Non-Precipitation Warnings / Watches / Advisories
Issued by NWS San Juan, PR

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WWCA72 TJSJ 180937
NPWSJU

URGENT - WEATHER MESSAGE
National Weather Service San Juan PR
537 AM AST Thu Jul 18 2024

PRZ001-003-005-007-008-010-011-VIZ002-181745-
/O.NEW.TJSJ.EH.W.0019.240718T1500Z-240718T2100Z/
San Juan and Vicinity-Southeast-North Central-Ponce and Vicinity-
Northwest-Mayaguez and Vicinity-Southwest-St Croix-
Including the cities of Bayamon, Carolina, Catano, Guaynabo,
San Juan, Toa Alta, Toa Baja, Trujillo Alto, Arroyo, Guayama,
Maunabo, Patillas, Salinas, Yabucoa, Arecibo, Barceloneta,
Dorado, Florida, Manati, Vega Alta, Vega Baja, Guayanilla,
Juana Diaz, Yauco, Penuelas, Ponce, Santa Isabel, Aguadilla,
Camuy, Hatillo, Isabela, Quebradillas, Aguada, Anasco,
Hormigueros, Mayaguez, Moca, Rincon, San German, Cabo Rojo,
Guanica, Lajas, Christiansted, Frederiksted,
Frederiksted Southeast, and Grove Place
537 AM AST Thu Jul 18 2024

...EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM THIS MORNING TO
5 PM AST THIS AFTERNOON...

* WHAT...A period of dangerously hot and humid conditions are
  expected. This level of heat affects anyone without effective
  cooling and/or adequate hydration.

* WHERE...Most lower elevations of Puerto Rico except the eastern-
  most zone and Vieques and Saint Croix in the U.S. Virgin
  Islands.

* WHEN...Until 5 PM AST this afternoon.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

PRECAUTIONARY/PREPAREDNESS ACTIONS...


Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit  strenuous activities to early
morning or evening. Take action when you see symptoms of heat
exhaustion and heat stroke. Heat stroke is an emergency! Call 9 1
1.

Monitor the latest forecasts and warnings for updates.

&&

$$

PRZ012-VIZ001-181745-
/O.NEW.TJSJ.HT.Y.0054.240718T1500Z-240718T2100Z/
Culebra-St.Thomas...St. John...and Adjacent Islands-
Including the cities of Culebra, Anna`s Retreat,
Charlotte Amalie, Charlotte Amalie East, Charlotte Amalie West,
and Cruz Bay
537 AM AST Thu Jul 18 2024

...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 5 PM AST
THIS AFTERNOON...

* WHAT...A period of dangerously hot and humid conditions are
  expected. This level of heat affects most individual sensitive to
  heat. expected.

* WHERE...In Puerto Rico, Culebra. In the U.S. Virgin Islands, St.
  Thomas and St. John.

* WHEN...Until 5 PM AST this afternoon.

* IMPACTS...Hot temperatures and high humidity may cause heat
  illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take action when you see symptoms of heat exhaustion and heat
stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency! Call 9 1 1.

Monitor the latest forecasts and warnings for updates.

&&

$$