Tornado at Denver International Airport - June 18, 2013

Denver International Airport Tornado June 18, 2013

Narrative

A tornado developed on Denver International Airport (DIA) grounds on the afternoon of June 18, 2013. The tornado formed around 2:19 PM just north of 70th Avenue. The tornado then moved slowly northwest between Runway 35R and 35L, and moved to within a half mile of Concourses A and B before dissipating at 2:36 PM. The tornado moved extremely close if not over the ASOS (Automated Surface Observation System) and another low level wind shear sensor at DIA. The ASOS weather observing system reported a 97 mph wind gust at 2:27 PM, while the wind shear sensor reported a wind gust to 109 mph at the same time – indicative of an EF1 tornado. There was only minor damage noted to this equipment. The storm responsible for this tornado first developed just south of the airport, and then drift slowly northward across the eastern side of DIA. At 2:05 PM, there was weak rotation beginning to develop underneath this storm as noted by the velocity data below. This rotation then strengthened quickly between 2:10 and 2:22 PM.

 

Velocity Image from KFTG Radar

 

Denver Automated Surface Observing System Data

Time (UTC)                     Wind Speed (Kts)  Wind Direction  Peak gust (Kts)

2025 (1425 MDT)                   35                            40                         45  

2026 (1426 MDT)                   48                            30                         73  

2027 (1427 MDT)                   56                            39                         84  

2028 (1428 MDT)                    M                           242                        76  

2029 (1429 MDT)                    M                           240                        70  



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