FNUS73 KABR 192121
FWSABR

SPOT FORECAST FOR LA PLANT RX...BIA
NATIONAL WEATHER SERVICE ABERDEEN SD
421 PM CDT MON SEP 19 2011

FORECAST IS BASED ON IGNITION TIME OF 1530 MDT ON SEPTEMBER 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...HIGH WIND WARNING IN EFFECT FROM MIDNIGHT MDT UNTIL 6 PM MDT TUESDAY...

.DISCUSSION...
A STRONG COLD FRONT WILL MOVE THROUGH BY MIDNIGHT SHIFTING WINDS AROUND
FROM SOUTHWEST AT 10 TO 20 MPH THIS EVENING TO NORTHWEST. NORTHWEST
WINDS WILL BECOME VERY STRONG AT 25 TO 35 MPH GUSTING TO 50 MPH OR HIGHER
AFTER MIDNIGHT. ALSO...SOME SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS
ARE EXPECTED TO DEVELOP ALONG THE COLD FRONT LATE THIS EVENING.

.REST OF TODAY...
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT CLOUD).
MAX TEMPERATURE.....78-83.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 10 TO 20 MPH.
HAINES INDEX........6 OR HIGH.
MIXING HEIGHT.......8200 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....AROUND 158900.
CWR.................ZERO.

TIME (MDT)      3 PM   5 PM
SKY (%).........43     49
WEATHER COV.....
WEATHER TYPE....NONE   NONE
TEMP............80     77
RH..............25     28
20 FT WIND......SW 12  S 12
20 FT WIND GUST.15     15

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT CLOUD). A SLIGHT
                    CHANCE OF SHOWERS UNTIL 0100. ISOLATED
                    THUNDERSTORMS. A CHANCE OF SHOWERS AFTER 0100.
MIN TEMPERATURE.....46-51.
MAX HUMIDITY........67-72 PERCENT.
WIND (20 FT)........WINDY. NORTHWEST WINDS 25 TO 35 MPH WITH GUSTS
                    TO AROUND 50 MPH. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS.
HAINES INDEX........5 OR MODERATE.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....WEST 22 TO 27 MPH UNTIL 0100...THEN NORTHWEST
                    49 TO 54 MPH.
SMOKE DISPERSAL.....5300-11100.
CWR.................10 PERCENT.

TIME (MDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........51     63     79     92     85     76
WEATHER COV.....S CHC  S CHC  S CHC  CHANCE CHANCE CHANCE
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TEMP............74     65     60     56     54     52
RH..............31     46     58     70     71     72
20 FT WIND......S 10   SW 14  W 15   NW 18  NW 25  NW 25
20 FT WIND GUST.       15     25     30     50     50

.TUESDAY...
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT CLOUD).
MAX TEMPERATURE.....62-67.
MIN HUMIDITY........38-43 PERCENT.
WIND (20 FT)........WINDY. NORTHWEST WINDS 26 TO 36 MPH WITH GUSTS
                    TO AROUND 60 MPH UNTIL 1800...THEN 20 TO 25 MPH
                    WITH GUSTS TO AROUND 40 MPH.
HAINES INDEX........3 OR VERY LOW.
MIXING HEIGHT.......2700 FT AGL UNTIL 1300...THEN 7100 FT AGL.
TRANSPORT WINDS.....NORTHWEST 57 TO 62 MPH UNTIL 1300...THEN 41 TO
                    46 MPH.
SMOKE DISPERSAL.....AROUND 139400 UNTIL 1300...THEN AROUND 259200.
CWR.................ZERO.

TIME (MDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
SKY (%).........69     62     52     45     45     45
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............51     53     57     61     63     63
RH..............71     65     54     46     42     40
20 FT WIND......NW 27  NW 29  NW 31  NW 32  NW 28  NW 24
20 FT WIND GUST.50     55     55     60     55     45

$$
FORECASTER...MOHR/PARKIN
REQUESTED BY...ANTHONY KENNEDY
TYPE OF REQUEST...PRESCRIBED
.TAG 20110919.LAPLA.01/ABR