FNUS73 KFGF 171708
FWSFGF

SPOT FORECAST FOR JACOBSON N...USFWS
NATIONAL WEATHER SERVICE GRAND FORKS ND
1208 PM CDT FRI APR 17 2009

FORECAST IS BASED ON IGNITION TIME OF 1300 CDT ON APRIL 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.UPDATED DISCUSSION...

RH LEVELS ARE NOT COMING DOWN AS QUICKLY AS PREVIOUSLY THOUGHT DUE
TO THE CLOUD COVER. SINCE CLOUD COVER IS BECOMING MORE AND MORE
EXTENSIVE NEAR THE BURN SITE...IT LOOKS LIKE THE SUN WILL HAVE
A DIFFICULT TIME SHOWING ITSELF MUCH. THEREFORE...THE RH LEVELS
HAVE BEEN READJUSTED...WITH A MINIMUM RH LEVEL ABOUT 10 TO 15
PERCENT HIGHER THAN THE PREVIOUS FORECAST.

.PREVIOUS DISCUSSION...

WEAK COLD FRONT MOVING ACROSS THE AREA THIS MORNING...NOW CAUSING NEARLY
CALM WINDS AT YOUR SITE. AS THE FRONT MOVES EAST WINDS WILL INCREASE AND
BECOME NORTHWESTERLY. MINIMUM RELATIVE HUMIDITIES TODAY WILL BE A BIT
HIGHER AS TEMPERATURES WILL BE LOWER WITH INCREASED CLOUD COVER. SMOKE
DISPERSION WILL BE GOOD THIS AFTERNOON AS THE MIXING HEIGHT INCREASES
TO AROUND 3500 FT.

.REST OF TODAY...

SKY/WEATHER.........MOSTLY CLOUDY.
MAX TEMPERATURE.....57-62.
MIN HUMIDITY........51-56 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 7 TO 12 MPH.
MIXING HEIGHT.......3200-3700 FT AGL.
MIXING WINDS........NORTHWEST 14 TO 15 MPH.

TIME (CDT)      2 PM   4 PM   6 PM
SKY (%).........67     72     77
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE
TEMP............57     59     59
RH..............66     56     59
20 FT WIND......W 10   NW 10  NW 12
20 FT WIND GUST.15     15     15

.TONIGHT...

MIN TEMPERATURE.....32-37.
MAX HUMIDITY........80-85 PERCENT.
WIND (20 FT)........NORTH WINDS 7 TO 12 MPH.

TIME (CDT)      7 PM   9 PM   11 PM  1 AM   3 AM   5 AM
TEMP............58     51     46     42     38     36
RH..............59     66     74     80     82     84
20 FT WIND......NW 12  NW 12  N 10   N 9    N 9    N 9
20 FT WIND GUST.15     15     15     10     10     10

.SATURDAY...

WIND (20 FT)........NORTH WINDS 8 TO 13 MPH.

TIME (CDT)      7 AM   9 AM   11 AM  1 PM   3 PM   5 PM
20 FT WIND......N 9    N 9    N 10   N 10   N 12   N 13
20 FT WIND GUST.10     15     15     15     15     15

$$
FORECASTER...GROCHOCINSKI
REQUESTED BY...PATRICK WAGNER
TYPE OF REQUEST...PRESCRIBED
.TAG 20090417.JACOB.01/FGF