Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
504
FNCA52 TJSJ 150614
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
214 AM AST Mon Dec 15 2025
.DISCUSSION...
A surge in moisture associated with a pre-frontal trough moving
to the north is expected in the short-term period. During this
time, relative humidity and the KBDI are not expected to meet
fire weather criteria. However, breezy conditions are expected
along the south coast of PR through mid-week. The fire danger
will remain low today.
PRZ014-160615-
Southeast Coastal Plains-
214 AM AST Mon Dec 15 2025
Today Tonight Tue
Cloud Cover Mclear Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 20 10 10
Temp (24h trend) 88 (+3) 70 (-1) 88
RH % (24h trend) 56 (-8) 96 (+4) 60
Wind 20ft/early(mph) SE 9 E 6 SE 11
Wind 20ft/late(mph) SE 9 E 6 SE 11
Mixing Hgt(ft-agl/msl)3930 4540
Transport Wnd (mph) E 8 E 10
Vent Rate (kt-ft) 27510 40860
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ015-160615-
Southern Hills-
214 AM AST Mon Dec 15 2025
Today Tonight Tue
Cloud Cover Mclear Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 30 10 30
Temp (24h trend) 85 (+4) 66 (-3) 84
RH % (24h trend) 59 (-9) 99 (+5) 64
Wind 20ft/early(mph) SE 8 Lgt/Var SE 9
Wind 20ft/late(mph) SE 8 Lgt/Var SE 9
Mixing Hgt(ft-agl/msl)4880 5090
Transport Wnd (mph) E 6 E 10
Vent Rate (kt-ft) 24400 45810
Dispersion 5 5
DSI 5 1 5
RH Recovery Excellent
Remarks...None.
$$
PRZ016-160615-
North Coastal Plains-
214 AM AST Mon Dec 15 2025
Today Tonight Tue
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 20 20
Temp (24h trend) 88 (0) 69 (-1) 87
RH % (24h trend) 59 (0) 100 (+3) 62
Wind 20ft/early(mph) E 10 SE 8 E 12
Wind 20ft/late(mph) E 10 SE 8 E 12
Mixing Hgt(ft-agl/msl)4020 4430
Transport Wnd (mph) E 6 E 9
Vent Rate (kt-ft) 20100 35440
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ017-160615-
Northern Hills-
214 AM AST Mon Dec 15 2025
Today Tonight Tue
Cloud Cover Pcldy Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 50 10 30
Temp (24h trend) 87 (+1) 67 (0) 86
RH % (24h trend) 54 (-4) 100 (+3) 60
Wind 20ft/early(mph) NE 8 E 6 E 11
Wind 20ft/late(mph) NE 8 E 6 E 11
Mixing Hgt(ft-agl/msl)5100 5240
Transport Wnd (mph) NE 3 E 6
Vent Rate (kt-ft) 15300 26200
Dispersion 5 5
DSI 5 1 5
RH Recovery Excellent
Remarks...None.
$$
PRZ018-160615-
West Coast-
214 AM AST Mon Dec 15 2025
Today Tonight Tue
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 40 10 60
Temp (24h trend) 88 (+1) 69 (-1) 88
RH % (24h trend) 57 (-6) 99 (+5) 61
Wind 20ft/early(mph) E 8 E 9 E 9
Wind 20ft/late(mph) E 8 E 9 E 9
Mixing Hgt(ft-agl/msl)3880 4240
Transport Wnd (mph) E 5 E 5
Vent Rate (kt-ft) 15520 16960
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ019-160615-
Eastern Interior-
214 AM AST Mon Dec 15 2025
Today Tonight Tue
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 30 30
Temp (24h trend) 86 (+3) 67 (-2) 85
RH % (24h trend) 62 (-5) 100 (+2) 66
Wind 20ft/early(mph) SE 6 SE 6 SE 11
Wind 20ft/late(mph) SE 6 SE 6 SE 11
Mixing Hgt(ft-agl/msl)5310 5310
Transport Wnd (mph) SE 6 E 10
Vent Rate (kt-ft) 26550 47790
Dispersion 5 5
DSI 5 1 5
RH Recovery Excellent
Remarks...None.
$$
PRZ022-160615-
Luquillo Mountain Range-
214 AM AST Mon Dec 15 2025
Today Tonight Tue
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 60 60 50
Temp (24h trend) 81 (+3) 65 (-2) 80
RH % (24h trend) 70 (-3) 100 (0) 72
Wind 20ft/early(mph) Lgt/Var Lgt/Var SE 9
Wind 20ft/late(mph) Lgt/Var Lgt/Var SE 9
Mixing Hgt(ft-agl/msl)3760 3850
Transport Wnd (mph) SE 6 E 13
Vent Rate (kt-ft) 18800 42350
Dispersion 5 5
DSI 4 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ023-160615-
Central Mountain Range-
214 AM AST Mon Dec 15 2025
Today Tonight Tue
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers Showers Tstms
Chance Precip (%) 50 10 60
Temp (24h trend) 85 (+5) 64 (-2) 84
RH % (24h trend) 56 (-9) 98 (+3) 61
Wind 20ft/early(mph) SE 5 E 6 SE 6
Wind 20ft/late(mph) SE 5 E 6 SE 6
Mixing Hgt(ft-agl/msl)6640 6080
Transport Wnd (mph) SE 3 SE 6
Vent Rate (kt-ft) 19920 30400
Dispersion 5 5
DSI 5 1 4
RH Recovery Excellent
Remarks...None.
$$
PRZ024-160615-
Cayey Mountain Range-
214 AM AST Mon Dec 15 2025
Today Tonight Tue
Cloud Cover Mclear Pcldy Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 30 30 20
Temp (24h trend) 81 (+3) 66 (-1) 80
RH % (24h trend) 68 (-5) 100 (0) 72
Wind 20ft/early(mph) SE 5 Lgt/Var E 8
Wind 20ft/late(mph) SE 5 Lgt/Var E 8
Mixing Hgt(ft-agl/msl)4180 4560
Transport Wnd (mph) SE 7 E 12
Vent Rate (kt-ft) 25080 45600
Dispersion 5 5
DSI 5 1 5
RH Recovery Excellent
Remarks...None.
$$
PRZ025-160615-
Vieques-
214 AM AST Mon Dec 15 2025
Today Tonight Tue
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 70 60 50
Temp (24h trend) 85 (-1) 72 (-1) 85
RH % (24h trend) 64 (+2) 97 (+4) 63
Wind 20ft/early(mph) Lgt/Var E 9 E 14 G17
Wind 20ft/late(mph) Lgt/Var E 9 E 14 G17
Mixing Hgt(ft-agl/msl)3010 3220
Transport Wnd (mph) E 7 E 16
Vent Rate (kt-ft) 18060 45080
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-160615-
Culebra-
214 AM AST Mon Dec 15 2025
Today Tonight Tue
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 70 50 50
Temp (24h trend) 87 (+1) 73 (-2) 87
RH % (24h trend) 62 (-1) 97 (+6) 62
Wind 20ft/early(mph) SE 5 E 10 E 14 G18
Wind 20ft/late(mph) SE 5 E 10 E 14 G18
Mixing Hgt(ft-agl/msl)2960 3220
Transport Wnd (mph) E 8 E 16
Vent Rate (kt-ft) 20720 45080
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-160615-
Southwest Coastal Plains and Mona Island-
214 AM AST Mon Dec 15 2025
Today Tonight Tue
Cloud Cover Mclear Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 20 10 30
Temp (24h trend) 89 (+3) 71 (-1) 89
RH % (24h trend) 56 (-6) 95 (+5) 59
Wind 20ft/early(mph) SE 12 E 8 SE 12 G17
Wind 20ft/late(mph) SE 12 E 8 SE 12 G17
Mixing Hgt(ft-agl/msl)3970 4380
Transport Wnd (mph) SE 9 E 10
Vent Rate (kt-ft) 31760 39420
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
VIZ001-160615-
Saint Thomas and Saint John-
214 AM AST Mon Dec 15 2025
Today Tonight Tue
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 60 50 30
Temp (24h trend) 86 (+1) 72 (-3) 86
RH % (24h trend) 63 (-2) 99 (+7) 62
Wind 20ft/early(mph) SE 12 E 11 E 13 G17
Wind 20ft/late(mph) SE 12 E 11 E 13 G17
Mixing Hgt(ft-agl/msl)3240 3370
Transport Wnd (mph) SE 13 E 17
Vent Rate (kt-ft) 35640 50550
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-160615-
St Croix-
214 AM AST Mon Dec 15 2025
Today Tonight Tue
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 60 40 50
Temp (24h trend) 86 (+1) 72 (-3) 86
RH % (24h trend) 64 (-2) 99 (+6) 65
Wind 20ft/early(mph) SE 10 E 9 E 14 G18
Wind 20ft/late(mph) SE 10 E 9 E 14 G18
Mixing Hgt(ft-agl/msl)3920 3670
Transport Wnd (mph) SE 9 E 18
Vent Rate (kt-ft) 31360 58720
Dispersion 5 5
DSI 5 5 6
RH Recovery Excellent
Remarks...None.
$$
$$