Suppression Forecast
Issued by NWS Grand Rapids, MI

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FNUS73 KGRR 221311
FWSGRR

SPOT FORECAST FOR IDLWILD RX...USFS
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
911 AM EDT Wed Mar 22 2017

FORECAST IS BASED ON IGNITION TIME OF 1200 EDT ON MARCH 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...Cold dry air will continue to be move into the area through tonight.
Winds will slowly decrease this afternoon and become light, that is under 5 mph by
this afternoon.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
TEMPERATURE.........24 AT IGNITION...MAX 37.
RH..................71 PERCENT AT IGNITION...MIN 40 PERCENT.
WIND (20 FT)........WINDS NORTHEAST AT 8 MPH AT
                    IGNITION...OTHERWISE NORTHWEST WINDS 5 TO 6
                    MPH.
MIXING HEIGHT.......3400 FT AGL AT IGNITION...OTHERWISE 3400-3900
                    FT AGL.
MIXING WINDS........NORTH 6 TO 15 MPH SHIFTING TO THE NORTHWEST 1
                    TO 5 MPH IN THE AFTERNOON, THEN SHIFTING TO THE
                    SOUTHWEST AROUND 1 MPH IN THE EVENING.
SMOKE DISPERSAL.....200 /FAIR/ AT IGNITION. MAX...500 /GOOD/.
HAINES INDEX........4 OR LOW 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 (%).........32     42     42     42     43     40
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TSTM COV........
TEMP............24     31     36     36     29     20
RH..............71     53     43     42     48     59
20 FT WIND......NE 6   N 5    NW 4   NW 4   NW 4   NE 4
20 FT WIND GUST.10            5      5      5      5
MIX HGT (FT)....3400   3700   3900   3700   3000   2500
HAINES INDEX....4      4      5      5      4      4
SMOKE DISPERSAL 200    200    100    0      0      100

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT).
TEMPERATURE.........MIN 14.
RH..................MAX 80 PERCENT.
WIND (20 FT)........NORTHWEST WINDS UP TO 5 MPH SHIFTING TO THE
                    SOUTH.
MIXING HEIGHT.......2500-3000 FT AGL DECREASING TO 1000 FT AGL
                    EARLY IN THE MORNING.
MIXING WINDS........SOUTH 1 TO 10 MPH INCREASING TO 10 TO 12 MPH
                    TOWARD DAYBREAK.
SMOKE DISPERSAL.....0-200 (POOR TO FAIR).
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.THURSDAY...

SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). CHANCE OF RAIN
                    IN THE AFTERNOON.
TEMPERATURE.........MAX 44.
RH..................MIN 26 PERCENT.
WIND (20 FT)........SOUTH WINDS 6 TO 11 MPH.
MIXING HEIGHT.......2200-2700 FT AGL.
MIXING WINDS........SOUTH 10 TO 18 MPH INCREASING TO 20 TO 22 MPH
                    LATE IN THE DAY.
SMOKE DISPERSAL.....100-500 (POOR TO GOOD).
HAINES INDEX........3 TO 4 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH TO OR LOW POTENTIAL FOR
                    LARGE PLUME DOMINATED FIRE GROWTH.

$$
FORECASTER...MARINO
REQUESTED BY...KEVIN SHERRETZ
TYPE OF REQUEST...PRESCRIBED
.TAG 1704820.0/GRR
.EMAIL KSHERRETZ@FS.FED.US



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