FNUS73 KABR 171400
FWSABR

SPOT FORECAST FOR SIMPSON...STATE OF SOUTH DAKOTA
NATIONAL WEATHER SERVICE ABERDEEN SD
900 AM CDT THU MAY 17 2012

FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON MAY 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

A WEAK TROF OF LOW PRESSURE CENTERED OVER THE WESTERN DAKOTAS WILL
RESULT IN LIGHT SOUTH FLOW THROUGHOUT THE DAY IN NORTH CENTRAL
SOUTH DAKOTA. WINDS WILL VARY SLIGHTLY BETWEEN SOUTHWEST AND
SOUTHEAST...DEPENDENT ON LOCAL TERRAIN INFLUENCE. AS THE LOW
DEEPENS OVERNIGHT...WINDS WILL BECOME PREDOMINANTLY OUT OF THE
SOUTH/SOUTHEAST...AND INCREASING SLIGHTLY...AND BRING IN A HIGHER
HUMIDITY AIRMASS.

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT CLOUD).
MAX TEMPERATURE.....86-91.
MIN HUMIDITY........23-28 PERCENT.
WIND (20 FT)........SOUTH WINDS AROUND 6 MPH UNTIL 1800...THEN
                    LIGHT.
HAINES INDEX........5 OR MODERATE.
MIXING HEIGHT.......1900 FT AGL UNTIL 1300...THEN 4400 FT AGL.
TRANSPORT WINDS.....SOUTH 12 TO 18 MPH.
SMOKE DISPERSAL.....27000-42000.
CWR.................ZERO.
LAL.................1.

TIME (CDT)      9 AM   11 AM  1 PM   3 PM   5 PM
SKY (%).........26     28     30     31     31
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE
TEMP............64     74     82     86     87
RH..............48     35     29     26     26
20 FT WIND......SE 5   S 5    S 5    S 5    S 5
20 FT WIND GUST.              10

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT CLOUD).
MIN TEMPERATURE.....57-62.
MAX HUMIDITY........74-79 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 2100...THEN SOUTHEAST 5 TO 8
                    MPH.
HAINES INDEX........5 OR MODERATE.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....EAST 10 TO 17 MPH.
SMOKE DISPERSAL.....2500-3700.
CWR.................ZERO.
LAL.................1.

TIME (CDT)      7 PM   9 PM   11 PM  1 AM   3 AM   5 AM
SKY (%).........32     30     28     27     27     28
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............85     76     69     65     62     59
RH..............29     40     53     62     70     76
20 FT WIND......S 4    SE 5   E 6    E 7    E 7    E 6
20 FT WIND GUST.5             10     10     10     10

$$
FORECASTER...CONNELLY
REQUESTED BY...DAN NELSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20120517.SIMPS.02/ABR