596
FNUS73 KGRR 011031
FWSGRR

Spot Forecast for Bass Rx...MI DNR
National Weather Service Grand Rapids MI
631 AM EDT Wed May 1 2024

Forecast is based on ignition time of 1200 EDT on May 01.
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...
Clouds and the few rain showers around the burn site will quickly
move out by 9 am this morning. Winds will become gusty this afternoon
with gusts of 30 to 35 mph expected. Dew points look to rise this morning,
then mix out and become quite dry quickly this afternoon. RHs will not
drop quite as much here as the inland burn due to this site being closer
to the lake.

.REST OF TODAY...

Sky/weather.........Becoming Mostly sunny (35-45 percent).
Temperature.........66 at ignition...Max 70.
RH..................60 percent at ignition...Min 38 percent.
Wind (20 ft)........Winds west at 14 to 18 mph with gusts 30 to 35 mph.
Mixing height.......3000 ft AGL at ignition...otherwise 3500 ft
                    AGL.
Mixing winds........West 30 to 35 mph decreasing in the evening.
Smoke dispersal.....900 /excellent/ at ignition. Max...1100 /excellent/.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth at ignition...max 5.

TIME (EDT)      NOON   2 PM   4 PM   6 PM   8 PM   10 PM
Sky (%).........49     28     29     29     29     29
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............66     67     69     67     64     56
RH..............60     56     40     45     48     64
20 ft wind......W 18   W 18   W 18   W 14   W 10   W 3
20 ft wind gust.30     32     35     24     12     6
Mix hgt (ft)....3000   3100   3400   3000   2500   500
Mixing wind.....W 30   W 32   W 32   W 28   NW 15  W 8
Haines index....5      5      5      5      5      5
Smoke disprsl...900    1000   1100   1000   500    300

.TONIGHT...

Sky/weather.........Partly cloudy (35-45 percent). Slight chance of
                    rain showers toward daybreak.
Temperature.........Min 46.
RH..................Max 90 percent.
Wind (20 ft)........West winds 5 to 6 mph in the evening becoming
                    light, then becoming northeast 5 to 6 mph
                    toward daybreak.
Mixing height.......300 ft AGL.
Mixing winds........Northwest 6 to 10 mph shifting to the north 7
                    to 9 mph toward daybreak.
Smoke dispersal.....20 (poor).
Haines Index........4 or low potential for large plume dominated
                    fire growth.

.THURSDAY...

Sky/weather.........Partly sunny (55-65 percent). Chance of rain
                    showers through the day. Slight chance of
                    thunderstorms late in the day.
Temperature.........Max 75.
RH..................Min 44 percent.
Wind (20 ft)........East winds 6 to 12 mph. Gusty and erratic winds
                    expected near thunderstorms late in the day.
Mixing height.......2900 ft AGL.
Mixing winds........East 8 to 10 mph shifting to the southeast 10
                    to 18 mph.
Smoke dispersal.....100 (poor) early in the morning increasing to
                    530 (good) in the afternoon.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

$$
Forecaster...Jeruzal
Requested by...Jeff Vasher
Type of request...PRESCRIBED
.TAG 2412880.0/GRR
.DELDT 05/01/24
.FormatterVersion 2.0.0
.EMAIL vasherj@michigan.gov