Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
145
FNCA52 TJSJ 100916
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
516 AM AST Sun Aug 10 2025
.DISCUSSION...
Showers are expected to occasionally move over portions of the
USVI and eastern Puerto Rico in the morning, followed by afternoon
convective activity over northwestern Puerto Rico. RH values
may drop into the mid 50s across southern PR, but winds should remain
below 15 mph helping to limit the fire danger. At this time, the
fire danger remains low, however, we will continue to monitor the
conditions closely for any update.
PRZ014-110930-
Southeast Coastal Plains-
516 AM AST Sun Aug 10 2025
Today Tonight Mon
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 30 0 40
Temp (24h trend) 92 (+3) 74 (-1) 91
RH % (24h trend) 53 (-4) 89 (-1) 56
Wind 20ft/early(mph) SE 13 G19 E 12 E 17 G23
Wind 20ft/late(mph) SE 13 G19 E 12 E 17 G23
Mixing Hgt(ft-agl/msl)5260 5180
Transport Wnd (mph) E 12 E 14
Vent Rate (kt-ft) 52600 62160
Dispersion 5 5
DSI 5 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ015-110930-
Southern Hills-
516 AM AST Sun Aug 10 2025
Today Tonight Mon
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 30 0 30
Temp (24h trend) 88 (+4) 70 (-2) 88
RH % (24h trend) 60 (-9) 98 (+5) 61
Wind 20ft/early(mph) SE 11 E 10 E 12
Wind 20ft/late(mph) SE 11 E 10 E 12
Mixing Hgt(ft-agl/msl)5730 5520
Transport Wnd (mph) E 10 E 14
Vent Rate (kt-ft) 51570 66240
Dispersion 5 5
DSI 5 2 6
RH Recovery Excellent
Remarks...None.
$$
PRZ016-110930-
North Coastal Plains-
516 AM AST Sun Aug 10 2025
Today Tonight Mon
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 40 20 50
Temp (24h trend) 90 (+2) 73 (-2) 90
RH % (24h trend) 63 (-6) 97 (+2) 64
Wind 20ft/early(mph) E 16 E 13 E 18
Wind 20ft/late(mph) E 16 E 13 E 18
Mixing Hgt(ft-agl/msl)4880 4630
Transport Wnd (mph) E 10 E 14
Vent Rate (kt-ft) 43920 55560
Dispersion 5 5
DSI 5 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ017-110930-
Northern Hills-
516 AM AST Sun Aug 10 2025
Today Tonight Mon
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 60 0 60
Temp (24h trend) 89 (+3) 70 (-2) 88
RH % (24h trend) 65 (-6) 98 (+1) 67
Wind 20ft/early(mph) E 13 E 11 NE 14
Wind 20ft/late(mph) E 13 E 11 NE 14
Mixing Hgt(ft-agl/msl)5550 5240
Transport Wnd (mph) E 8 E 13
Vent Rate (kt-ft) 38850 57640
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ018-110930-
West Coast-
516 AM AST Sun Aug 10 2025
Today Tonight Mon
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms None Tstms
Chance Precip (%) 40 0 60
Temp (24h trend) 92 (+3) 71 (-2) 91
RH % (24h trend) 59 (-8) 98 (+4) 60
Wind 20ft/early(mph) E 10 E 12 E 12
Wind 20ft/late(mph) E 10 E 12 E 12
Mixing Hgt(ft-agl/msl)5020 4690
Transport Wnd (mph) E 6 E 10
Vent Rate (kt-ft) 25100 42210
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ019-110930-
Eastern Interior-
516 AM AST Sun Aug 10 2025
Today Tonight Mon
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 40 20 50
Temp (24h trend) 89 (+3) 71 (-2) 89
RH % (24h trend) 62 (-6) 98 (+2) 63
Wind 20ft/early(mph) E 11 E 11 E 12
Wind 20ft/late(mph) E 11 E 11 E 12
Mixing Hgt(ft-agl/msl)5900 5230
Transport Wnd (mph) E 12 E 14
Vent Rate (kt-ft) 59000 62760
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ022-110930-
Luquillo Mountain Range-
516 AM AST Sun Aug 10 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 50 30 50
Temp (24h trend) 84 (+4) 69 (-2) 84
RH % (24h trend) 69 (-8) 100 (+1) 71
Wind 20ft/early(mph) SE 10 E 9 E 11
Wind 20ft/late(mph) SE 10 E 9 E 11
Mixing Hgt(ft-agl/msl)4540 4390
Transport Wnd (mph) E 12 E 14
Vent Rate (kt-ft) 45400 52680
Dispersion 5 5
DSI 5 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ023-110930-
Central Mountain Range-
516 AM AST Sun Aug 10 2025
Today Tonight Mon
Cloud Cover Pcldy Clear Pcldy
Precip Type Tstms None Tstms
Chance Precip (%) 50 0 50
Temp (24h trend) 86 (+5) 67 (-3) 86
RH % (24h trend) 66 (-9) 99 (+3) 67
Wind 20ft/early(mph) SE 6 E 5 E 9
Wind 20ft/late(mph) SE 6 E 5 E 9
Mixing Hgt(ft-agl/msl)6300 5750
Transport Wnd (mph) E 7 E 10
Vent Rate (kt-ft) 37800 51750
Dispersion 5 5
DSI 5 1 6
RH Recovery Excellent
Remarks...None.
$$
PRZ024-110930-
Cayey Mountain Range-
516 AM AST Sun Aug 10 2025
Today Tonight Mon
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms Showers Showers
Chance Precip (%) 50 20 50
Temp (24h trend) 84 (+2) 70 (-1) 84
RH % (24h trend) 66 (-6) 99 (0) 67
Wind 20ft/early(mph) SE 10 E 9 E 11
Wind 20ft/late(mph) SE 10 E 9 E 11
Mixing Hgt(ft-agl/msl)5220 4790
Transport Wnd (mph) E 12 E 15
Vent Rate (kt-ft) 52200 62270
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ025-110930-
Vieques-
516 AM AST Sun Aug 10 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 50 30 40
Temp (24h trend) 90 (+2) 77 (0) 89
RH % (24h trend) 58 (-6) 90 (0) 59
Wind 20ft/early(mph) E 12 E 13 G17 E 13 G18
Wind 20ft/late(mph) E 12 E 13 G17 E 13 G18
Mixing Hgt(ft-agl/msl)3430 3540
Transport Wnd (mph) E 12 E 16
Vent Rate (kt-ft) 34300 49560
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-110930-
Culebra-
516 AM AST Sun Aug 10 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 50 30 50
Temp (24h trend) 91 (+3) 77 (-1) 91
RH % (24h trend) 58 (-9) 91 (+1) 58
Wind 20ft/early(mph) E 12 E 14 G19 E 13 G17
Wind 20ft/late(mph) E 12 E 14 G19 E 13 G17
Mixing Hgt(ft-agl/msl)3490 3490
Transport Wnd (mph) E 14 E 17
Vent Rate (kt-ft) 41880 52350
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-110930-
Southwest Coastal Plains and Mona Island-
516 AM AST Sun Aug 10 2025
Today Tonight Mon
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers None Showers
Chance Precip (%) 20 0 40
Temp (24h trend) 92 (+3) 74 (-2) 92
RH % (24h trend) 53 (-3) 90 (+5) 57
Wind 20ft/early(mph) SE 13 G18 E 16 G19 E 18 G23
Wind 20ft/late(mph) SE 13 G18 E 16 G19 E 18 G23
Mixing Hgt(ft-agl/msl)5290 5180
Transport Wnd (mph) E 12 E 14
Vent Rate (kt-ft) 52900 62160
Dispersion 5 5
DSI 6 4 5
RH Recovery Excellent
Remarks...None.
$$
VIZ001-110930-
Saint Thomas and Saint John-
516 AM AST Sun Aug 10 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 30 30
Temp (24h trend) 87 (+2) 76 (-2) 88
RH % (24h trend) 64 (-6) 92 (+1) 62
Wind 20ft/early(mph) E 12 E 16 G19 E 13 G17
Wind 20ft/late(mph) E 12 E 16 G19 E 13 G17
Mixing Hgt(ft-agl/msl)3500 3560
Transport Wnd (mph) E 14 E 18
Vent Rate (kt-ft) 42000 56960
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-110930-
St Croix-
516 AM AST Sun Aug 10 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 40 30
Temp (24h trend) 90 (+4) 77 (-1) 88
RH % (24h trend) 62 (-8) 90 (-1) 63
Wind 20ft/early(mph) E 13 E 13 G17 E 13
Wind 20ft/late(mph) E 13 E 13 G17 E 13
Mixing Hgt(ft-agl/msl)4700 4770
Transport Wnd (mph) E 14 E 16
Vent Rate (kt-ft) 56400 66780
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$