759
FNCA72 TJSJ 231401
FWSSJU
SPOT FORECAST FOR SPEED SIGN FIRE...PRFD
NATIONAL WEATHER SERVICE SAN JUAN PR
1001 AM AST SAT MAY 23 2026
FORECAST IS BASED ON FORECAST START TIME OF 1000 AST ON MAY 23.
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
PARTLY CLOUDY CONDITIONS WITH CHANCE TO OBSERVE ISOLATED TO
SCATTERED SHOWERS THIS AFTERNOON. BREEZY TO LOCALLY WINDY
CONDITIONS FROM THE EAST TO SOUTHEAST AND SEA BREEZE VARIATIONS.
MINIMUM RH VALUES AROUND THE UPPER 50S INCREASING TO THE 80S
TONIGHT. A SIMILAR PATTERN IS EXPECTED ON SUNDAY.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). ISOLATED SHOWERS
IN THE LATE MORNING AND EARLY AFTERNOON, THEN
SCATTERED SHOWERS LATE IN THE AFTERNOON.
CHANCE OF PCPN......30 PERCENT.
MAX TEMPERATURE.....AROUND 88.
MIN HUMIDITY........59 PERCENT.
WIND (20 FT)........EAST WINDS 12 TO 17 MPH WITH GUSTS TO AROUND 32
MPH.
MIXING HEIGHT.......3700 FT AGL.
TRANSPORT WINDS.....EAST 20 TO 23 MPH.
SMOKE DISPERSAL.....GOOD (34700 KNOT-FT).
DISPERSION..........6.
EYE LEVEL WINDS.....EAST WINDS 8 TO 12 MPH WITH GUSTS TO AROUND 19
MPH.
TIME (AST) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........30 30 40 40 40 50 50 50
WEATHER COV.....ISO ISO ISO ISO ISO SCT SCT SCT
WEATHER TYPE....RW RW RW RW RW RW RW RW
TSTM COV........
CHC OF PCPN (%).10 10 20 20 20 30 30 30
TEMP............86 87 87 88 88 88 86 84
RH..............61 60 59 59 59 60 63 67
20 FT WIND DIR..E E E E E E E E
20 FT WIND SPD..14 15 16 18 20 18 17 15
20 FT WIND GUST.23 25 26 31 32 31 29 25
EYE LVL WND DIR.E E E E E E E E
EYE LVL WND SPD.8 9 10 11 12 11 10 9
EYE LVL WND GST.14 15 16 19 19 19 17 15
MIX HGT (KFT)...3.5 3.7 3.6 3.4 3.0 2.5 2.0 1.6
TRANSP WIND DIR.E E E E E E E E
TRANSP WIND SPD.20 20 21 22 23 22 21 20
DISPERSION......6 6 6 6 6 6 6 6
VRATE KT-FT/1K..56 56 56 56 35 35 35 35
VENTRATE CAT....FR FR FR FR PR PR PR PR
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT) THEN BECOMING
PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING
MOSTLY CLOUDY (55-65 PERCENT). NUMEROUS SHOWERS
EARLY IN THE EVENING, THEN ISOLATED SHOWERS
LATE IN THE EVENING. SCATTERED SHOWERS
OVERNIGHT.
CHANCE OF PCPN......60 PERCENT.
MIN TEMPERATURE.....AROUND 74.
MAX HUMIDITY........86 PERCENT.
WIND (20 FT)........EAST WINDS 7 TO 16 MPH.
MIXING HEIGHT.......200 FT AGL.
TRANSPORT WINDS.....EAST 13 TO 20 MPH DECREASING TO 8 TO 10 MPH
OVERNIGHT.
SMOKE DISPERSAL.....GOOD (34700 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (3800 KNOT-FT) LATE IN THE
NIGHT.
DISPERSION..........6.
EYE LEVEL WINDS.....EAST WINDS UP TO 10 MPH.
TIME (AST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........80 80 80 40 40 40 60 60 60 60 60 60
WEATHER COV.....NUM NUM NUM 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 (%).60 60 60 20 20 20 40 40 40 40 40 40
TEMP............81 80 79 78 77 76 76 75 74 74 74 76
RH..............73 77 80 82 83 84 84 85 85 86 85 80
20 FT WIND DIR..E E E E E E E E E E E E
20 FT WIND SPD..16 15 15 15 14 13 10 9 8 8 7 8
20 FT WIND GUST.26 26 25 24 23 21 12 10 9 9 8 9
EYE LVL WND DIR.E E E E E E E E E E E E
EYE LVL WND SPD.10 9 9 9 8 8 6 5 5 5 4 5
EYE LVL WND GST.16 16 15 14 14 13 7 6 5
MIX HGT (KFT)...1.4 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.3 0.2 0.3
TRANSP WIND DIR.E E E E E E E E E E E E
TRANSP WIND SPD.20 18 18 17 16 15 13 10 9 8 8 8
DISPERSION......6 6 6 6 6 6 6 6 6 6 6 6
VRATE KT-FT/1K..35 35 11 11 11 11 11 11 4 4 4 4
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
SUNDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). SCATTERED SHOWERS
IN THE AFTERNOON.
CHANCE OF PCPN......40 PERCENT.
MAX TEMPERATURE.....AROUND 88.
MIN HUMIDITY........58 PERCENT.
WIND (20 FT)........EAST WINDS 8 TO 16 MPH SHIFTING TO THE
SOUTHEAST 18 TO 21 MPH WITH GUSTS TO AROUND 35
MPH IN THE AFTERNOON.
MIXING HEIGHT.......3500 FT AGL.
TRANSPORT WINDS.....EAST 9 TO 17 MPH INCREASING TO 20 TO 24 MPH IN
THE AFTERNOON.
SMOKE DISPERSAL.....POOR (3800 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (40500 KNOT-FT) IN THE
AFTERNOON.
DISPERSION..........6.
EYE LEVEL WINDS.....EAST WINDS 5 TO 10 MPH SHIFTING TO THE 11 TO 13
MPH WITH GUSTS TO AROUND 21 MPH IN THE
AFTERNOON.
TIME (AST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........28 28 28 28 28 28 60 60 60 60 60 60
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 40 40 40 40 40 40
TEMP............78 80 82 84 85 87 87 88 88 88 86 84
RH..............74 68 64 62 61 59 58 58 58 59 62 66
20 FT WIND DIR..E E E E E E E SE SE SE E E
20 FT WIND SPD..8 8 9 12 14 16 18 20 21 21 21 20
20 FT WIND GUST.9 9 10 13 23 26 30 33 35 35 35 32
EYE LVL WND DIR.E E E E E E E SE SE SE E E
EYE LVL WND SPD.5 5 5 7 8 10 11 12 13 13 13 12
EYE LVL WND GST. 6 8 14 16 18 20 21 21 21 19
MIX HGT (KFT)...0.6 1.0 1.6 2.3 3.1 3.5 3.5 3.1 2.7 2.4 2.1 1.8
TRANSP WIND DIR.E E E E E E E E E E E E
TRANSP WIND SPD.9 10 12 14 15 17 20 22 23 24 24 24
DISPERSION......6 6 6 6 6 6 6 6 6 6 6 6
VRATE KT-FT/1K..4 4 41 41 41 41 41 41 40 40 40 40
VENTRATE CAT....PR PR FR FR FR FR FR FR PR PR PR PR
FORECASTER...Y. ZAYAS
REQUESTED BY...JOSE M. MARTINEZ
TYPE OF REQUEST...WILDFIRE
.TAG 2614333.0/SJU
.DELDT 05/23/26
.FORMATTERVERSION 2.0.0
.EMAIL JOSEMARTIN@DSP.PR.GOV
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