"Home". vortex2.org. Archived from the original on 2009-04-12. Retrieved 2008-10-24.
"What is VORTEX2?". National Science Foundation (NSF) and the National Oceanic and Atmospheric Administration (NOAA). Archived from the original on 2019-02-12. Retrieved 2009-05-11.
Bettes, Mike (May 14, 2009). "VORTEX2: Close but no cigar". Mike Bettes On-Camera Meteorologist. The Weather Channel Interactive, Inc. Archived from the original on May 18, 2009. Retrieved 2009-05-14.
"Home". vortex2.org. Archived from the original on 2009-04-12. Retrieved 2008-10-24.
"What is VORTEX2?". National Science Foundation (NSF) and the National Oceanic and Atmospheric Administration (NOAA). Archived from the original on 2019-02-12. Retrieved 2009-05-11.
Bettes, Mike (May 14, 2009). "VORTEX2: Close but no cigar". Mike Bettes On-Camera Meteorologist. The Weather Channel Interactive, Inc. Archived from the original on May 18, 2009. Retrieved 2009-05-14.