FNUS73 KABR 281420
FWSABR

SPOT FORECAST FOR LA PLANT...CHEYENNE RIVER
NATIONAL WEATHER SERVICE ABERDEEN SD
920 AM CDT TUE SEP 28 2010

FORECAST IS BASED ON IGNITION TIME OF 0930 MDT ON SEPTEMBER 28.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A WEAK HIGH PRESSURE AREA WILL SLIDE SLOWLY EAST TODAY WITH LIGHT
AND VARIABLE WINDS TURNING SOUTH TO SOUTHWEST AT 5 TO 15 MPH BY
NOON MDT. A FEW GUSTS COULD REACH 20 MPH LATER THIS AFTERNOON. SKIES
WILL BE SUNNY THROUGHOUT THE DAY WITH DRY CONDITIONS.

.TODAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT CLOUD).
MAX TEMPERATURE.....80-85.
MIN HUMIDITY........30-35 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 1000...THEN SOUTH 5 TO 12 MPH
                    WITH GUSTS TO AROUND 20 MPH.
HAINES INDEX........4 OR LOW.
MIXING HEIGHT.......400 FT AGL UNTIL 1300...THEN 2900 FT AGL.
TRANSPORT WINDS.....SOUTH 14 TO 19 MPH.
SMOKE DISPERSAL.....AROUND 5200 UNTIL 1300...THEN AROUND 44900.
CWR.................ZERO.
LAL.................1.

TIME (MDT)      9 AM   11 AM  1 PM   3 PM   5 PM
SKY (%).........9      7      6      4      2
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE
TEMP............59     70     77     81     78
RH..............63     45     36     32     34
20 FT WIND......S 5    S 9    S 11   S 11   S 9
20 FT WIND GUST.       10     20     20     10

.TONIGHT...
SKY/WEATHER.........CLEAR (0-5 PERCENT CLOUD).
MIN TEMPERATURE.....51-56.
MAX HUMIDITY........66-71 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 9 MPH UNTIL 2400...THEN
                    SOUTHWEST UP TO 5 MPH UNTIL 0100...THEN LIGHT
                    UNTIL 0200...THEN NORTHWEST 5 TO 9 MPH.
HAINES INDEX........5 OR MODERATE.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....SOUTH 14 TO 19 MPH UNTIL 0100...THEN NORTHWEST
                    11 TO 16 MPH.
SMOKE DISPERSAL.....2700-3400.
CWR.................ZERO.
LAL.................1.

TIME (MDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........1      1      2      2      3      3
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............74     67     63     60     58     57
RH..............38     50     58     64     68     70
20 FT WIND......S 8    S 7    S 5    SW 4   W 5    NW 7
20 FT WIND GUST.10     10            5             10

$$
FORECASTER...DOERING
REQUESTED BY...ANTHONY KENNEDY
TYPE OF REQUEST...PRESCRIBED
.TAG 20100928.LAPLA.01/ABR