Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
105
FNCA52 TJSJ 170912
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
512 AM AST Thu Apr 17 2025
.DISCUSSION...
Plenty of moisture and southeasterly winds will dominate the
region today resulting in RH values in the upper 50s to the lowers
60s. Winds will peak up at 10 AM, from the southeast with gusty
winds across the coastal areas. Afternoon shower activity is
forecast for today along the mountain sections and northwestern
PR. Given the expected conditions, the fire danger threat will
remain low for today.
PRZ014-180915-
Southeast Coastal Plains-
512 AM AST Thu Apr 17 2025
Today Tonight Fri
Cloud Cover Pcldy Mcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 50 80 60
Temp (24h trend) 90 (+3) 72 (-2) 90
RH % (24h trend) 49 (-4) 86 (+7) 48
Wind 20ft/early(mph) SE 13 G18 E 6 SE 10
Wind 20ft/late(mph) SE 13 G18 E 6 SE 10
Mixing Hgt(ft-agl/msl)4760 4480
Transport Wnd (mph) SE 13 E 6
Vent Rate (kt-ft) 52360 22400
Dispersion 5 5
DSI 6 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ015-180915-
Southern Hills-
512 AM AST Thu Apr 17 2025
Today Tonight Fri
Cloud Cover Pcldy Mcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 50 80 70
Temp (24h trend) 86 (+3) 69 (-3) 86
RH % (24h trend) 60 (-8) 96 (+12) 62
Wind 20ft/early(mph) SE 11 Lgt/Var SE 6
Wind 20ft/late(mph) SE 11 Lgt/Var SE 6
Mixing Hgt(ft-agl/msl)5300 5010
Transport Wnd (mph) SE 12 E 5
Vent Rate (kt-ft) 53000 20040
Dispersion 5 5
DSI 5 1 5
RH Recovery Excellent
Remarks...None.
$$
PRZ016-180915-
North Coastal Plains-
512 AM AST Thu Apr 17 2025
Today Tonight Fri
Cloud Cover Mcldy Mcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 70 70 50
Temp (24h trend) 91 (+2) 72 (-1) 88
RH % (24h trend) 58 (-3) 98 (+9) 64
Wind 20ft/early(mph) E 14 E 8 NE 12
Wind 20ft/late(mph) E 14 E 8 NE 12
Mixing Hgt(ft-agl/msl)5330 4300
Transport Wnd (mph) SE 9 E 7
Vent Rate (kt-ft) 42640 25800
Dispersion 5 5
DSI 6 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ017-180915-
Northern Hills-
512 AM AST Thu Apr 17 2025
Today Tonight Fri
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 90 50 60
Temp (24h trend) 88 (+1) 70 (-1) 85
RH % (24h trend) 61 (0) 97 (+9) 70
Wind 20ft/early(mph) E 11 N 6 NE 10
Wind 20ft/late(mph) E 11 N 6 NE 10
Mixing Hgt(ft-agl/msl)5980 4600
Transport Wnd (mph) SE 7 E 6
Vent Rate (kt-ft) 35880 23000
Dispersion 5 5
DSI 5 1 5
RH Recovery Excellent
Remarks...None.
$$
PRZ018-180915-
West Coast-
512 AM AST Thu Apr 17 2025
Today Tonight Fri
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 50 50 80
Temp (24h trend) 89 (+1) 70 (-2) 88
RH % (24h trend) 60 (-5) 99 (+11) 64
Wind 20ft/early(mph) E 13 NE 9 E 14
Wind 20ft/late(mph) E 13 NE 9 E 14
Mixing Hgt(ft-agl/msl)4880 4290
Transport Wnd (mph) SE 12 NE 5
Vent Rate (kt-ft) 48800 17160
Dispersion 5 5
DSI 6 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ019-180915-
Eastern Interior-
512 AM AST Thu Apr 17 2025
Today Tonight Fri
Cloud Cover Pcldy Mcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 60 90 60
Temp (24h trend) 89 (+4) 70 (-2) 87
RH % (24h trend) 58 (-5) 97 (+8) 61
Wind 20ft/early(mph) SE 12 SE 8 E 6
Wind 20ft/late(mph) SE 12 SE 8 E 6
Mixing Hgt(ft-agl/msl)5910 5420
Transport Wnd (mph) SE 12 E 5
Vent Rate (kt-ft) 59100 21680
Dispersion 5 5
DSI 6 1 5
RH Recovery Excellent
Remarks...None.
$$
PRZ022-180915-
Luquillo Mountain Range-
512 AM AST Thu Apr 17 2025
Today Tonight Fri
Cloud Cover Pcldy Mcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 60 90 70
Temp (24h trend) 85 (+6) 67 (-2) 83
RH % (24h trend) 64 (-9) 99 (+4) 67
Wind 20ft/early(mph) SE 11 SE 6 SE 6
Wind 20ft/late(mph) SE 11 SE 6 SE 6
Mixing Hgt(ft-agl/msl)4410 4670
Transport Wnd (mph) SE 13 E 5
Vent Rate (kt-ft) 48510 18680
Dispersion 5 5
DSI 6 1 5
RH Recovery Excellent
Remarks...None.
$$
PRZ023-180915-
Central Mountain Range-
512 AM AST Thu Apr 17 2025
Today Tonight Fri
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 70 60 80
Temp (24h trend) 84 (+2) 67 (-2) 83
RH % (24h trend) 63 (-6) 97 (+11) 70
Wind 20ft/early(mph) SE 8 E 8 E 10
Wind 20ft/late(mph) SE 8 E 8 E 10
Mixing Hgt(ft-agl/msl)6190 5140
Transport Wnd (mph) SE 9 E 3
Vent Rate (kt-ft) 49520 15420
Dispersion 5 5
DSI 5 1 5
RH Recovery Excellent
Remarks...None.
$$
PRZ024-180915-
Cayey Mountain Range-
512 AM AST Thu Apr 17 2025
Today Tonight Fri
Cloud Cover Pcldy Mcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 50 80 50
Temp (24h trend) 84 (+4) 68 (-2) 83
RH % (24h trend) 65 (-8) 100 (+7) 67
Wind 20ft/early(mph) SE 10 Lgt/Var SE 6
Wind 20ft/late(mph) SE 10 Lgt/Var SE 6
Mixing Hgt(ft-agl/msl)5170 5140
Transport Wnd (mph) SE 12 E 6
Vent Rate (kt-ft) 51700 25700
Dispersion 5 5
DSI 6 1 5
RH Recovery Excellent
Remarks...None.
$$
PRZ025-180915-
Vieques-
512 AM AST Thu Apr 17 2025
Today Tonight Fri
Cloud Cover Pcldy Mcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 50 90 60
Temp (24h trend) 89 (+3) 72 (-3) 88
RH % (24h trend) 56 (-6) 95 (+7) 57
Wind 20ft/early(mph) SE 12 SE 6 E 8
Wind 20ft/late(mph) SE 12 SE 6 E 8
Mixing Hgt(ft-agl/msl)3000 2910
Transport Wnd (mph) SE 16 E 8
Vent Rate (kt-ft) 42000 20370
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-180915-
Culebra-
512 AM AST Thu Apr 17 2025
Today Tonight Fri
Cloud Cover Pcldy Mcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 50 90 60
Temp (24h trend) 89 (+2) 74 (-2) 88
RH % (24h trend) 59 (-4) 96 (+10) 61
Wind 20ft/early(mph) SE 13 G17 SE 8 E 8
Wind 20ft/late(mph) SE 13 G17 SE 8 E 8
Mixing Hgt(ft-agl/msl)3110 2940
Transport Wnd (mph) E 16 E 8
Vent Rate (kt-ft) 43540 20580
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-180915-
Southwest Coastal Plains and Mona Island-
512 AM AST Thu Apr 17 2025
Today Tonight Fri
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Tstms Tstms
Chance Precip (%) 40 70 70
Temp (24h trend) 91 (+3) 72 (-3) 90
RH % (24h trend) 49 (-6) 87 (+8) 49
Wind 20ft/early(mph) SE 16 G22 E 9 SE 16
Wind 20ft/late(mph) SE 16 G22 E 9 SE 16
Mixing Hgt(ft-agl/msl)4780 4470
Transport Wnd (mph) SE 15 SE 5
Vent Rate (kt-ft) 62140 17880
Dispersion 5 5
DSI 6 2 5
RH Recovery Excellent
Remarks...None.
$$
VIZ001-180915-
Saint Thomas and Saint John-
512 AM AST Thu Apr 17 2025
Today Tonight Fri
Cloud Cover Pcldy Mcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 50 90 60
Temp (24h trend) 87 (+1) 73 (-2) 85
RH % (24h trend) 64 (+2) 97 (+9) 64
Wind 20ft/early(mph) SE 16 G19 SE 10 E 8
Wind 20ft/late(mph) SE 16 G19 SE 10 E 8
Mixing Hgt(ft-agl/msl)3020 2670
Transport Wnd (mph) E 17 E 8
Vent Rate (kt-ft) 45300 18690
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-180915-
St Croix-
512 AM AST Thu Apr 17 2025
Today Tonight Fri
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 50 50 50
Temp (24h trend) 88 (+1) 75 (-1) 87
RH % (24h trend) 64 (+1) 92 (+6) 64
Wind 20ft/early(mph) SE 12 SE 9 E 6
Wind 20ft/late(mph) SE 12 SE 9 E 6
Mixing Hgt(ft-agl/msl)4300 4160
Transport Wnd (mph) SE 15 SE 6
Vent Rate (kt-ft) 55900 20800
Dispersion 5 5
DSI 6 5 5
RH Recovery Excellent
Remarks...None.
$$
$$