FNUS74 KOUN 211358
FWSOUN

SPOT FORECAST FOR UNIT 44...BLACK KETTLE N.G
NATIONAL WEATHER SERVICE NORMAN OK
858 AM CDT TUE APR 21 2009

FORECAST IS BASED ON IGNITION TIME OF 0905 CDT ON APRIL 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...TODAY AND WEDNESDAY WILL FEATURE VERY WARM TEMPERATURES.
RELATIVE HUMIDITY WILL FALL TO BETWEEN 15 AND 20 PERCENT IN WESTERN
OKLAHOMA AND WESTERN NORTH TEXAS BOTH DAYS. TODAY A STALLED FRONT
RUNNING FROM WOODWARD TO OKLAHOMA CITY AND DURANT...WILL SEPARATE LIGHT
NORTHEAST WINDS FROM LIGHT WEST WINDS. ON WEDNESDAY...THE FRONT WILL
LIFT NORTHWARD...AND SOUTHWESTERLY WINDS MAY BECOME BREEZY IN WARMER
AREAS SOUTH OF THE FRONT. SPEEDS WILL STILL AVERAGE LESS THAN 20 MPH.
WINDS WILL THEN BECOME MORE CONSISTENTLY STRONG FROM THE SOUTH BEGINNING
THURSDAY...AND CONTINUING UNTIL A COLD FRONT ARRIVES EARLY SUNDAY.
DURING THIS PERIOD...AFTERNOON WIND GUSTS WILL EXCEED 30 MPH...AND IN
SOME PLACES 40 MPH. GULF MOISTURE WILL RETURN...HOWEVER...AND WILL
KEEP AFTERNOON HUMIDITY AT 30 TO 50 PERCENT ACROSS THE REGION. THERE IS
A CHANCE OF RAIN WHEN THE FRONT ARRIVES SUNDAY.

.TODAY...

SKY/WEATHER.........SUNNY (0-5 PERCENT).
MAX TEMPERATURE.....AROUND 82.
MIN HUMIDITY........21 PERCENT.
20-FOOT WINDS.......NORTHWEST WINDS 5 TO 8 MPH EARLY IN THE MORNING
                    BECOMING LIGHT...THEN BECOMING NORTHWEST 8 TO
                    12 MPH IN THE AFTERNOON.
MIXING HEIGHT.......LESS THAN 100 FT AGL INCREASING TO 10300-11900
                    FT AGL.
TRANSPORT WINDS.....NORTHWEST 8 TO 17 MPH.

TIME (CDT)      9 AM   11 AM  1 PM   3 PM   5 PM   7 PM
SKY (%).........CLEAR  CLEAR  CLEAR  CLEAR  CLEAR  PCLDY
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............52     68     77     80     81     79
RH..............63     39     28     23     21     23
20 FT WIND......N 7    N 3    W 8    NW 12  NW 10  NW 8
20 FT WIND GUST.10     10     10     15            10
MIX HGT (FT)....200    4100   10300  11900  11700  9700
MIX HGT (M).....60     1250   3140   3630   3570   2960
TRANSPORT WIND..NW 8   NW 12  NW 17  NW 17  NW 15  NW 13
TRAN WIND (M/S).NW 4   NW 5   NW 8   NW 8   NW 7   NW 6

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........63 PERCENT.
20-FOOT WINDS.......NORTHWEST WINDS 6 TO 8 MPH SHIFTING TO THE
                    NORTHEAST AROUND 5 MPH EARLY IN THE
                    EVENING...THEN BECOMING LIGHT LATE IN THE
                    EVENING BECOMING SOUTH 5 TO 6 MPH LATE IN THE
                    EVENING.
MIXING HEIGHT.......9700 FT AGL DECREASING TO LESS THAN 100 FT AGL.
TRANSPORT WINDS.....NORTHWEST 9 TO 13 MPH SHIFTING TO THE SOUTH 3
                    TO 7 MPH EARLY IN THE EVENING.

.WEDNESDAY...

SKY/WEATHER.........SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....AROUND 86.
MIN HUMIDITY........20 PERCENT.
20-FOOT WINDS.......SOUTHEAST WINDS 5 TO 12 MPH.
MIXING HEIGHT.......100-1900 FT AGL INCREASING TO 16200-17300 FT
                    AGL.
TRANSPORT WINDS.....WEST 6 TO 12 MPH INCREASING TO 17 TO 21 MPH
                    EARLY IN THE AFTERNOON.

$$
FORECASTER...RUFF
REQUESTED BY...FLAVIO GALLEGOS
TYPE OF REQUEST...PRESCRIBED
.TAG 20090421.UNIT4.01/OUN