Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
187
FNCA52 TJSJ 140904
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
504 AM AST Sat Jun 14 2025
.DISCUSSION...
Todays weather conditions are expected to remain largely similar to
yesterday, with a slight increase in dryness across southern Puerto
Rico. Very dry fuels continue, as indicated by elevated KBDI values,
574 at Cabo Rojo and 611 at Guanica, both signaling critical fire
weather conditions. These values, in conjunction with continued
rainfall deficits over the past 30 to 60 days across this region,
point to enhanced wildfire potential.
Breezy to locally windy conditions, low relative humidity, and poor
fuel moisture recovery will continue to support rapid fire spread,
especially across the southwestern coastal plains and adjacent
hills. Notably, fire activity was reported in these areas yesterday,
and similar activity is possible again today under these conditions.
While dry and breezy conditions will persist through today, a
gradual increase in moisture is expected to begin on Sunday, which
may begin to ease fire weather concerns in the coming days.
Nevertheless, for today, elevated fire weather remains a concern,
and a Fire Danger Statement is in effect for the southern coastal
plains and hills of Puerto Rico.
Residents and land management officials should continue to exercise
caution and follow any guidance in place. Refer to the latest Fire
Danger Statement (RFDSJU) for more information.
PRZ014-150915-
Southeast Coastal Plains-
504 AM AST Sat Jun 14 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 30 10 40
Temp (24h trend) 91 (+2) 73 (-1) 90
RH % (24h trend) 40 (-14) 91 (+6) 53
Wind 20ft/early(mph) E 14 G22 E 11 E 13 G22
Wind 20ft/late(mph) E 14 G22 E 11 E 13 G22
Mixing Hgt(ft-agl/msl)5510 4920
Transport Wnd (mph) E 15 E 15
Vent Rate (kt-ft) 71630 63960
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ015-150915-
Southern Hills-
504 AM AST Sat Jun 14 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 30 10 40
Temp (24h trend) 86 (+2) 69 (-2) 86
RH % (24h trend) 54 (-10) 97 (+5) 60
Wind 20ft/early(mph) E 13 E 11 E 12
Wind 20ft/late(mph) E 13 E 11 E 12
Mixing Hgt(ft-agl/msl)6180 5220
Transport Wnd (mph) E 14 E 14
Vent Rate (kt-ft) 74160 62640
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ016-150915-
North Coastal Plains-
504 AM AST Sat Jun 14 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 30 50
Temp (24h trend) 88 (0) 72 (-2) 88
RH % (24h trend) 59 (-5) 97 (+4) 62
Wind 20ft/early(mph) E 19 G22 E 18 E 18
Wind 20ft/late(mph) E 19 G22 E 18 E 18
Mixing Hgt(ft-agl/msl)5140 5000
Transport Wnd (mph) E 17 E 15
Vent Rate (kt-ft) 77100 65000
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ017-150915-
Northern Hills-
504 AM AST Sat Jun 14 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 10 60
Temp (24h trend) 86 (+1) 70 (-1) 86
RH % (24h trend) 61 (-6) 98 (+1) 64
Wind 20ft/early(mph) E 18 E 16 E 16
Wind 20ft/late(mph) E 18 E 16 E 16
Mixing Hgt(ft-agl/msl)5710 5910
Transport Wnd (mph) E 14 E 12
Vent Rate (kt-ft) 68520 59100
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ018-150915-
West Coast-
504 AM AST Sat Jun 14 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms Showers Showers
Chance Precip (%) 60 10 50
Temp (24h trend) 90 (+1) 70 (-1) 89
RH % (24h trend) 55 (-6) 95 (+1) 59
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)5230 4720
Transport Wnd (mph) E 9 E 12
Vent Rate (kt-ft) 41840 47200
Dispersion 5 5
DSI 5 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ019-150915-
Eastern Interior-
504 AM AST Sat Jun 14 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 50 50
Temp (24h trend) 86 (+1) 70 (-2) 86
RH % (24h trend) 60 (-6) 98 (+5) 64
Wind 20ft/early(mph) E 12 E 12 E 12
Wind 20ft/late(mph) E 12 E 12 E 12
Mixing Hgt(ft-agl/msl)5220 5480
Transport Wnd (mph) E 16 E 14
Vent Rate (kt-ft) 73080 65760
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ022-150915-
Luquillo Mountain Range-
504 AM AST Sat Jun 14 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 50 50
Temp (24h trend) 81 (+3) 68 (-2) 81
RH % (24h trend) 69 (-8) 100 (+4) 73
Wind 20ft/early(mph) E 11 E 10 E 11
Wind 20ft/late(mph) E 11 E 10 E 11
Mixing Hgt(ft-agl/msl)4480 4460
Transport Wnd (mph) E 16 E 15
Vent Rate (kt-ft) 62720 57980
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ023-150915-
Central Mountain Range-
504 AM AST Sat Jun 14 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 10 50
Temp (24h trend) 84 (+3) 66 (-3) 84
RH % (24h trend) 60 (-8) 99 (+1) 63
Wind 20ft/early(mph) E 10 E 10 E 10
Wind 20ft/late(mph) E 10 E 10 E 10
Mixing Hgt(ft-agl/msl)6710 6810
Transport Wnd (mph) E 9 E 8
Vent Rate (kt-ft) 53680 47670
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ024-150915-
Cayey Mountain Range-
504 AM AST Sat Jun 14 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 30 40 50
Temp (24h trend) 82 (+2) 68 (-2) 81
RH % (24h trend) 67 (-6) 100 (+2) 71
Wind 20ft/early(mph) E 12 E 10 E 10
Wind 20ft/late(mph) E 12 E 10 E 10
Mixing Hgt(ft-agl/msl)4870 4900
Transport Wnd (mph) E 17 E 15
Vent Rate (kt-ft) 73050 63700
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ025-150915-
Vieques-
504 AM AST Sat Jun 14 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 40 40
Temp (24h trend) 86 (0) 75 (-1) 86
RH % (24h trend) 60 (-4) 88 (+4) 63
Wind 20ft/early(mph) E 14 G19 E 16 G19 E 14 G18
Wind 20ft/late(mph) E 14 G19 E 16 G19 E 14 G18
Mixing Hgt(ft-agl/msl)4100 3640
Transport Wnd (mph) E 18 E 18
Vent Rate (kt-ft) 65600 58240
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-150915-
Culebra-
504 AM AST Sat Jun 14 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 50 30 40
Temp (24h trend) 88 (+1) 76 (-1) 89
RH % (24h trend) 58 (-7) 90 (+5) 59
Wind 20ft/early(mph) E 14 G19 E 14 G19 E 14 G18
Wind 20ft/late(mph) E 14 G19 E 14 G19 E 14 G18
Mixing Hgt(ft-agl/msl)4140 3620
Transport Wnd (mph) E 18 E 20
Vent Rate (kt-ft) 66240 61540
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-150915-
Southwest Coastal Plains and Mona Island-
504 AM AST Sat Jun 14 2025
Today Tonight Sun
Cloud Cover Pcldy Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 40 10 30
Temp (24h trend) 91 (+1) 73 (-1) 91
RH % (24h trend) 42 (-10) 87 (+2) 55
Wind 20ft/early(mph) E 17 G25 E 11 G17 E 17 G24
Wind 20ft/late(mph) E 17 G25 E 11 G17 E 17 G24
Mixing Hgt(ft-agl/msl)6150 5000
Transport Wnd (mph) E 15 E 17
Vent Rate (kt-ft) 79950 75000
Dispersion 5 5
DSI 5 4 6
RH Recovery Excellent
Remarks...None.
$$
VIZ001-150915-
Saint Thomas and Saint John-
504 AM AST Sat Jun 14 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 40 30 30
Temp (24h trend) 86 (+1) 74 (-3) 86
RH % (24h trend) 62 (-4) 92 (+8) 64
Wind 20ft/early(mph) E 16 G20 E 16 G20 E 14 G18
Wind 20ft/late(mph) E 16 G20 E 16 G20 E 14 G18
Mixing Hgt(ft-agl/msl)3940 3610
Transport Wnd (mph) E 20 E 20
Vent Rate (kt-ft) 66980 61370
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-150915-
St Croix-
504 AM AST Sat Jun 14 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 20 40 50
Temp (24h trend) 86 (0) 75 (-2) 87
RH % (24h trend) 62 (-4) 88 (+4) 66
Wind 20ft/early(mph) E 16 G19 E 16 G18 E 14 G18
Wind 20ft/late(mph) E 16 G19 E 16 G18 E 14 G18
Mixing Hgt(ft-agl/msl)4350 4230
Transport Wnd (mph) E 21 E 21
Vent Rate (kt-ft) 78300 76140
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$