304
FNCA52 TJSJ 040730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST SUN OCT 4 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-042000-
SOUTHEAST COASTAL PLAINS-
330 AM AST SUN OCT 4 2026
TODAY TONIGHT MON
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 40 20
TEMP (24H TREND) 91 (+1) 73 (-2) 92
RH % (24H TREND) 56 (+4) 96 (+7) 57
WIND 20FT/EARLY(MPH) E 13 NE 11 E 13
WIND 20FT/LATE(MPH) E 13 NE 8 SE 14
MIXING HGT(FT-AGL/MSL)5400 4800
TRANSPORT WND (MPH) E 9 E 12
VENT RATE (KT-FT) 43200 48000
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-042000-
SOUTHERN HILLS-
330 AM AST SUN OCT 4 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 40 50 40
TEMP (24H TREND) 89 (+4) 69 (-4) 90
RH % (24H TREND) 59 (-5) 100 (+7) 59
WIND 20FT/EARLY(MPH) E 9 E 10 E 10
WIND 20FT/LATE(MPH) SE 10 E 9 SE 11
MIXING HGT(FT-AGL/MSL)5790 5400
TRANSPORT WND (MPH) E 9 E 10
VENT RATE (KT-FT) 46320 48600
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-042000-
NORTH COASTAL PLAINS-
330 AM AST SUN OCT 4 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 60 60 40
TEMP (24H TREND) 91 (+1) 72 (-4) 92
RH % (24H TREND) 60 (-3) 99 (+6) 60
WIND 20FT/EARLY(MPH) E 10 E 12 E 10
WIND 20FT/LATE(MPH) E 14 SE 9 E 14
MIXING HGT(FT-AGL/MSL)5090 4630
TRANSPORT WND (MPH) E 10 E 9
VENT RATE (KT-FT) 45810 37040
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-042000-
NORTHERN HILLS-
330 AM AST SUN OCT 4 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 70 60
TEMP (24H TREND) 90 (+2) 70 (-3) 91
RH % (24H TREND) 61 (-2) 100 (+4) 62
WIND 20FT/EARLY(MPH) E 9 SE 10 E 8
WIND 20FT/LATE(MPH) E 12 LGT/VAR E 12
MIXING HGT(FT-AGL/MSL)5530 5220
TRANSPORT WND (MPH) E 8 SE 8
VENT RATE (KT-FT) 38710 36540
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-042000-
WEST COAST-
330 AM AST SUN OCT 4 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 60 60
TEMP (24H TREND) 93 (+2) 72 (-2) 94
RH % (24H TREND) 58 (-4) 99 (+5) 58
WIND 20FT/EARLY(MPH) E 8 E 9 E 9
WIND 20FT/LATE(MPH) E 8 E 8 E 10
MIXING HGT(FT-AGL/MSL)4820 4320
TRANSPORT WND (MPH) E 5 E 7
VENT RATE (KT-FT) 19280 25920
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-042000-
EASTERN INTERIOR-
330 AM AST SUN OCT 4 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 50 60 30
TEMP (24H TREND) 90 (+2) 71 (-4) 91
RH % (24H TREND) 58 (-3) 100 (+7) 59
WIND 20FT/EARLY(MPH) E 10 E 11 E 9
WIND 20FT/LATE(MPH) E 11 SE 10 E 11
MIXING HGT(FT-AGL/MSL)6050 6060
TRANSPORT WND (MPH) E 10 E 10
VENT RATE (KT-FT) 54450 54540
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-042000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST SUN OCT 4 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 60 60 40
TEMP (24H TREND) 86 (+3) 68 (-4) 87
RH % (24H TREND) 61 (-5) 100 (+3) 63
WIND 20FT/EARLY(MPH) E 9 E 8 E 8
WIND 20FT/LATE(MPH) E 10 E 8 E 10
MIXING HGT(FT-AGL/MSL)4950 4310
TRANSPORT WND (MPH) E 12 E 12
VENT RATE (KT-FT) 49500 43100
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-042000-
CENTRAL MOUNTAIN RANGE-
330 AM AST SUN OCT 4 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 70 70
TEMP (24H TREND) 87 (+5) 67 (-4) 89
RH % (24H TREND) 63 (-6) 100 (+5) 62
WIND 20FT/EARLY(MPH) E 6 E 6 E 6
WIND 20FT/LATE(MPH) E 6 LGT/VAR E 8
MIXING HGT(FT-AGL/MSL)6170 5830
TRANSPORT WND (MPH) E 7 SE 8
VENT RATE (KT-FT) 37020 40810
DISPERSION 5 5
DSI 6 1 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-042000-
CAYEY MOUNTAIN RANGE-
330 AM AST SUN OCT 4 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS
CHANCE PRECIP (%) 30 60 30
TEMP (24H TREND) 86 (+2) 68 (-4) 87
RH % (24H TREND) 60 (-4) 100 (+4) 61
WIND 20FT/EARLY(MPH) E 9 E 8 E 9
WIND 20FT/LATE(MPH) E 10 E 6 E 10
MIXING HGT(FT-AGL/MSL)5590 5170
TRANSPORT WND (MPH) E 10 E 12
VENT RATE (KT-FT) 50310 51700
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-042000-
VIEQUES-
330 AM AST SUN OCT 4 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 60 60 40
TEMP (24H TREND) 90 (+1) 76 (-1) 91
RH % (24H TREND) 55 (-4) 92 (+4) 58
WIND 20FT/EARLY(MPH) E 10 E 12 E 11
WIND 20FT/LATE(MPH) E 11 E 12 E 11
MIXING HGT(FT-AGL/MSL)3530 3310
TRANSPORT WND (MPH) E 10 E 12
VENT RATE (KT-FT) 31770 33100
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-042000-
CULEBRA-
330 AM AST SUN OCT 4 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 50 50 40
TEMP (24H TREND) 91 (+2) 77 (-2) 92
RH % (24H TREND) 54 (-8) 91 (+5) 56
WIND 20FT/EARLY(MPH) E 11 E 12 E 11
WIND 20FT/LATE(MPH) E 11 E 12 E 11
MIXING HGT(FT-AGL/MSL)3610 3290
TRANSPORT WND (MPH) E 12 E 13
VENT RATE (KT-FT) 36100 36190
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-042000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST SUN OCT 4 2026
TODAY TONIGHT MON
CLOUD COVER MCLEAR PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 30
TEMP (24H TREND) 94 (+3) 74 (-2) 94
RH % (24H TREND) 52 (0) 94 (+7) 53
WIND 20FT/EARLY(MPH) E 12 E 11 E 12
WIND 20FT/LATE(MPH) SE 12 E 12 SE 14
MIXING HGT(FT-AGL/MSL)5470 4570
TRANSPORT WND (MPH) E 7 SE 13
VENT RATE (KT-FT) 32820 50270
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-042000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST SUN OCT 4 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 50 20
TEMP (24H TREND) 89 (+2) 76 (-2) 89
RH % (24H TREND) 60 (-4) 92 (+5) 63
WIND 20FT/EARLY(MPH) E 11 E 13 E 11
WIND 20FT/LATE(MPH) E 12 E 13 E 11
MIXING HGT(FT-AGL/MSL)3560 3210
TRANSPORT WND (MPH) E 13 E 13
VENT RATE (KT-FT) 39160 35310
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-042000-
ST CROIX-
330 AM AST SUN OCT 4 2026
TODAY TONIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS
CHANCE PRECIP (%) 50 50 30
TEMP (24H TREND) 91 (+2) 75 (-2) 91
RH % (24H TREND) 61 (-3) 99 (+9) 62
WIND 20FT/EARLY(MPH) E 11 E 12 E 11
WIND 20FT/LATE(MPH) E 11 E 11 E 11
MIXING HGT(FT-AGL/MSL)4610 4710
TRANSPORT WND (MPH) E 14 E 14
VENT RATE (KT-FT) 55320 56520
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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