497
FNUS73 KGRR 140726
FWSGRR

Spot Forecast for Brohman 4...USFS
National Weather Service Grand Rapids MI
326 AM EDT Tue May 14 2024

Forecast is based on ignition time of 0800 EDT on May 14.
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 showers along a frontal boundary will
gradually move south today leading to clearing during the
afternoon.

.REST OF TODAY...

Sky/weather.........Mostly cloudy (65-75 percent) then becoming
                    mostly sunny (45-55 percent). Chance of rain
                    showers early in the morning, then slight
                    chance of rain showers through early afternoon.
Temperature.........51 at ignition...Max 69.
RH..................77 percent at ignition...Min 43 percent.
Wind (20 ft)........Winds northeast at 9 mph at
                    ignition...otherwise East winds 9 to 10 mph.
Mixing height.......700 ft AGL at ignition...otherwise 4300 ft AGL.
Mixing winds........East 10 to 13 mph.
Smoke dispersal.....70 /poor/ at ignition. Max...440 /good/.
Haines Index........3 or very low potential for large plume
                    dominated fire growth at ignition...max 4.

TIME (EDT)      8 AM   10 AM  NOON   2 PM   4 PM   6 PM
Sky (%).........83     73     60     50     46     51
Weather cov.....CHANCE CHANCE
Weather type....RNSHWR RNSHWR NONE   NONE   NONE   NONE
Tstm cov........
Temp............51     54     59     63     67     68
RH..............77     69     62     54     45     43
20 ft wind......NE 9   NE 9   E 10   E 10   E 10   E 10
20 ft wind gust.14     14     15     16     16     15
Mix hgt (ft)....700    1200   2100   3400   4100   4000
Mixing wind.....E 10   E 12   E 10   E 10   E 10   E 10
Haines index....3      3      3      4      4      4
Smoke disprsl...70     140    220    350    430    410

.TONIGHT...

Sky/weather.........Mostly cloudy (55-65 percent) then becoming
                    partly cloudy (20-30 percent) then becoming
                    clear (0-10 percent).
Temperature.........Min 46.
RH..................Max 73 percent.
Wind (20 ft)........East winds 9 to 10 mph shifting to the
                    northeast around 10 mph toward daybreak.
Mixing height.......500 ft AGL.
Mixing winds........East 10 to 13 mph.
Smoke dispersal.....170 (fair) early in the evening decreasing to
                    60 (poor) late in the night.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

.WEDNESDAY...

Sky/weather.........Sunny (5-15 percent).
Temperature.........Max 72.
RH..................Min 34 percent.
Wind (20 ft)........Northeast winds 9 to 12 mph.
Mixing height.......5500 ft AGL.
Mixing winds........East 10 to 15 mph.
Smoke dispersal.....80 (poor) early in the morning increasing to
                    590 (good) in the afternoon.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

$$
Forecaster...Felver
Requested by...Joe Raspotnik
Type of request...PRESCRIBED
.TAG 2413981.0/GRR
.DELDT 05/14/24
.FormatterVersion 2.0.0
.EMAIL joeraspotnik@usda.gov