FNUS72 KJAX 091133
FWSJAX

SPOT FORECAST FOR IMPASSABLE BAY...USDA- FOREST SERVICE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
733 AM EDT THU JUN 9 2011

FORECAST IS BASED ON REQUEST TIME OF 0800 EDT ON JUNE 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM
EDT THIS EVENING...

.DISCUSSION...

MAINLY DRY CONDITIONS ARE EXPECTED TO CONTINUE UNDER A HIGH PRESSURE
RIDGE THROUGH FRIDAY.

A PERIOD OF RH AT OR BELOW 35 IS EXPECTED THIS AFTERNOON ALONG WITH ERC
VALUES EXPECTED TO BE ABOVE 35. THEREFORE...A RED FLAG WARNING HAS BEEN
ISSUED. A PERIOD OF RED FLAG CONDITIONS WILL BE POSSIBLE AGAIN FRIDAY.

WINDS ARE EXPECTED TO REMAIN GENERALLY OUT OF AN EASTERLY DIRECTION TODAY
WITH A MORE DRAMATIC INCREASE WITH THE SEA BREEZE PASSAGE DURING THE
MID AFTERNOON HOURS. RELATIVE HUMIDITY VALUES WILL SLOWLY FALL THROUGH
THE MORNING HOURS WITH A MORE DRAMATIC FALL DURING THE EARLY AFTERNOON
HOURS AS MIXING OF THE DRY AIR ALOFT TAKES PLACE.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). AREAS OF SMOKE.
MAX TEMPERATURE.....AROUND 92.
MIN HUMIDITY........31 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING EAST 10 MPH IN THE AFTERNOON.
LAL.................1.
MIXING HEIGHT.......900-1600 FT AGL INCREASING TO 6200-6600 FT AGL.
MIXING WINDS........EAST 10 TO 15 MPH.
DISPERSION INDEX....50.

TIME (EDT)      8 AM   10 AM  NOON   2 PM   4 PM
SKY (%).........23     23     15     33     33
WEATHER COV.....                     AREAS  AREAS
WEATHER TYPE....NONE   NONE   NONE   SMOKE  SMOKE
TEMP............66     80     88     92     91
RH..............83     59     45     34     34
20 FT WIND......E 1    E 5    E 8    E 9    E 12
20 FT WIND GUST.              10     15     15
MIX HGT (FT)....1600   1600   4100   6600   6600
TRANSPORT WIND..E 7    E 7    E 9    E 10   E 10
LAL.............1      1      1      1      1

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT). AREAS OF SMOKE.
MIN TEMPERATURE.....AROUND 66.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 5 TO 10 MPH IN THE EVENING
                    BECOMING LIGHT.
LAL.................1.
MIXING HEIGHT.......6200 FT AGL DECREASING TO 200-500 FT AGL.
MIXING WINDS........SOUTHEAST 10 MPH.
DISPERSION INDEX....2.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........47     39     39     36     32     32
WEATHER COV.....AREAS
WEATHER TYPE....SMOKE  NONE   NONE   NONE   NONE   NONE
TEMP............86     80     74     72     69     67
RH..............43     56     72     82     90     93
20 FT WIND......E 10   E 8    SE 6   SE 3   SE 2   SE 1
20 FT WIND GUST.15     10     10     5      5
MIX HGT (FT)....6200   1500   1500   900    200    200
TRANSPORT WIND..E 13   SE 13  SE 13  SE 8   SE 5   SE 5
LAL.............1      1      1      1      1      1

.FRIDAY...

SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).
MAX TEMPERATURE.....AROUND 94.
MIN HUMIDITY........38 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING EAST 5 TO 10 MPH IN THE
                    LATE MORNING AND AFTERNOON.
LAL.................1.
MIXING HEIGHT.......1100-1900 FT AGL INCREASING TO 6100-7200 FT AGL.
MIXING WINDS........EAST 5 TO 10 MPH.
DISPERSION INDEX....32.

$$
FORECASTER...HESS
REQUESTED BY...PETER MYERS
TYPE OF REQUEST...WILDFIRE
.TAG 20110609.IMPAS.01/JAX