Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
087
FNCA52 TJSJ 300853
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
453 AM AST Mon Jun 30 2025
.DISCUSSION...
Little to no rainfall is anticipated across the southern sections
of Puerto Rico. Dry air with Saharan Dust particulates is also
filtering into the region. Relative humidities can drop to near
44 to 50%. Wind speeds can reach around 16 to 21 mph with gusts
near 30 mph. KBDI values in Guanica and Cabo Rojo remains above
critical fire weather thresholds (661 and 628 respectively).
Therefore, weather conditions should be favorable for the spread
of wildfires along the Southern Coastal Plains of Puerto Rico. A
Fire Danger Statement has been issued (RFDSJU).
PRZ014-010900-
Southeast Coastal Plains-
453 AM AST Mon Jun 30 2025
Today Tonight Tue
Cloud Cover Mclear Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 20 10 10
Temp (24h trend) 92 (+4) 74 (-2) 92
RH % (24h trend) 44 (-15) 84 (-2) 44
Wind 20ft/early(mph) E 18 G23 E 14 G19 E 20 G27
Wind 20ft/late(mph) E 18 G23 E 14 G19 E 20 G27
Mixing Hgt(ft-agl/msl)5070 5350
Transport Wnd (mph) E 21 E 21
Vent Rate (kt-ft) 91260 96300
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ015-010900-
Southern Hills-
453 AM AST Mon Jun 30 2025
Today Tonight Tue
Cloud Cover Mclear Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 20 0 20
Temp (24h trend) 88 (+5) 70 (-3) 88
RH % (24h trend) 56 (-18) 93 (0) 53
Wind 20ft/early(mph) E 13 E 13 E 16
Wind 20ft/late(mph) E 13 E 13 E 16
Mixing Hgt(ft-agl/msl)5210 5950
Transport Wnd (mph) E 20 E 18
Vent Rate (kt-ft) 88570 95200
Dispersion 5 5
DSI 6 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ016-010900-
North Coastal Plains-
453 AM AST Mon Jun 30 2025
Today Tonight Tue
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 10 20 20
Temp (24h trend) 90 (+2) 74 (-2) 88
RH % (24h trend) 61 (-10) 93 (-2) 61
Wind 20ft/early(mph) E 20 G23 E 20 E 19 G23
Wind 20ft/late(mph) E 20 G23 E 20 E 19 G23
Mixing Hgt(ft-agl/msl)5220 4750
Transport Wnd (mph) E 18 E 21
Vent Rate (kt-ft) 83520 85500
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ017-010900-
Northern Hills-
453 AM AST Mon Jun 30 2025
Today Tonight Tue
Cloud Cover Mclear Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 10 10 20
Temp (24h trend) 88 (+3) 71 (-2) 87
RH % (24h trend) 63 (-11) 96 (-2) 61
Wind 20ft/early(mph) E 19 E 17 NE 18
Wind 20ft/late(mph) E 19 E 17 NE 18
Mixing Hgt(ft-agl/msl)5710 5440
Transport Wnd (mph) E 16 E 18
Vent Rate (kt-ft) 79940 87040
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ018-010900-
West Coast-
453 AM AST Mon Jun 30 2025
Today Tonight Tue
Cloud Cover Pcldy Pcldy Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 50 20 40
Temp (24h trend) 92 (+3) 71 (-2) 92
RH % (24h trend) 56 (-12) 95 (-1) 54
Wind 20ft/early(mph) E 16 E 16 E 16
Wind 20ft/late(mph) E 16 E 16 E 16
Mixing Hgt(ft-agl/msl)4870 3320
Transport Wnd (mph) E 15 E 10
Vent Rate (kt-ft) 63310 29880
Dispersion 5 5
DSI 6 4 5
RH Recovery Excellent
Remarks...None.
$$
PRZ019-010900-
Eastern Interior-
453 AM AST Mon Jun 30 2025
Today Tonight Tue
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 20 20 30
Temp (24h trend) 88 (+4) 72 (-3) 87
RH % (24h trend) 61 (-12) 94 (0) 60
Wind 20ft/early(mph) E 14 E 13 E 14
Wind 20ft/late(mph) E 14 E 13 E 14
Mixing Hgt(ft-agl/msl)5320 5980
Transport Wnd (mph) E 18 E 17
Vent Rate (kt-ft) 85120 89700
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ022-010900-
Luquillo Mountain Range-
453 AM AST Mon Jun 30 2025
Today Tonight Tue
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 30 20 40
Temp (24h trend) 83 (+4) 70 (-2) 83
RH % (24h trend) 68 (-15) 99 (+1) 67
Wind 20ft/early(mph) E 13 E 11 E 12
Wind 20ft/late(mph) E 13 E 11 E 12
Mixing Hgt(ft-agl/msl)4950 4820
Transport Wnd (mph) E 20 E 17
Vent Rate (kt-ft) 84150 72300
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ023-010900-
Central Mountain Range-
453 AM AST Mon Jun 30 2025
Today Tonight Tue
Cloud Cover Pcldy Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 20 0 20
Temp (24h trend) 88 (+7) 68 (-3) 87
RH % (24h trend) 61 (-16) 97 (-1) 59
Wind 20ft/early(mph) E 12 E 12 E 13
Wind 20ft/late(mph) E 12 E 12 E 13
Mixing Hgt(ft-agl/msl)6530 7440
Transport Wnd (mph) E 13 E 14
Vent Rate (kt-ft) 71830 89280
Dispersion 5 5
DSI 6 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ024-010900-
Cayey Mountain Range-
453 AM AST Mon Jun 30 2025
Today Tonight Tue
Cloud Cover Mclear Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 20 20 30
Temp (24h trend) 83 (+4) 70 (-2) 83
RH % (24h trend) 67 (-15) 97 (-2) 64
Wind 20ft/early(mph) E 12 E 11 E 13
Wind 20ft/late(mph) E 12 E 11 E 13
Mixing Hgt(ft-agl/msl)4920 5160
Transport Wnd (mph) E 21 E 20
Vent Rate (kt-ft) 88560 87720
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ025-010900-
Vieques-
453 AM AST Mon Jun 30 2025
Today Tonight Tue
Cloud Cover Mclear Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 20 20 40
Temp (24h trend) 89 (+2) 77 (-1) 90
RH % (24h trend) 57 (-10) 87 (+1) 55
Wind 20ft/early(mph) E 16 G20 E 18 G21 E 14 G19
Wind 20ft/late(mph) E 16 G20 E 18 G21 E 14 G19
Mixing Hgt(ft-agl/msl)3330 4100
Transport Wnd (mph) E 22 E 18
Vent Rate (kt-ft) 63270 65600
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-010900-
Culebra-
453 AM AST Mon Jun 30 2025
Today Tonight Tue
Cloud Cover Mclear Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 10 20 40
Temp (24h trend) 91 (+3) 77 (-2) 91
RH % (24h trend) 59 (-9) 88 (+2) 58
Wind 20ft/early(mph) E 16 G20 E 19 G23 E 14 G19
Wind 20ft/late(mph) E 16 G20 E 19 G23 E 14 G19
Mixing Hgt(ft-agl/msl)3190 4230
Transport Wnd (mph) E 21 E 20
Vent Rate (kt-ft) 57420 71910
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-010900-
Southwest Coastal Plains and Mona Island-
453 AM AST Mon Jun 30 2025
Today Tonight Tue
Cloud Cover Mclear Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 10 10 20
Temp (24h trend) 93 (+4) 74 (-3) 93
RH % (24h trend) 47 (-12) 83 (-1) 45
Wind 20ft/early(mph) SE 21 G27 E 20 G25 E 23 G29
Wind 20ft/late(mph) SE 21 G27 E 20 G25 E 23 G29
Mixing Hgt(ft-agl/msl)5080 3990
Transport Wnd (mph) E 23 E 20
Vent Rate (kt-ft) 101600 67830
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
VIZ001-010900-
Saint Thomas and Saint John-
453 AM AST Mon Jun 30 2025
Today Tonight Tue
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 10 20 30
Temp (24h trend) 87 (+2) 75 (-3) 86
RH % (24h trend) 64 (-8) 91 (+3) 63
Wind 20ft/early(mph) E 16 G20 E 18 G23 E 16 G20
Wind 20ft/late(mph) E 16 G20 E 18 G23 E 16 G20
Mixing Hgt(ft-agl/msl)3020 4200
Transport Wnd (mph) E 22 E 18
Vent Rate (kt-ft) 57380 67200
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-010900-
St Croix-
453 AM AST Mon Jun 30 2025
Today Tonight Tue
Cloud Cover Mclear Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 10 10 20
Temp (24h trend) 90 (+4) 76 (-3) 89
RH % (24h trend) 57 (-13) 88 (+2) 56
Wind 20ft/early(mph) E 16 G20 E 17 G21 E 16 G20
Wind 20ft/late(mph) E 16 G20 E 17 G21 E 16 G20
Mixing Hgt(ft-agl/msl)5270 4620
Transport Wnd (mph) E 24 E 20
Vent Rate (kt-ft) 110670 78540
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$