Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
103
FNCA52 TJSJ 010923
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
523 AM AST Sat Nov 1 2025
.DISCUSSION...
A tropical wave moving across the region today will lead to
heavy showers and thunderstorms. winds will be breezy, but
minimum relative humidity values will remain above the fire
critical thresholds. Given the expected weather conditions, the
fire danger threat should remain low for today.
PRZ014-020930-
Southeast Coastal Plains-
523 AM AST Sat Nov 1 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Mclear
Precip Type Tstms Tstms Showers
Chance Precip (%) 70 40 30
Temp (24h trend) 87 (-1) 74 (-1) 90
RH % (24h trend) 69 (+2) 96 (+2) 58
Wind 20ft/early(mph) E 21 G29 E 14 G18 E 16 G20
Wind 20ft/late(mph) E 21 G29 E 14 G18 E 16 G20
Mixing Hgt(ft-agl/msl)3330 4570
Transport Wnd (mph) SE 22 E 18
Vent Rate (kt-ft) 63270 73120
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ015-020930-
Southern Hills-
523 AM AST Sat Nov 1 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Mclear
Precip Type Tstms Showers Showers
Chance Precip (%) 60 40 10
Temp (24h trend) 84 (0) 70 (-3) 87
RH % (24h trend) 72 (+2) 99 (+4) 60
Wind 20ft/early(mph) E 16 E 14 E 13
Wind 20ft/late(mph) E 16 E 14 E 13
Mixing Hgt(ft-agl/msl)4000 5110
Transport Wnd (mph) SE 22 E 17
Vent Rate (kt-ft) 76000 76650
Dispersion 5 5
DSI 5 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ016-020930-
North Coastal Plains-
523 AM AST Sat Nov 1 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Mclear
Precip Type Tstms Showers Showers
Chance Precip (%) 60 20 10
Temp (24h trend) 88 (-1) 73 (-2) 91
RH % (24h trend) 68 (+1) 98 (+2) 59
Wind 20ft/early(mph) E 14 G17 E 13 E 17 G19
Wind 20ft/late(mph) E 14 G17 E 13 E 17 G19
Mixing Hgt(ft-agl/msl)4370 4690
Transport Wnd (mph) SE 17 E 16
Vent Rate (kt-ft) 65550 65660
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ017-020930-
Northern Hills-
523 AM AST Sat Nov 1 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Mclear
Precip Type Tstms Showers Showers
Chance Precip (%) 70 10 10
Temp (24h trend) 86 (-2) 71 (-2) 90
RH % (24h trend) 69 (+3) 98 (+1) 57
Wind 20ft/early(mph) E 13 E 8 E 16
Wind 20ft/late(mph) E 13 E 8 E 16
Mixing Hgt(ft-agl/msl)4550 5710
Transport Wnd (mph) SE 17 E 15
Vent Rate (kt-ft) 68250 74230
Dispersion 5 5
DSI 5 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ018-020930-
West Coast-
523 AM AST Sat Nov 1 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Mclear
Precip Type Tstms Showers Showers
Chance Precip (%) 60 30 20
Temp (24h trend) 89 (0) 73 (-1) 91
RH % (24h trend) 68 (0) 99 (+3) 61
Wind 20ft/early(mph) E 18 E 16 SE 16
Wind 20ft/late(mph) E 18 E 16 SE 16
Mixing Hgt(ft-agl/msl)4100 5060
Transport Wnd (mph) SE 16 E 15
Vent Rate (kt-ft) 57400 65780
Dispersion 5 5
DSI 5 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ019-020930-
Eastern Interior-
523 AM AST Sat Nov 1 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Showers
Chance Precip (%) 70 40 40
Temp (24h trend) 85 (-2) 72 (-2) 89
RH % (24h trend) 74 (+6) 100 (+1) 60
Wind 20ft/early(mph) SE 14 E 17 E 13
Wind 20ft/late(mph) SE 14 E 17 E 13
Mixing Hgt(ft-agl/msl)3330 4480
Transport Wnd (mph) SE 18 SE 15
Vent Rate (kt-ft) 53280 58240
Dispersion 5 5
DSI 5 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ022-020930-
Luquillo Mountain Range-
523 AM AST Sat Nov 1 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Showers
Chance Precip (%) 70 40 40
Temp (24h trend) 81 (+1) 69 (-2) 85
RH % (24h trend) 79 (+2) 100 (0) 66
Wind 20ft/early(mph) SE 12 SE 13 E 11
Wind 20ft/late(mph) SE 12 SE 13 E 11
Mixing Hgt(ft-agl/msl)2770 3550
Transport Wnd (mph) SE 20 E 16
Vent Rate (kt-ft) 47090 49700
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ023-020930-
Central Mountain Range-
523 AM AST Sat Nov 1 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Mclear
Precip Type Tstms Showers Showers
Chance Precip (%) 70 20 20
Temp (24h trend) 84 (+1) 68 (-3) 87
RH % (24h trend) 70 (0) 99 (+3) 59
Wind 20ft/early(mph) E 12 E 10 SE 11
Wind 20ft/late(mph) E 12 E 10 SE 11
Mixing Hgt(ft-agl/msl)4590 6200
Transport Wnd (mph) SE 20 SE 15
Vent Rate (kt-ft) 78030 80600
Dispersion 5 5
DSI 5 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ024-020930-
Cayey Mountain Range-
523 AM AST Sat Nov 1 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Showers
Chance Precip (%) 70 40 40
Temp (24h trend) 80 (-2) 69 (-2) 84
RH % (24h trend) 81 (+7) 100 (0) 67
Wind 20ft/early(mph) SE 12 E 12 E 11
Wind 20ft/late(mph) SE 12 E 12 E 11
Mixing Hgt(ft-agl/msl)2540 3940
Transport Wnd (mph) SE 21 E 16
Vent Rate (kt-ft) 45720 55160
Dispersion 5 5
DSI 5 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ025-020930-
Vieques-
523 AM AST Sat Nov 1 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Mclear
Precip Type Tstms Showers Showers
Chance Precip (%) 60 30 20
Temp (24h trend) 88 (+1) 76 (0) 90
RH % (24h trend) 66 (-2) 92 (-6) 59
Wind 20ft/early(mph) SE 17 G21 E 20 G24 E 14 G19
Wind 20ft/late(mph) SE 17 G21 E 20 G24 E 14 G19
Mixing Hgt(ft-agl/msl)2970 4040
Transport Wnd (mph) SE 18 E 23
Vent Rate (kt-ft) 47520 80800
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-020930-
Culebra-
523 AM AST Sat Nov 1 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Mclear
Precip Type Tstms Showers Showers
Chance Precip (%) 60 20 20
Temp (24h trend) 91 (+3) 77 (0) 91
RH % (24h trend) 61 (-8) 93 (-5) 55
Wind 20ft/early(mph) E 17 G21 E 20 G25 E 14 G19
Wind 20ft/late(mph) E 17 G21 E 20 G25 E 14 G19
Mixing Hgt(ft-agl/msl)2870 4010
Transport Wnd (mph) SE 20 E 23
Vent Rate (kt-ft) 48790 80200
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-020930-
Southwest Coastal Plains and Mona Island-
523 AM AST Sat Nov 1 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mclear
Precip Type Tstms Tstms Showers
Chance Precip (%) 60 40 10
Temp (24h trend) 90 (+1) 74 (-2) 90
RH % (24h trend) 65 (0) 96 (+5) 59
Wind 20ft/early(mph) E 24 G31 E 20 G24 E 20 G26
Wind 20ft/late(mph) E 24 G31 E 20 G24 E 20 G26
Mixing Hgt(ft-agl/msl)3880 4860
Transport Wnd (mph) E 24 E 22
Vent Rate (kt-ft) 81480 92340
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ001-020930-
Saint Thomas and Saint John-
523 AM AST Sat Nov 1 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Mclear
Precip Type Tstms Showers Showers
Chance Precip (%) 50 10 10
Temp (24h trend) 86 (+1) 75 (-3) 86
RH % (24h trend) 69 (-4) 96 (0) 63
Wind 20ft/early(mph) SE 17 G21 E 21 G26 E 17 G21
Wind 20ft/late(mph) SE 17 G21 E 21 G26 E 17 G21
Mixing Hgt(ft-agl/msl)3270 4110
Transport Wnd (mph) SE 23 E 23
Vent Rate (kt-ft) 65400 82200
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-020930-
St Croix-
523 AM AST Sat Nov 1 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Mclear
Precip Type Tstms Showers Showers
Chance Precip (%) 50 30 20
Temp (24h trend) 87 (+1) 76 (-2) 90
RH % (24h trend) 70 (-3) 91 (-5) 61
Wind 20ft/early(mph) SE 17 G20 E 19 G23 E 16 G19
Wind 20ft/late(mph) SE 17 G20 E 19 G23 E 16 G19
Mixing Hgt(ft-agl/msl)3620 4460
Transport Wnd (mph) SE 22 E 21
Vent Rate (kt-ft) 68780 80280
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$