National Weather Service United States Department of Commerce

Summer Heat Continues; Severe Weather For Northeast

A large ridge of high pressure continues to bring summer heat and humidity to several sections of the country. Excessive heat warnings and heat advisories are in effect across the Desert Southwest, southern Plains, Lower Mississippi Valley and a small part of the Mid-Atlantic. Meanwhile, severe thunderstorms are forecast for the Northeast and northern Mid-Atlantic today. Read More >

Please Note: Soundings will display if there has been aircraft sounding in the last four hours. If no soundings are shown with your first attempt, click refresh once or twice and soundings may display (this is a known issue). This web page displays soundings from 140 UPS and Southwest Airlines aircraft equipped with water vapor sensors. These data are in the public domain.