758
FNCA52 TJSJ 080545
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
145 AM AST MON JUN 8 2026
DISCUSSION
EXPECT AN ELEVATED FIRE DANGER ACROSS THE SOUTHERN COASTAL PLAINS
OF PUERTO RICO. FROM LATE THIS MORNING THROUGH LATE THIS
AFTERNOON, RELATIVE HUMIDITY IS EXPECTED TO DROP TO NEAR 50% OR
EVEN LOWER, WHILE WIND SPEEDS ARE EXPECTED TO RANGE BETWEEN 13
AND 20 MPH, WITH STRONGER GUSTS. FINE FUELS WILL CONTINUE TO DRY
OUT AND REMAIN HIGHLY RECEPTIVE TO IGNITION.
FIRE AND EMERGENCY OFFICIALS SHOULD BE AWARE THAT WEATHER
CONDITIONS ARE BECOMING MORE CONDUCIVE FOR THE IGNITION AND SPREAD
OF WILDFIRES.
FIRE DANGER STATEMENTS ARE ISSUED WHEN FIRE WEATHER CONDITIONS
ARE APPROACHING, BUT NOT MEETING OR EXCEEDING, RED FLAG WARNING
CRITERIA.
PRZ014-082015-
SOUTHEAST COASTAL PLAINS-
145 AM AST MON JUN 8 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR CLEAR
PRECIP TYPE SHOWERS SHOWERS NONE
CHANCE PRECIP (%) 10 10 0
TEMP (24H TREND) 91 (+3) 72 (-3) 91
RH % (24H TREND) 51 (-6) 85 (-4) 48
WIND 20FT/EARLY(MPH) E 16 E 12 E 12
WIND 20FT/LATE(MPH) SE 17 NE 9 SE 19
MIXING HGT(FT-AGL/MSL)4790 5130
TRANSPORT WND (MPH) E 16 E 10
VENT RATE (KT-FT) 67060 46170
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-082015-
SOUTHERN HILLS-
145 AM AST MON JUN 8 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 10
TEMP (24H TREND) 88 (+5) 69 (-3) 88
RH % (24H TREND) 59 (-12) 96 (+1) 56
WIND 20FT/EARLY(MPH) E 13 E 10 E 10
WIND 20FT/LATE(MPH) SE 12 E 8 SE 13
MIXING HGT(FT-AGL/MSL)5420 5710
TRANSPORT WND (MPH) E 15 E 9
VENT RATE (KT-FT) 70460 45680
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-082015-
NORTH COASTAL PLAINS-
145 AM AST MON JUN 8 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 10 10
TEMP (24H TREND) 91 (+2) 72 (-3) 90
RH % (24H TREND) 58 (-8) 96 (+1) 54
WIND 20FT/EARLY(MPH) E 14 E 12 E 11
WIND 20FT/LATE(MPH) E 18 SE 9 E 17
MIXING HGT(FT-AGL/MSL)4850 4750
TRANSPORT WND (MPH) E 15 E 9
VENT RATE (KT-FT) 63050 38000
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-082015-
NORTHERN HILLS-
145 AM AST MON JUN 8 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 10 20
TEMP (24H TREND) 90 (+3) 69 (-3) 89
RH % (24H TREND) 59 (-9) 98 (+1) 57
WIND 20FT/EARLY(MPH) E 12 SE 11 E 10
WIND 20FT/LATE(MPH) E 14 SE 8 NE 13
MIXING HGT(FT-AGL/MSL)5780 5800
TRANSPORT WND (MPH) E 13 E 7
VENT RATE (KT-FT) 63580 34800
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-082015-
WEST COAST-
145 AM AST MON JUN 8 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 10 40
TEMP (24H TREND) 92 (+2) 72 (-2) 91
RH % (24H TREND) 60 (-7) 95 (+1) 57
WIND 20FT/EARLY(MPH) E 13 SE 12 E 10
WIND 20FT/LATE(MPH) SE 14 E 12 E 11
MIXING HGT(FT-AGL/MSL)4890 4610
TRANSPORT WND (MPH) SE 14 SE 6
VENT RATE (KT-FT) 58680 23050
DISPERSION 5 5
DSI 6 4 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-082015-
EASTERN INTERIOR-
145 AM AST MON JUN 8 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 10 10
TEMP (24H TREND) 89 (+3) 70 (-4) 89
RH % (24H TREND) 59 (-9) 97 (+1) 56
WIND 20FT/EARLY(MPH) E 14 E 11 E 10
WIND 20FT/LATE(MPH) SE 13 E 10 E 11
MIXING HGT(FT-AGL/MSL)5690 6270
TRANSPORT WND (MPH) E 15 E 9
VENT RATE (KT-FT) 73970 50160
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-082015-
LUQUILLO MOUNTAIN RANGE-
145 AM AST MON JUN 8 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 20 10
TEMP (24H TREND) 83 (+3) 69 (-3) 83
RH % (24H TREND) 67 (-10) 98 (0) 62
WIND 20FT/EARLY(MPH) E 12 E 10 E 9
WIND 20FT/LATE(MPH) E 12 E 8 SE 9
MIXING HGT(FT-AGL/MSL)4540 4440
TRANSPORT WND (MPH) E 15 E 10
VENT RATE (KT-FT) 59020 39960
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-082015-
CENTRAL MOUNTAIN RANGE-
145 AM AST MON JUN 8 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 10 40
TEMP (24H TREND) 87 (+5) 67 (-3) 87
RH % (24H TREND) 61 (-13) 97 (+1) 59
WIND 20FT/EARLY(MPH) E 9 SE 8 E 6
WIND 20FT/LATE(MPH) SE 10 E 8 E 8
MIXING HGT(FT-AGL/MSL)6510 6690
TRANSPORT WND (MPH) E 9 E 6
VENT RATE (KT-FT) 52080 33450
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-082015-
CAYEY MOUNTAIN RANGE-
145 AM AST MON JUN 8 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 20 10
TEMP (24H TREND) 84 (+3) 69 (-3) 84
RH % (24H TREND) 66 (-10) 99 (0) 61
WIND 20FT/EARLY(MPH) E 12 E 9 E 9
WIND 20FT/LATE(MPH) E 11 E 6 SE 11
MIXING HGT(FT-AGL/MSL)4740 5160
TRANSPORT WND (MPH) E 15 E 12
VENT RATE (KT-FT) 61620 51600
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-082015-
VIEQUES-
145 AM AST MON JUN 8 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 20
TEMP (24H TREND) 88 (+1) 75 (-2) 87
RH % (24H TREND) 60 (-5) 88 (-2) 58
WIND 20FT/EARLY(MPH) E 18 E 12 E 12
WIND 20FT/LATE(MPH) E 14 E 12 E 10
MIXING HGT(FT-AGL/MSL)3470 3120
TRANSPORT WND (MPH) E 17 E 12
VENT RATE (KT-FT) 52050 31200
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-082015-
CULEBRA-
145 AM AST MON JUN 8 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 20
TEMP (24H TREND) 90 (+2) 76 (-3) 89
RH % (24H TREND) 58 (-8) 88 (0) 55
WIND 20FT/EARLY(MPH) E 18 E 12 E 12
WIND 20FT/LATE(MPH) E 14 E 12 E 11
MIXING HGT(FT-AGL/MSL)3420 3000
TRANSPORT WND (MPH) E 17 E 13
VENT RATE (KT-FT) 51300 33000
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-082015-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
145 AM AST MON JUN 8 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 20 0 10
TEMP (24H TREND) 92 (+3) 74 (-2) 92
RH % (24H TREND) 50 (-8) 86 (-2) 47
WIND 20FT/EARLY(MPH) E 18 E 16 E 14
WIND 20FT/LATE(MPH) SE 20 E 16 SE 16
MIXING HGT(FT-AGL/MSL)4750 4800
TRANSPORT WND (MPH) E 20 SE 12
VENT RATE (KT-FT) 80750 48000
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-082015-
SAINT THOMAS AND SAINT JOHN-
145 AM AST MON JUN 8 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 10
TEMP (24H TREND) 86 (+1) 75 (-4) 86
RH % (24H TREND) 63 (-6) 87 (-1) 59
WIND 20FT/EARLY(MPH) E 18 E 13 E 12
WIND 20FT/LATE(MPH) E 14 E 13 E 11
MIXING HGT(FT-AGL/MSL)3400 3020
TRANSPORT WND (MPH) E 18 E 14
VENT RATE (KT-FT) 54400 36240
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-082015-
ST CROIX-
145 AM AST MON JUN 8 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 10
TEMP (24H TREND) 87 (+1) 76 (-2) 87
RH % (24H TREND) 62 (-6) 86 (-3) 60
WIND 20FT/EARLY(MPH) E 17 E 12 E 13
WIND 20FT/LATE(MPH) E 14 E 12 E 11
MIXING HGT(FT-AGL/MSL)4510 4780
TRANSPORT WND (MPH) E 18 E 14
VENT RATE (KT-FT) 72160 57360
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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