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

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3
628
FNCA52 TJSJ 040701
FWFSJU

Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
Issued by National Weather Service Miami FL
301 AM AST Wed Jun 4 2025

.DISCUSSION...

Breezy conditions are persisting across the region. However, an
areas of moisture moving across the islands will keep relative
humidities above 50%. KBDI values remain below the criteria for
fire danger statements. Therefore, the risk will be low for today.


PRZ014-050715-
Southeast Coastal Plains-
301 AM AST Wed Jun 4 2025

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mclear       Mclear
Precip Type           Showers      Showers      Showers
Chance Precip (%)     20           20           20
Temp (24h trend)      90 (+1)      72 (-3)      91
RH % (24h trend)      52 (+1)      91 (+17)     50
Wind 20ft/early(mph)  E 18 G23     E 14 G18     E 18 G24
Wind 20ft/late(mph)   E 18 G23     E 14 G18     E 18 G24
Mixing Hgt(ft-agl/msl)5630                      5590
Transport Wnd (mph)   E 21                      E 15
Vent Rate (kt-ft)     101340                    72670
Dispersion            5                         5
DSI                   6            4            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ015-050715-
Southern Hills-
301 AM AST Wed Jun 4 2025

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mclear       Mclear
Precip Type           Showers      Showers      Showers
Chance Precip (%)     30           10           10
Temp (24h trend)      86 (+2)      68 (-4)      87
RH % (24h trend)      56 (-5)      96 (+17)     55
Wind 20ft/early(mph)  E 16         NE 13        E 13
Wind 20ft/late(mph)   E 16         NE 13        E 13
Mixing Hgt(ft-agl/msl)6170                      6230
Transport Wnd (mph)   E 20                      E 13
Vent Rate (kt-ft)     104890                    68530
Dispersion            5                         5
DSI                   6            3            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ016-050715-
North Coastal Plains-
301 AM AST Wed Jun 4 2025

                      Today        Tonight      Thu

Cloud Cover           Mclear       Mclear       Clear
Precip Type           Showers      Showers      None
Chance Precip (%)     20           0            0
Temp (24h trend)      89 (+1)      71 (-4)      88
RH % (24h trend)      60 (-1)      98 (+15)     61
Wind 20ft/early(mph)  E 21 G24     E 20 G23     E 19 G22
Wind 20ft/late(mph)   E 21 G24     E 20 G23     E 19 G22
Mixing Hgt(ft-agl/msl)5700                      5430
Transport Wnd (mph)   E 21                      E 15
Vent Rate (kt-ft)     102600                    70590
Dispersion            5                         5
DSI                   6            5            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ017-050715-
Northern Hills-
301 AM AST Wed Jun 4 2025

                      Today        Tonight      Thu

Cloud Cover           Mclear       Clear        Clear
Precip Type           Showers      None         None
Chance Precip (%)     20           0            0
Temp (24h trend)      88 (+2)      69 (-3)      86
RH % (24h trend)      61 (-1)      99 (+15)     60
Wind 20ft/early(mph)  E 19         E 18         NE 16
Wind 20ft/late(mph)   E 19         E 18         NE 16
Mixing Hgt(ft-agl/msl)6220                      6260
Transport Wnd (mph)   E 18                      E 12
Vent Rate (kt-ft)     99520                     62600
Dispersion            5                         5
DSI                   6            5            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ018-050715-
West Coast-
301 AM AST Wed Jun 4 2025

                      Today        Tonight      Thu

Cloud Cover           Mclear       Mclear       Mclear
Precip Type           Showers      Showers      Showers
Chance Precip (%)     50           10           20
Temp (24h trend)      90 (0)       69 (-3)      91
RH % (24h trend)      56 (-5)      98 (+18)     55
Wind 20ft/early(mph)  E 17         E 18         E 13
Wind 20ft/late(mph)   E 17         E 18         E 13
Mixing Hgt(ft-agl/msl)5780                      5510
Transport Wnd (mph)   E 15                      E  9
Vent Rate (kt-ft)     75140                     44080
Dispersion            5                         5
DSI                   6            4            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ019-050715-
Eastern Interior-
301 AM AST Wed Jun 4 2025

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mclear       Mclear
Precip Type           Showers      Showers      Showers
Chance Precip (%)     30           20           30
Temp (24h trend)      86 (+1)      69 (-4)      87
RH % (24h trend)      63 (+1)      97 (+13)     61
Wind 20ft/early(mph)  E 16         E 14         E 12
Wind 20ft/late(mph)   E 16         E 14         E 12
Mixing Hgt(ft-agl/msl)6150                      6510
Transport Wnd (mph)   E 20                      E 13
Vent Rate (kt-ft)     104550                    71610
Dispersion            5                         5
DSI                   6            3            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ022-050715-
Luquillo Mountain Range-
301 AM AST Wed Jun 4 2025

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mclear       Mclear
Precip Type           Showers      Showers      Showers
Chance Precip (%)     30           20           30
Temp (24h trend)      82 (+2)      68 (-3)      83
RH % (24h trend)      72 (0)       98 (+7)      68
Wind 20ft/early(mph)  E 14         E 12         E 11
Wind 20ft/late(mph)   E 14         E 12         E 11
Mixing Hgt(ft-agl/msl)4810                      5130
Transport Wnd (mph)   E 21                      E 14
Vent Rate (kt-ft)     86580                     61560
Dispersion            5                         5
DSI                   6            4            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ023-050715-
Central Mountain Range-
301 AM AST Wed Jun 4 2025

                      Today        Tonight      Thu

Cloud Cover           Mclear       Clear        Mclear
Precip Type           Showers      None         Showers
Chance Precip (%)     40           0            10
Temp (24h trend)      85 (+3)      65 (-4)      86
RH % (24h trend)      60 (-4)      100 (+17)    58
Wind 20ft/early(mph)  E 12         E 14         E 10
Wind 20ft/late(mph)   E 12         E 14         E 10
Mixing Hgt(ft-agl/msl)6760                      7450
Transport Wnd (mph)   E 16                      E  8
Vent Rate (kt-ft)     94640                     52150
Dispersion            5                         5
DSI                   6            3            5
RH Recovery                        Excellent

Remarks...None.

$$

PRZ024-050715-
Cayey Mountain Range-
301 AM AST Wed Jun 4 2025

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mclear       Mclear
Precip Type           Showers      Showers      Showers
Chance Precip (%)     30           20           30
Temp (24h trend)      82 (+1)      69 (-2)      82
RH % (24h trend)      69 (0)       97 (+10)     66
Wind 20ft/early(mph)  E 13         E 11         E 11
Wind 20ft/late(mph)   E 13         E 11         E 11
Mixing Hgt(ft-agl/msl)5370                      5540
Transport Wnd (mph)   E 21                      E 14
Vent Rate (kt-ft)     96660                     66480
Dispersion            5                         5
DSI                   6            3            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ025-050715-
Vieques-
301 AM AST Wed Jun 4 2025

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mclear       Mclear
Precip Type           Showers      Showers      Showers
Chance Precip (%)     30           30           30
Temp (24h trend)      86 (-2)      75 (-1)      88
RH % (24h trend)      62 (+3)      85 (0)       59
Wind 20ft/early(mph)  E 18 G23     E 17 G21     E 13 G17
Wind 20ft/late(mph)   E 18 G23     E 17 G21     E 13 G17
Mixing Hgt(ft-agl/msl)3960                      4050
Transport Wnd (mph)   E 22                      E 18
Vent Rate (kt-ft)     75240                     64800
Dispersion            5                         5
DSI                   6            6            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ026-050715-
Culebra-
301 AM AST Wed Jun 4 2025

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mclear       Pcldy
Precip Type           Showers      Showers      Showers
Chance Precip (%)     40           30           30
Temp (24h trend)      88 (0)       75 (-2)      90
RH % (24h trend)      62 (+1)      89 (+3)      58
Wind 20ft/early(mph)  E 18 G23     E 17 G21     E 13 G17
Wind 20ft/late(mph)   E 18 G23     E 17 G21     E 13 G17
Mixing Hgt(ft-agl/msl)4070                      3840
Transport Wnd (mph)   E 22                      E 17
Vent Rate (kt-ft)     77330                     57600
Dispersion            5                         5
DSI                   6            6            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ027-050715-
Southwest Coastal Plains and Mona Island-
301 AM AST Wed Jun 4 2025

                      Today        Tonight      Thu

Cloud Cover           Mclear       Mclear       Clear
Precip Type           Showers      Showers      None
Chance Precip (%)     20           20           0
Temp (24h trend)      91 (+1)      71 (-4)      92
RH % (24h trend)      52 (-1)      90 (+18)     50
Wind 20ft/early(mph)  E 23 G29     E 20 G26     E 20 G26
Wind 20ft/late(mph)   E 23 G29     E 20 G26     E 20 G26
Mixing Hgt(ft-agl/msl)5840                      5850
Transport Wnd (mph)   E 21                      E 16
Vent Rate (kt-ft)     105120                    81900
Dispersion            5                         5
DSI                   6            4            6
RH Recovery                        Excellent

Remarks...None.

$$

VIZ001-050715-
Saint Thomas and Saint John-
301 AM AST Wed Jun 4 2025

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mclear       Mclear
Precip Type           Showers      Showers      Showers
Chance Precip (%)     40           30           30
Temp (24h trend)      86 (0)       73 (-5)      87
RH % (24h trend)      64 (0)       94 (+10)     62
Wind 20ft/early(mph)  E 18 G23     E 17 G21     E 13 G17
Wind 20ft/late(mph)   E 18 G23     E 17 G21     E 13 G17
Mixing Hgt(ft-agl/msl)3710                      3640
Transport Wnd (mph)   E 23                      E 16
Vent Rate (kt-ft)     74200                     50960
Dispersion            5                         5
DSI                   6            6            6
RH Recovery                        Excellent

Remarks...None.

$$

VIZ002-050715-
St Croix-
301 AM AST Wed Jun 4 2025

                      Today        Tonight      Thu

Cloud Cover           Mclear       Mclear       Mclear
Precip Type           Showers      Showers      Showers
Chance Precip (%)     30           20           20
Temp (24h trend)      87 (+1)      74 (-3)      87
RH % (24h trend)      65 (+3)      89 (+4)      61
Wind 20ft/early(mph)  E 18 G23     E 17 G20     E 13
Wind 20ft/late(mph)   E 18 G23     E 17 G20     E 13
Mixing Hgt(ft-agl/msl)4720                      4660
Transport Wnd (mph)   E 25                      E 16
Vent Rate (kt-ft)     103840                    65240
Dispersion            5                         5
DSI                   6            6            6
RH Recovery                        Excellent

Remarks...None.

$$


$$