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

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FNCA52 TJSJ 170808
FWFSJU

Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
408 AM AST Wed Apr 17 2024

.DISCUSSION...

A significant increase of shower and thunderstorm activity due to
unstable weather through today will reduce the chance of fire
weather. Soils should benefit from this rainfall, with improving
KBDI values.


PRZ014-180815-
Southeast Coastal Plains-
408 AM AST Wed Apr 17 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Mclear
Precip Type           Showers      Tstms        Showers
Chance Precip (%)     40           50           10
Temp (24h trend)      87 (+2)      71 (-3)      87
RH % (24h trend)      53 (-10)     89 (+4)      53
Wind 20ft/early(mph)  E  9         NE  6        E  9
Wind 20ft/late(mph)   E  9         NE  6        E  9
Mixing Hgt(ft-agl/msl)4800                      4200
Transport Wnd (mph)   E  3                      E  3
Vent Rate (kt-ft)     14400                     12600
Dispersion            5                         5
DSI                   5            3            5
LAL                   2            2            1
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ015-180815-
Southern Hills-
408 AM AST Wed Apr 17 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Tstms        Showers
Chance Precip (%)     60           50           10
Temp (24h trend)      85 (+5)      68 (-3)      84
RH % (24h trend)      61 (-12)     97 (+5)      62
Wind 20ft/early(mph)  E  8         N  8         NE  6
Wind 20ft/late(mph)   E  8         N  8         NE  6
Mixing Hgt(ft-agl/msl)5500                      4990
Transport Wnd (mph)   E  2                      E  2
Vent Rate (kt-ft)     11000                     9980
Dispersion            5                         5
DSI                   5            2            5
LAL                   2            2            1
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ016-180815-
North Coastal Plains-
408 AM AST Wed Apr 17 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Tstms        Showers
Chance Precip (%)     50           60           20
Temp (24h trend)      85 (+1)      72 (-2)      84
RH % (24h trend)      70 (-6)      98 (+3)      73
Wind 20ft/early(mph)  NE 12        NE 12        NE 10
Wind 20ft/late(mph)   NE 12        NE 12        NE 10
Mixing Hgt(ft-agl/msl)4350                      4130
Transport Wnd (mph)   NE  5                     E  5
Vent Rate (kt-ft)     17400                     16520
Dispersion            5                         5
DSI                   5            3            5
LAL                   2            2            1
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ017-180815-
Northern Hills-
408 AM AST Wed Apr 17 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Mclear
Precip Type           Tstms        Tstms        Showers
Chance Precip (%)     60           50           10
Temp (24h trend)      84 (+2)      69 (-2)      83
RH % (24h trend)      72 (-5)      99 (+1)      77
Wind 20ft/early(mph)  NE 12        NE 11        NE  9
Wind 20ft/late(mph)   NE 12        NE 11        NE  9
Mixing Hgt(ft-agl/msl)5190                      4860
Transport Wnd (mph)   E  3                      E  2
Vent Rate (kt-ft)     15570                     9720
Dispersion            5                         5
DSI                   5            3            5
LAL                   2            2            1
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ018-180815-
West Coast-
408 AM AST Wed Apr 17 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Showers      Showers
Chance Precip (%)     60           20           40
Temp (24h trend)      87 (+2)      70 (-2)      86
RH % (24h trend)      61 (-10)     95 (+2)      63
Wind 20ft/early(mph)  NE 14        NE 14        NE 10
Wind 20ft/late(mph)   NE 14        NE 14        NE 10
Mixing Hgt(ft-agl/msl)4580                      4380
Transport Wnd (mph)   E  2                      SW  2
Vent Rate (kt-ft)     9160                      8760
Dispersion            5                         4
DSI                   5            4            5
LAL                   2            1            1
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ019-180815-
Eastern Interior-
408 AM AST Wed Apr 17 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mcldy        Pcldy
Precip Type           Tstms        Tstms        Showers
Chance Precip (%)     60           60           20
Temp (24h trend)      85 (+3)      69 (-3)      83
RH % (24h trend)      64 (-8)      98 (+2)      70
Wind 20ft/early(mph)  NE  6        N  6         NE  6
Wind 20ft/late(mph)   NE  6        N  6         NE  6
Mixing Hgt(ft-agl/msl)5610                      4600
Transport Wnd (mph)   E  3                      E  3
Vent Rate (kt-ft)     16830                     13800
Dispersion            5                         5
DSI                   5            2            5
LAL                   2            2            1
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ022-180815-
Luquillo Mountain Range-
408 AM AST Wed Apr 17 2024

                      Today        Tonight      Thu

Cloud Cover           Mcldy        Mcldy        Pcldy
Precip Type           Tstms        Tstms        Showers
Chance Precip (%)     60           60           40
Temp (24h trend)      81 (+3)      67 (-3)      79
RH % (24h trend)      69 (-9)      99 (+2)      75
Wind 20ft/early(mph)  NE  5        N  5         NE  5
Wind 20ft/late(mph)   NE  5        N  5         NE  5
Mixing Hgt(ft-agl/msl)4730                      3830
Transport Wnd (mph)   E  3                      E  3
Vent Rate (kt-ft)     14190                     11490
Dispersion            4                         4
DSI                   5            2            5
LAL                   2            2            1
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ023-180815-
Central Mountain Range-
408 AM AST Wed Apr 17 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Mclear
Precip Type           Tstms        Showers      Showers
Chance Precip (%)     70           40           20
Temp (24h trend)      82 (+4)      65 (-4)      82
RH % (24h trend)      68 (-10)     99 (+1)      73
Wind 20ft/early(mph)  NE 13        NE 12        NE  9
Wind 20ft/late(mph)   NE 13        NE 12        NE  9
Mixing Hgt(ft-agl/msl)6180                      5490
Transport Wnd (mph)   SE  1                     SE  1
Vent Rate (kt-ft)     6180                      5490
Dispersion            5                         4
DSI                   5            2            5
LAL                   2            2            1
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ024-180815-
Cayey Mountain Range-
408 AM AST Wed Apr 17 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mcldy        Pcldy
Precip Type           Tstms        Tstms        Showers
Chance Precip (%)     50           60           20
Temp (24h trend)      82 (+3)      67 (-2)      80
RH % (24h trend)      65 (-11)     99 (0)       69
Wind 20ft/early(mph)  E  5         N  5         NE  5
Wind 20ft/late(mph)   E  5         N  5         NE  5
Mixing Hgt(ft-agl/msl)5310                      4480
Transport Wnd (mph)   E  3                      E  2
Vent Rate (kt-ft)     15930                     8960
Dispersion            5                         5
DSI                   5            2            5
LAL                   2            2            1
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ025-180815-
Vieques-
408 AM AST Wed Apr 17 2024

                      Today        Tonight      Thu

Cloud Cover           Mcldy        Mcldy        Pcldy
Precip Type           Tstms        Tstms        Showers
Chance Precip (%)     60           60           40
Temp (24h trend)      86 (+1)      73 (-3)      84
RH % (24h trend)      63 (-3)      91 (+2)      67
Wind 20ft/early(mph)  E  6         NE 10        NE  6
Wind 20ft/late(mph)   E  6         NE 10        NE  6
Mixing Hgt(ft-agl/msl)3010                      2850
Transport Wnd (mph)   NE  8                     NE  7
Vent Rate (kt-ft)     21070                     17100
Dispersion            5                         5
DSI                   6            6            6
LAL                   2            2            1
Haines Index          4            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ026-180815-
Culebra-
408 AM AST Wed Apr 17 2024

                      Today        Tonight      Thu

Cloud Cover           Mcldy        Pcldy        Pcldy
Precip Type           Tstms        Tstms        Showers
Chance Precip (%)     60           50           30
Temp (24h trend)      85 (+1)      74 (-2)      85
RH % (24h trend)      63 (-6)      94 (+5)      66
Wind 20ft/early(mph)  E  6         NE  9        NE  6
Wind 20ft/late(mph)   E  6         NE  9        NE  6
Mixing Hgt(ft-agl/msl)3000                      2920
Transport Wnd (mph)   E  7                      NE  7
Vent Rate (kt-ft)     18000                     17520
Dispersion            5                         5
DSI                   6            6            6
LAL                   2            2            1
Haines Index          4            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ027-180815-
Southwest Coastal Plains and Mona Island-
408 AM AST Wed Apr 17 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Showers      Showers
Chance Precip (%)     50           20           30
Temp (24h trend)      89 (+2)      72 (-2)      89
RH % (24h trend)      50 (-10)     87 (+1)      49
Wind 20ft/early(mph)  E 14 G17     NE 16 G18    SE 10
Wind 20ft/late(mph)   E 14 G17     NE 16 G18    SE 10
Mixing Hgt(ft-agl/msl)4790                      4860
Transport Wnd (mph)   SE  3                     SE  3
Vent Rate (kt-ft)     14370                     14580
Dispersion            5                         5
DSI                   5            2            5
LAL                   2            1            1
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

VIZ001-180815-
Saint Thomas and Saint John-
408 AM AST Wed Apr 17 2024

                      Today        Tonight      Thu

Cloud Cover           Mcldy        Pcldy        Pcldy
Precip Type           Tstms        Showers      Showers
Chance Precip (%)     60           40           30
Temp (24h trend)      84 (0)       74 (-2)      83
RH % (24h trend)      65 (-2)      92 (+4)      67
Wind 20ft/early(mph)  E  6         NE  9        NE  6
Wind 20ft/late(mph)   E  6         NE  9        NE  6
Mixing Hgt(ft-agl/msl)2860                      2880
Transport Wnd (mph)   N  7                      NE  7
Vent Rate (kt-ft)     17160                     17280
Dispersion            5                         5
DSI                   5            6            6
LAL                   2            1            1
Haines Index          4            3            3
RH Recovery                        Excellent

Remarks...None.

$$

VIZ002-180815-
St Croix-
408 AM AST Wed Apr 17 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Showers      Showers
Chance Precip (%)     60           40           30
Temp (24h trend)      86 (+1)      74 (-3)      85
RH % (24h trend)      66 (-2)      90 (+3)      68
Wind 20ft/early(mph)  E  5         NE  6        NE  5
Wind 20ft/late(mph)   E  5         NE  6        NE  5
Mixing Hgt(ft-agl/msl)4270                      4360
Transport Wnd (mph)   SE  5                     E  5
Vent Rate (kt-ft)     17080                     17440
Dispersion            5                         5
DSI                   6            5            6
LAL                   2            1            1
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$


$$


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