Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
797
FNCA52 TJSJ 150825
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
425 AM AST Sat Nov 15 2025
.DISCUSSION...
Surface winds will remain light to gentle due to a pre-frontal
trough north of the region. Some patches of moisture will maintain
RH values in the mid-50s and increase more into the afternoon
hours. Soil conditions remain slightly favorable for a hostile
fire danger environment. As a result, given the weather pattern,
the fire danger threat will remain low for today.
PRZ014-160830-
Southeast Coastal Plains-
425 AM AST Sat Nov 15 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Tstms Tstms
Chance Precip (%) 40 60 50
Temp (24h trend) 86 (0) 71 (-2) 86
RH % (24h trend) 53 (-3) 85 (+1) 55
Wind 20ft/early(mph) S 6 Lgt/Var SE 8
Wind 20ft/late(mph) S 6 Lgt/Var SE 8
Mixing Hgt(ft-agl/msl)4320 4200
Transport Wnd (mph) SE 3 SE 5
Vent Rate (kt-ft) 12960 16800
Dispersion 5 5
DSI 5 1 5
RH Recovery Excellent
Remarks...None.
$$
PRZ015-160830-
Southern Hills-
425 AM AST Sat Nov 15 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 60 50 50
Temp (24h trend) 84 (+2) 67 (-3) 83
RH % (24h trend) 62 (-5) 96 (+4) 64
Wind 20ft/early(mph) S 5 Lgt/Var S 8
Wind 20ft/late(mph) S 5 Lgt/Var S 8
Mixing Hgt(ft-agl/msl)5050 5070
Transport Wnd (mph) SE 3 E 3
Vent Rate (kt-ft) 15150 15210
Dispersion 5 5
DSI 4 1 5
RH Recovery Excellent
Remarks...None.
$$
PRZ016-160830-
North Coastal Plains-
425 AM AST Sat Nov 15 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 50 60 80
Temp (24h trend) 87 (0) 71 (-2) 86
RH % (24h trend) 61 (-5) 92 (+2) 64
Wind 20ft/early(mph) N 8 Lgt/Var NE 9
Wind 20ft/late(mph) N 8 Lgt/Var NE 9
Mixing Hgt(ft-agl/msl)4430 4560
Transport Wnd (mph) SW 3 NE 3
Vent Rate (kt-ft) 13290 13680
Dispersion 4 5
DSI 5 1 4
RH Recovery Excellent
Remarks...None.
$$
PRZ017-160830-
Northern Hills-
425 AM AST Sat Nov 15 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 70 60 90
Temp (24h trend) 85 (0) 69 (-1) 84
RH % (24h trend) 63 (-4) 94 (+2) 66
Wind 20ft/early(mph) NW 6 Lgt/Var N 6
Wind 20ft/late(mph) NW 6 Lgt/Var N 6
Mixing Hgt(ft-agl/msl)4930 4900
Transport Wnd (mph) SW 3 SE 1
Vent Rate (kt-ft) 14790 4900
Dispersion 5 4
DSI 5 1 4
RH Recovery Excellent
Remarks...None.
$$
PRZ018-160830-
West Coast-
425 AM AST Sat Nov 15 2025
Today Tonight Sun
Cloud Cover Pcldy Mcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 50 60 40
Temp (24h trend) 87 (0) 70 (-1) 86
RH % (24h trend) 65 (-3) 98 (+4) 64
Wind 20ft/early(mph) S 6 Lgt/Var S 8
Wind 20ft/late(mph) S 6 Lgt/Var S 8
Mixing Hgt(ft-agl/msl)4360 4510
Transport Wnd (mph) S 6 SE 5
Vent Rate (kt-ft) 21800 18040
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ019-160830-
Eastern Interior-
425 AM AST Sat Nov 15 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 70 50 60
Temp (24h trend) 86 (+1) 68 (-3) 85
RH % (24h trend) 60 (-3) 97 (+3) 64
Wind 20ft/early(mph) S 5 Lgt/Var SE 8
Wind 20ft/late(mph) S 5 Lgt/Var SE 8
Mixing Hgt(ft-agl/msl)5150 6010
Transport Wnd (mph) S 3 SE 5
Vent Rate (kt-ft) 15450 24040
Dispersion 5 5
DSI 5 1 5
RH Recovery Excellent
Remarks...None.
$$
PRZ022-160830-
Luquillo Mountain Range-
425 AM AST Sat Nov 15 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 50 60 70
Temp (24h trend) 81 (+2) 64 (-4) 82
RH % (24h trend) 65 (-6) 100 (+1) 68
Wind 20ft/early(mph) S 5 Lgt/Var S 6
Wind 20ft/late(mph) S 5 Lgt/Var S 6
Mixing Hgt(ft-agl/msl)4340 4520
Transport Wnd (mph) S 3 SE 5
Vent Rate (kt-ft) 13020 18080
Dispersion 4 5
DSI 5 0 5
RH Recovery Excellent
Remarks...None.
$$
PRZ023-160830-
Central Mountain Range-
425 AM AST Sat Nov 15 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 90 70 70
Temp (24h trend) 83 (+3) 65 (-3) 82
RH % (24h trend) 66 (-5) 97 (+4) 67
Wind 20ft/early(mph) S 6 Lgt/Var Lgt/Var
Wind 20ft/late(mph) S 6 Lgt/Var Lgt/Var
Mixing Hgt(ft-agl/msl)5540 5740
Transport Wnd (mph) S 2 SE 2
Vent Rate (kt-ft) 11080 11480
Dispersion 5 5
DSI 4 1 4
RH Recovery Excellent
Remarks...None.
$$
PRZ024-160830-
Cayey Mountain Range-
425 AM AST Sat Nov 15 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Tstms Tstms
Chance Precip (%) 50 50 60
Temp (24h trend) 82 (+2) 66 (-2) 81
RH % (24h trend) 64 (-3) 99 (+1) 68
Wind 20ft/early(mph) Lgt/Var Lgt/Var S 5
Wind 20ft/late(mph) Lgt/Var Lgt/Var S 5
Mixing Hgt(ft-agl/msl)4570 4980
Transport Wnd (mph) S 3 SE 5
Vent Rate (kt-ft) 13710 19920
Dispersion 4 5
DSI 5 0 4
RH Recovery Excellent
Remarks...None.
$$
PRZ025-160830-
Vieques-
425 AM AST Sat Nov 15 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 40 40 60
Temp (24h trend) 87 (-1) 70 (-2) 87
RH % (24h trend) 57 (0) 100 (+3) 58
Wind 20ft/early(mph) Lgt/Var Lgt/Var SE 5
Wind 20ft/late(mph) Lgt/Var Lgt/Var SE 5
Mixing Hgt(ft-agl/msl)3420 3300
Transport Wnd (mph) SE 7 SE 7
Vent Rate (kt-ft) 20520 19800
Dispersion 5 5
DSI 6 2 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-160830-
Culebra-
425 AM AST Sat Nov 15 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 50 40 60
Temp (24h trend) 87 (-1) 71 (-3) 88
RH % (24h trend) 57 (-3) 100 (+6) 57
Wind 20ft/early(mph) S 5 Lgt/Var SE 6
Wind 20ft/late(mph) S 5 Lgt/Var SE 6
Mixing Hgt(ft-agl/msl)3530 3370
Transport Wnd (mph) SE 7 SE 7
Vent Rate (kt-ft) 21180 20220
Dispersion 5 5
DSI 6 2 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-160830-
Southwest Coastal Plains and Mona Island-
425 AM AST Sat Nov 15 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Tstms Tstms
Chance Precip (%) 30 60 50
Temp (24h trend) 87 (0) 71 (-2) 87
RH % (24h trend) 54 (-3) 91 (+6) 53
Wind 20ft/early(mph) SE 8 Lgt/Var SE 11
Wind 20ft/late(mph) SE 8 Lgt/Var SE 11
Mixing Hgt(ft-agl/msl)4680 4690
Transport Wnd (mph) SE 6 SE 7
Vent Rate (kt-ft) 23400 28140
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
VIZ001-160830-
Saint Thomas and Saint John-
425 AM AST Sat Nov 15 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Showers Tstms Tstms
Chance Precip (%) 40 60 60
Temp (24h trend) 85 (+1) 68 (-6) 85
RH % (24h trend) 62 (-3) 100 (+7) 63
Wind 20ft/early(mph) Lgt/Var Lgt/Var SE 6
Wind 20ft/late(mph) Lgt/Var Lgt/Var SE 6
Mixing Hgt(ft-agl/msl)3490 3320
Transport Wnd (mph) SE 7 SE 7
Vent Rate (kt-ft) 20940 19920
Dispersion 5 5
DSI 5 3 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-160830-
St Croix-
425 AM AST Sat Nov 15 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 10 40 60
Temp (24h trend) 87 (0) 70 (-4) 87
RH % (24h trend) 59 (-3) 100 (+8) 59
Wind 20ft/early(mph) S 5 Lgt/Var SE 5
Wind 20ft/late(mph) S 5 Lgt/Var SE 5
Mixing Hgt(ft-agl/msl)4710 4280
Transport Wnd (mph) S 5 SE 6
Vent Rate (kt-ft) 18840 21400
Dispersion 5 5
DSI 5 2 6
RH Recovery Excellent
Remarks...None.
$$
$$