630
FNUS73 KGRR 051348
FWSGRR

Spot Forecast for Berm burn...DMVA
National Weather Service Grand Rapids MI
948 AM EDT Tue Aug 5 2025

Forecast is based on ignition time of 1100 EDT on August 05.
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...

Light easterly winds to around 5 to 10 mph are expected today with
mixing heights around 6000 to 7000 feet during the afternoon.
Minimum relative humidity values will largely be in the 40s but
could dip into the 30s toward the later portion of the afternoon
if mixing heights increase. Cumulus clouds around 6000 to 7000
feet are expected to continue through the day.

.REST OF TODAY...

Sky/weather.........Mostly sunny (25-35 percent). Areas of smoke.
Temperature.........75 at ignition...Max 83.
RH..................58 percent at ignition...Min 45 percent.
Wind (20 ft)........Winds east at 7 mph at ignition...otherwise
                    East winds 5 to 7 mph.
Mixing height.......2600 ft AGL at ignition...otherwise 7000 ft
                    AGL.
Mixing winds........East 7 to 13 mph.
Smoke dispersal.....270 /fair/ at ignition. Max...730 /excellent/.

TIME (EDT)      7 AM   9 AM   11 AM  1 PM   3 PM   5 PM
Sky (%).........23     28     36     32     22     47
Weather cov.....AREAS  AREAS  AREAS
Weather type....SMOKE  SMOKE  SMOKE  NONE   NONE   NONE
Tstm cov........
Temp............75     79     81     81     79     74
RH..............58     47     46     49     54     66
20 ft wind......E 7    E 7    E 6    E 6    E 5    E 2
20 ft wind gust.12     15     16     14     12     7
Mix hgt (ft)....2600   5800   6800   7000   3500   400
Mixing wind.....E 10   E 13   E 10   E 8    E 7    NE 7
Smoke disprsl...270    730    710    560    240    30

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent) then becoming
                    mostly clear (15-25 percent).
Temperature.........Min 61.
RH..................Max 97 percent.
Wind (20 ft)........Light winds.
Mixing height.......400 ft AGL.
Mixing winds........East 5 to 8 mph.
Smoke dispersal.....20 (poor).

.WEDNESDAY...

Sky/weather.........Mostly sunny (25-35 percent).
Temperature.........Max 84.
RH..................Min 56 percent.
Wind (20 ft)........Light winds becoming southeast 5 to 6 mph, then
                    becoming light in the evening.
Mixing height.......5600 ft AGL.
Mixing winds........Southeast 5 to 7 mph becoming 6 to 7 mph late
                    in the day.
Smoke dispersal.....20 (poor) early in the morning increasing to
                    380 (good) in the afternoon.

$$
Forecaster...Hansen
Requested by...Michele Richards
Type of request...PRESCRIBED
.TAG 2519268.0/GRR
.DELDT 08/05/25
.FormatterVersion 2.0.0
.EMAIL richardsm2@michigan.gov