Dossier
Fourth of July heat wave
Coverage of Fourth of July heat wave in the Nexus archive.
- Fish kill triggered in Potomac River as water temperatures surge to record 94 degrees due to extreme heat wave
A fish kill occurred in the Potomac River north of Little Falls, Maryland, as record water temperatures of 94 degrees were recorded due to a Fourth of July heat wave. Officials attributed the event to the extreme heat driving river temperatures to unprecedented levels.