National Weather Service United States Department of Commerce

Massive Heat Wave; Severe Storms and Heavy Rain

A massive heat wave is consuming much of the Midwest into the Southern tier of the U.S. with hazy, hot and humid conditions. These dangerous conditions will likely persist through Thursday as widespread excessive heat warnings and heat advisories are in effect. North and east of the heat and area of high pressure, thunderstorms with damaging and severe winds, large hail and heavy rain are likely. Read More >

Regional Area IV Member States

RA-IV Member States:


1. Antigua and Barbuda
2. Aruba
3. Bahamas
4. Barbados (Met Service)
5. Barbados (CMI)
6. Cayman Islands
7. Cuba (Met Service)
8. Curacao
9. Dominica
10. Dominican Republic
11. Grenada
12. Guadeloupe
13. Haiti
14. Jamaica
15. Martinique
16. Saint Lucia
17. Sint Maarten
18. Trinidad & Tobago

Central America

19. Belize
20. Costa Rica
21. El Salvador
22. Guatemala
23. Honduras
24. Mexico (Met Service)
25. Nicaragua
26. Panama

South America

27. Columbia
28. French Guiana
29. Guyana
30. Venezuela

North America

31. Canada
32. United States of America



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