Text Products for FWS Issued by GRR

Spot Forecast
Issued by NWS Grand Rapids, MI
Versions: 1 2 3 4 5 6
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FNUS73 KGRR 200755
FWSGRR

Spot Forecast for Hoague RX...USFS
National Weather Service Grand Rapids MI
355 AM EDT Sat Apr 20 2024

Forecast is based on ignition time of 0900 EDT on April 20.
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...
Partly to mostly sunny skies likely today as cumulus develops during
the morning hours. Some uncertainty in cloud cover exists given trends
in upstream cloud cover which may be greater in coverage when it reaches
West Michigan than expected. Winds today will be from the west at 9 to
14 mph with RH values falling to around 40 percent this afternoon.
Precipitation is not expected today.

.REST OF TODAY...

Sky/weather.........Mostly sunny (45-55 percent).
Temperature.........36 at ignition...Max 46.
RH..................64 percent at ignition...Min 41 percent.
Wind (20 ft)........Winds west at 12 mph at ignition...otherwise
                    West winds 9 to 14 mph.
Mixing height.......4400 ft AGL at ignition...otherwise 5900 ft
                    AGL.
Mixing winds........West 16 to 21 mph.
Smoke dispersal.....920 /excellent/ at ignition. Max...1150
                    /excellent/.
Haines Index........4 or low potential for large plume dominated
                    fire growth at ignition...max 4.

TIME (EDT)      9 AM   11 AM  1 PM   3 PM   5 PM   7 PM
Sky (%).........57     70     60     44     42     31
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............36     39     41     43     43     43
RH..............64     54     48     41     41     43
20 ft wind......W 12   W 14   W 13   W 12   W 12   W 9
20 ft wind gust.18     18     18     18     17     14
Mix hgt (ft)....4400   5100   5700   5900   5800   4700
Mixing wind.....W 21   W 21   W 20   W 20   W 20   W 16
Haines index....4      4      4      4      4      4
Smoke disprsl...920    1060   1110   1150   1130   760

.TONIGHT...

Sky/weather.........Partly cloudy (40-50 percent) then becoming
                    mostly cloudy (50-60 percent) then becoming
                    mostly clear (20-30 percent). Widespread frost
                    after midnight.
Temperature.........Min 29.
RH..................Max 88 percent.
Wind (20 ft)........West winds 6 to 8 mph.
Mixing height.......400 ft AGL.
Mixing winds........West 8 to 10 mph.
Smoke dispersal.....240 (fair) early in the evening decreasing to
                    30 (poor) late in the night.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

.SUNDAY...

Sky/weather.........Sunny (10-20 percent).
Temperature.........Max 54.
RH..................Min 34 percent.
Wind (20 ft)........West winds 9 to 13 mph.
Mixing height.......7000 ft AGL.
Mixing winds........West 12 to 21 mph shifting to the northwest 22
                    to 28 mph, then becoming west around 15 mph in
                    the evening.
Smoke dispersal.....80 (poor) early in the morning increasing to
                    1150 (excellent) in the afternoon increasing to
                    1130 (excellent) in the afternoon, then
                    decreasing to 420 (good) in the evening.
Haines Index........4 to 5 or low to moderate potential for large
                    plume dominated fire growth.

$$
Forecaster...Thomas
Requested by...Jeff Nieland
Type of request...PRESCRIBED
.TAG 2411410.0/GRR
.DELDT 04/20/24
.FormatterVersion 2.0.0
.EMAIL Jeff.Nieland@usda.gov
National Weather Service Weather Forecast Office
