Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
792
FNCA52 TJSJ 110832
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
432 AM AST Sat Oct 11 2025
.DISCUSSION...
Today, southerly winds between around 8 to 12 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 associated to
Tropical Storm Jerry. The fire danger threat is expected to
remain low today.
PRZ014-120845-
Southeast Coastal Plains-
432 AM AST Sat Oct 11 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Showers
Chance Precip (%) 60 50 30
Temp (24h trend) 90 (+2) 74 (-2) 91
RH % (24h trend) 64 (+3) 95 (+2) 62
Wind 20ft/early(mph) S 9 SE 8 SE 11
Wind 20ft/late(mph) S 9 SE 8 SE 11
Mixing Hgt(ft-agl/msl)4140 4120
Transport Wnd (mph) S 10 E 13
Vent Rate (kt-ft) 37260 45320
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ015-120845-
Southern Hills-
432 AM AST Sat Oct 11 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 60 20 40
Temp (24h trend) 87 (+3) 70 (-3) 87
RH % (24h trend) 66 (-5) 99 (+4) 64
Wind 20ft/early(mph) S 11 SE 9 SE 10
Wind 20ft/late(mph) S 11 SE 9 SE 10
Mixing Hgt(ft-agl/msl)4570 5020
Transport Wnd (mph) S 12 SE 12
Vent Rate (kt-ft) 45700 50200
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ016-120845-
North Coastal Plains-
432 AM AST Sat Oct 11 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 70 10 60
Temp (24h trend) 91 (+2) 73 (-2) 91
RH % (24h trend) 62 (-7) 97 (+2) 63
Wind 20ft/early(mph) S 12 S 11 E 11
Wind 20ft/late(mph) S 12 S 11 E 11
Mixing Hgt(ft-agl/msl)4670 4720
Transport Wnd (mph) S 9 SE 10
Vent Rate (kt-ft) 37360 42480
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ017-120845-
Northern Hills-
432 AM AST Sat Oct 11 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms None Tstms
Chance Precip (%) 60 0 70
Temp (24h trend) 89 (+2) 71 (-2) 89
RH % (24h trend) 63 (-5) 97 (+2) 64
Wind 20ft/early(mph) S 11 S 9 E 10
Wind 20ft/late(mph) S 11 S 9 E 10
Mixing Hgt(ft-agl/msl)4980 5260
Transport Wnd (mph) S 9 SE 9
Vent Rate (kt-ft) 39840 42080
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ018-120845-
West Coast-
432 AM AST Sat Oct 11 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 30 20 50
Temp (24h trend) 91 (+2) 74 (-1) 91
RH % (24h trend) 65 (-4) 98 (+2) 63
Wind 20ft/early(mph) S 13 SE 13 SE 13
Wind 20ft/late(mph) S 13 SE 13 SE 13
Mixing Hgt(ft-agl/msl)4500 4870
Transport Wnd (mph) S 15 SE 14
Vent Rate (kt-ft) 58500 58440
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ019-120845-
Eastern Interior-
432 AM AST Sat Oct 11 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 70 40 60
Temp (24h trend) 89 (+2) 72 (-2) 89
RH % (24h trend) 64 (-5) 99 (+2) 63
Wind 20ft/early(mph) S 11 S 10 SE 10
Wind 20ft/late(mph) S 11 S 10 SE 10
Mixing Hgt(ft-agl/msl)4740 4320
Transport Wnd (mph) S 13 SE 12
Vent Rate (kt-ft) 52140 43200
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ022-120845-
Luquillo Mountain Range-
432 AM AST Sat Oct 11 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 70 60 60
Temp (24h trend) 86 (+5) 69 (-3) 85
RH % (24h trend) 68 (-9) 100 (0) 68
Wind 20ft/early(mph) S 9 S 8 SE 9
Wind 20ft/late(mph) S 9 S 8 SE 9
Mixing Hgt(ft-agl/msl)4110 3800
Transport Wnd (mph) S 13 SE 14
Vent Rate (kt-ft) 45210 45600
Dispersion 5 5
DSI 5 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ023-120845-
Central Mountain Range-
432 AM AST Sat Oct 11 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 60 10 70
Temp (24h trend) 86 (+4) 69 (-3) 87
RH % (24h trend) 65 (-8) 97 (+2) 66
Wind 20ft/early(mph) S 12 S 11 SE 8
Wind 20ft/late(mph) S 12 S 11 SE 8
Mixing Hgt(ft-agl/msl)5020 5570
Transport Wnd (mph) S 13 SE 10
Vent Rate (kt-ft) 55220 50130
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ024-120845-
Cayey Mountain Range-
432 AM AST Sat Oct 11 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 60 60 60
Temp (24h trend) 84 (+2) 70 (-1) 85
RH % (24h trend) 69 (-6) 100 (0) 68
Wind 20ft/early(mph) S 9 S 6 SE 6
Wind 20ft/late(mph) S 9 S 6 SE 6
Mixing Hgt(ft-agl/msl)4410 3330
Transport Wnd (mph) S 13 SE 13
Vent Rate (kt-ft) 48510 36630
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ025-120845-
Vieques-
432 AM AST Sat Oct 11 2025
Today Tonight Sun
Cloud Cover Mcldy Mcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 80 70 60
Temp (24h trend) 89 (+1) 75 (-1) 90
RH % (24h trend) 63 (-4) 98 (0) 60
Wind 20ft/early(mph) S 11 S 12 SE 11
Wind 20ft/late(mph) S 11 S 12 SE 11
Mixing Hgt(ft-agl/msl)3100 3740
Transport Wnd (mph) S 16 SE 13
Vent Rate (kt-ft) 43400 41140
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-120845-
Culebra-
432 AM AST Sat Oct 11 2025
Today Tonight Sun
Cloud Cover Mcldy Mcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 80 70 60
Temp (24h trend) 90 (+1) 76 (-2) 90
RH % (24h trend) 62 (-6) 97 (0) 60
Wind 20ft/early(mph) S 12 S 12 SE 11
Wind 20ft/late(mph) S 12 S 12 SE 11
Mixing Hgt(ft-agl/msl)3220 3730
Transport Wnd (mph) S 17 SE 14
Vent Rate (kt-ft) 48300 44760
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-120845-
Southwest Coastal Plains and Mona Island-
432 AM AST Sat Oct 11 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Showers
Chance Precip (%) 40 30 20
Temp (24h trend) 92 (+3) 75 (-2) 91
RH % (24h trend) 61 (+2) 94 (+4) 60
Wind 20ft/early(mph) SE 14 G19 SE 14 G18 SE 17 G22
Wind 20ft/late(mph) SE 14 G19 SE 14 G18 SE 17 G22
Mixing Hgt(ft-agl/msl)4410 4780
Transport Wnd (mph) S 13 SE 17
Vent Rate (kt-ft) 48510 71700
Dispersion 5 5
DSI 5 5 6
RH Recovery Excellent
Remarks...None.
$$
VIZ001-120845-
Saint Thomas and Saint John-
432 AM AST Sat Oct 11 2025
Today Tonight Sun
Cloud Cover Mcldy Mcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 90 70 60
Temp (24h trend) 87 (+1) 74 (-3) 87
RH % (24h trend) 67 (-6) 100 (+4) 64
Wind 20ft/early(mph) S 13 G17 SE 12 SE 12
Wind 20ft/late(mph) S 13 G17 SE 12 SE 12
Mixing Hgt(ft-agl/msl)3240 3880
Transport Wnd (mph) S 18 SE 15
Vent Rate (kt-ft) 51840 50440
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-120845-
St Croix-
432 AM AST Sat Oct 11 2025
Today Tonight Sun
Cloud Cover Mcldy Mcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 70 70 60
Temp (24h trend) 88 (+1) 75 (-2) 89
RH % (24h trend) 66 (-6) 99 (+3) 63
Wind 20ft/early(mph) SE 13 SE 11 E 12
Wind 20ft/late(mph) SE 13 SE 11 E 12
Mixing Hgt(ft-agl/msl)3720 4570
Transport Wnd (mph) S 18 E 15
Vent Rate (kt-ft) 59520 59410
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$