FNUS73 KABR 181207
FWSABR

SPOT FORECAST FOR OPDAHL...US FISH AND WILDLIFE SERVICE
NATIONAL WEATHER SERVICE ABERDEEN SD
707 AM CDT SUN APR 18 2010

FORECAST IS BASED ON IGNITION TIME OF 1500 CDT ON APRIL 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
SURFACE HIGH PRESSURE WILL CONTINUE TO DRIFT EAST TOWARDS THE
WESTERN LAKES...WHILE A WEAK SYSTEM SPINS OVER THE NORTHERN HIGH
PLAINS. THIS SYSTEM HAS MORE CLOUDS THAN RAIN AND WILL ONLY BRING A
SLIGHT CHANCE OF A SHOWER TO THE REGION SUNDAY AND MONDAY.
HUMIDITY WILL MAKE A SLOW RECOVERY AS SOUTHERLY WINDS STRENGTHEN
TODAY...BUT WE WILL STILL BE LOOKING AT 20-30 PERCENT RELATIVE
HUMIDITY. WINDS WILL BE STRONGEST ACROSS WESTERN SOUTH DAKOTA AND
THE MISSOURI VALLEY...WITH GUSTS OF 15 TO 25 KTS THIS AFTERNOON.

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT CLOUD).
MAX TEMPERATURE.....62-67.
MIN HUMIDITY........19-24 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 12 MPH.
HAINES INDEX........5 OR MODERATE.
MIXING HEIGHT.......300 FT AGL UNTIL 1300...THEN 5400 FT AGL.
TRANSPORT WINDS.....SOUTH 14 TO 21 MPH.
SMOKE DISPERSAL.....AROUND 3900 UNTIL 1300...THEN AROUND 63800.
CWR.................ZERO.

TIME (CDT)      3 PM   5 PM
SKY (%).........49     52
WEATHER COV.....
WEATHER TYPE....NONE   NONE
TEMP............61     62
RH..............24     21
20 FT WIND......S 10   S 9
20 FT WIND GUST.15     15

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT CLOUD).
MIN TEMPERATURE.....37-42.
MAX HUMIDITY........62-67 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS AROUND 8 MPH UNTIL 2200...THEN
                    LIGHT UNTIL 0300...THEN SOUTHEAST AROUND 5 MPH
                    UNTIL 0500...THEN LIGHT.
HAINES INDEX........5 OR MODERATE.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 8 TO 13 MPH.
SMOKE DISPERSAL.....2100-2200.
CWR.................ZERO.

TIME (CDT)      7 PM   9 PM   11 PM  1 AM   3 AM   5 AM
SKY (%).........53     58     65     71     71     72
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............61     54     49     46     44     42
RH..............22     33     44     54     60     63
20 FT WIND......S 7    SE 5   SE 4   SE 4   SE 5   SE 4
20 FT WIND GUST.10            5      5             5

$$
FORECASTER...PARKIN
REQUESTED BY...JEFF MEADOWS
TYPE OF REQUEST...PRESCRIBED
.TAG 20100418.OPDAH.01/ABR