FNUS73 KFGF 041253 CCA
FWSFGF

SPOT FORECAST FOR RYDELL NWR...US FISH AND WILDLIFE...CORRECTED
NATIONAL WEATHER SERVICE GRAND FORKS ND
750 AM CDT MON MAY 4 2009

FORECAST IS BASED ON IGNITION TIME OF 1230 CDT ON MAY 4. IF
CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

EXPECT MOSTLY SUNNY SKIES TODAY AT THE PRESCRIBED BURN SITE WITH A
MAXIMUM TEMPERATURE IN THE UPPER 60S...POSSIBLY NEARING 70 DEGREES.
GIVEN ABUNDANT SUNSHINE...A WELL MIXED BOUNDARY LAYER WILL DEVELOP
EARLY AFTERNOON...ALLOWING FOR STRONGER WINDS AND DRIER AIR ALOFT
TO REACH THE SURFACE. EXPECT SOUTH-SOUTHEAST SURFACE WINDS FROM
10 TO 15 MPH WITH GUSTS TO 25 MPH TO DEVELOP BY 1 PM...CONTINUING
THROUGH EARLY EVENING WITH MINIMUM RH VALUES DIPPING INTO THE LOW
20 PERCENT RANGE. AFTERNOON SMOKE DISPERSION WILL BE EXCELLENT.

A COLD FRONT WILL MOVE ACROSS THE BURN SITE AFTER MIDNIGHT...
RESULTING IN WINDS SHIFTING TO THE SOUTHWEST AND DECREASING
SLIGHTLY. SCATTERED RAIN SHOWERS AND THUNDERSTORMS WILL BE
POSSIBLE WITH FRONTAL PASSAGE. RAINFALL AMOUNTS WILL BE A QUARTER
OF AN INCH OR LESS.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....66-71.
MIN HUMIDITY........21-26 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 10 TO 15 MPH WITH GUSTS TO
                    AROUND 25 MPH.
MIXING HEIGHT.......300-2000 FT AGL INCREASING TO
                    6900-8600 FT AGL.
MIXING WINDS........SOUTH 6 TO 14 MPH INCREASING
                    TO 17 TO 21 MPH IN THE LATE MORNING AND
                    AFTERNOON.

TIME (CDT)      11A 12P 1PM 2PM 3PM 4PM 5PM 6PM
SKY (%).........26  29  32  38  44  50  57  63
WEATHER COV.....
WEATHER TYPE....
TEMP............55  58  62  65  67  67  68  67
RH..............40  36  31  28  26  27  26  28
20 FT WIND DIR..S   S   S   S   S   S   S   SE
20 FT WIND SPD..8   9   10  12  14  14  14  14
20 FT WIND GUST.15  15  15  20  25  25  25  25

.TONIGHT...

MIN TEMPERATURE.....47-52.
MAX HUMIDITY........81-86 PERCENT.
WIND (20 FT)........SOUTH WINDS 10 TO 15 MPH. GUSTS UP TO 25 MPH
                    EARLY IN THE EVENING THEN 20 MPH IN THE LATE
                    EVENING AND EARLY MORNING. GUSTY AND ERRATIC
                    WINDS ARE POSSIBLE NEAR THUNDERSTORMS IN THE
                    EVENING AND OVERNIGHT.

TIME (CDT)      7 PM   9 PM   11 PM  1 AM   3 AM   5 AM
TEMP............67     62     58     55     52     50
RH..............29     39     51     64     74     83
20 FT WIND......SE 14  SE 11  SE 10  SE 11  S 10   S 10
20 FT WIND GUST.25     20     20     20     20     15

.TUESDAY...

MAX TEMPERATURE.....64-69.
MIN HUMIDITY........35-40 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 11 TO 16 MPH. GUSTS UP TO 25
                    MPH.

TIME (CDT)      7 AM      10 AM     1 PM      4 PM
TEMP............49        56        63        66
RH..............86        66        50        42
20 FT WIND......S 10G15   S 14G25   S 14G25   SW 11G20

$$
FORECASTER...ROGERS
REQUESTED BY...PATRICK WAGNER
TYPE OF REQUEST...PRESCRIBED
.TAG 20090504.RYDEL.02/FGF