Cidra Severe Weather Warnings, Watches and Advisories
Select the Advisory Below for Details
Begins: 2:07 PM Tue, Sep 23, 2025Expires: 4:00 PM Tue, Sep 23, 2025Begins: 10:06 AM Tue, Sep 23, 2025Expires: 8:00 PM Fri, Sep 26, 2025
HEAT ADVISORY
Begins: 2:07 PM Tue, Sep 23, 2025
Expires: 4:00 PM Tue, Sep 23, 2025
* WHAT...This level of heat affect most individuals sensitive to
heat, especially those without effective cooling and/or adequate
hydration. Impacts possible in some health system and in
heat-sensitive industries.
* WHERE...Portions of Puerto Rico and Virgin Islands.
* WHEN...Until 4 PM AST this afternoon.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
HYDROLOGIC OUTLOOK
Begins: 10:06 AM Tue, Sep 23, 2025
Expires: 8:00 PM Fri, Sep 26, 2025
ESFSJU
A strong tropical wave, designated as Invest 94L by the National
Hurricane Center, will approach the local islands as early as
Tuesday night, enhancing the chances of flooding through at least
late Thursday.
The first round of showers will reach the Virgin Islands on Tuesday
night and early Wednesday, with periods of moderate to heavy rain
anticipated. The rain will then spread across Vieques, Culebra, and
east and southeast Puerto Rico. This unsettled weather pattern is
expected to linger into at least Thursday. So far, the heaviest
activity should be focused along the vicinity of the Virgin Islands
and the eastern third of Puerto Rico.
The tropical wave appears to have a good structure in the low and
mid levels, and a big area of above than normal moisture content.
Also, previous rainfalls maintain soils saturated along portions of
the interior, western and the extreme east of Puerto Rico. Soils are
also saturated in portions of St.Croix and St. Thomas, according to
the National Moisture Soil Analysis. However, soils are not
saturated along the east-interior, and most of southern Puerto Rico.
U.S.Geological Survey sensors shows that most streams are running
near normal, but some rivers are running below normal in the
east-interior and southeast.
Although it is not expected to be raining all day long, or
everywhere at the same time, this wet period will increase the
likelihood of experiencing urban and small stream flooding,
landslides, rapid river rises, and isolated flash flood and rivers
reaching flood stage. It is worth mentioning, that even though
rivers are not as high in the east, these rivers tend to react
quickly. Across the Virgin Islands, water surges along drainage guts
are a concern as well.
The local guidance are in agreement that the territories will
observe these rains, but there is some uncertainty in the exact
amounts, timing and location. For now, the official forecast calls
for 2 to 4 inches and isolated amounts up to 6 inches through the
entire period (late Tuesday through late Thursday).
Residents and visitors are urged to stay away from rivers and flood
prone areas, and to stay tuned to any changes in the forecast and
flood products issued by the Weather Forecast Office.
What is the difference between a weather warning, watch and advisory?
The National Weather Service issues alerts in different categories to indicate the severity of storms and if the public should take immediate action to prevent the loss of life or property or be aware of the potential of the same.
Weather Warning
A weather warning is issued when severe weather conditions are occuring or imminent and there is danger to life and/or property. The warning will include what action should be taken including evacuation or shelter in place and should be heeded immediately. Warnings are usually issued for a small, specific area and for a definite period of time.
Weather Watch
A weather watch is an alert issued by the National Weather Service when conditions are favorable for the development of severe weather. A weather watch means that severe weather is possible in the area, so it is important to stay tuned to the latest forecasts and be prepared for potential storms.
The purpose of a weather watch is to provide advance warning to people in the affected area so that they can take necessary precautions. It is important to remember that a weather watch does not mean that severe weather will definitely occur, but simply that there is a higher chance of it happening.
If you live in an area where severe weather is common, it may be wise to have a plan in place for what you will do if a storm hits. Make sure you have plenty of food and water stored, as well as flashlights, batteries, and other supplies. You may also want to consider evacuating if necessary.
Weather Advisory
An advisory means the conditions are likely to occur. These are typically used for less severe weather events like frost or winds but can be used for other types of severe weather.
What is a Red Flag Warning?
A red flag warning is issued by the National Weather Service to inform the public, firefighters, and land management agencies that conditions are ideal for wildland fires and any fire which does start could spread rapidly. These are often issued after drought conditions, when humidity is very low and especially when there are high or erratic winds. The possibility of lightning is also a determining factor. Fire fighting agencies often will increase their staffing and equipment resources due to the forecast risk. For the public, a Red Flag Warning often means high fire danger leading to restrictions or bans on outdoor burning including burn piles, burn barrels and campfires. Use of anything which may produce sparks, including outdoor lawn equipment, chainsaws and welding, may be restricted or prohibited.
The weather criteria for fire weather watches and red flag warnings vary with each Weather Service office’s warning area based on the local vegetation type, topography, and distance from major water sources. They usually include the daily vegetation moisture content calculations, expected afternoon high temperature, afternoon minimum relative humidity and daytime wind speed.
An enhanced version of the warning, called extreme red flag warning, may be issued. This means that conditions for fire growth and behavior are extremely dangerous due to a combination of strong winds, very low humidity, long duration, and very dry fuels.
HEAT ADVISORY
Begins: 2:07 PM Tue, Sep 23, 2025
Expires: 4:00 PM Tue, Sep 23, 2025
* WHAT...This level of heat affect most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health system and in heat-sensitive industries. * WHERE...Portions of Puerto Rico and Virgin Islands. * WHEN...Until 4 PM AST this afternoon. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
HYDROLOGIC OUTLOOK
Begins: 10:06 AM Tue, Sep 23, 2025
Expires: 8:00 PM Fri, Sep 26, 2025
ESFSJU A strong tropical wave, designated as Invest 94L by the National Hurricane Center, will approach the local islands as early as Tuesday night, enhancing the chances of flooding through at least late Thursday. The first round of showers will reach the Virgin Islands on Tuesday night and early Wednesday, with periods of moderate to heavy rain anticipated. The rain will then spread across Vieques, Culebra, and east and southeast Puerto Rico. This unsettled weather pattern is expected to linger into at least Thursday. So far, the heaviest activity should be focused along the vicinity of the Virgin Islands and the eastern third of Puerto Rico. The tropical wave appears to have a good structure in the low and mid levels, and a big area of above than normal moisture content. Also, previous rainfalls maintain soils saturated along portions of the interior, western and the extreme east of Puerto Rico. Soils are also saturated in portions of St.Croix and St. Thomas, according to the National Moisture Soil Analysis. However, soils are not saturated along the east-interior, and most of southern Puerto Rico. U.S.Geological Survey sensors shows that most streams are running near normal, but some rivers are running below normal in the east-interior and southeast. Although it is not expected to be raining all day long, or everywhere at the same time, this wet period will increase the likelihood of experiencing urban and small stream flooding, landslides, rapid river rises, and isolated flash flood and rivers reaching flood stage. It is worth mentioning, that even though rivers are not as high in the east, these rivers tend to react quickly. Across the Virgin Islands, water surges along drainage guts are a concern as well. The local guidance are in agreement that the territories will observe these rains, but there is some uncertainty in the exact amounts, timing and location. For now, the official forecast calls for 2 to 4 inches and isolated amounts up to 6 inches through the entire period (late Tuesday through late Thursday). Residents and visitors are urged to stay away from rivers and flood prone areas, and to stay tuned to any changes in the forecast and flood products issued by the Weather Forecast Office.
What is the difference between a weather warning, watch and advisory?
The National Weather Service issues alerts in different categories to indicate the severity of storms and if the public should take immediate action to prevent the loss of life or property or be aware of the potential of the same.
Weather Warning
A weather warning is issued when severe weather conditions are occuring or imminent and there is danger to life and/or property. The warning will include what action should be taken including evacuation or shelter in place and should be heeded immediately. Warnings are usually issued for a small, specific area and for a definite period of time.
Weather Watch
A weather watch is an alert issued by the National Weather Service when conditions are favorable for the development of severe weather. A weather watch means that severe weather is possible in the area, so it is important to stay tuned to the latest forecasts and be prepared for potential storms.
The purpose of a weather watch is to provide advance warning to people in the affected area so that they can take necessary precautions. It is important to remember that a weather watch does not mean that severe weather will definitely occur, but simply that there is a higher chance of it happening.
If you live in an area where severe weather is common, it may be wise to have a plan in place for what you will do if a storm hits. Make sure you have plenty of food and water stored, as well as flashlights, batteries, and other supplies. You may also want to consider evacuating if necessary.
Weather Advisory
An advisory means the conditions are likely to occur. These are typically used for less severe weather events like frost or winds but can be used for other types of severe weather.
What is a Red Flag Warning?
A red flag warning is issued by the National Weather Service to inform the public, firefighters, and land management agencies that conditions are ideal for wildland fires and any fire which does start could spread rapidly. These are often issued after drought conditions, when humidity is very low and especially when there are high or erratic winds. The possibility of lightning is also a determining factor. Fire fighting agencies often will increase their staffing and equipment resources due to the forecast risk. For the public, a Red Flag Warning often means high fire danger leading to restrictions or bans on outdoor burning including burn piles, burn barrels and campfires. Use of anything which may produce sparks, including outdoor lawn equipment, chainsaws and welding, may be restricted or prohibited.
The weather criteria for fire weather watches and red flag warnings vary with each Weather Service office’s warning area based on the local vegetation type, topography, and distance from major water sources. They usually include the daily vegetation moisture content calculations, expected afternoon high temperature, afternoon minimum relative humidity and daytime wind speed.
An enhanced version of the warning, called extreme red flag warning, may be issued. This means that conditions for fire growth and behavior are extremely dangerous due to a combination of strong winds, very low humidity, long duration, and very dry fuels.