Suppression Forecast
Issued by NWS Grand Rapids, MI

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001
FNUS73 KGRR 241026
FWSGRR

Spot Forecast for SER Unit 439...USFS HMF
National Weather Service Grand Rapids MI
626 AM EDT Thu May 24 2018

Forecast is based on ignition time of 1000 EDT on May 24.
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...
Sunny and warmer with southwest winds around 10 to 15 mph this
afternoon. Relative humidity will drop to about 35 percent.

.REST OF TODAY...

Sky/weather.........Sunny (10-20 percent).
Temperature.........69 at ignition...Max 81.
RH..................63 percent at ignition...Min 36 percent.
Wind (20 ft)........Winds south at 7 mph at ignition...otherwise
                    Southwest winds 6 to 11 mph.
Mixing height.......1700 ft AGL at ignition...otherwise 3300-3800
                    ft AGL decreasing to 1200 ft AGL in the
                    evening.
Mixing winds........Southwest 9 to 15 mph.
Smoke dispersal.....200 /fair/ at ignition. Max...600 /excellent/.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth at ignition...max 5.

TIME (EDT)      10 AM  NOON   2 PM   4 PM   6 PM   8 PM
Sky (%).........12     13     14     14     16     20
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............69     79     80     81     80     76
RH..............63     44     38     37     39     46
20 ft wind......S 7    SW 9   SW 11  SW 11  SW 9   S 7
20 ft wind gust.       11     14     14     10
Mix hgt (ft)....1700   3000   3800   3500   2100   400
Haines index....5      5      5      5      5      4
Smoke Dispersal 200    400    500    500    300    0

.TONIGHT...

Sky/weather.........Mostly clear (10-20 percent).
Temperature.........Min 59.
RH..................Max 81 percent.
Wind (20 ft)........South winds 5 to 10 mph.
Mixing height.......0-400 ft AGL.
Mixing winds........Southwest 5 to 12 mph.
Smoke dispersal.....0 (poor).
Haines Index........3 to 4 OR or very low potential for large plume
                    dominated fire growth to or low potential for
                    large plume dominated fire growth.

.FRIDAY...

Sky/weather.........Sunny (20-30 percent).
Temperature.........Max 84.
RH..................Min 41 percent.
Wind (20 ft)........South winds 6 to 11 mph.
Mixing height.......2600-3100 ft AGL decreasing to 1100 ft AGL in
                    the evening.
Mixing winds........Southwest 13 to 22 mph.
Smoke dispersal.....100-700 (poor to excellent).
Haines Index........2 to 4 OR or very low potential for large plume
                    dominated fire growth to or low potential for
                    large plume dominated fire growth.

$$
Forecaster...Ostuno
Requested by...Kevin Reese
Type of request...PRESCRIBED
.TAG 1810585.0/GRR
.EMAIL Kevinreese@fs.fs.us



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