Suppression Forecast
Issued by NWS Grand Rapids, MI

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000
FNUS73 KGRR 262041
FWSGRR

FIRE WEATHER PLANNING FORECAST FOR POWERLINE UNIT 3...USFS
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
441 PM EDT SUN APR 26 2015

FORECAST IS BASED ON IGNITION TIME OF 1200 EDT ON APRIL 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...SLIGHTLY HIGHER RH VALUES ARE EXPECTED MONDAY WITH
NORTH WINDS MAINLY 15 MPH OR LESS. A RIDGE OF HIGH PRESSURE
STRETCHING FROM HUDSON BAY TO MINNESOTA WILL MOVE SLOWLY EAST THE
NEXT COUPLE DAYS. DRY WEATHER WILL CONTINUE ALTHOUGH IT WILL REMAIN
COOL WITH PERIODS OF CLOUDINESS. ABOVE NORMAL TEMPERATURES ARE
EXPECTED NEXT WEEKEND BUT RAIN CHANCES WILL INCREASE.


.MONDAY...

SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT).
TEMPERATURE.........49 AT IGNITION...MAX 56.
RH..................56 PERCENT AT IGNITION...MIN 39 PERCENT.
WIND (20 FT)........WINDS NORTH AT 13 MPH AT IGNITION...OTHERWISE
                    NORTH WINDS 9 TO 14 MPH.
MIXING WINDS........NORTH 15 TO 18 MPH.
MIXING HEIGHT.......3700 FT AGL AT IGNITION...OTHERWISE 4100-4600
                    FT AGL.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH AT IGNITION...MAX 3.
SMOKE DISPERSAL.....300-700 (GOOD TO EXCELLENT).

TIME (EDT)      NOON   2 PM   4 PM   6 PM
SKY (%).........62     42     42     42
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE
TEMP............49     53     56     55
RH..............56     44     39     41
20 FT WIND......N 13   N 15   N 15   N 15
20 FT GUST......15     20     20
HAINES INDEX....2      3      3      3

.MONDAY NIGHT...

SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
TEMPERATURE.........MIN 33.
RH..................MAX 96 PERCENT.
WIND (20 FT)........NORTH WINDS 5 TO 6 MPH.
MIXING WINDS........NORTH 8 TO 17 MPH DECREASING TO 3 TO 6 MPH
                    OVERNIGHT.
MIXING HEIGHT.......2700-3200 FT AGL DECREASING TO 600-1100 FT AGL
                    OVERNIGHT.
HAINES INDEX........2 TO 3 OR OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
SMOKE DISPERSAL.....0-500 (POOR TO GOOD).

.TUESDAY...

SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT).
TEMPERATURE.........MAX 61.
RH..................MIN 37 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 10 MPH.
MIXING WINDS........NORTH 1 TO 7 MPH.
MIXING HEIGHT.......3700-4200 FT AGL.
HAINES INDEX........2 TO 3 OR OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
SMOKE DISPERSAL.....0-200 (POOR TO FAIR).

$$
FORECASTER...HOVING
REQUESTED BY...KORY BORGMAN
TYPE OF REQUEST...PRESCRIBED
.TAG 20150426.POWER.01/GRR





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