FNUS74 KHUN 131658
FWSHUN

SPOT FORECAST FOR KEY CAVE UNIT 6 2011...U.S.F.W.S.   KCNWR
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1158 AM CDT WED APR 13 2011

FORECAST IS BASED ON IGNITION TIME OF 1200 CDT ON APRIL 13.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE WILL DOMINATE THE WEATHER PATTERN ACROSS THE SOUTHEAST
AND THEREFORE PROVIDE DRY WEATHER AND LIGHT SURFACE AND 20-FOOT WINDS
/WINDS AROUND 5MPH OR LESS/ THROUGH THE DAY TODAY AT THE BURN SITE.
MIXING HEIGHTS WILL INCREASE THROUGH THE LATE AFTERNOON HOURS WITH
LIGHT AND VARIABLE WINDS. THESE WINDS WILL BECOME CALM AFTER SUNSET
THIS EVENING. AFTERNOON RELATIVE HUMIDITIES WILL HOVER BETWEEN 25 AND
30 PERCENT. DISPERSION WILL DECREASE THROUGH LATE THIS AFTERNOON.

OVERNIGHT TONIGHT...HUMIDITY VALUES WILL REBOUND AS MOISTURE INCREASES
ACROSS THE AREA AHEAD OF AN APPROACHING STORM SYSTEM TO THE WEST.
SOUTHERLY FLOW WILL DEVELOP ACROSS THE AREA TOMORROW AND STRENGTHEN AS
THE SYSTEM NEARS THE BURN SITE. THE NEXT CHANCE OF RAIN WILL BE FRIDAY
AS SHOWERS AND THUNDERSTORMS AFFECT THE REGION ALONG A COLD FRONT
SWEEPING THROUGH THE AREA.

.TODAY...

MAX TEMPERATURE.....75 TO 78.
MIN HUMIDITY........26 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......200 FT AGL INCREASING TO 2800-3900 FT AGL IN
                    THE LATE MORNING AND AFTERNOON.
TRANSPORT WINDS.....NORTHEAST 3 TO 6 MPH SHIFTING TO THE NORTHWEST
                    AROUND 2 MPH LATE IN THE AFTERNOON.

TIME (CDT)      NOON   2 PM   4 PM
TEMP............70     75     77
RH..............36     28     26
20 FT WIND......NE 3   N 2    NW 2
MIX HGT (FT)....2800   3500   3900
TRANSPORT WIND..N 6    NE 3   NW 2
DISPERSION IDX..20     15     11

.TONIGHT...

MIN TEMPERATURE.....46 TO 49.
MAX HUMIDITY........93 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......3300-3900 FT AGL DECREASING TO 200-300 FT AGL
                    IN THE LATE EVENING AND OVERNIGHT.
TRANSPORT WINDS.....NORTHWEST AROUND 2 MPH SHIFTING TO THE EAST 1
                    TO 5 MPH.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
TEMP............74     66     59     55     52     49
RH..............30     43     60     69     77     85
20 FT WIND......NE 1   E 1    NE 2   E 1    E 1    E 2
MIX HGT (FT)....3900   3300   300    300    200    200
TRANSPORT WIND..NW 2   E 1    E 3    E 3    E 5    E 5
DISPERSION IDX..11     1      2      2      2      2

.THURSDAY...

MAX TEMPERATURE.....79 TO 82.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 5 TO 7 MPH IN
                    THE LATE MORNING AND AFTERNOON.
MIXING HEIGHT.......200 FT AGL INCREASING TO 6800 FT AGL.
TRANSPORT WINDS.....SOUTH 5 TO 6 MPH.

TIME (CDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
TEMP............47     53     65     74     79     82
RH..............90     78     53     39     33     30
20 FT WIND......E 2    SE 3   SE 5   S 6    S 6    S 7
MIX HGT (FT)....200    200    4300   4300   6100   6800
TRANSPORT WIND..E 5    E 5    E 6    E 6    S 6    S 6
DISPERSION IDX..1      1      29     29     39     42

$$
FORECASTER...AMIN
REQUESTED BY...JASON VEHRS
TYPE OF REQUEST...PRESCRIBED
.TAG 20110413.KEYCA.01/HUN