A collage of various weather events that occurred in 2018 from clockwise: five tropical cyclones simultaneously existing throughout the basins, the Camp Fire in California, and snow from a nor'easter
The following is a list of weather events that occurred in 2018.
As the year began, a tropical depression was moving across the Philippines,[51] and Cyclone Ava was developing northeast of Madagascar.[52] Ava caused at least 51 deaths and US$195 million in damage, and was followed by 13 additional tropical cyclones in the south-west Indian Ocean.[53][54][55] In the Australian region, there were 27 tropical cyclones, including Cyclone Marcus, a powerful cyclone that caused US$75 million in damage in Western Australia.[54][55][56] In the South Pacific Ocean, there were 15 tropical cyclones during the year, including Cyclone Gita, the most intense tropical cyclone to impact Tonga since reliable records began.[54][55][57]
In the northern hemisphere, the western Pacific Ocean was active, with 44 tropical cyclones. The strongest typhoons were Kong-rey and Yutu, which both had 10 minute sustained winds of 215 km/h (130 mph) and a minimum pressure of 900 mbar (27 inHg).[58] In October, Yutu struck Tinian in the Northern Marianas Islands at peak intensity, making it the strongest storm on record to hit the island chain.[59] When Typhoon Jebi struck Japan in September, insured damage totaled around US$15 billion, making it the country's costliest ever typhoon.[60] In July, Tropical Storm Son-Tinh killed more than 200 people when it moved through the Philippines, China, and Vietnam, mostly related to a dam collapse in Laos.[61] In December, Tropical Depression Usman moved through the Philippines, killing 156 people and leaving ₱5.41 billion (US$103 million) in damage.[62] In the north Indian Ocean, there were 14 tropical cyclones, several of which affected land.[63] In May, Cyclone Sagar killed 79 people when it struck Somaliland in the Horn of Africa.[64][65][66]Cyclone Mekunu caused US$1.5 billion in damage and 31 deaths when it struck Oman.[67][68][69]Cyclone Titli killed 85 people when it struck southeastern India in October.[70]
The north-east Pacific Ocean was active, with three Category 5 hurricanes on the Saffir-Simpson scale – Lane, Walaka, and Willa.[71]Lane in August was the wettest on record in Hawaii, with peak rainfall accumulations of 58 inches (1,473 mm) causing US$250 million in damage.[72][73] In October, Walaka affected the Northwestern Hawaiian Islands,[74] and Willa struck southwestern Mexico, causing nine deaths and US$825 million in damage.[75][76][77][78] The Atlantic Ocean featured 16 tropical cyclones,[79] including Hurricane Michael in October, one of only four Category 5 hurricanes to hit the United States at that intensity. Michael struck the Florida panhandle and caused US$25.5 billion in damage as well as 74 deaths.[80] In September, Hurricane Florence caused widespread flooding after setting state precipitation records in North and South Carolina, resulting in US$24 billion in damage and 52 fatalities.[81]
This is a timeline of weather events during 2018. Please note that entries might cross between months, however, all entries are listed by the month it started, except for the December 2017–January 2018 North American cold wave, which was ongoing when 2018 began.
December 23, 2017 – January 19, 2018 – A cold wave caused damaging low temperatures across eastern North America. The cold wave also caused Tallahassee, Florida to receive trace amounts of frozen precipitation for the first time in more than 30 years.[83]
February 8–16 – Tropical Storm Sanba, known in the Philippines as Tropical Storm Basyang, kills 15 people and caused $3.23 million (2018 USD) in damage across the Caroline Islands and the Philippines.
May 14–15 – A tornado outbreak in the Great Plains and Northeastern United States kills six people (1 tornadic[29] and 5 straight-line winds[30]) from 24 tornadoes.
May 16–20 – Cyclone Sagar kills 79 people and caused $30 million (2018 USD) in damage across Yemen, Somalia, Somaliland, Djibouti, and Ethiopia. Cyclone Sagar was the strongest tropical cyclone to make landfall in Somalia and Somaliland in recorded history until 2020.
May 21–27 – Cyclone Mekunu kills 31 people and caused $1.5 billion (2018 USD) in damage across Yemen, Oman, and Saudi Arabia. Cyclone Mekunu was the strongest storm to strike Oman's Dhofar Governorate since 1959.
May 25–June 1 – Tropical Storm Alberto kills 18 people and caused $125 million (2018 USD) in damage across the Yucatán Peninsula, Cuba, the Eastern United States, and Canada.
June 2–11 – Tropical Storm Ewiniar kills 14 people and caused $749 million (2018 USD) in damage across the Philippines, Vietnam, South China, Taiwan, and the Ryukyu Islands.
June 3–13 – Tropical Storm Maliksi kills two people and caused damage across the Philippines and Japan.
July 3–12 – Typhoon Maria, known in the Philippines as Typhoon Gardo, kills two people and caused $628 million (2018 USD) in damage across the Mariana Islands, the Ryukyu Islands, Taiwan, and China.
July 15–24 – Tropical Storm Son-Tinh, known in the Philippines as Tropical Storm Henry, kills 173 people with over 1,100 missing and caused $323 million (2018 USD) in damage across the Philippines, South China, Vietnam, Laos, Thailand, and Myanmar.
July 17–26 – Tropical Storm Ampil, known in the Philippines as Severe Tropical Storm Inday, kills one person and caused $241 million (2018 USD) in damage across the Ryukyu Islands and East and Northeast China.
July 20–23 – Tropical Depression Josie kills 16 people and caused $87.4 million (2018 USD) in damage across the Philippines and Taiwan.
July 23 – August 4 – Typhoon Jongdari caused $1.46 billion (2018 USD) in damage across Japan and East China after becoming the fourth tropical cyclone since 1951 to approach Honshu on a westward trajectory.
August 3 – A violent EF4 tornado in Manitoba, Canada kills one person and injured two others. The tornado was the first (and only) violent tornado in North America during 2018, destroying parts of Alonsa, Manitoba Canada. It also causes $2 million in damage.[98]
November 8–25 - The Camp Fire, across northern California, killed 85 people with one missing, injured 17 others, and caused $16.65 billion (2018 USD) in damage, becoming the costliest wildfire on record.
November 23 - A monthly low temperature record is set in two cities in New York. Syracuse saw a low of −1 °F (−18 °C) and Binghamton saw a record low of 0 °F (−18 °C). Several other cities saw daily record lows set.[100]Bridgeport, Connecticut also set a record for coldest November day with a low of 13 °F (−11 °C).[101]
November 30 – December 2 – A tornado outbreak across the United States kills one person and injured 32 others from 49 tornadoes.[48] This outbreak was the largest December tornado event on record in Illinois history.[105]
^"Tennessee Event Report: EF2 Tornado" (Report). National Centers for Environmental Information. National Weather Service Weather Forecast Office in Nashville, Tennessee. 2018. Retrieved July 16, 2018.
^"Arkansas Event Report: EF2 Tornado" (Report). National Centers for Environmental Information. National Weather Service Weather Forecast Office in Memphis, Tennessee. 2018. Retrieved July 16, 2018.
^ ab"Louisiana Event Report: EF1 Tornado" (Report). National Centers for Environmental Information. National Weather Service Weather Forecast Office in Shreveport, Louisiana. 2018. Retrieved December 7, 2018.
^ ab"Louisiana Event Report: EF1 Tornado" (Report). National Centers for Environmental Information. National Weather Service Weather Forecast Office in Shreveport, Louisiana. 2018. Retrieved December 7, 2018.
^ ab"North Carolina Event Report: EF2 Tornado" (Report). National Centers for Environmental Information. National Weather Service Weather Forecast Office in Raleigh, North Carolina. 2018. Retrieved October 2, 2018.
^ ab"North Carolina Event Report: EF1 Tornado" (Report). National Centers for Environmental Information. National Weather Service Weather Forecast Office in Blacksburg, Virginia. 2018. Retrieved October 2, 2018.
^ ab"New York Event Report: EF0 Tornado" (Report). National Centers for Environmental Information. National Weather Service Weather Forecast Office in New York, New York. 2018. Retrieved December 10, 2018.
^"North Dakota Event Report: EF2 Tornado" (Report). National Centers for Environmental Information. National Weather Service Weather Forecast Office in Bismarck, North Dakota. 2018. Retrieved March 10, 2019.
^ ab"Mississippi Event Report: EF1 Tornado" (Report). National Centers for Environmental Information. National Weather Service Weather Forecast Office in Jackson, Mississippi. 2018. Retrieved March 18, 2019.
^ ab"Maryland Event Report: EF1 Tornado" (Report). National Centers for Environmental Information. National Weather Service Weather Forecast Office in Washington, DC. 2018. Retrieved March 18, 2019.
^ ab"Tennessee Event Report: EF2 Tornado" (Report). National Centers for Environmental Information. National Weather Service Weather Forecast Office in Nashville, Tennessee. 2018. Retrieved March 18, 2019.
^"NWS Damage Survey for 12/01/18 Tornado Event #6" (Report). Iowa Environmental Mesonet. National Weather Service Weather Forecast Office in Lincoln, Illinois. December 3, 2018. Retrieved December 5, 2018.
^Houston, Sam; Birchard, Thomas (June 9, 2020). Tropical Cyclone Report: Hurricane Walaka(PDF) (Report). Central Pacific Hurricane Center. Archived(PDF) from the original on June 12, 2020. Retrieved September 4, 2020.
^"Hay daños evidentes en Lerdo por lluvias" [There is evident damage in Lerdo due to rains]. El Siglo de Durango (in Spanish). November 3, 2018. Archived from the original on November 4, 2018. Retrieved November 4, 2018.
^Stacy Stewart and Robbie Berg (May 30, 2019). Hurricane Florence (AL062018)(PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Archived(PDF) from the original on October 2, 2019. Retrieved September 18, 2019.
^"Iowa Event Report: EF3 Tornado" (Report). National Centers for Environmental Information. National Weather Service Weather Forecast Office in Des Moines, Iowa. 2018. Retrieved March 11, 2019.
^"Iowa Event Report: EF2 Tornado" (Report). National Centers for Environmental Information. National Weather Service Weather Forecast Office in Des Moines, Iowa. 2018. Retrieved March 11, 2019.
^"Iowa Event Report: EF3 Tornado" (Report). National Centers for Environmental Information. National Weather Service Weather Forecast Office in Des Moines, Iowa. 2018. Retrieved March 11, 2019.