RICHMOND, VA - APRIL 22: A view of the scoring tower displaying a weather advisory during practice for the NASCAR Sprint Cup Series TOYOTA OWNERS 400 at Richmond International Raceway on April 22, 2016 in Richmond, Virginia. (Photo by Todd Warshaw/Getty Images)

RICHMOND, VA - APRIL 22: A view of the scoring tower displaying a weather advisory during practice for the NASCAR Sprint Cup Series TOYOTA OWNERS 400 at Richmond International Raceway on April 22, 2016 in Richmond, Virginia. (Photo by Todd Warshaw/Getty Images)

SAN ANTONIO, TX - APRIL 21: Standing water is seen in a fairway on the 18th hole during a rain delay due to inclement weather during the first round of the Valero Texas Open at TPC San Antonio AT&T Oaks Course on April 21, 2016 in San Antonio, Texas. (Photo by Scott Halleran/Getty Images)

SAN ANTONIO, TX - APRIL 21: A duck stands on the 18th green during a rain delay due to inclement weather during the first round of the Valero Texas Open at TPC San Antonio AT&T Oaks Course on April 21, 2016 in San Antonio, Texas. (Photo by Scott Halleran/Getty Images)

SAN ANTONIO, TX - APRIL 21: Signage stating that there is a rain delay due to inclement weather during the first round of the Valero Texas Open at TPC San Antonio AT&T Oaks Course on April 21, 2016 in San Antonio, Texas. (Photo by Scott Halleran/Getty Images)

SAN ANTONIO, TX - APRIL 21: Signage stating that there is a rain delay due to inclement weather during the first round of the Valero Texas Open at TPC San Antonio AT&T Oaks Course on April 21, 2016 in San Antonio, Texas. (Photo by Scott Halleran/Getty Images)

TO GO WITH AFP STORY (FILES) This file photo taken on May 18, 2013 shows a woman blowing her nose in Godewaersvelde, northern France, as the return of pleasant weather marks the arrival of allergenic pollen. One in three persons get affected by an allergy at some point in their lives, but the prevalence of allergies is expected to increase with the evolution of our environment, allergists warn. / AFP PHOTO / PHILIPPE HUGUENPHILIPPE HUGUEN/AFP/Getty Images

Defense forces soldiers help spread a plastic sheet over a broken roof in the village of Minami-Aso in Kumamoto prefecture on April 20, 2016, following a weather report forecasting heavy rains for the next day. Two major earthquakes and about 600 smaller tremors have rocked the southwestern island of Kyushu since late April 14, leaving a total of 46 people dead and more than 1,000 injured -- 208 of them seriously -- in Japan's worst humanitarian disaster in five years. / AFP PHOTO / JIJI PRESS / JIJI PRESS / Japan OUTJIJI PRESS/AFP/Getty Images