Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
043
FNCA52 TJSJ 060823
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
423 AM AST Wed Aug 6 2025
.DISCUSSION...
Like previous days, the fire weather danger is low, today. KBDI
values remain above fire danger thresholds across Guanica (588)
and Cabo Rojo (621), as well as the RH values. The available
moisture from previous rains will limit drying conditions and
reduce the potential for rapid fire spread. Winds will be from
the E-SE and remain below 15 mph along the southern coastal
plains. Like always, conditions will continue to be closely
monitored throughout the day for any rapid changes.
PRZ014-070830-
Southeast Coastal Plains-
423 AM AST Wed Aug 6 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 50 20
Temp (24h trend) 92 (+1) 74 (-2) 92
RH % (24h trend) 57 (-1) 93 (+3) 54
Wind 20ft/early(mph) SE 12 G18 E 10 E 12 G19
Wind 20ft/late(mph) SE 12 G18 E 10 E 12 G19
Mixing Hgt(ft-agl/msl)4690 5270
Transport Wnd (mph) E 13 E 13
Vent Rate (kt-ft) 51590 57970
Dispersion 5 5
DSI 5 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ015-070830-
Southern Hills-
423 AM AST Wed Aug 6 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 40 30
Temp (24h trend) 88 (+3) 70 (-3) 89
RH % (24h trend) 62 (-4) 98 (+4) 59
Wind 20ft/early(mph) SE 10 E 11 E 11
Wind 20ft/late(mph) SE 10 E 11 E 11
Mixing Hgt(ft-agl/msl)5410 5980
Transport Wnd (mph) E 12 E 13
Vent Rate (kt-ft) 54100 65780
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ016-070830-
North Coastal Plains-
423 AM AST Wed Aug 6 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 30 30
Temp (24h trend) 91 (+2) 73 (-3) 90
RH % (24h trend) 62 (-6) 100 (+4) 63
Wind 20ft/early(mph) E 16 G18 E 14 E 18
Wind 20ft/late(mph) E 16 G18 E 14 E 18
Mixing Hgt(ft-agl/msl)4920 5200
Transport Wnd (mph) E 12 E 12
Vent Rate (kt-ft) 49200 52000
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ017-070830-
Northern Hills-
423 AM AST Wed Aug 6 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Showers
Chance Precip (%) 70 40 30
Temp (24h trend) 89 (+2) 70 (-4) 88
RH % (24h trend) 66 (-4) 99 (0) 64
Wind 20ft/early(mph) E 12 E 11 NE 14
Wind 20ft/late(mph) E 12 E 11 NE 14
Mixing Hgt(ft-agl/msl)5670 5990
Transport Wnd (mph) E 9 E 9
Vent Rate (kt-ft) 45360 47920
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ018-070830-
West Coast-
423 AM AST Wed Aug 6 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Mclear
Precip Type Tstms Tstms Showers
Chance Precip (%) 60 50 40
Temp (24h trend) 92 (+2) 71 (-3) 92
RH % (24h trend) 61 (-4) 100 (+3) 58
Wind 20ft/early(mph) E 11 E 12 E 11
Wind 20ft/late(mph) E 11 E 12 E 11
Mixing Hgt(ft-agl/msl)4880 5050
Transport Wnd (mph) E 8 E 8
Vent Rate (kt-ft) 34160 35350
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ019-070830-
Eastern Interior-
423 AM AST Wed Aug 6 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 30 30
Temp (24h trend) 89 (+3) 71 (-4) 89
RH % (24h trend) 61 (-7) 99 (+2) 62
Wind 20ft/early(mph) E 11 E 11 E 11
Wind 20ft/late(mph) E 11 E 11 E 11
Mixing Hgt(ft-agl/msl)5730 6310
Transport Wnd (mph) E 12 E 12
Vent Rate (kt-ft) 57300 63100
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ022-070830-
Luquillo Mountain Range-
423 AM AST Wed Aug 6 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 40 30
Temp (24h trend) 85 (+5) 69 (-3) 84
RH % (24h trend) 68 (-11) 100 (+1) 70
Wind 20ft/early(mph) E 10 E 9 E 9
Wind 20ft/late(mph) E 10 E 9 E 9
Mixing Hgt(ft-agl/msl)4320 4230
Transport Wnd (mph) SE 13 E 12
Vent Rate (kt-ft) 47520 42300
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ023-070830-
Central Mountain Range-
423 AM AST Wed Aug 6 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 60 40 50
Temp (24h trend) 86 (+4) 67 (-4) 87
RH % (24h trend) 67 (-5) 100 (+2) 64
Wind 20ft/early(mph) SE 8 E 8 E 9
Wind 20ft/late(mph) SE 8 E 8 E 9
Mixing Hgt(ft-agl/msl)6330 6810
Transport Wnd (mph) E 9 E 9
Vent Rate (kt-ft) 50640 54480
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ024-070830-
Cayey Mountain Range-
423 AM AST Wed Aug 6 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 60 30
Temp (24h trend) 85 (+3) 70 (-2) 85
RH % (24h trend) 66 (-5) 100 (+1) 66
Wind 20ft/early(mph) E 9 E 8 E 10
Wind 20ft/late(mph) E 9 E 8 E 10
Mixing Hgt(ft-agl/msl)4980 5300
Transport Wnd (mph) E 12 E 13
Vent Rate (kt-ft) 49800 58300
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ025-070830-
Vieques-
423 AM AST Wed Aug 6 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 40 30
Temp (24h trend) 90 (+2) 77 (-1) 90
RH % (24h trend) 56 (-8) 88 (-2) 58
Wind 20ft/early(mph) E 12 E 14 G19 E 11
Wind 20ft/late(mph) E 12 E 14 G19 E 11
Mixing Hgt(ft-agl/msl)3560 3490
Transport Wnd (mph) E 13 E 16
Vent Rate (kt-ft) 39160 48860
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-070830-
Culebra-
423 AM AST Wed Aug 6 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 30 30
Temp (24h trend) 91 (+3) 78 (-2) 91
RH % (24h trend) 58 (-10) 88 (-2) 59
Wind 20ft/early(mph) E 12 E 14 G18 E 11
Wind 20ft/late(mph) E 12 E 14 G18 E 11
Mixing Hgt(ft-agl/msl)3350 3480
Transport Wnd (mph) E 17 E 16
Vent Rate (kt-ft) 50250 48720
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-070830-
Southwest Coastal Plains and Mona Island-
423 AM AST Wed Aug 6 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 40 30 20
Temp (24h trend) 92 (+2) 74 (-2) 93
RH % (24h trend) 57 (-2) 91 (+4) 53
Wind 20ft/early(mph) SE 13 G20 E 11 SE 13 G21
Wind 20ft/late(mph) SE 13 G20 E 11 SE 13 G21
Mixing Hgt(ft-agl/msl)4910 5210
Transport Wnd (mph) E 14 E 14
Vent Rate (kt-ft) 58920 62520
Dispersion 5 5
DSI 5 4 6
RH Recovery Excellent
Remarks...None.
$$
VIZ001-070830-
Saint Thomas and Saint John-
423 AM AST Wed Aug 6 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 20 30
Temp (24h trend) 88 (+3) 76 (-3) 87
RH % (24h trend) 64 (-8) 92 (-1) 66
Wind 20ft/early(mph) E 12 E 14 G19 E 11
Wind 20ft/late(mph) E 12 E 14 G19 E 11
Mixing Hgt(ft-agl/msl)3360 3490
Transport Wnd (mph) E 15 E 16
Vent Rate (kt-ft) 43680 48860
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-070830-
St Croix-
423 AM AST Wed Aug 6 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 20 30
Temp (24h trend) 89 (+3) 77 (-2) 89
RH % (24h trend) 63 (-7) 91 (+1) 63
Wind 20ft/early(mph) E 12 E 13 E 11
Wind 20ft/late(mph) E 12 E 13 E 11
Mixing Hgt(ft-agl/msl)4640 4500
Transport Wnd (mph) E 16 E 15
Vent Rate (kt-ft) 64960 58500
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$