FNUS73 KDLH 031539
FWSDLH

SPOT FORECAST FOR TOFTE OPENINGS...USFS
NATIONAL WEATHER SERVICE DULUTH MN
1039 AM CDT TUE APR 3 2012

FORECAST IS BASED ON IGNITION TIME OF 1200 CDT ON APRIL 03.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

SUNNY SKIES AND RELATIVELY WARM TEMPERATURES ARE EXPECTED TODAY.
NORTHWEST WINDS AROUND 10 MPH WILL DEVELOP BY THE PROPOSED BURN
TIME. EXPECT EXCELLENT SMOKE DISPERSION DUE TO GOOD MIXING AND
INCREASED WINDS ALOFT. THE GOOD MIXING SHOULD RESULT IN WIND GUSTS
AROUND 20 MPH THROUGH THE LATE AFTERNOON...AS WELL AS DRAWING DOWN
VERY DRY AIR FROM ALOFT TO THE SURFACE. THE MINIMUM HUMIDITY SHOULD
DROP TO NEAR 30 PERCENT...BUT IT COULD FALL BELOW 25 PERCENT IF THE
MIXING IS STRONGER THAN EXPECTED.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....52-57.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 9 TO 12 MPH.
MIXING HEIGHT.......1400 FT AGL INCREASING TO 5650 FT AGL.
TRANSPORT WINDS.....NORTHWEST 25 TO 30 MPH.
SMOKE DISPERSAL.....FAIR (29200) INCREASING TO EXCELLENT (88900)
                    LATE IN THE MORNING...THEN INCREASING TO
                    EXCELLENT (132300) EARLY IN THE AFTERNOON
                    DECREASING TO EXCELLENT (120800) LATE IN THE
                    AFTERNOON.

TIME (CDT)      NOON   2 PM   4 PM   6 PM
TEMP............49     53     54     52
RH..............42     32     30     31
20 FT WIND DIR..N      NW     NW     NW
20 FT WIND SPD..10     11     11     10
20 FT WIND GUST.20     20     22     20

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR. PATCHY FROST AFTER MIDNIGHT.
MIN TEMPERATURE.....28-33.
MAX HUMIDITY........69 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 7 TO 11 MPH BECOMING NORTH
                    AROUND 6 MPH LATE.
MIXING HEIGHT.......3400 FT AGL DECREASING TO 300 FT AGL IN THE
                    LATE EVENING AND OVERNIGHT.
TRANSPORT WINDS.....NORTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....EXCELLENT (67800) DECREASING TO POOR (3650) IN
                    THE LATE EVENING AND OVERNIGHT.

TIME (CDT)      7 PM   9 PM   11 PM  1 AM   3 AM   5 AM
TEMP............51     45     40     37     35     32
RH..............33     41     50     56     61     66
20 FT WIND DIR..NW     NW     NW     NW     N      N
20 FT WIND SPD..10     8      7      6      6      5
20 FT WIND GUST.17     13     10     8      8      7

$$
FORECASTER...GEOFF
REQUESTED BY...RYAN KINGSLEY
TYPE OF REQUEST...PRESCRIBED
.TAG 20120403.TOFTE.01/DLH