Suppression Forecast
Issued by NWS Grand Rapids, MI

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000
FNUS73 KGRR 221238
FWSGRR

SPOT FORECAST FOR IDLEWILD FUEL UNIT 6 AND 9...USFS
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
838 AM EDT Sat Apr 22 2017

FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON APRIL 22.
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...High pressure will assure mostly clear skies and light north wind
through the morning.

.TODAY...

SKY/WEATHER.........SUNNY (15-25 PERCENT).
TEMPERATURE.........41 AT IGNITION...MAX 61.
RH..................58 PERCENT AT IGNITION...MIN 27 PERCENT.
WIND (20 FT)........WINDS NORTH AT 7 MPH AT IGNITION...OTHERWISE
                    NORTH WINDS 5 TO 10 MPH.
MIXING HEIGHT.......1400 FT AGL AT IGNITION...OTHERWISE 4900-5400
                    FT AGL.
MIXING WINDS........NORTH 5 TO 13 MPH.
SMOKE DISPERSAL.....100 /POOR/ AT IGNITION. MAX...600 /EXCELLENT/.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH AT IGNITION...MAX 5.

TIME (EDT)      9 AM   11 AM  1 PM   3 PM   5 PM   7 PM
SKY (%).........26     23     21     19     17     14
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TSTM COV........
TEMP............41     52     58     61     61     59
RH..............58     41     32     27     28     32
20 FT WIND......N 6    N 6    N 7    N 6    N 6    NW 6
20 FT WIND GUST.       10     10     10     10     10
MIX HGT (FT)....1400   3800   4900   5300   5400   4800
HAINES INDEX....5      5      5      5      5      5
SMOKE DISPERSAL 100    400    600    600    400    200

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). PATCHY FROST
                    OVERNIGHT.
TEMPERATURE.........MIN 34.
RH..................MAX 82 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 10 MPH SHIFTING TO THE
                    SOUTHWEST AFTER MIDNIGHT.
MIXING HEIGHT.......3600-4100 FT AGL DECREASING TO 1000-1500 FT
                    AGL.
MIXING WINDS........SOUTHWEST 3 TO 6 MPH.
SMOKE DISPERSAL.....0-200 (POOR TO FAIR).
HAINES INDEX........3 TO 5 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL
                    FOR LARGE PLUME DOMINATED FIRE GROWTH.

.SUNDAY...

SKY/WEATHER.........SUNNY (5-15 PERCENT). PATCHY FROST EARLY IN THE
                    MORNING.
TEMPERATURE.........MAX 64.
RH..................MIN 35 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......1100-1600 FT AGL INCREASING TO 5700-6200 FT
                    AGL.
MIXING WINDS........WEST 5 TO 14 MPH INCREASING TO 9 TO 17 MPH.
SMOKE DISPERSAL.....0-1000 (POOR TO EXCELLENT).
HAINES INDEX........3 TO 5 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL
                    FOR LARGE PLUME DOMINATED FIRE GROWTH.

$$
FORECASTER...MARINO
REQUESTED BY...ANGELA HARVIEUX
TYPE OF REQUEST...PRESCRIBED
.TAG 1707475.0/GRR
.EMAIL AHARVIEUX@FS.FED.US


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