Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
313
FNCA52 TJSJ 290832
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
432 AM AST Sat Nov 29 2025
.DISCUSSION...
We forecast periods of showers today. RH values will remain above
threshold criteria over the fire weather hor spots. Winds will be
mainly from the east at around 12 to 20 mph, with higher gusts
and sea breeze variations. Low risk of fire weather today.
PRZ014-300845-
Southeast Coastal Plains-
432 AM AST Sat Nov 29 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 20 20 10
Temp (24h trend) 88 (+3) 71 (-1) 88
RH % (24h trend) 50 (-19) 88 (-3) 49
Wind 20ft/early(mph) E 18 G23 NE 11 E 17 G23
Wind 20ft/late(mph) E 18 G23 NE 11 E 17 G23
Mixing Hgt(ft-agl/msl)5040 5670
Transport Wnd (mph) E 18 E 18
Vent Rate (kt-ft) 80640 90720
Dispersion 5 5
DSI 5 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ015-300845-
Southern Hills-
432 AM AST Sat Nov 29 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 30 10 20
Temp (24h trend) 85 (+5) 67 (-3) 84
RH % (24h trend) 60 (-14) 95 (+1) 61
Wind 20ft/early(mph) E 13 NE 12 E 14
Wind 20ft/late(mph) E 13 NE 12 E 14
Mixing Hgt(ft-agl/msl)5340 5930
Transport Wnd (mph) E 17 E 18
Vent Rate (kt-ft) 80100 94880
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ016-300845-
North Coastal Plains-
432 AM AST Sat Nov 29 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 30 50 40
Temp (24h trend) 88 (+3) 71 (-1) 86
RH % (24h trend) 62 (-9) 95 (-1) 64
Wind 20ft/early(mph) E 18 E 17 G19 E 17 G21
Wind 20ft/late(mph) E 18 E 17 G19 E 17 G21
Mixing Hgt(ft-agl/msl)5120 5080
Transport Wnd (mph) E 20 E 21
Vent Rate (kt-ft) 87040 91440
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ017-300845-
Northern Hills-
432 AM AST Sat Nov 29 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 30 40 30
Temp (24h trend) 86 (+3) 69 (-1) 84
RH % (24h trend) 62 (-9) 95 (-1) 66
Wind 20ft/early(mph) E 17 E 14 E 16
Wind 20ft/late(mph) E 17 E 14 E 16
Mixing Hgt(ft-agl/msl)5260 5480
Transport Wnd (mph) E 16 E 18
Vent Rate (kt-ft) 73640 87680
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ018-300845-
West Coast-
432 AM AST Sat Nov 29 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Mclear
Precip Type Tstms Showers Tstms
Chance Precip (%) 60 30 60
Temp (24h trend) 88 (+2) 69 (-1) 87
RH % (24h trend) 62 (-8) 94 (-2) 62
Wind 20ft/early(mph) E 13 E 16 E 14
Wind 20ft/late(mph) E 13 E 16 E 14
Mixing Hgt(ft-agl/msl)4320 4790
Transport Wnd (mph) E 10 E 15
Vent Rate (kt-ft) 38880 62270
Dispersion 5 5
DSI 5 4 5
RH Recovery Excellent
Remarks...None.
$$
PRZ019-300845-
Eastern Interior-
432 AM AST Sat Nov 29 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 50 30
Temp (24h trend) 85 (+3) 69 (-2) 86
RH % (24h trend) 63 (-11) 97 (-1) 63
Wind 20ft/early(mph) E 14 E 14 E 14
Wind 20ft/late(mph) E 14 E 14 E 14
Mixing Hgt(ft-agl/msl)5270 5460
Transport Wnd (mph) E 17 E 18
Vent Rate (kt-ft) 79050 87360
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ022-300845-
Luquillo Mountain Range-
432 AM AST Sat Nov 29 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 50 50
Temp (24h trend) 81 (+4) 66 (-3) 81
RH % (24h trend) 69 (-12) 99 (0) 69
Wind 20ft/early(mph) E 12 E 10 E 12
Wind 20ft/late(mph) E 12 E 10 E 12
Mixing Hgt(ft-agl/msl)4660 4720
Transport Wnd (mph) E 20 E 20
Vent Rate (kt-ft) 79220 80240
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ023-300845-
Central Mountain Range-
432 AM AST Sat Nov 29 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Mclear
Precip Type Tstms Showers Showers
Chance Precip (%) 50 10 40
Temp (24h trend) 84 (+5) 65 (-3) 81
RH % (24h trend) 64 (-10) 96 (0) 66
Wind 20ft/early(mph) E 10 E 11 E 12
Wind 20ft/late(mph) E 10 E 11 E 12
Mixing Hgt(ft-agl/msl)5870 6350
Transport Wnd (mph) E 12 E 14
Vent Rate (kt-ft) 58700 76200
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ024-300845-
Cayey Mountain Range-
432 AM AST Sat Nov 29 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 30 40 30
Temp (24h trend) 81 (+4) 67 (-1) 80
RH % (24h trend) 68 (-11) 100 (0) 68
Wind 20ft/early(mph) E 12 NE 10 E 12
Wind 20ft/late(mph) E 12 NE 10 E 12
Mixing Hgt(ft-agl/msl)4870 5020
Transport Wnd (mph) E 20 E 20
Vent Rate (kt-ft) 82790 85340
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ025-300845-
Vieques-
432 AM AST Sat Nov 29 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 30 40
Temp (24h trend) 86 (+1) 73 (-1) 88
RH % (24h trend) 60 (-7) 92 (-3) 58
Wind 20ft/early(mph) E 17 G22 E 18 G22 E 16 G20
Wind 20ft/late(mph) E 17 G22 E 18 G22 E 16 G20
Mixing Hgt(ft-agl/msl)3850 4180
Transport Wnd (mph) E 23 E 23
Vent Rate (kt-ft) 77000 83600
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-300845-
Culebra-
432 AM AST Sat Nov 29 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 40 50
Temp (24h trend) 88 (+3) 74 (-2) 88
RH % (24h trend) 58 (-8) 93 (+1) 58
Wind 20ft/early(mph) E 17 G22 E 18 G22 E 16 G21
Wind 20ft/late(mph) E 17 G22 E 18 G22 E 16 G21
Mixing Hgt(ft-agl/msl)3890 4220
Transport Wnd (mph) E 23 E 23
Vent Rate (kt-ft) 77800 84400
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-300845-
Southwest Coastal Plains and Mona Island-
432 AM AST Sat Nov 29 2025
Today Tonight Sun
Cloud Cover Mclear Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 40 10 30
Temp (24h trend) 90 (+4) 70 (-3) 89
RH % (24h trend) 50 (-17) 88 (0) 49
Wind 20ft/early(mph) E 19 G25 E 11 E 19 G25
Wind 20ft/late(mph) E 19 G25 E 11 E 19 G25
Mixing Hgt(ft-agl/msl)5180 5790
Transport Wnd (mph) E 16 E 15
Vent Rate (kt-ft) 72520 75270
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
VIZ001-300845-
Saint Thomas and Saint John-
432 AM AST Sat Nov 29 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 30 30 30
Temp (24h trend) 86 (+2) 72 (-4) 85
RH % (24h trend) 62 (-7) 97 (+4) 65
Wind 20ft/early(mph) E 17 G21 E 19 G23 E 17 G22
Wind 20ft/late(mph) E 17 G21 E 19 G23 E 17 G22
Mixing Hgt(ft-agl/msl)4060 4250
Transport Wnd (mph) E 23 E 24
Vent Rate (kt-ft) 81200 89250
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-300845-
St Croix-
432 AM AST Sat Nov 29 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 30 30 30
Temp (24h trend) 87 (+2) 73 (-3) 87
RH % (24h trend) 62 (-8) 92 (+1) 62
Wind 20ft/early(mph) E 17 G21 E 17 G20 E 16 G20
Wind 20ft/late(mph) E 17 G21 E 17 G20 E 16 G20
Mixing Hgt(ft-agl/msl)4530 4540
Transport Wnd (mph) E 23 E 23
Vent Rate (kt-ft) 90600 90800
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$