Suppression Forecast
Issued by NWS Grand Rapids, MI

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000
FNUS73 KGRR 301238
FWSGRR

FIRE WEATHER PLANNING FORECAST FOR POWER LINE RX...USFS
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
838 AM EDT SAT JUL 30 2016

FORECAST IS BASED ON IGNITION TIME OF 1200 EDT ON JULY 30.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
AN UPPER LEVEL SYSTEM OVER THE WESTERN GREAT LAKES WILL CONTINUE TO PRODUCE
SHOWERS AND THUNDERSTORMS ACROSS WEST MICHIGAN AS IT SLOWLY MOVES TO THE EAST.
THE GREATEST THREAT FOR RAIN WILL EXIST ALONG AND SOUTH OF INTERSTATE 96.
HEAVY RAIN WILL BE POSSIBLE DUE TO SLOW MOVEMENT AND VERY HIGH MOISTURE LEVELS
IN THE LOWER ATMOSPHERE.

.TODAY...

SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). SLIGHT CHANCE OF
                    SHOWERS AND THUNDERSTORMS EARLY IN THE MORNING.
                    CHANCE OF SHOWERS AND THUNDERSTORMS.
TEMPERATURE.........74 AT IGNITION...MAX 78.
RH..................62 PERCENT AT IGNITION...MIN 60 PERCENT.
WIND (20 FT)........WINDS EAST AT 11 MPH AT IGNITION...OTHERWISE
                    EAST WINDS 6 TO 11 MPH. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS EARLY IN THE
                    MORNING. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS.
MIXING WINDS........EAST 10 TO 13 MPH.
MIXING HEIGHT.......3600 FT AGL AT IGNITION...OTHERWISE 3300-3800
                    FT AGL.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH AT IGNITION...MAX 5.
SMOKE DISPERSAL.....100-700 (POOR TO EXCELLENT).

TIME (EDT)      NOON   2 PM   4 PM   6 PM
SKY (%).........79     92     96     97
WEATHER COV.....S CHC  CHANCE CHANCE S CHC
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR
TEMP............74     76     77     76
RH..............62     60     60     66
20 FT WIND......E 9    E 8    E 7    E 7
20 FT GUST......15     15     15     15
HAINES INDEX....4      3      3      3

.TONIGHT...

SKY/WEATHER.........CLOUDY (85-95 PERCENT). SLIGHT CHANCE OF
                    THUNDERSTORMS IN THE EVENING. SLIGHT CHANCE OF
                    SHOWERS THROUGH THE NIGHT. SLIGHT CHANCE OF
                    THUNDERSTORMS LATE AT NIGHT.
TEMPERATURE.........MIN 61.
RH..................MAX 97 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 10 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS LATE AT NIGHT.
MIXING WINDS........NORTHEAST 6 TO 14 MPH.
MIXING HEIGHT.......1600-2100 FT AGL.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
SMOKE DISPERSAL.....0-300 (POOR TO GOOD).

$$
FORECASTER...SUTTON
REQUESTED BY...BEN WAGNER
TYPE OF REQUEST...PRESCRIBED
.TAG 20160730.POWER.01/GRR



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