Tornado Scientist Tim Samaras and Team Killed in Friday's El Reno, OK Tornado
Veteran tornado scientist Tim Samaras, his son, environmental photographer Paul Samaras, 24, and meteorologist Carl Young, 45, died while chasing Friday's EF-3 tornado in El Reno, Oklahoma. The tornado killed at least nine people, in total. "Thank you to everyone for the condolences. It truly is sad that we lost my great brother Tim and his great son, Paul," said the brother of Tim Samaras, Jim Samaras, on Tim's Facebook page. "They all unfortunately passed away but doing what they LOVED." Tim, his son Paul, and Carl Young were all featured chasers on the Discovery Channel’s series, Storm Chasers, and Tim was known throughout the chase community as a conscientious and safety-minded chaser. Carl Young, who holds a Masters degree in meteorology from the University of Nevada, joined Samaras in the field in 2003. According to his Discovery Channel biography, Young and Samaras chased over 125 tornadoes together: "Carl's finest moment came on June 11, 2004 near Storm Lake, Iowa. Working with Tim, they defied the odds and deployed their probes right in the path of a tornado. The six-camera video probe captured amazing footage from multiple angles while the sensor probe recorded data that revealed just how fast wind speeds are close to the ground."
Figure 2. Storm chasers in North Dakota aligned themselves to spell out "T S" in honor of Tim Samaras today. Image credit: spotternetwork.org.
Tornado science loses a pioneer
Tim Samaras had been a tornado scientist for over 25 years. He was the founder of TWISTEX, the Tactical Weather Instrumented Sampling in Tornadoes Experiment, a 2011 field experiment designed to help learn more about tornadoes and increase lead time for warnings, which resulted in many peer-reviewed publications and conference presentations. One of Tim Samaras' most widely recognized contributions to tornado science is his placement of an aerodynamically-designed probe in the path of an EF-4 tornado near Manchester, South Dakota on June 24, 2003. The probe measured a world-record pressure fall of 100 mb over a 40 second period.
One of the publications from the TWISTEX program, "Near-Ground Pressure and Wind Measurements in Tornadoes" recounts this close call Tim had in a tornado in 2011: "As the storm approached, the crew noted that the supercell was moving more sharply to the right of its former course, placing them near the projected path of the low-level mesocyclone. The crew drove south on Highway 259, attempting to position south of the low-level mesocyclone before it crossed the highway. With considerable tree cover in this region hampering the visual observation of the storm's features, TWISTEX crews could not position south of the mesocyclone on Highway 259 before the mesocyclone reached this road. Thus, the two mobile mesonet stations, M2 and M3, had an unplanned tornado encounter with a developing tornadic circulation while the mesonet was traveling south on Highway 259."
Figure 3. One of Tim Samaras' most widely recognized contributions to tornado science is his placement of an aerodynamically-designed probe in the path of an EF-4 tornado near Manchester, South Dakota on June 24, 2003. The probe measured a world-record pressure fall of 100 mb over a 40 second period. See the NWS article and conference paper on the event. Thanks to wunderground member Scott Lincoln for this link.
A storm chasers' nightmare
Cars and tornadoes can prove a dangerous mix even for the world's most experienced storm chasers. Driving at high speeds though heavy rain, large hail, and high winds is hazardous. If one is lucky enough to chase down a tornado, even the most experienced chasers can find themselves in a serious life-threatening situation when unexpected events occur. The exact circumstances of the deaths of Tim Samaras and his team are not clear, but the El Reno tornado was an extremely dangerous one to chase. Tornadoes by their nature are unpredictable, and can change course unexpectedly, or pop up suddenly. It's particularly dangerous when a tornado is wrapped in rain, making it hard to see, or if a chaser is operating in a heavily populated area, where roads may suddenly become congested. All four of these conditions occurred Friday during the El Reno tornado. The El Reno tornado was wrapped in rain and difficult to see as it headed west towards Oklahoma City, and suddenly made a jog to the southeast as a Weather Channel team led by Mike Bettes was attempting to get in front of the storm, and the tornado lifted their vehicle off the ground, rolled it multiple times, and hurled it 200 yards into a nearby field. Austin Anderson was driving the Tornado Hunt vehicle, and suffered several broken bones and was hospitalized. Although Austin will have to undergo surgery in the next few days, doctors say he is expected to make a full recovery. StormChasingVideo.com storm chaser Brandon Sullivan and his chase partner Brett Wright got caught in the tornado northwest of Union City, OK and slammed with debris as the tornado hit a barn that exploded in front of them. Meteorologist Emily Sutton and storm chaser Kevin Josefy of local Oklahoma City TV station KFOR also had a very close call with the El Reno tornado Friday afternoon. They got too close to the tornado, and were forced to floor the car in reverse to escape flying debris. With branches of trees crashing around them, Sutton began feeling debris hitting her back, and realized that the rear windshield of the car must have gotten destroyed. Both were uninjured. Reed Timmer's armor-plated "Dominator" chase vehicle had its hood torn off by the tornado. Wunderground member Levi32 was out storm chasing during the El Reno Tornado, and got stuck in traffic on Highway 4 and couldn't move. "We looked up above the car and saw the wall cloud over top of us, with very quick rotation and rising scud indicating the updraft. We were definitely too close."
http://youtu.be/GtOtDDPcNGE
Video 1. Severe storm researcher and engineer Tim Samaras talks about his view on tornadoes and what remains to be understood in this interview posted on May 21, 2013.
http://youtu.be/-nKGOjNh_lI
Video 2. A tornado passes over one of Tim Samaras' specially designed six-camera video probes on June 11, 2004 near Storm Lake, Iowa.
Tornadoes and cars: a dangerous mix
A vehicle is about the worst place you can be in a tornado, as the tornado's winds can easily roll a car. (The only place less safe is probably a mobile home, as a tornado's winds can roll mobile homes almost as readily, and mobile homes don't come with seat belts and air bags.) At least five of the deaths in Friday's El Reno tornado occurred in vehicles. There was one local TV station that urged residents without underground shelters to get in their cars and "get south" in advance of the tornado that was approaching Oklahoma City, since chasers were reporting that the El Reno tornado may have been so strong that only an underground shelter would have provided adequate protection. This terrible piece of advice likely contributed to the incredible traffic jams that we saw on I-35, I-40, I-44, and other local roads Friday night. Thousands of cars were bumper-to-bumper on the roads as a dangerous tornado approached them. Had the El Reno tornado plowed directly down one of these car-choked interstates, the death toll could have easily exceeded 500. If you are located in a metro area and don't have an underground shelter, the best thing to do it to take shelter in an interior windowless room or hallway, with protective furniture over your body. Getting in a car and attempting to flee the tornado is the worst thing you can do in an urban area. You may not be able to see the tornado if it is dark or the tornado is wrapped in rain. You are likely to encounter hazardous winds, rain, and hail, run into unexpected traffic, or flooded or debris-blocked roads that will put you directly in the path of the tornado. Even without an underground shelter, most people will be able to survive a dangerous EF-4 tornado. Case in point: during the Mannsford, Oklahoma EF- 4 tornado of 1984, a packed church received a direct hit, and everyone in the church survived. The only fatality was a man who drove to the church to get his wife. It is often better to abandon your vehicle and take shelter in a ditch, if you are caught in a car during a tornado. However, if there is already flying debris in the air, leaving your car and exposing yourself to the debris in order to get to a ditch may be more hazardous than staying in your car. Furthermore, ditches are prone to flash floods. Four deaths during the El Reno tornado were from a family of seven that sheltered in a drainage ditch, and were washed into the Deep Fork River by a flash flood. Searchers are still looking for the other three bodies. A 2002 research paper, "UNSAFE AT ANY (WIND) SPEED? Testing the Stability of Motor Vehicles in Severe Winds" found that: "The stability and superior safety of being in a vehicle in severe winds, relative to occupying a mobile home or being outdoors, should be considered." Also, TWC's severe weather expert, Dr. Greg Forbes, commented on the pros and cons of abandoning one's vehicle for a ditch in a 2009 blog post, "Tornado Safety - Cars Versus Ditches: A Controversy." His personal take on what he would do if his car was being overtaken by a tornado, and no sturdy buildings were nearby to take shelter in: "I can't see myself getting out of the vehicle. I'd try first to drive away from the tornado. Both the NWS and the American Red Cross actually also advocate this. If you can determine which way the tornado is moving toward, face your body toward that direction and then go to the right, as shown in the diagram below. That is usually toward the south or southeast. The reason that it's best to head this way is that if you went to the left you would normally get into the region where largest hail and blinding rain occur in the kind of supercell, rotating thunderstorms that often spawn tornadoes. If I had no such driving option and I did feel the urge to get out of my car, I'd try to get into a building, and into a ditch well away from the car as the last resort."
My condolences and prayers go to all of the family and friends of Tim Samaras, Paul Samaras, and Carl Young. Their deaths are a terrible shock to the meteorological community, and a great loss for tornado science. I hope that their deaths will lead towards safer tornado chasing, and help spur efforts to use emerging drone technology to take measurements in dangerous storms such as tornadoes and hurricanes.
Jeff Masters
http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=2423
