Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
282
FNCA52 TJSJ 230723
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
323 AM AST Sat Aug 23 2025
.DISCUSSION...
Moisture associated with a passing tropical wave south of the area
will continue to enhance showers and thunderstorms today, in
particular over the western and portions of southern Puerto Rico.
Southeasterly winds will maintain RH values near the threshold
values for fire danger. However, due to the expected conditions the
risk of fire spreading will remain low.
PRZ014-240730-
Southeast Coastal Plains-
323 AM AST Sat Aug 23 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 30 20
Temp (24h trend) 89 (0) 75 (-1) 92
RH % (24h trend) 59 (+1) 94 (+2) 50
Wind 20ft/early(mph) SE 11 E 9 E 17 G23
Wind 20ft/late(mph) SE 11 E 9 E 17 G23
Mixing Hgt(ft-agl/msl)3180 4390
Transport Wnd (mph) SE 9 E 16
Vent Rate (kt-ft) 25440 61460
Dispersion 5 5
DSI 5 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ015-240730-
Southern Hills-
323 AM AST Sat Aug 23 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Showers
Chance Precip (%) 50 30 20
Temp (24h trend) 87 (+2) 71 (-3) 90
RH % (24h trend) 66 (-4) 99 (+3) 61
Wind 20ft/early(mph) SE 9 E 8 E 13
Wind 20ft/late(mph) SE 9 E 8 E 13
Mixing Hgt(ft-agl/msl)4170 4860
Transport Wnd (mph) E 9 E 15
Vent Rate (kt-ft) 33360 63180
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ016-240730-
North Coastal Plains-
323 AM AST Sat Aug 23 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Showers
Chance Precip (%) 70 50 20
Temp (24h trend) 90 (+2) 75 (-1) 92
RH % (24h trend) 67 (-6) 99 (+1) 65
Wind 20ft/early(mph) E 10 SE 6 E 20
Wind 20ft/late(mph) E 10 SE 6 E 20
Mixing Hgt(ft-agl/msl)3710 4330
Transport Wnd (mph) E 9 E 16
Vent Rate (kt-ft) 29680 60620
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ017-240730-
Northern Hills-
323 AM AST Sat Aug 23 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Showers
Chance Precip (%) 80 60 30
Temp (24h trend) 88 (+1) 72 (-2) 90
RH % (24h trend) 69 (-1) 99 (0) 65
Wind 20ft/early(mph) E 9 SE 5 E 18
Wind 20ft/late(mph) E 9 SE 5 E 18
Mixing Hgt(ft-agl/msl)4600 5520
Transport Wnd (mph) E 8 E 14
Vent Rate (kt-ft) 32200 66240
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ018-240730-
West Coast-
323 AM AST Sat Aug 23 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 50 30 60
Temp (24h trend) 88 (-3) 73 (-1) 92
RH % (24h trend) 68 (+4) 100 (+2) 63
Wind 20ft/early(mph) E 11 E 9 E 13
Wind 20ft/late(mph) E 11 E 9 E 13
Mixing Hgt(ft-agl/msl)4140 4020
Transport Wnd (mph) E 7 E 9
Vent Rate (kt-ft) 24840 32160
Dispersion 5 5
DSI 5 4 5
RH Recovery Excellent
Remarks...None.
$$
PRZ019-240730-
Eastern Interior-
323 AM AST Sat Aug 23 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Showers
Chance Precip (%) 60 50 30
Temp (24h trend) 88 (+2) 72 (-3) 90
RH % (24h trend) 69 (-4) 99 (0) 62
Wind 20ft/early(mph) SE 8 SE 10 E 14
Wind 20ft/late(mph) SE 8 SE 10 E 14
Mixing Hgt(ft-agl/msl)3910 5210
Transport Wnd (mph) SE 9 E 16
Vent Rate (kt-ft) 31280 72940
Dispersion 5 5
DSI 5 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ022-240730-
Luquillo Mountain Range-
323 AM AST Sat Aug 23 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Showers
Chance Precip (%) 70 50 40
Temp (24h trend) 84 (+4) 70 (-2) 86
RH % (24h trend) 73 (-9) 100 (0) 70
Wind 20ft/early(mph) SE 6 SE 6 E 12
Wind 20ft/late(mph) SE 6 SE 6 E 12
Mixing Hgt(ft-agl/msl)3720 4280
Transport Wnd (mph) SE 9 E 17
Vent Rate (kt-ft) 29760 64200
Dispersion 5 5
DSI 5 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ023-240730-
Central Mountain Range-
323 AM AST Sat Aug 23 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 60 40 40
Temp (24h trend) 85 (+3) 69 (-3) 89
RH % (24h trend) 69 (-4) 98 (0) 64
Wind 20ft/early(mph) SE 6 Lgt/Var E 10
Wind 20ft/late(mph) SE 6 Lgt/Var E 10
Mixing Hgt(ft-agl/msl)5130 6820
Transport Wnd (mph) SE 8 E 9
Vent Rate (kt-ft) 35910 54560
Dispersion 5 5
DSI 5 1 5
RH Recovery Excellent
Remarks...None.
$$
PRZ024-240730-
Cayey Mountain Range-
323 AM AST Sat Aug 23 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Showers
Chance Precip (%) 60 40 20
Temp (24h trend) 85 (+2) 71 (-1) 86
RH % (24h trend) 71 (-2) 100 (0) 67
Wind 20ft/early(mph) SE 5 SE 6 E 11
Wind 20ft/late(mph) SE 5 SE 6 E 11
Mixing Hgt(ft-agl/msl)3590 4600
Transport Wnd (mph) SE 9 E 18
Vent Rate (kt-ft) 28720 73600
Dispersion 5 5
DSI 5 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ025-240730-
Vieques-
323 AM AST Sat Aug 23 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Showers
Chance Precip (%) 60 50 20
Temp (24h trend) 88 (0) 78 (+1) 90
RH % (24h trend) 64 (-4) 96 (-1) 62
Wind 20ft/early(mph) SE 6 E 12 E 18 G22
Wind 20ft/late(mph) SE 6 E 12 E 18 G22
Mixing Hgt(ft-agl/msl)2830 3200
Transport Wnd (mph) SE 8 E 17
Vent Rate (kt-ft) 19810 48000
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-240730-
Culebra-
323 AM AST Sat Aug 23 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Showers
Chance Precip (%) 60 50 30
Temp (24h trend) 88 (-1) 79 (+1) 92
RH % (24h trend) 67 (-3) 97 (0) 62
Wind 20ft/early(mph) SE 6 E 12 E 17 G22
Wind 20ft/late(mph) SE 6 E 12 E 17 G22
Mixing Hgt(ft-agl/msl)2870 3080
Transport Wnd (mph) SE 8 E 23
Vent Rate (kt-ft) 20090 61600
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-240730-
Southwest Coastal Plains and Mona Island-
323 AM AST Sat Aug 23 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 20 10 10
Temp (24h trend) 89 (-1) 76 (-1) 92
RH % (24h trend) 59 (+6) 97 (+7) 54
Wind 20ft/early(mph) SE 14 G19 E 12 E 19 G24
Wind 20ft/late(mph) SE 14 G19 E 12 E 19 G24
Mixing Hgt(ft-agl/msl)4020 4160
Transport Wnd (mph) E 13 E 16
Vent Rate (kt-ft) 44220 58240
Dispersion 5 5
DSI 5 5 6
RH Recovery Excellent
Remarks...None.
$$
VIZ001-240730-
Saint Thomas and Saint John-
323 AM AST Sat Aug 23 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Showers Showers
Chance Precip (%) 60 40 20
Temp (24h trend) 87 (+2) 78 (0) 88
RH % (24h trend) 71 (-4) 98 (+3) 68
Wind 20ft/early(mph) SE 8 E 12 E 18 G22
Wind 20ft/late(mph) SE 8 E 12 E 18 G22
Mixing Hgt(ft-agl/msl)3000 3300
Transport Wnd (mph) SE 9 E 24
Vent Rate (kt-ft) 24000 69300
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-240730-
St Croix-
323 AM AST Sat Aug 23 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Mclear
Precip Type Tstms Showers Showers
Chance Precip (%) 60 40 10
Temp (24h trend) 88 (+1) 77 (-2) 90
RH % (24h trend) 70 (-3) 97 (+2) 66
Wind 20ft/early(mph) SE 9 E 12 E 17 G21
Wind 20ft/late(mph) SE 9 E 12 E 17 G21
Mixing Hgt(ft-agl/msl)4360 3890
Transport Wnd (mph) SE 12 E 21
Vent Rate (kt-ft) 43600 70020
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$