Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
722
FNCA52 TJSJ 250852
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
452 AM AST Wed Jun 25 2025
.DISCUSSION...
A drier airmass with Saharan Dust particles will be dominating
Puerto Rico and the U.S. Virgin Islands today. Relative humidity
values will be falling within the critical fire weather conditions
mainly across the southern sections of Puerto Rico. Winds will be
stronger around 15 to 18 mph. Therefore, there is a moderate fire
danger threat for today.
PRZ014-260900-
Southeast Coastal Plains-
452 AM AST Wed Jun 25 2025
Today Tonight Thu
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 10 10 30
Temp (24h trend) 92 (+3) 74 (-2) 93
RH % (24h trend) 52 (-12) 90 (+1) 50
Wind 20ft/early(mph) E 18 G23 E 16 G20 E 21 G28
Wind 20ft/late(mph) E 18 G23 E 16 G20 E 21 G28
Mixing Hgt(ft-agl/msl)5090 5510
Transport Wnd (mph) E 24 E 21
Vent Rate (kt-ft) 106890 99180
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ015-260900-
Southern Hills-
452 AM AST Wed Jun 25 2025
Today Tonight Thu
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 0 0 40
Temp (24h trend) 88 (+4) 70 (-4) 89
RH % (24h trend) 58 (-13) 96 (+5) 57
Wind 20ft/early(mph) E 14 E 14 E 17
Wind 20ft/late(mph) E 14 E 14 E 17
Mixing Hgt(ft-agl/msl)5360 5900
Transport Wnd (mph) E 23 E 18
Vent Rate (kt-ft) 107200 94400
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ016-260900-
North Coastal Plains-
452 AM AST Wed Jun 25 2025
Today Tonight Thu
Cloud Cover Mclear Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 0 10 20
Temp (24h trend) 90 (+1) 74 (-2) 90
RH % (24h trend) 61 (-7) 97 (+2) 62
Wind 20ft/early(mph) E 21 G23 E 19 E 21 G24
Wind 20ft/late(mph) E 21 G23 E 19 E 21 G24
Mixing Hgt(ft-agl/msl)5580 5060
Transport Wnd (mph) E 23 E 23
Vent Rate (kt-ft) 111600 101200
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ017-260900-
Northern Hills-
452 AM AST Wed Jun 25 2025
Today Tonight Thu
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers None Showers
Chance Precip (%) 10 0 40
Temp (24h trend) 88 (+1) 71 (-3) 88
RH % (24h trend) 62 (-6) 99 (+2) 63
Wind 20ft/early(mph) E 19 E 17 E 20
Wind 20ft/late(mph) E 19 E 17 E 20
Mixing Hgt(ft-agl/msl)6220 5370
Transport Wnd (mph) E 18 E 18
Vent Rate (kt-ft) 99520 85920
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ018-260900-
West Coast-
452 AM AST Wed Jun 25 2025
Today Tonight Thu
Cloud Cover Mclear Clear Pcldy
Precip Type Showers None Showers
Chance Precip (%) 20 0 70
Temp (24h trend) 92 (+2) 71 (-3) 92
RH % (24h trend) 57 (-8) 97 (+2) 57
Wind 20ft/early(mph) E 18 E 17 E 17
Wind 20ft/late(mph) E 18 E 17 E 17
Mixing Hgt(ft-agl/msl)5170 4880
Transport Wnd (mph) E 16 E 10
Vent Rate (kt-ft) 72380 43920
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ019-260900-
Eastern Interior-
452 AM AST Wed Jun 25 2025
Today Tonight Thu
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 20 20 40
Temp (24h trend) 88 (+3) 72 (-3) 88
RH % (24h trend) 62 (-9) 96 (+2) 62
Wind 20ft/early(mph) E 16 E 14 E 14
Wind 20ft/late(mph) E 16 E 14 E 14
Mixing Hgt(ft-agl/msl)5340 5550
Transport Wnd (mph) E 23 E 20
Vent Rate (kt-ft) 106800 94350
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ022-260900-
Luquillo Mountain Range-
452 AM AST Wed Jun 25 2025
Today Tonight Thu
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 30 30 40
Temp (24h trend) 83 (+3) 70 (-3) 83
RH % (24h trend) 71 (-11) 100 (+2) 71
Wind 20ft/early(mph) E 13 E 12 E 13
Wind 20ft/late(mph) E 13 E 12 E 13
Mixing Hgt(ft-agl/msl)4990 4810
Transport Wnd (mph) E 24 E 21
Vent Rate (kt-ft) 104790 86580
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ023-260900-
Central Mountain Range-
452 AM AST Wed Jun 25 2025
Today Tonight Thu
Cloud Cover Mclear Clear Pcldy
Precip Type Showers None Showers
Chance Precip (%) 10 0 70
Temp (24h trend) 87 (+5) 67 (-4) 88
RH % (24h trend) 61 (-11) 100 (+3) 61
Wind 20ft/early(mph) E 12 E 10 E 14
Wind 20ft/late(mph) E 12 E 10 E 14
Mixing Hgt(ft-agl/msl)6800 6650
Transport Wnd (mph) E 16 E 14
Vent Rate (kt-ft) 95200 79800
Dispersion 5 5
DSI 6 2 6
RH Recovery Excellent
Remarks...None.
$$
PRZ024-260900-
Cayey Mountain Range-
452 AM AST Wed Jun 25 2025
Today Tonight Thu
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 30 20 40
Temp (24h trend) 83 (+3) 70 (-2) 84
RH % (24h trend) 69 (-11) 98 (-1) 67
Wind 20ft/early(mph) E 13 E 12 E 14
Wind 20ft/late(mph) E 13 E 12 E 14
Mixing Hgt(ft-agl/msl)4970 5100
Transport Wnd (mph) E 24 E 22
Vent Rate (kt-ft) 104370 96900
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ025-260900-
Vieques-
452 AM AST Wed Jun 25 2025
Today Tonight Thu
Cloud Cover Mclear Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 20 30 40
Temp (24h trend) 88 (+1) 77 (-1) 88
RH % (24h trend) 61 (-6) 87 (0) 61
Wind 20ft/early(mph) E 17 G21 E 18 G23 E 17 G21
Wind 20ft/late(mph) E 17 G21 E 18 G23 E 17 G21
Mixing Hgt(ft-agl/msl)3820 3670
Transport Wnd (mph) E 24 E 23
Vent Rate (kt-ft) 80220 73400
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-260900-
Culebra-
452 AM AST Wed Jun 25 2025
Today Tonight Thu
Cloud Cover Mclear Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 20 30 30
Temp (24h trend) 90 (+2) 77 (-2) 90
RH % (24h trend) 59 (-11) 88 (+1) 59
Wind 20ft/early(mph) E 17 G22 E 18 G23 E 17 G21
Wind 20ft/late(mph) E 17 G22 E 18 G23 E 17 G21
Mixing Hgt(ft-agl/msl)3910 3800
Transport Wnd (mph) E 25 E 24
Vent Rate (kt-ft) 86020 79800
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-260900-
Southwest Coastal Plains and Mona Island-
452 AM AST Wed Jun 25 2025
Today Tonight Thu
Cloud Cover Mclear Mclear Mclear
Precip Type None None Showers
Chance Precip (%) 0 0 30
Temp (24h trend) 92 (+2) 74 (-3) 93
RH % (24h trend) 53 (-9) 86 (+2) 52
Wind 20ft/early(mph) SE 25 G32 E 23 G29 E 24 G32
Wind 20ft/late(mph) SE 25 G32 E 23 G29 E 24 G32
Mixing Hgt(ft-agl/msl)5110 5600
Transport Wnd (mph) E 26 E 16
Vent Rate (kt-ft) 117530 78400
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
VIZ001-260900-
Saint Thomas and Saint John-
452 AM AST Wed Jun 25 2025
Today Tonight Thu
Cloud Cover Mclear Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 10 20 20
Temp (24h trend) 86 (+1) 75 (-4) 86
RH % (24h trend) 65 (-8) 91 (+2) 64
Wind 20ft/early(mph) E 18 G22 E 19 G23 E 17 G22
Wind 20ft/late(mph) E 18 G22 E 19 G23 E 17 G22
Mixing Hgt(ft-agl/msl)4160 3810
Transport Wnd (mph) E 25 E 24
Vent Rate (kt-ft) 91520 80010
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-260900-
St Croix-
452 AM AST Wed Jun 25 2025
Today Tonight Thu
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 10 30 20
Temp (24h trend) 87 (0) 77 (-2) 87
RH % (24h trend) 63 (-7) 89 (+2) 64
Wind 20ft/early(mph) E 18 G23 E 19 G23 E 17 G21
Wind 20ft/late(mph) E 18 G23 E 19 G23 E 17 G21
Mixing Hgt(ft-agl/msl)4810 4900
Transport Wnd (mph) E 28 E 24
Vent Rate (kt-ft) 115440 102900
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$