601
FNCA52 TJSJ 190650
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
250 AM AST TUE AUG 19 2025
DISCUSSION
SOUTHERLY WINDS WILL CONTINUE TO BRING SHOWERS INTO THE REGION,
WITH RELATIVE HUMIDITIES IN THE UPPER 50S AND MID-60S. WINDS WILL
BE MOSTLY BELOW 15 MPH. THEREFORE, THE RISK OF FIRE DANGER IS LOW.
PRZ014-200700-
SOUTHEAST COASTAL PLAINS-
250 AM AST TUE AUG 19 2025
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 30
TEMP (24H TREND) 90 (+3) 76 (-1) 92
RH % (24H TREND) 65 (-11) 94 (-1) 63
WIND 20FT/EARLY(MPH) SE 11 E 9 SE 14 G19
WIND 20FT/LATE(MPH) SE 11 E 9 SE 14 G19
MIXING HGT(FT-AGL/MSL)4020 4080
TRANSPORT WND (MPH) SE 13 SE 17
VENT RATE (KT-FT) 44220 61200
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-200700-
SOUTHERN HILLS-
250 AM AST TUE AUG 19 2025
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 20
TEMP (24H TREND) 86 (+4) 73 (-2) 88
RH % (24H TREND) 67 (-13) 98 (+1) 65
WIND 20FT/EARLY(MPH) SE 12 E 9 SE 12
WIND 20FT/LATE(MPH) SE 12 E 9 SE 12
MIXING HGT(FT-AGL/MSL)4460 4800
TRANSPORT WND (MPH) SE 13 SE 18
VENT RATE (KT-FT) 49060 76800
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-200700-
NORTH COASTAL PLAINS-
250 AM AST TUE AUG 19 2025
TODAY TONIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 10
TEMP (24H TREND) 92 (+4) 76 (-1) 93
RH % (24H TREND) 61 (-11) 97 (0) 61
WIND 20FT/EARLY(MPH) SE 13 SE 10 E 16 G18
WIND 20FT/LATE(MPH) SE 13 SE 10 E 16 G18
MIXING HGT(FT-AGL/MSL)5210 5430
TRANSPORT WND (MPH) SE 13 SE 15
VENT RATE (KT-FT) 57310 70590
DISPERSION 5 5
DSI 6 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-200700-
NORTHERN HILLS-
250 AM AST TUE AUG 19 2025
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 40 0 20
TEMP (24H TREND) 91 (+5) 73 (-1) 92
RH % (24H TREND) 60 (-13) 99 (0) 59
WIND 20FT/EARLY(MPH) SE 10 SE 9 E 13
WIND 20FT/LATE(MPH) SE 10 SE 9 E 13
MIXING HGT(FT-AGL/MSL)5340 5870
TRANSPORT WND (MPH) SE 9 SE 14
VENT RATE (KT-FT) 42720 70440
DISPERSION 5 5
DSI 6 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-200700-
WEST COAST-
250 AM AST TUE AUG 19 2025
TODAY TONIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 10
TEMP (24H TREND) 91 (+5) 75 (-1) 93
RH % (24H TREND) 63 (-17) 97 (-1) 61
WIND 20FT/EARLY(MPH) SE 16 SE 12 E 14 G17
WIND 20FT/LATE(MPH) SE 16 SE 12 E 14 G17
MIXING HGT(FT-AGL/MSL)3800 4650
TRANSPORT WND (MPH) SE 18 SE 18
VENT RATE (KT-FT) 60800 74400
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-200700-
EASTERN INTERIOR-
250 AM AST TUE AUG 19 2025
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 40
TEMP (24H TREND) 90 (+4) 75 (-1) 90
RH % (24H TREND) 64 (-11) 98 (0) 65
WIND 20FT/EARLY(MPH) SE 13 SE 11 SE 14
WIND 20FT/LATE(MPH) SE 13 SE 11 SE 14
MIXING HGT(FT-AGL/MSL)5010 5190
TRANSPORT WND (MPH) SE 14 SE 17
VENT RATE (KT-FT) 60120 77850
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-200700-
LUQUILLO MOUNTAIN RANGE-
250 AM AST TUE AUG 19 2025
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 40
TEMP (24H TREND) 85 (+4) 71 (-2) 85
RH % (24H TREND) 71 (-10) 100 (0) 73
WIND 20FT/EARLY(MPH) SE 11 SE 9 SE 13
WIND 20FT/LATE(MPH) SE 11 SE 9 SE 13
MIXING HGT(FT-AGL/MSL)3580 3630
TRANSPORT WND (MPH) SE 15 SE 18
VENT RATE (KT-FT) 46540 58080
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-200700-
CENTRAL MOUNTAIN RANGE-
250 AM AST TUE AUG 19 2025
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 10
TEMP (24H TREND) 87 (+7) 70 (-3) 89
RH % (24H TREND) 65 (-16) 98 (-1) 62
WIND 20FT/EARLY(MPH) SE 12 SE 8 SE 11
WIND 20FT/LATE(MPH) SE 12 SE 8 SE 11
MIXING HGT(FT-AGL/MSL)4790 5500
TRANSPORT WND (MPH) SE 13 SE 17
VENT RATE (KT-FT) 52690 82500
DISPERSION 5 5
DSI 6 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-200700-
CAYEY MOUNTAIN RANGE-
250 AM AST TUE AUG 19 2025
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 40
TEMP (24H TREND) 85 (+4) 73 (0) 84
RH % (24H TREND) 71 (-10) 100 (0) 71
WIND 20FT/EARLY(MPH) SE 9 SE 8 SE 11
WIND 20FT/LATE(MPH) SE 9 SE 8 SE 11
MIXING HGT(FT-AGL/MSL)4200 4210
TRANSPORT WND (MPH) SE 14 SE 17
VENT RATE (KT-FT) 50400 63150
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-200700-
VIEQUES-
250 AM AST TUE AUG 19 2025
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 50
TEMP (24H TREND) 90 (+1) 78 (0) 91
RH % (24H TREND) 60 (-7) 96 (+2) 61
WIND 20FT/EARLY(MPH) SE 13 SE 12 E 16 G20
WIND 20FT/LATE(MPH) SE 13 SE 12 E 16 G20
MIXING HGT(FT-AGL/MSL)3240 2830
TRANSPORT WND (MPH) SE 14 E 20
VENT RATE (KT-FT) 38880 48110
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-200700-
CULEBRA-
250 AM AST TUE AUG 19 2025
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 50
TEMP (24H TREND) 92 (+4) 79 (-1) 92
RH % (24H TREND) 59 (-14) 97 (+3) 62
WIND 20FT/EARLY(MPH) SE 13 G17 SE 13 G17 E 17 G21
WIND 20FT/LATE(MPH) SE 13 G17 SE 13 G17 E 17 G21
MIXING HGT(FT-AGL/MSL)3060 2860
TRANSPORT WND (MPH) SE 16 SE 21
VENT RATE (KT-FT) 42840 51480
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-200700-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
250 AM AST TUE AUG 19 2025
TODAY TONIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 10
TEMP (24H TREND) 91 (+5) 77 (-1) 93
RH % (24H TREND) 62 (-12) 90 (-2) 58
WIND 20FT/EARLY(MPH) SE 18 G23 E 16 G19 SE 18 G23
WIND 20FT/LATE(MPH) SE 18 G23 E 16 G19 SE 18 G23
MIXING HGT(FT-AGL/MSL)4040 4300
TRANSPORT WND (MPH) SE 18 SE 20
VENT RATE (KT-FT) 64640 73100
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-200700-
SAINT THOMAS AND SAINT JOHN-
250 AM AST TUE AUG 19 2025
TODAY TONIGHT WED
CLOUD COVER MCLEAR PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 30
TEMP (24H TREND) 89 (+3) 77 (-3) 89
RH % (24H TREND) 65 (-8) 98 (+4) 67
WIND 20FT/EARLY(MPH) SE 13 G17 SE 13 G17 E 17 G22
WIND 20FT/LATE(MPH) SE 13 G17 SE 13 G17 E 17 G22
MIXING HGT(FT-AGL/MSL)3020 3190
TRANSPORT WND (MPH) SE 17 E 18
VENT RATE (KT-FT) 45300 51040
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-200700-
ST CROIX-
250 AM AST TUE AUG 19 2025
TODAY TONIGHT WED
CLOUD COVER MCLEAR PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 30
TEMP (24H TREND) 90 (+2) 78 (-2) 90
RH % (24H TREND) 64 (-8) 96 (+4) 65
WIND 20FT/EARLY(MPH) SE 13 G17 E 11 E 17 G21
WIND 20FT/LATE(MPH) SE 13 G17 E 11 E 17 G21
MIXING HGT(FT-AGL/MSL)4030 3900
TRANSPORT WND (MPH) SE 17 E 21
VENT RATE (KT-FT) 60450 70200
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page