FNUS73 KDTX 201231
FWSDTX

SPOT FORECAST FOR TOBICO SOUTH
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
831 AM EDT TUE APR 20 2010

IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

DISCUSSION...HIGH PRESSURE WILL REMAIN IN CONTROL ACROSS THE GREAT
LAKES TODAY. SLIGHTLY WARMER AND DRIER CONDITIONS WILL ALLOW RELATIVE
HUMIDITY VALUES TO BRIEFLY DROP INTO THE 20S THIS AFTERNOON. MOISTURE
WILL INCREASE SLIGHTLY ON WEDNESDAY AS A COLD FRONT DROPS THROUGH THE
AREA. HOWEVER LIMITED MOISTURE DEPTH WILL KEEP RAIN CHANCES SLIM.
SLIGHTLY COOLER AIR SETTLES IN FOR THURSDAY AS HIGH PRESSURE RETAKES
CONTROL. THIS HIGH WILL MAINTAIN DRY CONDITIONS THROUGH AT LEAST
FRIDAY BEFORE RAIN CHANCES START INCREASING AHEAD OF A WARM FRONT
OVER THE WEEKEND.


.TODAY...

SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT).
MAX TEMPERATURE.....59-64.
MIN HUMIDITY........33 PERCENT.
WIND (EYE LEVEL)....LIGHT WINDS...BECOMING SOUTH UP TO 5 MPH BY
                    AFTERNOON.
WIND (20 FT)........LIGHT WINDS...BECOMING SOUTH UP TO 5 MPH BY
                    AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
MIXING HEIGHT.......2700 FT AGL...INCREASING TO 7300 FT AGL.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
VENTILATION RATE....EXCELLENT (MAX...600).

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT).
MIN TEMPERATURE.....35-40.
MAX HUMIDITY........68 PERCENT.
WIND (EYE LEVEL)....SOUTH WINDS 5 TO 7 MPH...BECOMING WEST 5 TO 8
                    MPH AFTER MIDNIGHT.
WIND (20 FT)........SOUTH WINDS 5 TO 7 MPH...BECOMING WEST 5 TO 8
                    MPH AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST AROUND 12 MPH.
MIXING HEIGHT.......5300 FT AGL...DECREASING TO 0 FT AGL OVERNIGHT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
VENTILATION RATE....POOR (MIN...0).

$$
FORECASTER...COSTELLO
REQUESTED BY...RANDY MCKENZIE
TYPE OF REQUEST...PRESCRIBED
.TAG 20100420.TOBIC.02/DTX