906
FNCA72 TJSJ 011331
FWSSJU
SPOT FORECAST FOR SOUTH ZONE SEVERITY 2026...PRFD
NATIONAL WEATHER SERVICE SAN JUAN PR
931 AM AST MON JUN 1 2026
FORECAST IS BASED ON FORECAST START TIME OF 1000 AST ON JUNE 01.
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
HIGH CONCENTRATIONS OF SAHARAN DUST PARTICLES WILL PREVAIL ACROSS THE
AREA TODAY, WITH LITTLE TO NO RAINFALL ACTIVITY EXPECTED ACROSS THE ISLANDS.
OVERALL, HAZY CONDITIONS ARE EXPECTED TO PREVAIL ACROSS PUERTO RICO FOR THE
REST OF THE WORKWEEK. WIND SPEEDS ARE EXPECTED TO PEAK AROUND 17 TO 20 MPH
FROM THE SOUTHEAST WITH GUSTS BETWEEN 25 AND 30 MPH. NO ADDITIONAL
FIRE WEATHER THREAT FOR TODAY.
REST OF TODAY
SKY/WEATHER.........SUNNY (15-25 PERCENT). ISOLATED SHOWERS LATE IN
THE MORNING. HAZE THROUGH THE DAY.
CHANCE OF PCPN......20 PERCENT.
MAX TEMPERATURE.....AROUND 90.
MIN HUMIDITY........55 PERCENT.
MAX APPARENT TEMP...97.
SURFACE WINDS (MPH).SOUTHEAST WINDS 16 TO 20 MPH WITH GUSTS TO
AROUND 32 MPH.
WIND (20 FT)........SOUTHEAST WINDS 16 TO 20 MPH WITH GUSTS TO
AROUND 32 MPH.
MIXING HEIGHT.......4000 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 21 TO 24 MPH.
SMOKE DISPERSAL.....GOOD (59400 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (76000 KNOT-FT) IN THE
AFTERNOON.
DISPERSION..........6.
TIME (AST) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........30 30 5 5 5 5 5 5
WEATHER COV.....DEF DEF DEF DEF DEF DEF DEF DEF
WEATHER TYPE....HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ
TSTM COV........
CHC OF PCPN (%).20 20 0 0 0 0 0 0
TEMP............87 88 89 90 90 89 89 87
RH..............58 56 55 55 55 56 58 61
APARNT TMP (F)..93 95 96 97 97 96 95 93
20 FT WIND DIR..SE SE SE SE SE SE SE SE
20 FT WIND SPD..17 17 18 20 20 18 17 16
20 FT WIND GUST.29 29 31 32 32 31 28 26
SURFACE WND DIR.SE SE SE SE SE SE SE SE
SURFACE WND SPD.17 17 18 20 20 18 17 16
SURFACE WND GST.29 29 31 32 32 31 28 26
MIX HGT (KFT)...4.0 4.0 3.9 3.6 3.4 3.3 3.3 3.2
TRANSP WIND DIR.SE SE SE SE SE SE SE SE
TRANSP WIND SPD.23 23 24 24 24 23 22 21
DISPERSION......6 6 6 6 6 6 6 6
VRATE KT-FT/1K..76 76 76 76 59 59 59 59
VENTRATE CAT....GD GD GD GD FR FR FR FR
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT). HAZE THROUGH THE
NIGHT.
CHANCE OF PCPN......10 PERCENT.
MIN TEMPERATURE.....AROUND 77.
MAX HUMIDITY........83 PERCENT.
MAX APPARENT TEMP...90.
SURFACE WINDS (MPH).EAST WINDS 16 TO 18 MPH WITH GUSTS TO AROUND 31
MPH.
WIND (20 FT)........EAST WINDS 16 TO 18 MPH WITH GUSTS TO AROUND 31
MPH.
MIXING HEIGHT.......1000 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 21 TO 25 MPH.
SMOKE DISPERSAL.....GOOD (31900 KNOT-FT).
DISPERSION..........6.
TIME (AST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........5 5 5 5 5 5 5 5 5 20 20 20
WEATHER COV.....DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF
WEATHER TYPE....HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 10 10 10
TEMP............84 83 82 81 80 79 78 78 77 77 77 79
RH..............67 70 72 74 75 76 79 80 83 83 82 77
APARNT TMP (F)..90 88 86 85 83 82 78 78 77 77 77 79
20 FT WIND DIR..SE E E E E E E E E E E E
20 FT WIND SPD..16 17 17 18 18 18 18 18 18 17 17 17
20 FT WIND GUST.26 28 30 30 31 31 31 31 31 30 29 29
SURFACE WND DIR.SE E E E E E E E E E E E
SURFACE WND SPD.16 17 17 18 18 18 18 18 18 17 17 17
SURFACE WND GST.26 28 30 30 31 31 31 31 31 30 29 29
MIX HGT (KFT)...2.8 2.3 2.0 1.8 1.8 1.8 1.8 1.7 1.7 1.3 1.0 1.0
TRANSP WIND DIR.SE SE SE SE SE E E E E E E E
TRANSP WIND SPD.22 23 24 25 25 25 25 25 24 23 21 21
DISPERSION......6 6 6 6 6 6 6 6 6 6 6 6
VRATE KT-FT/1K..59 59 39 39 39 39 39 39 32 32 32 32
VENTRATE CAT....FR FR PR PR PR PR PR PR PR PR PR PR
TUESDAY
SKY/WEATHER.........SUNNY (5-15 PERCENT). HAZE.
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 90.
MIN HUMIDITY........53 PERCENT.
MAX APPARENT TEMP...96.
SURFACE WINDS (MPH).SOUTHEAST WINDS 17 TO 22 MPH WITH GUSTS TO
AROUND 36 MPH.
WIND (20 FT)........SOUTHEAST WINDS 17 TO 22 MPH WITH GUSTS TO
AROUND 36 MPH.
MIXING HEIGHT.......4200 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 23 TO 29 MPH.
SMOKE DISPERSAL.....GOOD (31900 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (95100 KNOT-FT) IN THE
AFTERNOON.
DISPERSION..........6.
TIME (AST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........5 5 5 5 5 5 10 10 10 5 5 5
WEATHER COV.....DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF
WEATHER TYPE....HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ HAZ
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............81 83 85 86 88 89 89 90 90 89 88 86
RH..............71 67 63 60 58 56 55 54 53 54 55 59
APARNT TMP (F)..85 88 90 92 93 95 96 96 96 95 94 91
20 FT WIND DIR..E SE SE SE SE SE SE SE SE SE SE SE
20 FT WIND SPD..17 20 21 21 22 22 22 21 20 20 18 18
20 FT WIND GUST.30 32 33 35 36 36 36 35 33 32 31 31
SURFACE WND DIR.E SE SE SE SE SE SE SE SE SE SE SE
SURFACE WND SPD.17 20 21 21 22 22 22 21 20 20 18 18
SURFACE WND GST.30 32 33 35 36 36 36 35 33 32 31 31
MIX HGT (KFT)...1.8 2.9 3.8 4.1 4.2 4.1 3.9 3.8 3.6 3.6 3.6 3.5
TRANSP WIND DIR.SE SE SE SE SE SE SE SE SE SE E E
TRANSP WIND SPD.23 25 28 29 29 28 26 25 24 24 24 24
DISPERSION......6 6 6 6 6 6 6 6 6 6 6 6
VRATE KT-FT/1K..32 32 95 95 95 95 95 95 67 67 67 67
VENTRATE CAT....PR PR GD GD GD GD GD GD GD GD GD GD
FORECASTER...M. MARRERO
REQUESTED BY...JOSE M. MARTINEZ
TYPE OF REQUEST...OTHER
.TAG 2614744.0/SJU
.DELDT 06/01/26
.FORMATTERVERSION 2.0.0
.EMAIL JOSEMARTIN@DSP.PR.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page