Heat Advisory issued June 2 at 9:16AM AST until June 2 at 4:00PM AST by NWS San Juan PR
* WHAT...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health systems and in heat-sensitive industries. * WHERE...Mayaguez and Vicinity, North Central, Northwest, Ponce and Vicinity, San Juan and Vicinity, Southeast, and Southwest Counties. * WHEN...Until 4 PM AST this afternoon. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Heat Advisory issued June 1 at 10:27AM AST until June 1 at 5:00PM AST by NWS San Juan PR
* WHAT...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health systems and in heat-sensitive industries. * WHERE...Mayaguez and Vicinity, North Central, Northwest, Ponce and Vicinity, San Juan and Vicinity, Southeast, and Southwest municipalities. * WHEN...Until 5 PM AST this afternoon. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...An extensive and dense plume of Saharan Air Layer (SAL) will also affect the local islands through midweek. This Saharan Dust will deteriorate air quality and result in hazy skies.
Flood Advisory issued May 17 at 7:16AM AST until May 17 at 9:00AM AST by NWS San Juan PR
* WHAT...Urban and small stream flooding caused by excessive rainfall is expected. * WHERE...Ceiba and Fajardo. * WHEN...Until 900 AM AST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. Ponding of water in urban or other areas is occurring or is imminent. * ADDITIONAL DETAILS... - At 716 AM AST, Doppler radar indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. Up to 1 inch of rain has fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area. This additional rain will result in minor flooding.
Hydrologic Outlook issued May 16 at 4:25PM AST by NWS San Juan PR
ESFSJU An upper-level trough moving across the Dominican Republic, combined with abundant moisture, will result in the development of showers and thunderstorms across the local islands today and Saturday. Today, showers are expected to develop across the islands, with the highest accumulations across the interior, west and northwest Puerto Rico. Then, tonight, as the trough crosses the region, the showers and thunderstorms will spread across the eastern half of Puerto Rico, including Vieques and Culebra, and also over the Virgin Islands. This activity is expected to continue on Saturday too, but the weather is expected to improve on Sunday, as
Hydrologic Outlook issued May 15 at 12:30PM AST by NWS San Juan PR
ESFSJU An upper-level trough moving across the northeast Caribbean combined with abundant moisture will result in showers and thunderstorms across the local island Friday and Saturday. Based on the latest guidance, there is a chance to observe periods of showers and thunderstorms Friday and Saturday. The areas expected to receive the highest rainfall totals include northwest, central and the eastern coastal areas of Puerto Rico as well as Vieques, Culebra and the US Virgin Islands. Across these areas there is a moderate chance(40-60%) to observe 2 to 4 inches with locally higher amounts of up to 6 inches. Due to
Flood Warning issued May 15 at 6:05AM AST until May 15 at 10:00AM AST by NWS San Juan PR
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Naguabo, along Rio Blanco. * WHEN...Until 1000 AM AST. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. Streams continue to rise due to excess runoff from earlier rainfall. Low-water crossings are inundated with water and may not be passable. Expect many areas of slow moving or standing water. It will take several hours for all the water from these storms to work through local drainage systems in urban areas. * ADDITIONAL DETAILS... - At 601 AM AST, Doppler radar indicated heavy rain. USGS
Hydrologic Outlook issued May 14 at 10:19AM AST by NWS San Juan PR
ESFSJU The local islands once again are expected to experience a wet weather pattern by the end of the workweek and into the weekend. This pattern is the result of abundant moisture combined with an upper-level trough moving across the northeast Caribbean. Based on the latest guidance, the heaviest rainfall is most likely to occur from Friday into Saturday. The areas expected to receive the highest rainfall totals include the southeastern and eastern portions of Puerto Rico, as well as Vieques, Culebra, and the U.S. Virgin Islands. Across these areas there is a moderate chance (40-60%) of receiving 2 to
Flood Warning issued May 10 at 5:46AM AST until May 10 at 8:45AM AST by NWS San Juan PR
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Rio Fajardo, in the municipality of Fajardo. * WHEN...Until 845 AM AST. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. * ADDITIONAL DETAILS... - At 544 AM AST, Doppler radar indicated heavy rain due to thunderstorms. Flooding is ongoing or expected to begin shortly in the warned area. Between 1 and 3 inches of rain have fallen.
Flood Warning issued May 10 at 5:40AM AST until May 10 at 8:45AM AST by NWS San Juan PR
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Over Rio Blanco in Naguabo. * WHEN...Until 845 AM AST. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. * ADDITIONAL DETAILS... - At 539 AM AST, Doppler radar indicated heavy rain. Flooding is ongoing or expected to begin shortly in the warned area. Up to 1 inch of rain has fallen.
Flood Advisory issued May 9 at 6:24AM AST until May 9 at 8:00AM AST by NWS San Juan PR
* WHAT...Urban and small stream flooding caused by excessive rainfall continues. * WHERE...A portion of Puerto Rico, including the following counties, Loiza, Luquillo and Rio Grande. * WHEN...Until 800 AM AST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. Water over roadways. Overflowing poor drainage areas. * ADDITIONAL DETAILS... - At 624 AM AST, Doppler radar indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. Up to 3 inches of rain have fallen. - Additional rainfall amounts up to 1 inch are expected over the area.