Parts of central and southern USA, including Texas, Oklahoma, Arkansas, South Dakota and Colorado, endured storms, tornadoes, torrential rainfall and flooding in a weekend which also a tropical storm hit parts of the Carolina coast.
One person was killed in flash floods in Texas after his vehicle had been dragged into the flooded Red River at Cooke County on the evening of Thursday 07 May 2015.
Flash floods were also reported in Denton County, where around 6 people had to be rescued in dramatic fashion by Texas Army National Guard helicopters near Krum. Heavy rain on already saturated ground had left Hickory Creek and Clear Creek overflowing near Krum and Sanger in Denton County.
One person was killed and 3 others injured by a tornado that touched down near Cisco, Texas on Sunday 10 May 2015.
In South Dakota, nine people were injured by a tornado in the town of Delmont, which was preventively evacuated.
Parts of Oklahoma, including Oklahoma City, suffered from severe floods last week. On Sunday 10 May, flood warnings continued for Adair, Atoka, Carter, Cherokee, Choctaw, Creek, Haskell, Latimer, LeFlore, Mayes, MCurtain, McIntosh, Murray, Muskogee, Okfuskee, Okmulgee, Pittsburg, Pushmataha, Seminole, Sequoyah, Tulsa and Wagoner counties.
WMO say that 103 mm of rain fell in a 24 hour period between 10 and 11 May 2015 in Fort Smith, Arkansas. Flooding has been reported in Franklin and Johnson counties.
Nearly 18 inches (45 cm) of snow fell in southern Colorado and several roads in the north-east of the state were closed due to flooding.
Tropical Storm Ana, Carolina Coast
Tropical Storm Ana, the first named storm of the 2015 Atlantic hurricane season, weakened after making landfall near Myrtle Beach, South Carolina, but high surf and flooding still threatened the coast.
The storm was moving very slowly north and is expected to bring heavy rainfall of between 1 to 3 inches (25 to 76 mm) to parts of the Carolina coast. Between 10 and 11 May 2015, 75 mm of rain fell in 24 hours at Wilmington, North Carolina, according to WMO.