Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR

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FNCA52 TJSJ 230837
FWFSJU

Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
437 AM AST Sun Jun 23 2024

.DISCUSSION...

The KBDI at Guanica was at 509 yesterday and less than 370
elsewhere. East winds with sea breeze variations are expected to
range between 12-16 mph with higher gusts along the southern coast
of Puerto Rico. Although drier air is still present over the area,
moisture content will gradually increase under a southeasterly
component in the wind today, and relative humidities should not
reach critical fire weather thresholds. Therefore, a low fire
weather risk continues across the islands today.


PRZ014-240845-
Southeast Coastal Plains-
437 AM AST Sun Jun 23 2024

                      Today        Tonight      Mon

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     50           50           60
Temp (24h trend)      93 (+4)      75 (-1)      93
RH % (24h trend)      56 (-9)      98 (+9)      57
Wind 20ft/early(mph)  E 14 G20     E 12         E 14 G19
Wind 20ft/late(mph)   E 14 G20     E 12         E 14 G19
Mixing Hgt(ft-agl/msl)4540                      4620
Transport Wnd (mph)   E 16                      E 17
Vent Rate (kt-ft)     63560                     69300
Dispersion            5                         5
DSI                   6            5            6
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ015-240845-
Southern Hills-
437 AM AST Sun Jun 23 2024

                      Today        Tonight      Mon

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     50           30           60
Temp (24h trend)      88 (+3)      72 (-1)      89
RH % (24h trend)      63 (-6)      99 (+4)      63
Wind 20ft/early(mph)  E 12         E 11         E 12
Wind 20ft/late(mph)   E 12         E 11         E 12
Mixing Hgt(ft-agl/msl)5300                      5300
Transport Wnd (mph)   E 16                      E 16
Vent Rate (kt-ft)     74200                     74200
Dispersion            5                         5
DSI                   5            3            6
LAL                   3            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ016-240845-
North Coastal Plains-
437 AM AST Sun Jun 23 2024

                      Today        Tonight      Mon

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     60           30           60
Temp (24h trend)      91 (+3)      75 (-1)      93
RH % (24h trend)      65 (-8)      100 (+4)     64
Wind 20ft/early(mph)  E 18         E 16         E 18
Wind 20ft/late(mph)   E 18         E 16         E 18
Mixing Hgt(ft-agl/msl)4760                      4530
Transport Wnd (mph)   E 14                      E 16
Vent Rate (kt-ft)     57120                     63420
Dispersion            5                         5
DSI                   6            5            6
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ017-240845-
Northern Hills-
437 AM AST Sun Jun 23 2024

                      Today        Tonight      Mon

Cloud Cover           Pcldy        Mclear       Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     70           10           70
Temp (24h trend)      90 (+4)      73 (-1)      91
RH % (24h trend)      65 (-7)      100 (+2)     63
Wind 20ft/early(mph)  E 16         E 13         E 16
Wind 20ft/late(mph)   E 16         E 13         E 16
Mixing Hgt(ft-agl/msl)5710                      5610
Transport Wnd (mph)   E 13                      E 14
Vent Rate (kt-ft)     62810                     67320
Dispersion            5                         5
DSI                   5            3            6
LAL                   3            1            2
Haines Index          3            4            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ018-240845-
West Coast-
437 AM AST Sun Jun 23 2024

                      Today        Tonight      Mon

Cloud Cover           Pcldy        Mclear       Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     90           10           70
Temp (24h trend)      91 (+1)      75 (0)       92
RH % (24h trend)      63 (-3)      98 (+4)      62
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)4830                      4550
Transport Wnd (mph)   E 12                      E 14
Vent Rate (kt-ft)     48300                     54600
Dispersion            5                         5
DSI                   5            4            6
LAL                   3            2            2
Haines Index          3            4            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ019-240845-
Eastern Interior-
437 AM AST Sun Jun 23 2024

                      Today        Tonight      Mon

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     60           60           60
Temp (24h trend)      89 (+3)      73 (-1)      90
RH % (24h trend)      66 (-4)      100 (+2)     65
Wind 20ft/early(mph)  E 12         E 12         SE 13
Wind 20ft/late(mph)   E 12         E 12         SE 13
Mixing Hgt(ft-agl/msl)5460                      5250
Transport Wnd (mph)   E 15                      SE 17
Vent Rate (kt-ft)     70980                     78750
Dispersion            5                         5
DSI                   5            4            6
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ022-240845-
Luquillo Mountain Range-
437 AM AST Sun Jun 23 2024

                      Today        Tonight      Mon

Cloud Cover           Mcldy        Mcldy        Pcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     60           60           60
Temp (24h trend)      86 (+4)      72 (-1)      86
RH % (24h trend)      68 (-4)      100 (+2)     69
Wind 20ft/early(mph)  E 11         E 10         SE 11
Wind 20ft/late(mph)   E 11         E 10         SE 11
Mixing Hgt(ft-agl/msl)3630                      3430
Transport Wnd (mph)   E 16                      E 17
Vent Rate (kt-ft)     50820                     51450
Dispersion            5                         5
DSI                   6            5            6
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ023-240845-
Central Mountain Range-
437 AM AST Sun Jun 23 2024

                      Today        Tonight      Mon

Cloud Cover           Pcldy        Mclear       Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     80           10           70
Temp (24h trend)      86 (+3)      69 (-2)      88
RH % (24h trend)      68 (-5)      100 (+1)     65
Wind 20ft/early(mph)  E  9         E  8         SE 10
Wind 20ft/late(mph)   E  9         E  8         SE 10
Mixing Hgt(ft-agl/msl)6770                      6440
Transport Wnd (mph)   E 12                      SE 13
Vent Rate (kt-ft)     67700                     70840
Dispersion            5                         5
DSI                   5            2            5
LAL                   3            1            2
Haines Index          3            4            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ024-240845-
Cayey Mountain Range-
437 AM AST Sun Jun 23 2024

                      Today        Tonight      Mon

Cloud Cover           Mcldy        Mcldy        Pcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     60           60           60
Temp (24h trend)      86 (+3)      71 (-1)      86
RH % (24h trend)      69 (-1)      100 (0)      69
Wind 20ft/early(mph)  E 10         E  9         E 11
Wind 20ft/late(mph)   E 10         E  9         E 11
Mixing Hgt(ft-agl/msl)4420                      4120
Transport Wnd (mph)   E 16                      E 17
Vent Rate (kt-ft)     61880                     61800
Dispersion            5                         5
DSI                   6            4            6
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ025-240845-
Vieques-
437 AM AST Sun Jun 23 2024

                      Today        Tonight      Mon

Cloud Cover           Mcldy        Mcldy        Pcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     60           60           60
Temp (24h trend)      92 (+1)      78 (0)       92
RH % (24h trend)      64 (+2)      93 (-2)      64
Wind 20ft/early(mph)  E 14 G18     E 16 G20     E 16 G19
Wind 20ft/late(mph)   E 14 G18     E 16 G20     E 16 G19
Mixing Hgt(ft-agl/msl)2950                      2790
Transport Wnd (mph)   E 17                      E 20
Vent Rate (kt-ft)     44250                     47430
Dispersion            5                         5
DSI                   6            6            6
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ026-240845-
Culebra-
437 AM AST Sun Jun 23 2024

                      Today        Tonight      Mon

Cloud Cover           Mcldy        Mcldy        Pcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     60           60           60
Temp (24h trend)      94 (+3)      80 (0)       93
RH % (24h trend)      57 (-7)      93 (+1)      58
Wind 20ft/early(mph)  E 14 G19     E 17 G21     E 16 G20
Wind 20ft/late(mph)   E 14 G19     E 17 G21     E 16 G20
Mixing Hgt(ft-agl/msl)3010                      2830
Transport Wnd (mph)   E 18                      E 21
Vent Rate (kt-ft)     48160                     50940
Dispersion            5                         5
DSI                   6            6            6
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ027-240845-
Southwest Coastal Plains and Mona Island-
437 AM AST Sun Jun 23 2024

                      Today        Tonight      Mon

Cloud Cover           Pcldy        Mclear       Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     30           10           30
Temp (24h trend)      94 (+3)      76 (0)       94
RH % (24h trend)      58 (-4)      95 (+8)      58
Wind 20ft/early(mph)  E 18 G23     E 17 G21     E 19 G24
Wind 20ft/late(mph)   E 18 G23     E 17 G21     E 19 G24
Mixing Hgt(ft-agl/msl)4870                      4890
Transport Wnd (mph)   E 18                      E 20
Vent Rate (kt-ft)     77920                     83130
Dispersion            5                         5
DSI                   6            5            6
LAL                   2            1            2
Haines Index          4            4            3
RH Recovery                        Excellent

Remarks...None.

$$

VIZ001-240845-
Saint Thomas and Saint John-
437 AM AST Sun Jun 23 2024

                      Today        Tonight      Mon

Cloud Cover           Pcldy        Mcldy        Mcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     60           60           60
Temp (24h trend)      90 (+1)      78 (-2)      92
RH % (24h trend)      62 (-1)      94 (+2)      60
Wind 20ft/early(mph)  E 14 G19     E 17 G21     E 16 G20
Wind 20ft/late(mph)   E 14 G19     E 17 G21     E 16 G20
Mixing Hgt(ft-agl/msl)3080                      2840
Transport Wnd (mph)   E 20                      E 22
Vent Rate (kt-ft)     52360                     53960
Dispersion            5                         5
DSI                   6            6            6
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

VIZ002-240845-
St Croix-
437 AM AST Sun Jun 23 2024

                      Today        Tonight      Mon

Cloud Cover           Pcldy        Mcldy        Mcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     60           60           60
Temp (24h trend)      93 (+2)      80 (0)       92
RH % (24h trend)      63 (0)       92 (+3)      65
Wind 20ft/early(mph)  E 14 G18     E 16         E 17 G20
Wind 20ft/late(mph)   E 14 G18     E 16         E 17 G20
Mixing Hgt(ft-agl/msl)4330                      4230
Transport Wnd (mph)   E 20                      E 22
Vent Rate (kt-ft)     73610                     80370
Dispersion            5                         5
DSI                   6            6            6
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$


$$