FNUS73 KGID 091518
FWSGID

SPOT FORECAST FOR MACON SW...USFWS
NATIONAL WEATHER SERVICE HASTINGS NE
1018 AM CDT FRI APR 9 2010

FORECAST IS BASED ON IGNITION TIME OF 1300 CDT ON APRIL 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
SURFACE COLD FRONT SHOULD BE THROUGH THE BURN AREA NOW...WITH A GRADUALLY
DEEPENING (WITH HEIGHT) NORTH WIND FIELD. WINDS ARE THE ISSUE WITH SOME
UNCERTAINTIES. ONE OF WHICH IS TRANSPORT WINDS SHOULD FAVOR A WEST NORTHWEST
DIRECTION...BUT COULD VARY FROM 240 TO 020 DEGREES ON A COMPASS. SPEEDS SHOULD
BE HIGHEST NOON OR AROUND IGNITION...WHEN SUSTAINED SPEEDS NEAR 20 MPH MAY
RESULT FOR 1 TO 3 HOURS. THE GUSTINESS SHOULD TAPER OFF BY MID AFTERNOON AT
THE LATEST. SURFACE DEWPOINTS DROP INTO THE 20S BEHIND THE FRONT...SO RELATIVE
HUMIDITIES WILL DROP QUICKLY...AND THE BURN AREA COULD BE DOWN AS LOW AS 20 TO 25
PERCENT RELATIVE HUMIDITY BY MID AFTERNOON. MOST AREAS ARE ALREADY AT 45 TO
50 PERCENT RELATIVE HUMIDITY. DISPERSION SHOULD BE OKAY.

THE FRONT WILL STALL SOUTH OF AREA...AND WINDS WILL ALREADY START TO TURN
NORTHEASTERLY BY LATE AFTERNOON.

WITH THIS FRONTAL PASSAGE...FORECASTS CAN BE TRICKY. WATCH THE RELATIVE HUMIDITY
AND LOOK FOR THE STRONGEST WINDS FROM 10 AM TO 2 PM...AND WINDS TO DROP OFF QUICKLY
THEREAFTER.

.TODAY...

SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....AROUND 65.
MIN HUMIDITY........25 PERCENT.
WIND (20 FT)........NORTH TO NORTHWEST 10 TO 15 MPH SHIFTING TO THE
                    NORTHEAST LATE IN THE AFTERNOON. LOOK FOR LOCALLY
                    GUSTY WINDS TO 25 MPH AROUND THE NOON HOUR.
HAINES INDEX........5.
MIXING HEIGHT.......RISING TO 3500 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH AT IGNITION...NORTHEAST 10 MPH BY
                    EVENING.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (25-35 PERCENT).
MIN TEMPERATURE.....AROUND 39.
MAX HUMIDITY........74 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 6 TO 8 MPH.
HAINES INDEX........4 TO 5.
MIXING HEIGHT.......LOWERING TO LESS THAN 1000 FT AGL.
TRANSPORT WINDS........NORTHEAST AROUND 9 MPH.

.SATURDAY...
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).
MAX TEMPERATURE.....AROUND 66.
MIN HUMIDITY........39 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 6 MPH SHIFTING TO THE NORTHEAST
                    7 TO 16 MPH WITH GUSTS TO AROUND 30 MPH IN THE
                    AFTERNOON.
HAINES INDEX........3 TO 4.
MIXING HEIGHT.......RISING TO 4500 FT AGL.
TRANSPORT WINDS........EAST AROUND 10 MPH.

.FORECAST DAYS 3 THROUGH 7...
.SUNDAY...PARTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE LOWER
70S. NORTHEAST WINDS AROUND 11 MPH.
.MONDAY...PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE MID
70S. EAST WINDS AROUND 10 MPH.
.TUESDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE MID 70S.
SOUTHEAST WINDS AROUND 18 MPH.
.WEDNESDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS AROUND 50. HIGHS IN THE LOWER 70S.
.THURSDAY...PARTLY CLOUDY. LOWS AROUND 50. HIGHS IN THE LOWER
70S.

$$
FORECASTER...NWS/MIKE MORITZ
REQUESTED BY...BRICE KROHN
TYPE OF REQUEST...PRESCRIBED
.TAG 20100409.MACON.01/GID