Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
702
FNCA52 TJSJ 150903
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
503 AM AST Tue Jul 15 2025
.DISCUSSION...
A tropical wave will increase shower activity in general across
the islands today. Relative humidities are expected to remain just
above critical fire weather levels, however, stronger wind speeds
are expected across most coastal areas of southern and
northwestern Puerto Rico. The fire danger is expected to remain
low due to the expected increase in moisture and cloudiness this
afternoon.
PRZ014-160915-
Southeast Coastal Plains-
503 AM AST Tue Jul 15 2025
Today Tonight Wed
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 10 10 40
Temp (24h trend) 93 (+4) 75 (0) 92
RH % (24h trend) 53 (-9) 95 (+8) 55
Wind 20ft/early(mph) E 17 G22 E 16 G20 E 20 G27
Wind 20ft/late(mph) E 17 G22 E 16 G20 E 20 G27
Mixing Hgt(ft-agl/msl)5180 5500
Transport Wnd (mph) E 17 E 18
Vent Rate (kt-ft) 77700 88000
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ015-160915-
Southern Hills-
503 AM AST Tue Jul 15 2025
Today Tonight Wed
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 20 10 50
Temp (24h trend) 88 (+5) 71 (-1) 87
RH % (24h trend) 59 (-9) 99 (+8) 63
Wind 20ft/early(mph) E 12 E 13 E 16
Wind 20ft/late(mph) E 12 E 13 E 16
Mixing Hgt(ft-agl/msl)5890 6220
Transport Wnd (mph) E 17 E 17
Vent Rate (kt-ft) 88350 93300
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ016-160915-
North Coastal Plains-
503 AM AST Tue Jul 15 2025
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 60 30 60
Temp (24h trend) 89 (0) 75 (0) 89
RH % (24h trend) 66 (+2) 99 (+6) 66
Wind 20ft/early(mph) E 23 E 20 G23 E 19 G22
Wind 20ft/late(mph) E 23 E 20 G23 E 19 G22
Mixing Hgt(ft-agl/msl)5080 4390
Transport Wnd (mph) E 17 E 22
Vent Rate (kt-ft) 76200 83410
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ017-160915-
Northern Hills-
503 AM AST Tue Jul 15 2025
Today Tonight Wed
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 60 10 50
Temp (24h trend) 87 (+1) 72 (0) 86
RH % (24h trend) 67 (+1) 100 (+4) 72
Wind 20ft/early(mph) E 20 E 18 E 18
Wind 20ft/late(mph) E 20 E 18 E 18
Mixing Hgt(ft-agl/msl)6490 5510
Transport Wnd (mph) E 15 E 20
Vent Rate (kt-ft) 84370 93670
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ018-160915-
West Coast-
503 AM AST Tue Jul 15 2025
Today Tonight Wed
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 30 20 80
Temp (24h trend) 91 (+2) 72 (0) 91
RH % (24h trend) 58 (-7) 99 (+4) 63
Wind 20ft/early(mph) E 13 E 14 E 16
Wind 20ft/late(mph) E 13 E 14 E 16
Mixing Hgt(ft-agl/msl)4990 4980
Transport Wnd (mph) E 12 E 13
Vent Rate (kt-ft) 49900 54780
Dispersion 5 5
DSI 6 4 5
RH Recovery Excellent
Remarks...None.
$$
PRZ019-160915-
Eastern Interior-
503 AM AST Tue Jul 15 2025
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 40 30 60
Temp (24h trend) 88 (+2) 72 (-2) 87
RH % (24h trend) 66 (0) 100 (+7) 68
Wind 20ft/early(mph) E 16 E 14 E 16
Wind 20ft/late(mph) E 16 E 14 E 16
Mixing Hgt(ft-agl/msl)6230 5300
Transport Wnd (mph) E 17 E 18
Vent Rate (kt-ft) 93450 84800
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ022-160915-
Luquillo Mountain Range-
503 AM AST Tue Jul 15 2025
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 60 60 60
Temp (24h trend) 83 (+3) 70 (-2) 83
RH % (24h trend) 74 (-2) 100 (+3) 77
Wind 20ft/early(mph) E 12 E 12 E 13
Wind 20ft/late(mph) E 12 E 12 E 13
Mixing Hgt(ft-agl/msl)4260 3450
Transport Wnd (mph) E 17 E 20
Vent Rate (kt-ft) 63900 58650
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ023-160915-
Central Mountain Range-
503 AM AST Tue Jul 15 2025
Today Tonight Wed
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 50 10 60
Temp (24h trend) 86 (+5) 68 (-1) 85
RH % (24h trend) 65 (-7) 100 (+4) 71
Wind 20ft/early(mph) E 11 E 10 E 12
Wind 20ft/late(mph) E 11 E 10 E 12
Mixing Hgt(ft-agl/msl)7760 6600
Transport Wnd (mph) E 13 E 16
Vent Rate (kt-ft) 85360 92400
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ024-160915-
Cayey Mountain Range-
503 AM AST Tue Jul 15 2025
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 30 20 60
Temp (24h trend) 84 (+3) 71 (0) 83
RH % (24h trend) 71 (-1) 100 (+2) 73
Wind 20ft/early(mph) E 11 E 11 E 12
Wind 20ft/late(mph) E 11 E 11 E 12
Mixing Hgt(ft-agl/msl)5080 4380
Transport Wnd (mph) E 17 E 20
Vent Rate (kt-ft) 76200 74460
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ025-160915-
Vieques-
503 AM AST Tue Jul 15 2025
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Showers Tstms Tstms
Chance Precip (%) 50 60 60
Temp (24h trend) 89 (+2) 77 (0) 89
RH % (24h trend) 61 (0) 93 (+7) 62
Wind 20ft/early(mph) E 18 G22 E 19 G23 E 17 G22
Wind 20ft/late(mph) E 18 G22 E 19 G23 E 17 G22
Mixing Hgt(ft-agl/msl)3360 2880
Transport Wnd (mph) E 17 E 23
Vent Rate (kt-ft) 50400 57600
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-160915-
Culebra-
503 AM AST Tue Jul 15 2025
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Showers Tstms Tstms
Chance Precip (%) 50 60 60
Temp (24h trend) 91 (+3) 78 (-1) 90
RH % (24h trend) 61 (-3) 93 (+6) 62
Wind 20ft/early(mph) E 18 G22 E 19 G23 E 18 G22
Wind 20ft/late(mph) E 18 G22 E 19 G23 E 18 G22
Mixing Hgt(ft-agl/msl)3280 3110
Transport Wnd (mph) E 21 E 24
Vent Rate (kt-ft) 59040 65310
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-160915-
Southwest Coastal Plains and Mona Island-
503 AM AST Tue Jul 15 2025
Today Tonight Wed
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 10 10 50
Temp (24h trend) 92 (+3) 75 (-1) 93
RH % (24h trend) 54 (-7) 90 (+7) 56
Wind 20ft/early(mph) SE 19 G24 E 20 G25 E 23 G29
Wind 20ft/late(mph) SE 19 G24 E 20 G25 E 23 G29
Mixing Hgt(ft-agl/msl)5040 5470
Transport Wnd (mph) E 18 E 14
Vent Rate (kt-ft) 80640 65640
Dispersion 5 5
DSI 6 4 5
RH Recovery Excellent
Remarks...None.
$$
VIZ001-160915-
Saint Thomas and Saint John-
503 AM AST Tue Jul 15 2025
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 50 50 60
Temp (24h trend) 88 (+3) 76 (-2) 87
RH % (24h trend) 67 (+1) 97 (+7) 67
Wind 20ft/early(mph) E 18 G23 E 19 G24 E 18 G22
Wind 20ft/late(mph) E 18 G23 E 19 G24 E 18 G22
Mixing Hgt(ft-agl/msl)3230 3050
Transport Wnd (mph) E 24 E 24
Vent Rate (kt-ft) 67830 64050
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-160915-
St Croix-
503 AM AST Tue Jul 15 2025
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 40 50 60
Temp (24h trend) 89 (+3) 77 (-1) 89
RH % (24h trend) 65 (-1) 94 (+5) 66
Wind 20ft/early(mph) E 16 G20 E 18 G23 E 16 G20
Wind 20ft/late(mph) E 16 G20 E 18 G23 E 16 G20
Mixing Hgt(ft-agl/msl)4550 4190
Transport Wnd (mph) E 21 E 22
Vent Rate (kt-ft) 81900 79610
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$