056
FNUS73 KGRR 301408
FWSGRR

Spot Forecast for Bass Rx...MIDNR
National Weather Service Grand Rapids MI
1008 AM EDT Tue Apr 30 2024

Forecast is based on ignition time of 1400 EDT on April 30.
If conditions become unrepresentative, contact the National Weather
Service.

Please contact our office at (616) 949-5150, if you have questions
or concerns with this forecast.

.DISCUSSION...A dry westerly flow off of Lake MI will prevail today
leading to sunny skies.  The wind will be on the increase as the
mixing height deepens, peaking out during the burn.  Humidity levels
will drop steadily into the afternoon, lowering down into
in the 50 to 55 percent range in the middle part of the
afternoon.

.REST OF TODAY...

Sky/weather.........Sunny (0-10 percent).
Temperature.........59 at ignition...Max 66.
RH..................59 percent at ignition...Min 52 percent.
Wind (20 ft)........Winds west at 13 mph at ignition...otherwise
                    West winds 6 to 13 mph.
Mixing height.......2900 ft AGL at ignition...otherwise 2900 ft
                    AGL.
Mixing winds........West 13 to 18 mph decreasing to around 8 mph in
                    the evening.
Smoke dispersal.....530 /good/ at ignition. Max...530 /good/.
Haines Index........4 or low potential for large plume dominated
                    fire growth at ignition...max 4.

TIME (EDT)      2 PM   4 PM   6 PM   8 PM   10 PM  MIDNGT
Sky (%).........4      4      3      5      1      16
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............59     61     63     62     57     55
RH..............59     53     52     58     72     74
20 ft wind......W 13   W 12   W 8    SW 3   E 3    SE 6
20 ft wind gust.21     20     13     6      6      8
Mix hgt (ft)....2900   2600   2100   600    300    400
Mixing wind.....W 18   W 16   W 12   SW 6   SE 7   SE 9
Haines index....4      4      4      4      4      4
Smoke disprsl...530    420    240    30     20     40

.TONIGHT...

Sky/weather.........Mostly clear (20-30 percent) then becoming
                    mostly cloudy (60-70 percent).
Temperature.........Min 55.
RH..................Max 74 percent.
Wind (20 ft)........Light winds becoming southeast around 6 mph
                    through about 2 am, then shifting to the south
                    8 to 15 mph overnight.
Mixing height.......300 ft AGL.
Mixing winds........Southwest around 6 mph shifting to the
                    southeast 6 to 15 mph, then shifting to the
                    southwest 17 to 20 mph toward daybreak.
Smoke dispersal.....180 (fair) early in the evening decreasing to
                    20 (poor) late in the night.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

.WEDNESDAY...

Sky/weather.........Mostly sunny (30-40 percent).
Temperature.........Max 68.
RH..................Min 39 percent.
Wind (20 ft)........Southwest winds 16 to 18 mph shifting to the
                    west 8 to 15 mph.
Mixing height.......3300 ft AGL.
Mixing winds........West 22 to 23 mph decreasing to 17 to 23 mph
                    late in the day, then decreasing to around 13
                    mph in the evening.
Smoke dispersal.....150 (fair) early in the morning increasing to
                    780 (excellent) in the afternoon.
Haines Index........4 to 5 or low to moderate potential for large
                    plume dominated fire growth.

$$
Forecaster...Sekelsky
Requested by...Jeff Vasher
Type of request...PRESCRIBED
.TAG 2412786.0/GRR
.DELDT 04/30/24
.FormatterVersion 2.0.0
.EMAIL vasherj@michigan.gov