Hailstones are seen on a car in downtown Beirut, Lebanon February 13, 2017. REUTERS/ Jamal Saidi

Hailstones cover a wooden bench in downtown Beirut, Lebanon February 13, 2017. REUTERS/ Jamal Saidi

A woman holds her umbrella as she passes a car covered by hailstones in downtown Beirut, Lebanon February 13, 2017. REUTERS/ Jamal Saidi

Football Soccer - Manchester United v Aston Villa - Barclays Premier League - Old Trafford - 16/4/16
Hailstones on the pitch
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Drivers on the 14 Freeway come to stop as monsoon storm cell dumps hail and rain in the high desert area of Los Angeles County, California July 30, 2015. California is in the fourth year of the worst drought the state has experienced in decades. Brown declared the drought an emergency in 2014, and in April issued his order for mandatory cutbacks in urban water use, focused mostly on water used to irrigate decorative landscape such as grass lawns. REUTERS/Gene Blevins

Drivers on the 14 Freeway come to stop as monsoon storm cell dumps hail and rain in the high desert area of Los Angeles County, California July 30, 2015. California is in the fourth year of the worst drought the state has experienced in decades. Brown declared the drought an emergency in 2014, and in April issued his order for mandatory cutbacks in urban water use, focused mostly on water used to irrigate decorative landscape such as grass lawns. REUTERS/Gene Blevins

A tourist junk boat and a ferry sail at Hong Kong's Victoria Harbour with the financial Central district seen at the background April 3, 2014. Hong Kong weather has been unstable for the past few days, with rain, thunderstorms and hail reports affecting the south China coast, according to Hong Kong Observatory. REUTERS/Bobby Yip (CHINA - Tags: ENVIRONMENT)

Saudi youths demonstrate a stunt known as "sidewall skiing" (driving on two wheels) in the northern city of Hail, in Saudi Arabia March 30, 2013. Performing stunts such as sidewall skiing and drifts is a popular hobby amongst Saudi youths. REUTERS/Mohamed Al Hwaity (SAUDI ARABIA - Tags: SOCIETY)

A metering rule is placed beside hailstones after a hail storm hit the city of Zurich July 1, 2012. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: ENVIRONMENT)

Youssef Fulgensio Onyalla holds an old photograph of Emperor Haile Selassie standing in front of a Sudanese plane in a tent containing South Sudan's archives in the capital Juba, May 18, 2012. South Sudan's independence last July was forged through years of hard-fought rebellion in the bush, so it seems fitting that the world's newest nation still keeps much of its history in a tent. The weather-beaten brown tent in a roadside government compound in the capital Juba goes unnoticed by most passing drivers and pedestrians. Picture taken May 18, 2012. To match feature SOUTHSUDAN-HISTORY/ REUTERS/Adriane Ohanesian (SOUTH SUDAN - Tags: SOCIETY POLITICS)

Schoolchildren react during a hailstorm as Britain's Queen Elizabeth visits the "Wild London" exhibition in Richmond, west London May 15, 2012. REUTERS/Suzanne Plunkett (BRITAIN - Tags: ROYALS ENVIRONMENT ENTERTAINMENT SOCIETY)

Syrian children who fled Idlib in Syria walk during a hailstorm outside the refugees camp near the Turkish-Syrian border in the southeastern city of Yayladagi February 16, 2012. REUTERS/Zohra Bensemra (TURKEY - Tags: POLITICS CIVIL UNREST)

A couple seeks cover and protection during a hail and rain storm before the Saskatchewan Roughriders play the Edmonton Eskimos in Regina, Saskatchewan July 3, 2011. The start of the game was delayed because of the weather. REUTERS/David Stobbe (CANADA - Tags: SPORT FOOTBALL)

A rainbow is seen over a church in Arlington, Virginia after a localized burst of rain and hail, May 4, 2011. The weather was unseasonably cool and windy in the Washington area.

REUTERS/Kevin Lamarque (UNITED STATES - Tags: ENVIRONMENT RELIGION IMAGES OF THE DAY)

The Empire State Building is barely visible on the skyline of New York as a sudden hail storm hits Hoboken, New Jersey, October 11, 2010. REUTERS/Gary Hershorn (UNITED STATES - Tags: ENVIRONMENT)

A man herds cattle on a field covered with ice after a heavy hailstorm in Gatimu village of Nyahururu district along the Equator, about 210km (130 miles) west of the Kenyan capital Nairobi, August 19, 2010. REUTERS/Thomas Mukoya (KENYA - Tags: ENVIRONMENT SOCIETY ANIMALS)

CHINA-TORNADO/ - Map of China locating Chongqing where a tornado and hailstorm killed at least 25 people on Thursday. RNGS. (SIN09)

A child's toy duck is partially buried by hailstones following an ice storm in Derry, Northern Ireland, March 31, 2010. Thousands of homes in Scotland and Northern Ireland were left without electricity on Tuesday evening after severe weather affected power lines. REUTERS/Cathal McNaughton (NORTHERN IRELAND - Tags: ENVIRONMENT IMAGES OF THE DAY)

A garden is covered with hailstones in Les Esserts after a hail storm hit the western part of Switzerland July 23, 2009. REUTERS/Valentin Flauraud (SWITZERLAND ENVIRONMENT IMAGES OF THE DAY)

Hailstones cover the fairway of the 18th hole during a storm at the Casa Serena Golf Course near the city of Kutna Hora, 80.5 km (50 miles) east from Prague, June 12, 2009. REUTERS/Petr Josek (CZECH REPUBLIC ENVIRONMENT SOCIETY SPORT GOLF)

Hailstones are seen on the ground after heavy rainfall delayed the first round of the Abu Dhabi Golf Championships, January 15, 2009. Hailstorms are rare in the United Arab Emirates. REUTERS/Jumana El Heloueh (UNITED ARAB EMIRATES)

A villager holds ice after heavy hailstorms hit a deforested hillside in Gikingi Village in Nyahururu town, some 220km from Nairobi, September 3, 2008. REUTERS/Antony Njuguna (KENYA)

A boy walks on ice-covered grass with his dogs after heavy hailstorms hit a deforested hillside in Gikingi Village in Nyahururu town, some 220km from Nairobi, September 3, 2008. REUTERS/Antony Njuguna (KENYA)

Villagers play with snow after heavy hailstorms hit a deforested hillside in Gikingi Village in Nyahururu town, some 220km from Nairobi, September 3, 2008.REUTERS/Antony Njuguna (KENYA)

Children play with snow after heavy hailstorm hit a deforested hillside in Gikingi Village in Nyahururu town, some 220km from Nairobi, September 3, 2008. REUTERS/Antony Njuguna (KENYA)
Also see: GF2E4941BHD01

A woman photographs a fast approaching storm that has brought high winds, hail and rain to northwest Calgary, Alberta, July 7, 2008. Alberta has seen wild weather with a tornado touching down north of Calgary yesterday, July 6. REUTERS/Todd Korol (CANADA)

A traveller takes pictures of an ice-covered highway after a summer storm dropped marble-sized hailstones about 50 km (30 miles) south of Kuopio, central Finland July 2, 2008. REUTERS/Bob Strong (FINLAND)

A man walks along a road after heavy rain and a hailstorm hit Islamabad January 10, 2008.REUTERS/Faisal Mahmood(PAKISTAN)

Emergency personnel work to clear out cars damaged by hail along a main street in Bogota November 3, 2007. Heavy rain and a hail storm flooded the streets, causing traffic chaos according to the authorities. REUTERS/Daniel Munoz (COLOMBIA)

A youngster shows off a ball made from hail stones which fell during a spell of unseasonal weather in south London July 3, 2007. REUTERS/Dylan Martinez (BRITAIN)

A cyclist rides through hail stones which fell during a spell of unseasonal weather in south London July 3, 2007. REUTERS/Dylan Martinez (BRITAIN)

A woman skips through hail stones which fell during a spell of unseasonal weather in south London July 3, 2007. REUTERS/Dylan Martinez (BRITAIN)

The pack of riders passes the village of Ulrichen where the sixth stage of the Tour de Suisse cycling race had to be restarted following a hail storm and bad weather conditions June 21, 2007. REUTERS/Denis Balibouse (SWITZERLAND)

Unidentified riders wait after a hail storm in Gnosca after the start of the sixth stage of the Tour de Suisse cycling race June 21, 2007. The race was stopped and a new start will take place in Ullrichen later on today. REUTERS/Denis Balibouse (SWITZERLAND)

Unidentified riders cycle in an hail storm in Gnosca after the start of the sixth stage of the Tour de Suisse cycling race June 21, 2007. The race was stopped and a new start will take place in Ullrichen later today. REUTERS/Denis Balibouse (SWITZERLAND)

Hailstones are pictured on the road in Gnosca after the start of the sixth stage of the Tour de Suisse cycling race June 21, 2007. The race was stopped and a new start will take place in Ullrichen later today. REUTERS/Denis Balibouse (SWITZERLAND)

A boy plays with hailstones after a heavy thunderstorm at a garden in Vienna June 10, 2007. REUTERS/Herwig Prammer (AUSTRIA)

The space shuttle Atlantis sits on launch pad 39A at the Kennedy Space Center in Cape Canaveral, Florida, June 8, 2007. The U.S. space shuttle Atlantis and its hail-scarred fuel tank escaped the worst of severe weather that socked Central Florida overnight and now faces an even rosier forecast for liftoff on Friday, NASA officials said. REUTERS/Kim Shiflett/NASA/Handout (UNITED STATES)

A girl displays collected hails after a heavy hailstorm in New Delhi March 21, 2007. Approximately more than one-inch of diameter was the size of the hails. REUTERS/B Mathur (INDIA)

Damage to the right of edge of space shuttle Atlantis' external tank from hail is seen at the Kennedy Space Center in Cape Canaveral, Florida March 4, 2007. Atlantis' external tank was damaged during a hail storm February 26, 2007. REUTERS/Scott Audette (UNITED STATES)

A pedestrian runs for cover in a hail storm in Buenos Aires, Argentina July 26, 2006. The Argentine capital has been hit by unusually warm weather during wintertime in the Southern Hemisphere. REUTERS/Enrique Marcarian (ARGENTINA)

Pedestrians look at a hail storm in Buenos Aires, Argentina July 26, 2006. The Argentine capital has been hit by unusually warm weather during wintertime in the Southern Hemisphere. REUTERS/Enrique Marcarian (ARGENTINA)

Pedestrians look at a hail storm in Buenos Aires, Argentina July 26, 2006. The Argentine capital has been hit by unusually warm weather during wintertime in the Southern Hemisphere. REUTERS/Enrique Marcarian (ARGENTINA)

A pedestrian runs for cover in a rare hail storm in Buenos Aires, Argentina July 26, 2006. The Argentine capital has been hit by unusually warm weather during wintertime in the Southern Hemisphere. REUTERS/Enrique Marcarian (ARGENTINA)

England's Kevin Pietersen stands outside the dressing room as it rains on the eve of the fifth one-day international cricket match between India and England in Guwahati April 8, 2006. Poor weather could mar Sunday's fifth one-dayer after heavy rain and hail washed out training on Saturday. India leads the seven one-day match series by 4-0. REUTERS/Adnan Abidi

An Indian policeman stands guard inside a cricket stadium on the eve of the fifth one-day international cricket match between India and England in Guwahati April 8, 2006. Poor weather could mar Sunday's fifth one-dayer after heavy rain and hail washed out training on Saturday. India leads the seven one-day match series by 4-0. REUTERS/Adnan Abidi

A thunderstorm with dime sized hail left residential streets in Waukesha, Wisconsin covered with hail, oak and maple leaves November 5, 2005. Above normal warm temperatures have caused trees to hold their leaves. REUTERS/Allen Fredrickson

A thunderstorm with dime-sized hail knocked down leaves from trees and sticking them to an auto windshield in Waukesha, Wisconsin November 5, 2005. Above normal warm temperatures have caused trees to hold their leaves. REUTERS/Allen Fredrickson

A thunderstorm with dime-sized hail left sidewalks in Waukesha, Wisconsin covered with hail and maple leaves November 5, 2005. Above normal warm temperatures have caused trees to hold their leaves. REUTERS/Allen Fredrickson

A thunderstorm with dime sized hail leaves residential streets in Waukesha, Wisconsin, covered with hail and maple leaves November 5, 2005. Above normal warm temperatures caused trees to hold their leaves. REUTERS/Allen Fredrickson

Rebecca Nyandeng (R), the widow of John Garang is comforted by a family member in New Site village in Southern Sudan August 1, 2005. Officials of the former rebel Sudan People's Liberation Movement (SPLM) began meeting on Monday to decide the future of the group after its leader Garang died in a helicopter crash. Garang, a key figure in a January peace deal hailed as a rare success story for Africa, died over the weekend after the Ugandan presidential helicopter he was travelling in went down in bad weather. REUTERS/Radu Sigheti RSS/NL

A SPLM officer salutes outside the room where Sudan's First Vice-President and former rebel leader of Sudan People's Liberation Movement (SPLM) John Garang's body lies in New Site village in southern Sudan August 1, 2005. Officials of the former rebel SPLM began meeting on Monday to decide the future of the group after its leader Garang died in a helicopter crash. Garang, a key figure in a January peace deal hailed as a rare success story for Africa, died over the weekend after the Ugandan presidential helicopter he was travelling in went down in bad weather. REUTERS/Radu Sigheti RSS/NL

Rebecca Nyandeng, (bottom), the widow of John Garang is comforted by her family in New Site village in southern Sudan August 1, 2005. Officials of the former rebel Sudan People's Liberation Movement (SPLM) began meeting on Monday to decide the future of the group after its leader Garang died in a helicopter crash. Garang, a key figure in a January peace deal hailed as a rare success story for Africa, died over the weekend after the Ugandan presidential helicopter he was travelling in went down in bad weather. REUTERS/Radu Sigheti RSS/NL

A relative of John Garang cries as she arrives in New Site village in southern Sudan August 1, 2005 where Garang's body lies. Officials of the former rebel Sudan People's Liberation Movement (SPLM) began meeting on Monday to decide the future of the group after its leader Garang died in a helicopter crash. Garang, a key figure in a January peace deal hailed as a rare success story for Africa, died over the weekend after the Ugandan presidential helicopter he was travelling in went down in bad weather. REUTERS/Radu Sigheti RSS/NL

SPLM soldiers guard the coffin draped in the southern Sudan flag of John Garang, Sudan's First Vice-President and former rebel leader of Sudan People's Liberation Movement (SPLM) in New Site village in Southern Sudan August 1, 2005. Officials of the former rebel SPLM began meeting on Monday to decide the future of the group after its leader Garang died in a helicopter crash. Garang, a key figure in a January peace deal hailed as a rare success story for Africa, died over the weekend after the Ugandan presidential helicopter he was travelling in went down in bad weather. REUTERS/Radu Sigheti RSS/NL

SPLM soldiers guard the room where Sudan's First Vice-President and former rebel leader of Sudan People's Liberation Movement (SPLM) John Garang's body lies in New Site village in Southern Sudan August 1, 2005. Officials of the former rebel SPLM began meeting on Monday to decide the future of the group after its leader Garang died in a helicopter crash. Garang, a key figure in a January peace deal hailed as a rare success story for Africa, died over the weekend after the Ugandan presidential helicopter he was travelling in went down in bad weather. REUTERS/Radu Sigheti RSS/NL

SPLM soldiers guard the coffin draped in the southern Sudan flag of John Garang, Sudan's First Vice-President and former rebel leader of Sudan People's Liberation Movement (SPLM) in New Site village in Southern Sudan August 1, 2005. Officials of the former rebel SPLM began meeting on Monday to decide the future of the group after its leader Garang died in a helicopter crash. Garang, a key figure in a January peace deal hailed as a rare success story for Africa, died over the weekend after the Ugandan presidential helicopter he was travelling in went down in bad weather. REUTERS/Radu Sigheti RSS/NL

SPLM soldiers guard the coffin draped in the southern Sudan flag of John Garang, Sudan's First Vice-President and former rebel leader of Sudan People's Liberation Movement (SPLM) in New Site village in Southern Sudan August 1, 2005. Officials of the former rebel SPLM began meeting on Monday to decide the future of the group after its leader Garang died in a helicopter crash. Garang, a key figure in a January peace deal hailed as a rare success story for Africa, died over the weekend after the Ugandan presidential helicopter he was travelling in went down in bad weather. REUTERS/Radu Sigheti RSS/NL