Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
019
FNCA52 TJSJ 080916
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
516 AM AST Tue Jul 8 2025
.DISCUSSION...
Periods of frequent passing showers will filter across the region
from time to time allowing RH values to almost reach fire danger
criteria. Nonetheless, breezy to locally windy easterly trade
winds will prevailed throughout the day, and dry soils and fuels
across the region will maintain the risk low.
PRZ014-090930-
Southeast Coastal Plains-
516 AM AST Tue Jul 8 2025
Today Tonight Wed
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 10 20
Temp (24h trend) 92 (+3) 73 (-2) 92
RH % (24h trend) 45 (-8) 89 (+4) 46
Wind 20ft/early(mph) E 18 G24 E 14 G19 E 19 G25
Wind 20ft/late(mph) E 18 G24 E 14 G19 E 19 G25
Mixing Hgt(ft-agl/msl)5880 5820
Transport Wnd (mph) E 22 E 23
Vent Rate (kt-ft) 111720 116400
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ015-090930-
Southern Hills-
516 AM AST Tue Jul 8 2025
Today Tonight Wed
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 10 20
Temp (24h trend) 88 (+4) 70 (-2) 88
RH % (24h trend) 55 (-10) 97 (+6) 57
Wind 20ft/early(mph) E 16 E 12 E 16
Wind 20ft/late(mph) E 16 E 12 E 16
Mixing Hgt(ft-agl/msl)6470 6260
Transport Wnd (mph) E 22 E 21
Vent Rate (kt-ft) 122930 112680
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ016-090930-
North Coastal Plains-
516 AM AST Tue Jul 8 2025
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Showers
Chance Precip (%) 60 30 40
Temp (24h trend) 90 (+2) 74 (-1) 90
RH % (24h trend) 60 (-7) 98 (+4) 62
Wind 20ft/early(mph) E 21 G23 E 18 G21 E 23 G25
Wind 20ft/late(mph) E 21 G23 E 18 G21 E 23 G25
Mixing Hgt(ft-agl/msl)6080 5890
Transport Wnd (mph) E 22 E 24
Vent Rate (kt-ft) 115520 123690
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ017-090930-
Northern Hills-
516 AM AST Tue Jul 8 2025
Today Tonight Wed
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 50 0 40
Temp (24h trend) 88 (+2) 71 (-1) 88
RH % (24h trend) 60 (-6) 99 (+3) 64
Wind 20ft/early(mph) E 19 E 17 E 20
Wind 20ft/late(mph) E 19 E 17 E 20
Mixing Hgt(ft-agl/msl)7500 6920
Transport Wnd (mph) E 18 E 20
Vent Rate (kt-ft) 120000 117640
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ018-090930-
West Coast-
516 AM AST Tue Jul 8 2025
Today Tonight Wed
Cloud Cover Pcldy Clear Pcldy
Precip Type Tstms None Tstms
Chance Precip (%) 50 0 40
Temp (24h trend) 91 (+2) 71 (-1) 91
RH % (24h trend) 55 (-9) 97 (+4) 59
Wind 20ft/early(mph) E 18 E 18 E 17 G19
Wind 20ft/late(mph) E 18 E 18 E 17 G19
Mixing Hgt(ft-agl/msl)4830 4850
Transport Wnd (mph) E 14 E 15
Vent Rate (kt-ft) 57960 63050
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ019-090930-
Eastern Interior-
516 AM AST Tue Jul 8 2025
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 60 50
Temp (24h trend) 88 (+2) 71 (-2) 88
RH % (24h trend) 61 (-5) 98 (+4) 63
Wind 20ft/early(mph) E 17 E 13 E 17
Wind 20ft/late(mph) E 17 E 13 E 17
Mixing Hgt(ft-agl/msl)6400 6190
Transport Wnd (mph) E 22 E 22
Vent Rate (kt-ft) 121600 117610
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ022-090930-
Luquillo Mountain Range-
516 AM AST Tue Jul 8 2025
Today Tonight Wed
Cloud Cover Mcldy Pcldy Mcldy
Precip Type Tstms Showers Showers
Chance Precip (%) 60 60 60
Temp (24h trend) 83 (+4) 69 (-2) 83
RH % (24h trend) 70 (-7) 100 (+2) 70
Wind 20ft/early(mph) E 14 G17 E 11 E 14 G17
Wind 20ft/late(mph) E 14 G17 E 11 E 14 G17
Mixing Hgt(ft-agl/msl)4200 4810
Transport Wnd (mph) E 22 E 23
Vent Rate (kt-ft) 79800 96200
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ023-090930-
Central Mountain Range-
516 AM AST Tue Jul 8 2025
Today Tonight Wed
Cloud Cover Pcldy Clear Mclear
Precip Type Tstms None Tstms
Chance Precip (%) 50 0 30
Temp (24h trend) 86 (+5) 67 (-3) 87
RH % (24h trend) 60 (-9) 99 (+3) 64
Wind 20ft/early(mph) E 12 E 12 E 13
Wind 20ft/late(mph) E 12 E 12 E 13
Mixing Hgt(ft-agl/msl)7920 7550
Transport Wnd (mph) E 16 E 15
Vent Rate (kt-ft) 110880 98150
Dispersion 5 5
DSI 6 2 6
RH Recovery Excellent
Remarks...None.
$$
PRZ024-090930-
Cayey Mountain Range-
516 AM AST Tue Jul 8 2025
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 50 50
Temp (24h trend) 83 (+2) 69 (-2) 83
RH % (24h trend) 67 (-5) 100 (+1) 67
Wind 20ft/early(mph) E 13 E 10 E 14
Wind 20ft/late(mph) E 13 E 10 E 14
Mixing Hgt(ft-agl/msl)5210 5430
Transport Wnd (mph) E 23 E 24
Vent Rate (kt-ft) 104200 114030
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ025-090930-
Vieques-
516 AM AST Tue Jul 8 2025
Today Tonight Wed
Cloud Cover Pcldy Mcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 60 60
Temp (24h trend) 88 (+1) 76 (-1) 88
RH % (24h trend) 59 (-5) 92 (+4) 60
Wind 20ft/early(mph) E 18 G23 E 17 G21 E 19 G23
Wind 20ft/late(mph) E 18 G23 E 17 G21 E 19 G23
Mixing Hgt(ft-agl/msl)3450 3920
Transport Wnd (mph) E 26 E 26
Vent Rate (kt-ft) 79350 90160
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-090930-
Culebra-
516 AM AST Tue Jul 8 2025
Today Tonight Wed
Cloud Cover Pcldy Mcldy Pcldy
Precip Type Tstms Showers Showers
Chance Precip (%) 60 60 50
Temp (24h trend) 90 (+2) 78 (0) 90
RH % (24h trend) 61 (-5) 93 (+4) 61
Wind 20ft/early(mph) E 18 G23 E 18 G22 E 19 G23
Wind 20ft/late(mph) E 18 G23 E 18 G22 E 19 G23
Mixing Hgt(ft-agl/msl)3410 4060
Transport Wnd (mph) E 25 E 26
Vent Rate (kt-ft) 75020 93380
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-090930-
Southwest Coastal Plains and Mona Island-
516 AM AST Tue Jul 8 2025
Today Tonight Wed
Cloud Cover Mclear Clear Mclear
Precip Type Showers None Showers
Chance Precip (%) 30 0 20
Temp (24h trend) 92 (+3) 74 (-2) 92
RH % (24h trend) 48 (-6) 84 (+1) 48
Wind 20ft/early(mph) SE 24 G30 E 23 G28 SE 24 G31
Wind 20ft/late(mph) SE 24 G30 E 23 G28 SE 24 G31
Mixing Hgt(ft-agl/msl)5640 5470
Transport Wnd (mph) E 24 E 24
Vent Rate (kt-ft) 118440 114870
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
VIZ001-090930-
Saint Thomas and Saint John-
516 AM AST Tue Jul 8 2025
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mclear
Precip Type Tstms Showers Showers
Chance Precip (%) 60 50 40
Temp (24h trend) 86 (+1) 75 (-2) 87
RH % (24h trend) 67 (-2) 96 (+6) 66
Wind 20ft/early(mph) E 18 G23 E 19 G23 E 19 G23
Wind 20ft/late(mph) E 18 G23 E 19 G23 E 19 G23
Mixing Hgt(ft-agl/msl)3370 3930
Transport Wnd (mph) E 25 E 29
Vent Rate (kt-ft) 74140 98250
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-090930-
St Croix-
516 AM AST Tue Jul 8 2025
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 50 50
Temp (24h trend) 87 (+1) 76 (-2) 88
RH % (24h trend) 64 (-3) 93 (+5) 63
Wind 20ft/early(mph) E 18 G22 E 17 G20 E 19 G23
Wind 20ft/late(mph) E 18 G22 E 17 G20 E 19 G23
Mixing Hgt(ft-agl/msl)4830 4500
Transport Wnd (mph) E 24 E 26
Vent Rate (kt-ft) 101430 103500
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$