Suppression Forecast
Issued by NWS Grand Rapids, MI

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FNUS73 KGRR 271228
FWSGRR

SPOT FORECAST FOR 458 SOUTH RX...USFS - HMF
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
828 AM EDT Tue Jun 27 2017

FORECAST IS BASED ON IGNITION TIME OF 1000 EDT ON JUNE 27.
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...
An area of high pressure in the Middle Mississippi Valley will track
east today into the Central Appalachians.  This feature will provide
westerly winds and sunny skies across the region today.  Afternoon
humidity levels are forecasted to drop off to around 40 percent with
good mixing expected through the early afternoon hours.

.TODAY...

SKY/WEATHER.........SUNNY (15-25 PERCENT).
TEMPERATURE.........63 AT IGNITION...MAX 72.
RH..................65 PERCENT AT IGNITION...MIN 41 PERCENT.
WIND (20 FT)........WINDS WEST AT 10 MPH AT IGNITION...OTHERWISE
                    WEST WINDS 6 TO 11 MPH.
MIXING HEIGHT.......2300-2800 FT AGL INCREASING TO 4800 FT AGL AT
                    IGNITION...OTHERWISE 7000-7500 FT AGL, THEN
                    DECREASING TO 4300 FT AGL IN THE EVENING.
MIXING WINDS........WEST 12 TO 20 MPH.
SMOKE DISPERSAL.....800 /EXCELLENT/ AT IGNITION. MAX...1400
                    /EXCELLENT/.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH AT IGNITION...MAX 4.

TIME (EDT)      10 AM  NOON   2 PM   4 PM   6 PM   8 PM
SKY (%).........25     24     25     22     16     8
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TSTM COV........
TEMP............63     68     70     71     72     69
RH..............65     53     45     42     41     47
20 FT WIND......W 8    W 10   W 10   W 10   W 8    SW 7
20 FT WIND GUST.15     20     20     20     15     10
MIX HGT (FT)....4800   7200   7400   7400   5700   2900
HAINES INDEX....3      4      4      4      4      3
SMOKE DISPERSAL 800    1400   1300   1200   900    300

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
TEMPERATURE.........MIN 54.
RH..................MAX 90 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 10 MPH.
MIXING HEIGHT.......2400-2900 FT AGL DECREASING TO 400-900 FT AGL.
MIXING WINDS........SOUTH 6 TO 12 MPH.
SMOKE DISPERSAL.....0-300 (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.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (80-90 PERCENT). CHANCE OF
                    SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
TEMPERATURE.........MAX 76.
RH..................MIN 46 PERCENT.
WIND (20 FT)........SOUTH WINDS 12 TO 17 MPH. GUSTS UP TO 30 MPH.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE AFTERNOON.
MIXING HEIGHT.......3900-4400 FT AGL DECREASING TO 1900-2400 FT AGL
                    LATE IN THE DAY.
MIXING WINDS........SOUTH 14 TO 22 MPH INCREASING TO 24 TO 29 MPH.
SMOKE DISPERSAL.....100-1300 (POOR TO EXCELLENT).
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...MJS
REQUESTED BY...KORY BORGMAN
TYPE OF REQUEST...PRESCRIBED
.TAG 1711704.0/GRR
.EMAIL KBORGMAN@FS.FED.US



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