Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
439
FNCA52 TJSJ 190733
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
333 AM AST Wed Nov 19 2025
.DISCUSSION...
Similar weather conditions as yesterday are expected today across
the CWA. Winds should remain from the east, between 10 - 15 mph
and isolated areas with gusts up to 22 mph. Additionally,
relative humidities should remain above thresholds as moisture
content should remain high across the islands, with showers and
isolated thunderstorms moving over windward sections during the
morning and afternoon convection over western and southwestern
Puerto Rico. Given the expected weather conditions, no fire
weather is expected today, hence, the threat will remain once
again low.
PRZ014-200745-
Southeast Coastal Plains-
333 AM AST Wed Nov 19 2025
Today Tonight Thu
Cloud Cover Mclear Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 40 10 50
Temp (24h trend) 88 (+1) 71 (-2) 88
RH % (24h trend) 55 (-4) 93 (+2) 51
Wind 20ft/early(mph) E 17 G22 NE 9 E 13 G17
Wind 20ft/late(mph) E 17 G22 NE 9 E 13 G17
Mixing Hgt(ft-agl/msl)4200 4590
Transport Wnd (mph) E 14 NE 9
Vent Rate (kt-ft) 50400 36720
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ015-200745-
Southern Hills-
333 AM AST Wed Nov 19 2025
Today Tonight Thu
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 10 50
Temp (24h trend) 85 (+2) 67 (-3) 85
RH % (24h trend) 65 (-5) 100 (+3) 62
Wind 20ft/early(mph) E 12 NE 10 NE 11
Wind 20ft/late(mph) E 12 NE 10 NE 11
Mixing Hgt(ft-agl/msl)4510 4530
Transport Wnd (mph) E 13 NE 9
Vent Rate (kt-ft) 49610 36240
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ016-200745-
North Coastal Plains-
333 AM AST Wed Nov 19 2025
Today Tonight Thu
Cloud Cover Mclear Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 50 40
Temp (24h trend) 87 (0) 71 (-2) 87
RH % (24h trend) 67 (-2) 98 (0) 65
Wind 20ft/early(mph) E 16 G18 E 13 NE 14
Wind 20ft/late(mph) E 16 G18 E 13 NE 14
Mixing Hgt(ft-agl/msl)3920 4180
Transport Wnd (mph) E 17 NE 13
Vent Rate (kt-ft) 58800 45980
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ017-200745-
Northern Hills-
333 AM AST Wed Nov 19 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 30 40 20
Temp (24h trend) 85 (0) 69 (-1) 85
RH % (24h trend) 70 (0) 99 (0) 67
Wind 20ft/early(mph) E 14 E 11 NE 13
Wind 20ft/late(mph) E 14 E 11 NE 13
Mixing Hgt(ft-agl/msl)4320 4380
Transport Wnd (mph) E 15 E 12
Vent Rate (kt-ft) 56160 43800
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ018-200745-
West Coast-
333 AM AST Wed Nov 19 2025
Today Tonight Thu
Cloud Cover Pcldy Mclear Mclear
Precip Type Tstms Showers Showers
Chance Precip (%) 70 40 50
Temp (24h trend) 88 (0) 69 (-2) 88
RH % (24h trend) 64 (-3) 98 (0) 63
Wind 20ft/early(mph) E 12 E 14 E 16
Wind 20ft/late(mph) E 12 E 14 E 16
Mixing Hgt(ft-agl/msl)4100 4090
Transport Wnd (mph) E 10 NE 8
Vent Rate (kt-ft) 36900 28630
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ019-200745-
Eastern Interior-
333 AM AST Wed Nov 19 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 50 50
Temp (24h trend) 85 (+1) 68 (-3) 86
RH % (24h trend) 68 (-3) 99 (0) 64
Wind 20ft/early(mph) E 12 NE 11 NE 10
Wind 20ft/late(mph) E 12 NE 11 NE 10
Mixing Hgt(ft-agl/msl)3810 4450
Transport Wnd (mph) E 14 NE 10
Vent Rate (kt-ft) 45720 40050
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ022-200745-
Luquillo Mountain Range-
333 AM AST Wed Nov 19 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 50 50
Temp (24h trend) 81 (+2) 67 (-2) 82
RH % (24h trend) 73 (-5) 100 (0) 69
Wind 20ft/early(mph) E 11 E 8 NE 9
Wind 20ft/late(mph) E 11 E 8 NE 9
Mixing Hgt(ft-agl/msl)3190 4220
Transport Wnd (mph) E 15 NE 10
Vent Rate (kt-ft) 41470 37980
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ023-200745-
Central Mountain Range-
333 AM AST Wed Nov 19 2025
Today Tonight Thu
Cloud Cover Pcldy Mclear Mclear
Precip Type Tstms Showers Showers
Chance Precip (%) 60 20 40
Temp (24h trend) 83 (+2) 65 (-2) 84
RH % (24h trend) 70 (-3) 100 (+2) 67
Wind 20ft/early(mph) E 10 E 10 NE 12
Wind 20ft/late(mph) E 10 E 10 NE 12
Mixing Hgt(ft-agl/msl)4880 4600
Transport Wnd (mph) E 12 E 9
Vent Rate (kt-ft) 48800 36800
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ024-200745-
Cayey Mountain Range-
333 AM AST Wed Nov 19 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 50 50
Temp (24h trend) 81 (+1) 67 (-2) 82
RH % (24h trend) 73 (-2) 100 (0) 67
Wind 20ft/early(mph) E 10 NE 8 NE 9
Wind 20ft/late(mph) E 10 NE 8 NE 9
Mixing Hgt(ft-agl/msl)3420 4610
Transport Wnd (mph) E 15 NE 10
Vent Rate (kt-ft) 44460 41490
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ025-200745-
Vieques-
333 AM AST Wed Nov 19 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 40 30
Temp (24h trend) 87 (+1) 73 (-1) 86
RH % (24h trend) 64 (-4) 97 (-2) 62
Wind 20ft/early(mph) E 14 G18 NE 14 G18 NE 12
Wind 20ft/late(mph) E 14 G18 NE 14 G18 NE 12
Mixing Hgt(ft-agl/msl)3350 3640
Transport Wnd (mph) E 16 NE 15
Vent Rate (kt-ft) 46900 47320
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-200745-
Culebra-
333 AM AST Wed Nov 19 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 50 40
Temp (24h trend) 88 (+1) 75 (0) 88
RH % (24h trend) 61 (-6) 96 (-2) 60
Wind 20ft/early(mph) E 14 G18 E 13 G18 NE 11
Wind 20ft/late(mph) E 14 G18 E 13 G18 NE 11
Mixing Hgt(ft-agl/msl)3350 3730
Transport Wnd (mph) E 15 NE 14
Vent Rate (kt-ft) 43550 44760
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-200745-
Southwest Coastal Plains and Mona Island-
333 AM AST Wed Nov 19 2025
Today Tonight Thu
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 70 40 80
Temp (24h trend) 89 (+1) 71 (-1) 89
RH % (24h trend) 53 (-5) 92 (+1) 51
Wind 20ft/early(mph) E 17 G22 E 10 SE 14
Wind 20ft/late(mph) E 17 G22 E 10 SE 14
Mixing Hgt(ft-agl/msl)4580 4570
Transport Wnd (mph) E 13 NE 6
Vent Rate (kt-ft) 50380 22850
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
VIZ001-200745-
Saint Thomas and Saint John-
333 AM AST Wed Nov 19 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 40 40 20
Temp (24h trend) 86 (+1) 72 (-3) 86
RH % (24h trend) 67 (-5) 99 (+3) 64
Wind 20ft/early(mph) E 14 G18 E 14 G19 NE 11
Wind 20ft/late(mph) E 14 G18 E 14 G19 NE 11
Mixing Hgt(ft-agl/msl)3340 3860
Transport Wnd (mph) E 16 NE 14
Vent Rate (kt-ft) 46760 46320
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-200745-
St Croix-
333 AM AST Wed Nov 19 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 50 30 20
Temp (24h trend) 87 (+1) 74 (-1) 87
RH % (24h trend) 66 (-4) 96 (-1) 65
Wind 20ft/early(mph) E 13 G17 E 13 G17 NE 12
Wind 20ft/late(mph) E 13 G17 E 13 G17 NE 12
Mixing Hgt(ft-agl/msl)3930 3940
Transport Wnd (mph) E 17 NE 15
Vent Rate (kt-ft) 58950 51220
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$