587
FNCA52 TJSJ 050823
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
423 AM AST WED NOV 5 2025
DISCUSSION
EASTERLY WINDS WILL REMAIN BELOW THRESHOLD VALUES, WHILE MINIMUM
RH VALUES WILL REMAIN GENERALLY ABOVE CRITICAL VALUES. EXPECT
PASSING SHOWERS DURING THE MORNING AND LOCALLY INDUCED AFTERNOON
SHOWERS ACROSS WESTERN PUERTO RICO. GIVEN THE EXPECTED CONDITIONS,
THE FIRE DANGER THREAT SHOULD CONTINUE LOW FOR TODAY.
PRZ014-060830-
SOUTHEAST COASTAL PLAINS-
423 AM AST WED NOV 5 2025
TODAY TONIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE NONE SHOWERS NONE
CHANCE PRECIP (%) 0 10 0
TEMP (24H TREND) 87 (-1) 72 (-1) 88
RH % (24H TREND) 64 (+4) 93 (+1) 61
WIND 20FT/EARLY(MPH) SE 12 E 11 SE 12 G17
WIND 20FT/LATE(MPH) SE 12 E 11 SE 12 G17
MIXING HGT(FT-AGL/MSL)4550 4350
TRANSPORT WND (MPH) E 8 E 12
VENT RATE (KT-FT) 31850 43500
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-060830-
SOUTHERN HILLS-
423 AM AST WED NOV 5 2025
TODAY TONIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 10
TEMP (24H TREND) 84 (+1) 68 (-3) 85
RH % (24H TREND) 66 (-3) 98 (+4) 65
WIND 20FT/EARLY(MPH) SE 9 E 10 SE 11
WIND 20FT/LATE(MPH) SE 9 E 10 SE 11
MIXING HGT(FT-AGL/MSL)5340 4880
TRANSPORT WND (MPH) E 8 E 13
VENT RATE (KT-FT) 37380 53680
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-060830-
NORTH COASTAL PLAINS-
423 AM AST WED NOV 5 2025
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 10 20
TEMP (24H TREND) 87 (-1) 72 (-3) 88
RH % (24H TREND) 66 (-1) 97 (+4) 62
WIND 20FT/EARLY(MPH) E 14 E 12 E 13
WIND 20FT/LATE(MPH) E 14 E 12 E 13
MIXING HGT(FT-AGL/MSL)4550 4390
TRANSPORT WND (MPH) E 10 E 12
VENT RATE (KT-FT) 40950 43900
DISPERSION 5 5
DSI 5 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-060830-
NORTHERN HILLS-
423 AM AST WED NOV 5 2025
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 70 0 20
TEMP (24H TREND) 85 (-2) 69 (-3) 87
RH % (24H TREND) 68 (+2) 99 (+4) 63
WIND 20FT/EARLY(MPH) E 11 E 10 E 10
WIND 20FT/LATE(MPH) E 11 E 10 E 10
MIXING HGT(FT-AGL/MSL)5450 4970
TRANSPORT WND (MPH) E 8 E 10
VENT RATE (KT-FT) 38150 44730
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-060830-
WEST COAST-
423 AM AST WED NOV 5 2025
TODAY TONIGHT THU
CLOUD COVER PCLDY CLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 50 0 10
TEMP (24H TREND) 87 (-1) 71 (-1) 88
RH % (24H TREND) 66 (-4) 99 (+3) 65
WIND 20FT/EARLY(MPH) E 8 E 5 E 11
WIND 20FT/LATE(MPH) E 8 E 5 E 11
MIXING HGT(FT-AGL/MSL)4410 4250
TRANSPORT WND (MPH) SE 7 SE 9
VENT RATE (KT-FT) 26460 34000
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-060830-
EASTERN INTERIOR-
423 AM AST WED NOV 5 2025
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 20 20
TEMP (24H TREND) 86 (0) 69 (-3) 87
RH % (24H TREND) 66 (0) 100 (+3) 64
WIND 20FT/EARLY(MPH) E 10 E 12 E 10
WIND 20FT/LATE(MPH) E 10 E 12 E 10
MIXING HGT(FT-AGL/MSL)5720 4950
TRANSPORT WND (MPH) E 9 E 12
VENT RATE (KT-FT) 45760 49500
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-060830-
LUQUILLO MOUNTAIN RANGE-
423 AM AST WED NOV 5 2025
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 50 20
TEMP (24H TREND) 82 (+2) 68 (-2) 82
RH % (24H TREND) 72 (-1) 100 (0) 72
WIND 20FT/EARLY(MPH) E 8 E 9 E 9
WIND 20FT/LATE(MPH) E 8 E 9 E 9
MIXING HGT(FT-AGL/MSL)4090 3750
TRANSPORT WND (MPH) E 10 E 12
VENT RATE (KT-FT) 36810 37500
DISPERSION 5 5
DSI 5 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-060830-
CENTRAL MOUNTAIN RANGE-
423 AM AST WED NOV 5 2025
TODAY TONIGHT THU
CLOUD COVER PCLDY CLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 70 0 30
TEMP (24H TREND) 83 (+2) 66 (-3) 85
RH % (24H TREND) 69 (-3) 99 (+4) 65
WIND 20FT/EARLY(MPH) SE 6 E 5 E 8
WIND 20FT/LATE(MPH) SE 6 E 5 E 8
MIXING HGT(FT-AGL/MSL)6710 5560
TRANSPORT WND (MPH) SE 6 E 8
VENT RATE (KT-FT) 33550 38920
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-060830-
CAYEY MOUNTAIN RANGE-
423 AM AST WED NOV 5 2025
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 20 10
TEMP (24H TREND) 82 (+1) 68 (-2) 82
RH % (24H TREND) 70 (0) 100 (+1) 70
WIND 20FT/EARLY(MPH) E 8 E 8 E 9
WIND 20FT/LATE(MPH) E 8 E 8 E 9
MIXING HGT(FT-AGL/MSL)4590 4190
TRANSPORT WND (MPH) E 9 E 12
VENT RATE (KT-FT) 36720 41900
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-060830-
VIEQUES-
423 AM AST WED NOV 5 2025
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 50 20
TEMP (24H TREND) 87 (-1) 75 (+1) 87
RH % (24H TREND) 65 (+4) 94 (-4) 64
WIND 20FT/EARLY(MPH) E 11 E 14 G18 E 12
WIND 20FT/LATE(MPH) E 11 E 14 G18 E 12
MIXING HGT(FT-AGL/MSL)3200 3410
TRANSPORT WND (MPH) E 13 E 16
VENT RATE (KT-FT) 35200 47740
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-060830-
CULEBRA-
423 AM AST WED NOV 5 2025
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 50 20
TEMP (24H TREND) 88 (0) 75 (0) 89
RH % (24H TREND) 61 (-3) 96 (-1) 62
WIND 20FT/EARLY(MPH) E 11 E 14 G18 E 12
WIND 20FT/LATE(MPH) E 11 E 14 G18 E 12
MIXING HGT(FT-AGL/MSL)3180 3340
TRANSPORT WND (MPH) E 10 E 16
VENT RATE (KT-FT) 28620 46760
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-060830-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
423 AM AST WED NOV 5 2025
TODAY TONIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
TEMP (24H TREND) 89 (+1) 73 (0) 90
RH % (24H TREND) 61 (+3) 95 (+4) 61
WIND 20FT/EARLY(MPH) SE 11 E 9 SE 16 G21
WIND 20FT/LATE(MPH) SE 11 E 9 SE 16 G21
MIXING HGT(FT-AGL/MSL)4510 4730
TRANSPORT WND (MPH) SE 9 E 15
VENT RATE (KT-FT) 36080 61490
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-060830-
SAINT THOMAS AND SAINT JOHN-
423 AM AST WED NOV 5 2025
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 50 20
TEMP (24H TREND) 85 (0) 74 (-1) 85
RH % (24H TREND) 69 (+1) 97 (+1) 67
WIND 20FT/EARLY(MPH) E 11 E 14 G19 E 12
WIND 20FT/LATE(MPH) E 11 E 14 G19 E 12
MIXING HGT(FT-AGL/MSL)3500 3440
TRANSPORT WND (MPH) E 14 E 17
VENT RATE (KT-FT) 42000 51600
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-060830-
ST CROIX-
423 AM AST WED NOV 5 2025
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 50 10
TEMP (24H TREND) 89 (+2) 74 (-1) 86
RH % (24H TREND) 62 (-2) 96 (0) 66
WIND 20FT/EARLY(MPH) E 12 E 14 G18 E 12
WIND 20FT/LATE(MPH) E 12 E 14 G18 E 12
MIXING HGT(FT-AGL/MSL)4070 4100
TRANSPORT WND (MPH) E 15 E 15
VENT RATE (KT-FT) 52910 53300
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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