Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
249
FNCA52 TJSJ 011930
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
330 PM AST Thu Oct 1 2026
.DISCUSSION...
No fire danger is expected today.
PRZ014-020800-
Southeast Coastal Plains-
330 PM AST Thu Oct 1 2026
Tonight Fri Fri Night Sat
Cloud Cover Pcldy Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers Showers
Chance Precip (%) 20 40 20 40
Temp (24h trend) 74 (-3) 90 (0) 74 91
RH % (24h trend) 90 (+4) 47 (-11) 89 51
Wind 20ft/early(mph) E 10 E 13 G21 E 11 E 11
Wind 20ft/late(mph) NE 9 E 16 G23 NE 8 E 13
Mixing Hgt(ft-agl/msl) 5240 5120
Transport Wnd (mph) E 17 E 14
Vent Rate (kt-ft) 78600 61440
Dispersion 5 5
DSI 3 6 4 6
RH Recovery Excellent Excellent
Remarks...None.
$$
PRZ015-020800-
Southern Hills-
330 PM AST Thu Oct 1 2026
Tonight Fri Fri Night Sat
Cloud Cover Pcldy Pcldy Mclear Pcldy
Precip Type Showers Showers Showers Tstms
Chance Precip (%) 20 50 10 50
Temp (24h trend) 71 (-3) 88 (+2) 71 89
RH % (24h trend) 97 (+6) 61 (-6) 96 60
Wind 20ft/early(mph) E 10 E 12 E 10 E 10
Wind 20ft/late(mph) E 10 SE 12 E 10 E 11
Mixing Hgt(ft-agl/msl) 5710 5500
Transport Wnd (mph) E 15 E 12
Vent Rate (kt-ft) 74230 55000
Dispersion 5 5
DSI 3 6 3 6
RH Recovery Excellent Excellent
Remarks...None.
$$
PRZ016-020800-
North Coastal Plains-
330 PM AST Thu Oct 1 2026
Tonight Fri Fri Night Sat
Cloud Cover Pcldy Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers Tstms
Chance Precip (%) 30 60 20 40
Temp (24h trend) 73 (-4) 91 (0) 73 93
RH % (24h trend) 95 (+4) 60 (-5) 96 58
Wind 20ft/early(mph) E 14 E 14 E 13 E 11
Wind 20ft/late(mph) SE 9 E 17 E 10 E 17
Mixing Hgt(ft-agl/msl) 5070 5050
Transport Wnd (mph) E 16 E 13
Vent Rate (kt-ft) 70980 55550
Dispersion 5 5
DSI 4 6 4 6
RH Recovery Excellent Excellent
Remarks...None.
$$
PRZ017-020800-
Northern Hills-
330 PM AST Thu Oct 1 2026
Tonight Fri Fri Night Sat
Cloud Cover Mclear Pcldy Mclear Pcldy
Precip Type Showers Tstms Showers Tstms
Chance Precip (%) 30 70 10 50
Temp (24h trend) 72 (-2) 90 (+1) 71 91
RH % (24h trend) 96 (+3) 62 (-3) 96 61
Wind 20ft/early(mph) E 12 E 12 SE 11 E 9
Wind 20ft/late(mph) E 6 E 14 SE 6 E 13
Mixing Hgt(ft-agl/msl) 5410 5320
Transport Wnd (mph) E 14 E 10
Vent Rate (kt-ft) 64920 47880
Dispersion 5 5
DSI 2 6 2 6
RH Recovery Excellent Excellent
Remarks...None.
$$
PRZ018-020800-
West Coast-
330 PM AST Thu Oct 1 2026
Tonight Fri Fri Night Sat
Cloud Cover Mclear Pcldy Mclear Pcldy
Precip Type Showers Tstms None Tstms
Chance Precip (%) 20 70 0 60
Temp (24h trend) 74 (-1) 92 (0) 74 93
RH % (24h trend) 95 (+4) 62 (-4) 95 60
Wind 20ft/early(mph) E 11 E 12 E 13 E 11
Wind 20ft/late(mph) E 10 SE 13 E 10 E 12
Mixing Hgt(ft-agl/msl) 4710 4210
Transport Wnd (mph) E 12 E 10
Vent Rate (kt-ft) 47100 37890
Dispersion 5 5
DSI 3 6 4 5
RH Recovery Excellent Excellent
Remarks...None.
$$
PRZ019-020800-
Eastern Interior-
330 PM AST Thu Oct 1 2026
Tonight Fri Fri Night Sat
Cloud Cover Pcldy Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers Tstms
Chance Precip (%) 50 60 20 50
Temp (24h trend) 72 (-3) 90 (+2) 72 90
RH % (24h trend) 96 (+3) 60 (-5) 96 59
Wind 20ft/early(mph) E 12 E 12 E 12 E 10
Wind 20ft/late(mph) E 11 E 12 E 11 E 12
Mixing Hgt(ft-agl/msl) 6140 6050
Transport Wnd (mph) E 15 E 13
Vent Rate (kt-ft) 79820 66550
Dispersion 5 5
DSI 4 6 4 6
RH Recovery Excellent Excellent
Remarks...None.
$$
PRZ022-020800-
Luquillo Mountain Range-
330 PM AST Thu Oct 1 2026
Tonight Fri Fri Night Sat
Cloud Cover Pcldy Mcldy Pcldy Pcldy
Precip Type Showers Showers Showers Tstms
Chance Precip (%) 50 60 40 50
Temp (24h trend) 70 (-4) 85 (+2) 70 86
RH % (24h trend) 99 (+3) 63 (-7) 98 61
Wind 20ft/early(mph) E 9 E 10 E 9 E 9
Wind 20ft/late(mph) E 9 E 11 E 9 E 11
Mixing Hgt(ft-agl/msl) 4610 4240
Transport Wnd (mph) E 16 E 13
Vent Rate (kt-ft) 64540 46640
Dispersion 5 5
DSI 5 6 5 6
RH Recovery Excellent Excellent
Remarks...None.
$$
PRZ023-020800-
Central Mountain Range-
330 PM AST Thu Oct 1 2026
Tonight Fri Fri Night Sat
Cloud Cover Mclear Pcldy Mclear Pcldy
Precip Type Showers Tstms Showers Tstms
Chance Precip (%) 30 70 10 60
Temp (24h trend) 69 (-3) 88 (+4) 68 88
RH % (24h trend) 97 (+4) 64 (-7) 97 62
Wind 20ft/early(mph) E 6 E 9 E 6 E 8
Wind 20ft/late(mph) E 5 SE 10 E 5 E 9
Mixing Hgt(ft-agl/msl) 5980 5830
Transport Wnd (mph) E 12 E 8
Vent Rate (kt-ft) 59800 40810
Dispersion 5 5
DSI 2 5 2 5
RH Recovery Excellent Excellent
Remarks...None.
$$
PRZ024-020800-
Cayey Mountain Range-
330 PM AST Thu Oct 1 2026
Tonight Fri Fri Night Sat
Cloud Cover Pcldy Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers Tstms
Chance Precip (%) 50 50 30 50
Temp (24h trend) 70 (-3) 85 (+1) 70 86
RH % (24h trend) 99 (+2) 64 (-6) 99 62
Wind 20ft/early(mph) E 9 E 10 E 9 E 9
Wind 20ft/late(mph) E 8 E 11 E 8 E 10
Mixing Hgt(ft-agl/msl) 5250 4980
Transport Wnd (mph) E 16 E 14
Vent Rate (kt-ft) 73500 59760
Dispersion 5 5
DSI 4 6 4 6
RH Recovery Excellent Excellent
Remarks...None.
$$
PRZ025-020800-
Vieques-
330 PM AST Thu Oct 1 2026
Tonight Fri Fri Night Sat
Cloud Cover Pcldy Mcldy Pcldy Pcldy
Precip Type Showers Showers Showers Showers
Chance Precip (%) 50 60 40 50
Temp (24h trend) 78 (-2) 89 (0) 78 90
RH % (24h trend) 87 (+2) 59 (-3) 86 57
Wind 20ft/early(mph) E 14 E 13 E 14 E 12
Wind 20ft/late(mph) E 14 E 14 E 13 E 13
Mixing Hgt(ft-agl/msl) 3600 3640
Transport Wnd (mph) E 18 E 15
Vent Rate (kt-ft) 57600 47320
Dispersion 5 5
DSI 6 6 6 6
RH Recovery Excellent Excellent
Remarks...None.
$$
PRZ026-020800-
Culebra-
330 PM AST Thu Oct 1 2026
Tonight Fri Fri Night Sat
Cloud Cover Pcldy Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers Showers
Chance Precip (%) 40 50 40 50
Temp (24h trend) 79 (-2) 89 (-1) 79 92
RH % (24h trend) 87 (+3) 62 (-3) 85 56
Wind 20ft/early(mph) E 14 E 13 E 14 E 12
Wind 20ft/late(mph) E 14 E 13 E 14 E 12
Mixing Hgt(ft-agl/msl) 3580 3580
Transport Wnd (mph) E 17 E 16
Vent Rate (kt-ft) 53700 50120
Dispersion 5 5
DSI 6 6 6 6
RH Recovery Excellent Excellent
Remarks...None.
$$
PRZ027-020800-
Southwest Coastal Plains and Mona Island-
330 PM AST Thu Oct 1 2026
Tonight Fri Fri Night Sat
Cloud Cover Mclear Pcldy Mclear Pcldy
Precip Type Showers Showers Showers Tstms
Chance Precip (%) 10 40 10 50
Temp (24h trend) 75 (-2) 92 (+1) 75 93
RH % (24h trend) 89 (+5) 50 (-7) 88 51
Wind 20ft/early(mph) E 13 G23 E 16 G23 E 14 E 13
Wind 20ft/late(mph) E 14 SE 16 G25 E 14 SE 14 G23
Mixing Hgt(ft-agl/msl) 4900 4540
Transport Wnd (mph) E 17 E 15
Vent Rate (kt-ft) 73500 59020
Dispersion 5 5
DSI 4 6 4 6
RH Recovery Excellent Excellent
Remarks...None.
$$
VIZ001-020800-
Saint Thomas and Saint John-
330 PM AST Thu Oct 1 2026
Tonight Fri Fri Night Sat
Cloud Cover Pcldy Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers Showers
Chance Precip (%) 30 40 40 50
Temp (24h trend) 77 (-3) 87 (0) 77 88
RH % (24h trend) 88 (+3) 63 (-5) 87 61
Wind 20ft/early(mph) E 16 E 13 E 14 E 12
Wind 20ft/late(mph) E 16 E 13 E 13 E 13
Mixing Hgt(ft-agl/msl) 3610 3500
Transport Wnd (mph) E 18 E 17
Vent Rate (kt-ft) 57760 52500
Dispersion 5 5
DSI 6 6 6 6
RH Recovery Excellent Excellent
Remarks...None.
$$
VIZ002-020800-
St Croix-
330 PM AST Thu Oct 1 2026
Tonight Fri Fri Night Sat
Cloud Cover Pcldy Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers Showers
Chance Precip (%) 40 40 40 50
Temp (24h trend) 78 (-2) 89 (0) 78 91
RH % (24h trend) 88 (0) 63 (-4) 89 61
Wind 20ft/early(mph) E 13 E 13 E 14 E 12
Wind 20ft/late(mph) E 13 E 13 E 13 E 13
Mixing Hgt(ft-agl/msl) 4760 4400
Transport Wnd (mph) E 17 E 16
Vent Rate (kt-ft) 71400 61600
Dispersion 5 5
DSI 6 6 6 6
RH Recovery Excellent Excellent
Remarks...None.
$$