Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
294
FNCA52 TJSJ 120925
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
525 AM AST Sun Oct 12 2025
.DISCUSSION...
Today, southeasterly winds between around 10 to 13 mph will
prevail across the area. Minimum relative humidity values are
expected to remain above the fire critical threshold as moisture
content remain above average across the forecast area. Expect a
typical weather pattern with afternoon convection developing from
the interior into western Puerto Rico. The fire danger threat is
expected to remain low today.
PRZ014-130930-
Southeast Coastal Plains-
525 AM AST Sun Oct 12 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Showers
Chance Precip (%) 60 40 30
Temp (24h trend) 90 (+2) 74 (-2) 92
RH % (24h trend) 62 (-7) 92 (-1) 57
Wind 20ft/early(mph) SE 11 E 9 E 13 G18
Wind 20ft/late(mph) SE 11 E 9 E 13 G18
Mixing Hgt(ft-agl/msl)4000 4550
Transport Wnd (mph) SE 12 E 14
Vent Rate (kt-ft) 40000 54600
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ015-130930-
Southern Hills-
525 AM AST Sun Oct 12 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 50 50 50
Temp (24h trend) 86 (+2) 70 (-3) 88
RH % (24h trend) 65 (-7) 96 (+1) 59
Wind 20ft/early(mph) SE 10 E 9 E 11
Wind 20ft/late(mph) SE 10 E 9 E 11
Mixing Hgt(ft-agl/msl)4920 5270
Transport Wnd (mph) SE 12 E 14
Vent Rate (kt-ft) 49200 63240
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ016-130930-
North Coastal Plains-
525 AM AST Sun Oct 12 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 70 30 40
Temp (24h trend) 91 (+1) 73 (-3) 91
RH % (24h trend) 62 (-4) 96 (+3) 60
Wind 20ft/early(mph) E 11 SE 9 E 14 G17
Wind 20ft/late(mph) E 11 SE 9 E 14 G17
Mixing Hgt(ft-agl/msl)5310 5210
Transport Wnd (mph) SE 9 E 14
Vent Rate (kt-ft) 42480 62520
Dispersion 5 5
DSI 5 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ017-130930-
Northern Hills-
525 AM AST Sun Oct 12 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 80 50 60
Temp (24h trend) 88 (0) 71 (-2) 89
RH % (24h trend) 64 (-1) 97 (+3) 61
Wind 20ft/early(mph) E 9 SE 6 E 13
Wind 20ft/late(mph) E 9 SE 6 E 13
Mixing Hgt(ft-agl/msl)5230 5430
Transport Wnd (mph) SE 8 E 10
Vent Rate (kt-ft) 36610 48870
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ018-130930-
West Coast-
525 AM AST Sun Oct 12 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 70 70 60
Temp (24h trend) 90 (0) 73 (-2) 92
RH % (24h trend) 65 (-4) 97 (+2) 58
Wind 20ft/early(mph) E 13 E 10 E 13
Wind 20ft/late(mph) E 13 E 10 E 13
Mixing Hgt(ft-agl/msl)4860 5040
Transport Wnd (mph) SE 13 E 10
Vent Rate (kt-ft) 53460 45360
Dispersion 5 5
DSI 6 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ019-130930-
Eastern Interior-
525 AM AST Sun Oct 12 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 50 40 50
Temp (24h trend) 88 (+1) 71 (-3) 89
RH % (24h trend) 64 (-4) 97 (0) 60
Wind 20ft/early(mph) SE 11 E 10 E 13
Wind 20ft/late(mph) SE 11 E 10 E 13
Mixing Hgt(ft-agl/msl)5300 5250
Transport Wnd (mph) SE 12 E 15
Vent Rate (kt-ft) 53000 68250
Dispersion 5 5
DSI 5 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ022-130930-
Luquillo Mountain Range-
525 AM AST Sun Oct 12 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 60 50 50
Temp (24h trend) 85 (+3) 69 (-3) 85
RH % (24h trend) 69 (-6) 100 (0) 66
Wind 20ft/early(mph) SE 10 E 8 E 12
Wind 20ft/late(mph) SE 10 E 8 E 12
Mixing Hgt(ft-agl/msl)4060 3980
Transport Wnd (mph) SE 13 E 16
Vent Rate (kt-ft) 44660 55720
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ023-130930-
Central Mountain Range-
525 AM AST Sun Oct 12 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 80 60 80
Temp (24h trend) 86 (+4) 68 (-4) 87
RH % (24h trend) 66 (-6) 97 (+3) 60
Wind 20ft/early(mph) SE 8 E 6 E 9
Wind 20ft/late(mph) SE 8 E 6 E 9
Mixing Hgt(ft-agl/msl)5480 5840
Transport Wnd (mph) SE 9 E 10
Vent Rate (kt-ft) 43840 52560
Dispersion 5 5
DSI 5 1 5
RH Recovery Excellent
Remarks...None.
$$
PRZ024-130930-
Cayey Mountain Range-
525 AM AST Sun Oct 12 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Showers
Chance Precip (%) 60 50 40
Temp (24h trend) 83 (+1) 70 (-2) 85
RH % (24h trend) 70 (-4) 99 (0) 65
Wind 20ft/early(mph) SE 8 E 6 E 11
Wind 20ft/late(mph) SE 8 E 6 E 11
Mixing Hgt(ft-agl/msl)4310 4710
Transport Wnd (mph) SE 12 E 15
Vent Rate (kt-ft) 43100 61230
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ025-130930-
Vieques-
525 AM AST Sun Oct 12 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Showers
Chance Precip (%) 50 40 40
Temp (24h trend) 89 (+1) 76 (-1) 90
RH % (24h trend) 60 (-6) 91 (-3) 58
Wind 20ft/early(mph) SE 11 E 12 E 14 G18
Wind 20ft/late(mph) SE 11 E 12 E 14 G18
Mixing Hgt(ft-agl/msl)3690 3670
Transport Wnd (mph) SE 15 E 18
Vent Rate (kt-ft) 47970 58720
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-130930-
Culebra-
525 AM AST Sun Oct 12 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Showers
Chance Precip (%) 50 40 40
Temp (24h trend) 91 (+2) 77 (-2) 92
RH % (24h trend) 59 (-8) 90 (-2) 56
Wind 20ft/early(mph) SE 12 E 12 E 13
Wind 20ft/late(mph) SE 12 E 12 E 13
Mixing Hgt(ft-agl/msl)3740 3640
Transport Wnd (mph) SE 16 E 18
Vent Rate (kt-ft) 52360 58240
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-130930-
Southwest Coastal Plains and Mona Island-
525 AM AST Sun Oct 12 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Tstms Showers
Chance Precip (%) 40 50 30
Temp (24h trend) 91 (+1) 74 (-3) 93
RH % (24h trend) 61 (-4) 92 (+2) 55
Wind 20ft/early(mph) SE 17 G22 E 12 E 18 G23
Wind 20ft/late(mph) SE 17 G22 E 12 E 18 G23
Mixing Hgt(ft-agl/msl)4830 4950
Transport Wnd (mph) SE 16 E 17
Vent Rate (kt-ft) 67620 74250
Dispersion 5 5
DSI 6 4 5
RH Recovery Excellent
Remarks...None.
$$
VIZ001-130930-
Saint Thomas and Saint John-
525 AM AST Sun Oct 12 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Showers
Chance Precip (%) 50 40 40
Temp (24h trend) 87 (+1) 76 (-2) 87
RH % (24h trend) 66 (-5) 95 (+1) 63
Wind 20ft/early(mph) E 13 G17 E 13 G17 E 14 G18
Wind 20ft/late(mph) E 13 G17 E 13 G17 E 14 G18
Mixing Hgt(ft-agl/msl)3740 3760
Transport Wnd (mph) SE 17 E 20
Vent Rate (kt-ft) 56100 63920
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-130930-
St Croix-
525 AM AST Sun Oct 12 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 40 40
Temp (24h trend) 88 (+1) 76 (-2) 90
RH % (24h trend) 65 (-5) 94 (+1) 62
Wind 20ft/early(mph) E 13 E 13 E 12
Wind 20ft/late(mph) E 13 E 13 E 12
Mixing Hgt(ft-agl/msl)4630 3950
Transport Wnd (mph) SE 16 E 17
Vent Rate (kt-ft) 64820 59250
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$