Observing & Predicting

Rainfall was measured by the foot in South Carolina in an event that statistically would happen, on average, once every thousand years.

May 2011

  • As of 2013, the warming effect of long-lived greenhouse gases in Earth's atmosphere has increased by approximately 34% since 1990.

  • The tornado outbreak across the southern United States in late April 2011 was deadly, devastating, and record breaking. NOAA's "CSI" team is investigating the possible connections between global warming, natural climate patterns, and tornadoes.