37  43  49  50  49
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............54  53  53  49  47  45  43  42  40  40  40  39
Dewpoint........26  27  28  27  27  27  26  26  25  26  28  29
RH..............34  36  38  42  46  49  51  53  56  58  61  66
33 ft wind dir..E   E   E   NE  NE  NE  NE  NE  NE  NE  NE  NE
33 ft wind spd..12  12  12  9   9   9   7   7   7   7   7   7
20 ft wind dir..E   E   E   NE  NE  NE  NE  NE  NE  NE  NE  NE
20 ft wind spd..10  10  10  7   7   7   6   6   6   6   6   6
Wind gust.......14  14  14  13  13  13  12  12  12  12  12  12
Mix hgt (kft)...3.3 2.8 2.3 1.3 0.9 0.6 0.6 0.5 0.6 0.6 0.6 0.7
VIndx kt-ft/100.43  42  30  15  11  7   6   6   6   6   6   8
Ceiling (kft)...25  25  25  25  25  25  25  25  25  25  25  25

.TUESDAY...

Sky/weather.........Partly sunny (60-70 percent). Slight chance of
                    rain showers late in the afternoon.
Chance of pcpn......20 percent.
Chance of thunder...0 percent.
Temperature.........Max 54.
RH..................Min 34 percent.
33-foot winds.......East winds 8 to 16 mph with gusts to around 29
                    mph.
20-foot winds.......East winds 6 to 13 mph with gusts to around 23
                    mph.
Rainfall amount.....0.00 inches.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........44  60  54  62  70  64  82  84  76  75  79  85
Weather cov.....                                            SCH
Weather type....                                            RW
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   10  10  10  10  10  10  20
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............40  41  42  44  46  48  49  50  51  52  53  53
RH..............64  62  58  53  48  43  41  38  36  35  34  34
33 ft wind dir..E   E   E   E   E   E   E   E   E   E   E   E
33 ft wind spd..12  12  12  14  14  14  16  16  16  16  16  16
20 ft wind dir..E   E   E   E   E   E   E   E   E   E   E   E
20 ft wind spd..10  10  10  11  11  11  13  13  13  13  13  13
Wind gust.......18  18  18  20  20  20  22  22  22  23  23  23

$$
Forecaster...TAP
Requested by...Keith Murphy
Type of request...PRESCRIBED
.TAG 2514219.1/MQT
.DELDT 05/19/25
.FormatterVersion 2.0.0
.EMAIL murphyk1@michigan.gov