352
FNCA52 TJSJ 170730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST TUE MAR 17 2026
DISCUSSION
A FIRE DANGER STATEMENT WILL BE ISSUED ONCE AGAIN FOR THE COASTAL
PLAINS OF SOUTHERN PUERTO RICO. THE KBDI IN CABO ROJO WAS AT
687 AND 552 IN GUANICA. SOUTHEAST WINDS SHOULD PREVAIL BETWEEN
14 AND 22 MPH WITH GUSTS CLOSE TO 30 MPH. PASSING LIGHT SHOWERS
ARE EXPECTED EARLY THIS MORNING, BUT DRIER AIR IS EXPECTED
THROUGHOUT THE DAY, DROPPING RELATIVE HUMIDITIES BETWEEN 45-55%
ALONG THE SOUTH COAST OF PR. THEREFORE, THE FIRE DANGER IS
ELEVATED TODAY ACROSS SOUTHERN PR.
PRZ014-172000-
SOUTHEAST COASTAL PLAINS-
330 AM AST TUE MAR 17 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 20
TEMP (24H TREND) 87 (+2) 69 (-2) 87
RH % (24H TREND) 42 (-12) 88 (+6) 42
WIND 20FT/EARLY(MPH) E 19 E 13 E 16
WIND 20FT/LATE(MPH) E 19 E 13 E 18
MIXING HGT(FT-AGL/MSL)6000 6130
TRANSPORT WND (MPH) E 22 E 20
VENT RATE (KT-FT) 114000 104210
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-172000-
SOUTHERN HILLS-
330 AM AST TUE MAR 17 2026
TODAY TONIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 20
TEMP (24H TREND) 83 (+3) 65 (-3) 83
RH % (24H TREND) 54 (-7) 96 (+10) 55
WIND 20FT/EARLY(MPH) E 18 E 12 E 14
WIND 20FT/LATE(MPH) E 16 E 13 E 13
MIXING HGT(FT-AGL/MSL)6920 6640
TRANSPORT WND (MPH) E 21 E 18
VENT RATE (KT-FT) 124560 106240
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-172000-
NORTH COASTAL PLAINS-
330 AM AST TUE MAR 17 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 30 40
TEMP (24H TREND) 87 (+1) 68 (-2) 87
RH % (24H TREND) 53 (-4) 96 (+8) 54
WIND 20FT/EARLY(MPH) E 16 E 17 E 16
WIND 20FT/LATE(MPH) E 20 E 13 E 19
MIXING HGT(FT-AGL/MSL)6130 5860
TRANSPORT WND (MPH) E 22 E 20
VENT RATE (KT-FT) 116470 99620
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-172000-
NORTHERN HILLS-
330 AM AST TUE MAR 17 2026
TODAY TONIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 20
TEMP (24H TREND) 86 (+1) 66 (-2) 86
RH % (24H TREND) 50 (-4) 95 (+7) 53
WIND 20FT/EARLY(MPH) E 14 E 14 E 13
WIND 20FT/LATE(MPH) E 18 E 10 E 17
MIXING HGT(FT-AGL/MSL)7670 6910
TRANSPORT WND (MPH) E 18 E 15
VENT RATE (KT-FT) 122720 89830
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-172000-
WEST COAST-
330 AM AST TUE MAR 17 2026
TODAY TONIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 20 0 50
TEMP (24H TREND) 88 (+1) 67 (-1) 87
RH % (24H TREND) 51 (-5) 92 (+6) 54
WIND 20FT/EARLY(MPH) E 17 E 16 E 14
WIND 20FT/LATE(MPH) SE 17 E 11 SE 14
MIXING HGT(FT-AGL/MSL)6190 5710
TRANSPORT WND (MPH) E 15 E 13
VENT RATE (KT-FT) 80470 62810
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-172000-
EASTERN INTERIOR-
330 AM AST TUE MAR 17 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 40 50
TEMP (24H TREND) 84 (+3) 66 (-3) 84
RH % (24H TREND) 57 (-4) 96 (+6) 57
WIND 20FT/EARLY(MPH) E 18 E 14 E 16
WIND 20FT/LATE(MPH) E 16 E 16 E 14
MIXING HGT(FT-AGL/MSL)6560 6730
TRANSPORT WND (MPH) E 22 E 18
VENT RATE (KT-FT) 124640 107680
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-172000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST TUE MAR 17 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 50 50
TEMP (24H TREND) 79 (+2) 64 (-4) 79
RH % (24H TREND) 64 (-3) 98 (+6) 64
WIND 20FT/EARLY(MPH) E 16 E 12 E 13
WIND 20FT/LATE(MPH) E 14 E 12 E 13
MIXING HGT(FT-AGL/MSL)5370 5080
TRANSPORT WND (MPH) E 22 E 18
VENT RATE (KT-FT) 102030 81280
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-172000-
CENTRAL MOUNTAIN RANGE-
330 AM AST TUE MAR 17 2026
TODAY TONIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 0 20
TEMP (24H TREND) 84 (+4) 63 (-3) 84
RH % (24H TREND) 52 (-6) 97 (+8) 55
WIND 20FT/EARLY(MPH) E 12 E 9 E 10
WIND 20FT/LATE(MPH) SE 12 E 9 E 11
MIXING HGT(FT-AGL/MSL)8370 8090
TRANSPORT WND (MPH) E 15 E 12
VENT RATE (KT-FT) 108810 80900
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-172000-
CAYEY MOUNTAIN RANGE-
330 AM AST TUE MAR 17 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 50 50
TEMP (24H TREND) 79 (+2) 65 (-2) 79
RH % (24H TREND) 63 (-5) 99 (+5) 64
WIND 20FT/EARLY(MPH) E 16 E 10 E 12
WIND 20FT/LATE(MPH) E 13 E 11 E 12
MIXING HGT(FT-AGL/MSL)5950 5810
TRANSPORT WND (MPH) E 22 E 21
VENT RATE (KT-FT) 113050 104580
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-172000-
VIEQUES-
330 AM AST TUE MAR 17 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 50 50
TEMP (24H TREND) 85 (0) 71 (-2) 85
RH % (24H TREND) 56 (0) 87 (+4) 55
WIND 20FT/EARLY(MPH) E 21 G29 E 19 E 18
WIND 20FT/LATE(MPH) E 18 E 19 E 17
MIXING HGT(FT-AGL/MSL)4300 3860
TRANSPORT WND (MPH) E 28 E 24
VENT RATE (KT-FT) 103200 81060
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-172000-
CULEBRA-
330 AM AST TUE MAR 17 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 50 40
TEMP (24H TREND) 85 (0) 72 (-2) 85
RH % (24H TREND) 58 (0) 88 (+4) 57
WIND 20FT/EARLY(MPH) E 21 G29 E 19 E 17
WIND 20FT/LATE(MPH) E 18 E 19 E 17
MIXING HGT(FT-AGL/MSL)4320 3920
TRANSPORT WND (MPH) E 28 E 20
VENT RATE (KT-FT) 103680 66640
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-172000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST TUE MAR 17 2026
TODAY TONIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 0 10 0
TEMP (24H TREND) 88 (+2) 69 (-2) 88
RH % (24H TREND) 42 (-12) 86 (+7) 46
WIND 20FT/EARLY(MPH) E 24 E 23 E 20
WIND 20FT/LATE(MPH) E 24 G32 E 17 SE 21
MIXING HGT(FT-AGL/MSL)6130 5900
TRANSPORT WND (MPH) E 24 E 18
VENT RATE (KT-FT) 128730 94400
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-172000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST TUE MAR 17 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 40
TEMP (24H TREND) 85 (+1) 72 (-3) 85
RH % (24H TREND) 57 (-1) 89 (+8) 55
WIND 20FT/EARLY(MPH) E 21 G29 E 19 E 18
WIND 20FT/LATE(MPH) E 18 G25 E 19 E 17
MIXING HGT(FT-AGL/MSL)4340 3820
TRANSPORT WND (MPH) E 29 E 21
VENT RATE (KT-FT) 108500 68760
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-172000-
ST CROIX-
330 AM AST TUE MAR 17 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 20
TEMP (24H TREND) 86 (+2) 71 (-3) 86
RH % (24H TREND) 58 (-1) 88 (+5) 56
WIND 20FT/EARLY(MPH) E 20 E 18 E 17
WIND 20FT/LATE(MPH) E 18 E 18 E 17
MIXING HGT(FT-AGL/MSL)5080 4800
TRANSPORT WND (MPH) E 24 E 23
VENT RATE (KT-FT) 106680 96000
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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