FNUS73 KGRR 101220
FWSGRR

FIRE WEATHER PLANNING FORECAST FOR ORV SPLIT...MI DNR
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
820 AM EDT THU MAY 10 2012

FORECAST IS BASED ON IGNITION TIME OF 1100 EDT ON MAY 10.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...HIGH PRESSURE WILL BRING SOUTHWEST MICHIGAN WARM
DAYS AND COOLISH NIGHTS. HIGH TEMPERATURES WILL BE IN THE 60S
TODAY...THEN AROUND 70 ON FRIDAY. MEANWHILE...LOWS WILL BE IN THE
UPPER 30 TO LOWER 40S. THE NEXT CHANCE OF RAIN WILL HOLD OFF UNTIL
LATE FRIDAY NIGHT INTO SATURDAY AS A WEAK COLD FRONT COMES ACROSS
THE REGION.


.TODAY...

SKY/WEATHER.........SUNNY (15-25 PERCENT).
TEMPERATURE.........55 AT IGNITION...MAX 64.
RH..................43 PERCENT AT IGNITION...MIN 29 PERCENT.
WIND (20 FT)........WINDS NORTHWEST AT 10 MPH AT
                    IGNITION...OTHERWISE NORTHWEST WINDS 7 TO 12
                    MPH.
MIXING WINDS........NORTH 10 TO 18 MPH INCREASING TO 15 TO 21 MPH
                    IN THE AFTERNOON.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH AT IGNITION...MAX 5.
SMOKE DISPERSAL.....100-300 (POOR TO GOOD) INCREASING TO 600-1000
                    (EXCELLENT TO EXCELLENT) FROM LATE MORNING
                    THROUGH EARLY AFTERNOON...THEN INCREASING TO
                    1300-1700 (EXCELLENT TO EXCELLENT) FROM LATE
                    MORNING THROUGH EARLY AFTERNOON INCREASING TO
                    1600-1800 (EXCELLENT TO EXCELLENT) LATE IN THE
                    DAY DECREASING TO 900-1300 (EXCELLENT TO
                    EXCELLENT).

TIME (EDT)      11 AM  1 PM   3 PM   5 PM   7 PM
SKY (%).........7      37     40     24     7
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE
TEMP............55     60     62     63     61
RH..............43     36     32     29     32
20 FT WIND......NW 10  NW 11  NW 12  NW 13  W 10
20 FT GUST......15     15     15     20     15
HAINES INDEX....4      4      4      5      4

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
TEMPERATURE.........MIN 39.
RH..................MAX 67 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 10 MPH.
MIXING WINDS........NORTHWEST 8 TO 12 MPH SHIFTING TO THE SOUTHWEST
                    3 TO 12 MPH.

$$
FORECASTER...MARINO
REQUESTED BY...JIM FISHER
TYPE OF REQUEST...PRESCRIBED
.TAG 20120510.ORVSP.01/GRR