Suppression Forecast
Issued by NWS San Juan, PR

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000
FNCA72 TJSJ 230855
FWSSJU

Spot Forecast for Hurricane Maria Support...USFS
National Weather Service SAN JUAN PR
455 AM AST Thu Nov 23 2017

Forecast is based on incident time of 0600 AST on November 22.
If conditions become unrepresentative...contact the National Weather
Service.

Questions or concerns about this forecast, contact (787) 253-4501.

.DISCUSSION...Moisture will begin to increase today after mostly
sunny skies this morning. Some showers can already be seen
entering the forecast area in the local outer Atlantic
waters northeast of El Yunque. Relative humidities are expected
to remain above critical levels. Winds will be light until sea
breezes begin but should remain below 15 mph. Showers could be
heavy and an isolated thunderstorm cannot be ruled out but is
unlikely. Moisture will continue to increase through Friday. Fire
danger is considered to be low and soil moisture also remains
high.


.WEDNESDAY...

Sky/weather.........Mostly sunny (20-30 percent). Isolated showers.
CHANCE OF PCPN......20 percent.
LAL.................No Tstms.
Max temperature.....Around 85.
Min humidity........65 percent.
HEAT INDEX..........94.
SURFACE WINDS.......East winds 6 to 8 mph.
WIND (20 FT)........
 SLOPE/VALLEY.......East winds 6 to 8 mph.

TIME (AST)      6 AM      9 AM      NOON      3 PM
SKY (%).........34        34        18        18
WEATHER COV.....ISOLTD    ISOLTD    ISOLTD    ISOLTD
WEATHER TYPE....RNSHWR    RNSHWR    RNSHWR    RNSHWR
TSTM COV........
CHC OF PCPN (%).20        20        10        10
LAL.............1         1         1         1
TEMP............73        80        85        83
RH..............90        74        65        70
HEAT INDEX (F)..74        86        94        93
20 FT WIND......SE 5G10   SE 5G10   E 6G10    E 6G10
SURFACE WIND....SE 6G10   SE 6G10   E 7G10    E 7G10

.WEDNESDAY NIGHT...

Sky/weather.........Partly cloudy (30-40 percent). Scattered
                    showers in the late evening and overnight.
CHANCE OF PCPN......30 percent.
LAL.................No Tstms.
Min temperature.....Around 73.
Max humidity........100 percent.
HEAT INDEX..........75.
SURFACE WINDS.......Southeast winds 5 to 6 mph in the evening
                    becoming light.
WIND (20 FT)........
 SLOPE/VALLEY.......Southeast winds 5 to 6 mph in the evening
                    becoming light.

TIME (AST)      6 PM      9 PM      MIDNGT    3 AM
SKY (%).........23        23        49        49
WEATHER COV.....ISOLTD    ISOLTD    SCTTRD    SCTTRD
WEATHER TYPE....RNSHWR    RNSHWR    RNSHWR    RNSHWR
TSTM COV........
CHC OF PCPN (%).10        10        30        30
LAL.............1         1         1         1
TEMP............78        76        75        74
RH..............82        90        90        97
HEAT INDEX (F)..79        78        76        76
20 FT WIND......E 5G10    E 4G5     SE 3G5    SE 2G5
SURFACE WIND....E 6G10    E 5       SE 4G5    SE 3G5

.TODAY...

Sky/weather.........Partly sunny (55-65 percent). Scattered
                    showers.
CHANCE OF PCPN......50 percent.
LAL.................No Tstms.
Max temperature.....Around 85.
Min humidity........72 percent.
HEAT INDEX..........91.
SURFACE WINDS.......Light winds becoming east 5 to 9 mph in the
                    late morning and afternoon.
WIND (20 FT)........
 SLOPE/VALLEY.......Light winds becoming east 5 to 9 mph in the
                    late morning and afternoon.

TIME (AST)      6 AM      9 AM      NOON      3 PM
SKY (%).........67        67        51        51
WEATHER COV.....SCTTRD    SCTTRD    SCTTRD    SCTTRD
WEATHER TYPE....RNSHWR    RNSHWR    RNSHWR    RNSHWR
TSTM COV........
CHC OF PCPN (%).50        50        30        30
LAL.............1         1         1         1
TEMP............74        81        85        83
RH..............100       79        72        77
HEAT INDEX (F)..76        84        91        86
20 FT WIND......SE 3G5    E 4G5     E 6G10    E 6G10
SURFACE WIND....SE 4G5    E 5       E 7G10    E 8G10

$$
Forecaster...Snell
Requested by...Michael j Williams
Type of request...OTHER
.TAG 1718980.3/SJU
.EMAIL michaelwilliams@fs.fed.us



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