958
FNCA52 TJSJ 080730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 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.
PRZ014-082000-
SOUTHEAST COASTAL PLAINS-
330 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)4720 5150
TRANSPORT WND (MPH) E 16 E 10
VENT RATE (KT-FT) 66080 46350
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-082000-
SOUTHERN HILLS-
330 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 5830
TRANSPORT WND (MPH) E 15 E 9
VENT RATE (KT-FT) 70460 46640
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-082000-
NORTH COASTAL PLAINS-
330 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)4740 4590
TRANSPORT WND (MPH) E 14 E 10
VENT RATE (KT-FT) 56880 41310
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-082000-
NORTHERN HILLS-
330 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)5980 5550
TRANSPORT WND (MPH) SE 12 E 7
VENT RATE (KT-FT) 59800 33300
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-082000-
WEST COAST-
330 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)4860 4690
TRANSPORT WND (MPH) SE 13 E 6
VENT RATE (KT-FT) 53460 23450
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-082000-
EASTERN INTERIOR-
330 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)5440 6470
TRANSPORT WND (MPH) SE 15 E 9
VENT RATE (KT-FT) 70720 51760
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-082000-
LUQUILLO MOUNTAIN RANGE-
330 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)3930 4410
TRANSPORT WND (MPH) SE 15 E 9
VENT RATE (KT-FT) 51090 35280
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-082000-
CENTRAL MOUNTAIN RANGE-
330 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)6330 6640
TRANSPORT WND (MPH) SE 12 E 6
VENT RATE (KT-FT) 63300 33200
DISPERSION 5 5
DSI 6 1 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-082000-
CAYEY MOUNTAIN RANGE-
330 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)4510 5060
TRANSPORT WND (MPH) E 14 E 9
VENT RATE (KT-FT) 54120 40480
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-082000-
VIEQUES-
330 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)3570 3330
TRANSPORT WND (MPH) E 16 E 13
VENT RATE (KT-FT) 49980 36630
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-082000-
CULEBRA-
330 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)3390 3220
TRANSPORT WND (MPH) E 16 E 13
VENT RATE (KT-FT) 47460 35420
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-082000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 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)4930 5180
TRANSPORT WND (MPH) E 20 E 10
VENT RATE (KT-FT) 83810 46620
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-082000-
SAINT THOMAS AND SAINT JOHN-
330 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)3390 3070
TRANSPORT WND (MPH) E 17 E 13
VENT RATE (KT-FT) 50850 33770
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-082000-
ST CROIX-
330 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)4350 4420
TRANSPORT WND (MPH) E 17 E 14
VENT RATE (KT-FT) 65250 53040
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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