557
FNCA72 TJSJ 240608
FWSSJU
SPOT FORECAST FOR SPEED SIGN FIRE...PRFD
NATIONAL WEATHER SERVICE SAN JUAN PR
208 AM AST SUN MAY 24 2026
FORECAST IS BASED ON FORECAST START TIME OF 0800 AST ON MAY 24.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS OR CONCERNS
WITH THIS FORECAST AT
PHONE: 787-253-4586.
DISCUSSION
FAIR WEATHER CONDITIONS UNDER MOSTLY CLEAR SKIES ARE EXPECTED
DURING THE MORNING HOURS. CLOUD COVERAGE WILL BEGIN TO INCREASE BY
MID-MORNING, WITH THE WITH THE CHANCE TO OBSERVE ISOLATED TO
SCATTERED SHOWERS IN THE AFTERNOON. BREEZY TO LOCALLY WINDY
CONDITIONS FROM THE EAST TO EAST-SOUTHEAST AND SEA BREEZE VARIATIONS.
MINIMUM RH VALUES AROUND THE UPPER 50S TO LOW 60S.
REST OF TODAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING
MOSTLY SUNNY (45-55 PERCENT). SCATTERED
SHOWERS.
CHANCE OF PCPN......50 PERCENT.
MAX TEMPERATURE.....AROUND 89.
MIN HUMIDITY........60 PERCENT.
WIND (20 FT)........EAST WINDS 9 TO 18 MPH WITH GUSTS TO AROUND 30
MPH INCREASING TO 18 TO 21 MPH WITH GUSTS TO
AROUND 35 MPH IN THE AFTERNOON.
MIXING HEIGHT.......3500 FT AGL.
TRANSPORT WINDS.....EAST 15 TO 21 MPH.
SMOKE DISPERSAL.....FAIR (29100 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (44500 KNOT-FT) IN THE
AFTERNOON.
DISPERSION..........6.
EYE LEVEL WINDS.....EAST WINDS 5 TO 11 MPH WITH GUSTS TO AROUND 18
MPH INCREASING TO 11 TO 13 MPH WITH GUSTS TO
AROUND 21 MPH IN THE AFTERNOON.
TIME (AST) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........70 70 70 70 70 70 70 50 50 50
WEATHER COV.....SCT SCT SCT SCT SCT SCT SCT SCT SCT SCT
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW
TSTM COV........
CHC OF PCPN (%).50 50 50 50 50 50 50 30 30 30
TEMP............82 84 85 86 87 88 88 87 86 84
RH..............67 64 63 61 61 60 60 62 64 69
20 FT WIND DIR..E E E E E E E E E E
20 FT WIND SPD..9 12 14 16 18 20 21 21 20 18
20 FT WIND GUST.10 13 23 26 30 33 35 33 32 30
EYE LVL WND DIR.E E E E E E E E E E
EYE LVL WND SPD.5 7 8 10 11 12 13 13 12 11
EYE LVL WND GST.6 8 14 16 18 20 21 20 19 18
MIX HGT (KFT)...1.9 2.5 3.2 3.5 3.3 2.9 2.4 2.0 1.7 1.5
TRANSP WIND DIR.E E E E E E E E E E
TRANSP WIND SPD.15 16 17 18 20 21 21 21 21 20
DISPERSION......6 6 6 6 6 6 6 6 6 6
VRATE KT-FT/1K..45 45 45 45 45 45 29 29 29 29
VENTRATE CAT....FR FR FR FR FR FR PR PR PR PR
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT).
CHANCE OF PCPN......10 PERCENT.
MIN TEMPERATURE.....AROUND 75.
MAX HUMIDITY........85 PERCENT.
WIND (20 FT)........EAST WINDS 9 TO 18 MPH. GUSTS UP TO 31 MPH.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....EAST 9 TO 18 MPH DECREASING TO 8 TO 9 MPH
OVERNIGHT.
SMOKE DISPERSAL.....FAIR (29100 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (4100 KNOT-FT) LATE IN THE
NIGHT.
DISPERSION..........5.
EYE LEVEL WINDS.....EAST WINDS 5 TO 11 MPH. GUSTS UP TO 31 MPH.
TIME (AST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........20 20 20 30 30 30 20 20 20 20 20 20
WEATHER COV..... ISO ISO ISO
WEATHER TYPE.... RW RW RW
TSTM COV........
CHC OF PCPN (%).0 0 0 10 10 10 0 0 0 0 0 0
TEMP............82 80 79 79 78 77 77 76 75 75 75 77
RH..............74 76 78 79 80 81 82 83 84 85 84 78
20 FT WIND DIR..E E E E E E E E E E E E
20 FT WIND SPD..18 18 18 17 15 13 12 10 10 9 9 10
20 FT WIND GUST.30 31 31 28 24 21 13 12 12 10 10 12
EYE LVL WND DIR.E E E E E E E E E E E E
EYE LVL WND SPD.11 11 11 10 9 8 7 6 6 5 5 6
EYE LVL WND GST.18 19 19 17 14 13 8 7 7 6 6 7
MIX HGT (KFT)...1.4 1.4 1.4 1.1 0.8 0.6 0.4 0.4 0.4 0.3 0.3 0.4
TRANSP WIND DIR.E E E E E E E E E E E E
TRANSP WIND SPD.18 17 16 15 14 13 10 9 8 8 8 9
DISPERSION......6 6 6 6 6 6 6 6 4 4 4 4
VRATE KT-FT/1K..29 29 9 9 9 9 9 9 4 4 4 4
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
MEMORIAL DAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). SCATTERED SHOWERS
IN THE AFTERNOON.
CHANCE OF PCPN......30 PERCENT.
MAX TEMPERATURE.....AROUND 90.
MIN HUMIDITY........56 PERCENT.
WIND (20 FT)........EAST WINDS 10 TO 17 MPH WITH GUSTS TO AROUND 30
MPH INCREASING TO 21 TO 22 MPH WITH GUSTS TO
AROUND 36 MPH LATE IN THE MORNING.
MIXING HEIGHT.......4300 FT AGL.
TRANSPORT WINDS.....EAST 10 TO 17 MPH INCREASING TO 20 TO 26 MPH
LATE IN THE MORNING.
SMOKE DISPERSAL.....POOR (4100 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (55200 KNOT-FT) IN THE
AFTERNOON.
DISPERSION..........5.
EYE LEVEL WINDS.....EAST WINDS 6 TO 10 MPH WITH GUSTS TO AROUND 18
MPH INCREASING TO AROUND 13 MPH WITH GUSTS TO
AROUND 22 MPH LATE IN THE MORNING.
TIME (AST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........29 29 29 29 29 29 50 50 50 50 50 50
WEATHER COV.....ISO ISO ISO ISO ISO ISO SCT SCT SCT SCT SCT SCT
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW
TSTM COV........
CHC OF PCPN (%).10 10 10 10 10 10 30 30 30 30 30 30
TEMP............79 82 84 86 87 90 90 90 90 90 88 86
RH..............72 66 62 59 57 56 57 57 57 57 58 62
20 FT WIND DIR..E E E E E E E E E E E E
20 FT WIND SPD..10 10 12 15 17 21 22 22 22 22 21 21
20 FT WIND GUST.12 12 20 24 30 35 36 36 36 36 35 35
EYE LVL WND DIR.E E E E E E E E E E E E
EYE LVL WND SPD.6 6 7 9 10 13 13 13 13 13 13 13
EYE LVL WND GST.7 7 12 14 18 21 22 22 22 22 21 21
MIX HGT (KFT)...0.6 1.1 1.7 2.7 3.7 4.3 4.1 3.6 2.9 2.6 2.4 2.1
TRANSP WIND DIR.E E E E E E E E E E E E
TRANSP WIND SPD.10 12 14 16 17 20 22 25 26 26 24 23
DISPERSION......4 4 6 6 6 6 6 6 6 6 6 6
VRATE KT-FT/1K..4 4 55 55 55 55 55 55 46 46 46 46
VENTRATE CAT....PR PR FR FR FR FR FR FR FR FR FR FR
FORECASTER...G. RIVERA
REQUESTED BY...JOSE M. MARTINEZ
TYPE OF REQUEST...WILDFIRE
.TAG 2614333.1/SJU
.DELDT 05/24/26
.FORMATTERVERSION 2.0.0
.EMAIL JOSEMARTIN@DSP.PR.GOV
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