Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
956
FNCA52 TJSJ 280747
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
347 AM AST Sat Jun 28 2025
.DISCUSSION...
The lingering moisture will maintain RH above critical values.
However, they will drop near fire weather thresholds by this
afternoon, especially along the southern plains of PR. Winds will
be between 10 and 21 mph, with sea breezes. Therefore, we expect
a low/moderate fire danger threat for today.
PRZ014-290800-
Southeast Coastal Plains-
347 AM AST Sat Jun 28 2025
Today Tonight Sun
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 10 20 60
Temp (24h trend) 92 (+2) 74 (-1) 90
RH % (24h trend) 46 (-8) 91 (+5) 55
Wind 20ft/early(mph) E 18 G23 E 14 G18 E 16 G21
Wind 20ft/late(mph) E 18 G23 E 14 G18 E 16 G21
Mixing Hgt(ft-agl/msl)5270 3530
Transport Wnd (mph) E 16 E 17
Vent Rate (kt-ft) 73780 52950
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ015-290800-
Southern Hills-
347 AM AST Sat Jun 28 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 30 10 70
Temp (24h trend) 87 (+3) 70 (-2) 86
RH % (24h trend) 59 (-8) 98 (+5) 66
Wind 20ft/early(mph) E 13 E 12 E 14
Wind 20ft/late(mph) E 13 E 12 E 14
Mixing Hgt(ft-agl/msl)5890 4340
Transport Wnd (mph) E 15 E 17
Vent Rate (kt-ft) 76570 65100
Dispersion 5 5
DSI 5 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ016-290800-
North Coastal Plains-
347 AM AST Sat Jun 28 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 30 30 40
Temp (24h trend) 89 (+2) 74 (-1) 89
RH % (24h trend) 64 (-5) 99 (+4) 68
Wind 20ft/early(mph) E 21 G23 E 19 G22 E 17 G20
Wind 20ft/late(mph) E 21 G23 E 19 G22 E 17 G20
Mixing Hgt(ft-agl/msl)4970 3980
Transport Wnd (mph) E 16 E 18
Vent Rate (kt-ft) 69580 63680
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ017-290800-
Northern Hills-
347 AM AST Sat Jun 28 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 50 20 50
Temp (24h trend) 86 (+2) 71 (-1) 86
RH % (24h trend) 68 (-4) 100 (+1) 72
Wind 20ft/early(mph) E 18 E 17 E 16
Wind 20ft/late(mph) E 18 E 17 E 16
Mixing Hgt(ft-agl/msl)5810 4740
Transport Wnd (mph) E 13 E 15
Vent Rate (kt-ft) 63910 61620
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ018-290800-
West Coast-
347 AM AST Sat Jun 28 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 70 10 70
Temp (24h trend) 90 (+1) 71 (-1) 90
RH % (24h trend) 60 (-5) 99 (+3) 64
Wind 20ft/early(mph) E 13 E 14 E 14
Wind 20ft/late(mph) E 13 E 14 E 14
Mixing Hgt(ft-agl/msl)4890 3690
Transport Wnd (mph) E 9 E 13
Vent Rate (kt-ft) 39120 40590
Dispersion 5 5
DSI 6 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ019-290800-
Eastern Interior-
347 AM AST Sat Jun 28 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Showers Tstms Tstms
Chance Precip (%) 20 50 70
Temp (24h trend) 88 (+4) 71 (-2) 86
RH % (24h trend) 64 (-5) 99 (+4) 70
Wind 20ft/early(mph) E 12 E 13 E 16
Wind 20ft/late(mph) E 12 E 13 E 16
Mixing Hgt(ft-agl/msl)6080 3110
Transport Wnd (mph) E 15 E 18
Vent Rate (kt-ft) 79040 49760
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ022-290800-
Luquillo Mountain Range-
347 AM AST Sat Jun 28 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Showers Tstms Tstms
Chance Precip (%) 30 60 70
Temp (24h trend) 83 (+5) 69 (-2) 82
RH % (24h trend) 73 (-7) 100 (+1) 78
Wind 20ft/early(mph) E 11 E 10 E 13
Wind 20ft/late(mph) E 11 E 10 E 13
Mixing Hgt(ft-agl/msl)3750 3050
Transport Wnd (mph) E 16 E 22
Vent Rate (kt-ft) 52500 57950
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ023-290800-
Central Mountain Range-
347 AM AST Sat Jun 28 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 60 10 80
Temp (24h trend) 85 (+4) 68 (-2) 85
RH % (24h trend) 66 (-9) 100 (+1) 71
Wind 20ft/early(mph) E 11 E 11 E 10
Wind 20ft/late(mph) E 11 E 11 E 10
Mixing Hgt(ft-agl/msl)6860 5160
Transport Wnd (mph) E 9 E 14
Vent Rate (kt-ft) 54880 61920
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ024-290800-
Cayey Mountain Range-
347 AM AST Sat Jun 28 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Showers Tstms Tstms
Chance Precip (%) 20 50 70
Temp (24h trend) 83 (+3) 70 (-1) 81
RH % (24h trend) 69 (-5) 100 (+1) 78
Wind 20ft/early(mph) E 11 E 10 E 12
Wind 20ft/late(mph) E 11 E 10 E 12
Mixing Hgt(ft-agl/msl)4760 2610
Transport Wnd (mph) E 15 E 21
Vent Rate (kt-ft) 61880 46980
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ025-290800-
Vieques-
347 AM AST Sat Jun 28 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Tstms Tstms
Chance Precip (%) 40 60 70
Temp (24h trend) 88 (+1) 76 (-1) 88
RH % (24h trend) 63 (0) 94 (+5) 63
Wind 20ft/early(mph) E 16 G19 E 18 G22 E 19 G23
Wind 20ft/late(mph) E 16 G19 E 18 G22 E 19 G23
Mixing Hgt(ft-agl/msl)3360 3490
Transport Wnd (mph) E 20 E 23
Vent Rate (kt-ft) 57120 69800
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-290800-
Culebra-
347 AM AST Sat Jun 28 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Showers Tstms Tstms
Chance Precip (%) 40 60 70
Temp (24h trend) 90 (+2) 77 (-1) 90
RH % (24h trend) 64 (-2) 95 (+5) 62
Wind 20ft/early(mph) E 16 G20 E 18 G22 E 19 G24
Wind 20ft/late(mph) E 16 G20 E 18 G22 E 19 G24
Mixing Hgt(ft-agl/msl)3260 3500
Transport Wnd (mph) E 20 E 24
Vent Rate (kt-ft) 55420 73500
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-290800-
Southwest Coastal Plains and Mona Island-
347 AM AST Sat Jun 28 2025
Today Tonight Sun
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 40 10 60
Temp (24h trend) 92 (+2) 74 (-1) 91
RH % (24h trend) 51 (-4) 89 (+2) 54
Wind 20ft/early(mph) E 19 G25 E 12 E 20 G27
Wind 20ft/late(mph) E 19 G25 E 12 E 20 G27
Mixing Hgt(ft-agl/msl)5510 4020
Transport Wnd (mph) E 16 E 20
Vent Rate (kt-ft) 77140 68340
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
VIZ001-290800-
Saint Thomas and Saint John-
347 AM AST Sat Jun 28 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Tstms Tstms
Chance Precip (%) 50 60 50
Temp (24h trend) 86 (+1) 75 (-3) 86
RH % (24h trend) 69 (+2) 98 (+7) 67
Wind 20ft/early(mph) E 16 G20 E 19 G23 E 20 G24
Wind 20ft/late(mph) E 16 G20 E 19 G23 E 20 G24
Mixing Hgt(ft-agl/msl)3220 3340
Transport Wnd (mph) E 21 E 28
Vent Rate (kt-ft) 57960 80160
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-290800-
St Croix-
347 AM AST Sat Jun 28 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Tstms Tstms
Chance Precip (%) 50 60 70
Temp (24h trend) 87 (+1) 76 (-2) 87
RH % (24h trend) 68 (+2) 94 (+6) 66
Wind 20ft/early(mph) E 16 G19 E 18 G22 E 18 G22
Wind 20ft/late(mph) E 16 G19 E 18 G22 E 18 G22
Mixing Hgt(ft-agl/msl)3690 4060
Transport Wnd (mph) E 22 E 26
Vent Rate (kt-ft) 70110 93380
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$