July has been so hot thus far that scientists calculate that this month will be the hottest globally on record and likely the warmest human civilization has seen, even though there are several days left to sweat through.
The World Meteorological Organization and the European Union’s Copernicus Climate Change Service on Thursday proclaimed July’s heat is beyond record-smashing.
June 2023 was record hot for some parts of the U.S., while other locations were roiled by severe weather and poor air quality, according to NOAA’s National Centers for Environmental Information. Heat waves led to record high temperatures in Puerto Rico, the Northeast, Mid-Atlantic, Great Lakes, Texas, and Louisiana.
Thick smoke from Canadian wildfires created air quality issues for millions of people in portions of the Northeast and Great Lakes this June. On June 7, around 100 million people across 16 states were under air quality alerts while New York City reported the worst air quality of major cities worldwide. According to the July 4 U.S. Drought Monitor report, about 27.0% of the contiguous U.S. was in drought, up about 8.0% from the end of May. Most of the drought expansion took place in the Midwest, Texas, and the South.
The average temperature of the contiguous U.S. in June was 69.0°F, 0.5°F above average, ranking in the middle third of the 129-year record. Generally, June temperatures were below average from California to the central Plains and across much of the Mid-Atlantic and Southeast. 
Temperatures were above average from the Northwest to the northern Plains, as well as in the southern Plains and Florida Peninsula. North Dakota ranked third warmest on record for June while two additional states ranked among their top-10 warmest on record. Conversely, West Virginia and Virginia had their ninth- and 10th-coldest June on record, respectively.
The Alaska statewide June temperature was 50.0°F, 0.8°F above the long-term average, ranking in the middle third of the 99-year period of record for the state. Above-normal temperatures were observed across the Aleutians and in parts of the North Slope and the Southeast during the month while small pockets of below-average temperatures were observed in interior portions of the state.
June precipitation for the contiguous U.S. was 2.85 inches, 0.08 inch below average, ranking in the middle third of the historical record. Precipitation was above average across much of the West and in parts of the Southeast and New England.
Precipitation was below average across much of the Midwest and in parts of the Northwest, Southwest, southern Plains, Mid-Atlantic and southern New England. Wisconsin and Michigan each had their fifth-driest June on record, while two additional states had their top-10 driest June on record. Conversely, Wyoming ranked third wettest with two additional states ranking among their top-10 wettest June on record.
Across the state of Alaska, the average monthly precipitation was 2.85 inches, making last month the 19th-wettest June in the 99-year record. Conditions were wetter than average across most of the state while parts of the Northeast, Southwest and Panhandle were near normal and parts of the Southeast Interior and Aleutians observed below-normal precipitation during the month.
Three new billion-dollar weather and climate disasters were confirmed this month, two of which occurred during the month of May. All of these disasters were severe storm events.
For 2023 to-date, 12 weather and climate disasters have losses exceeding $1 billion. These disasters consisted of 10 severe storm events, one winter storm and one flooding event. The total cost of these events exceeds $32.7 billion (CPI-adjusted), and they have resulted in 100 direct and indirect fatalities. For this year-to-date period, the first six months of 2023 rank second-highest for disaster count, behind 2017 with 14 disasters and behind 2021 which had $42.5 billion in terms of total cost.
An already warming Earth steamed to its hottest June on record, smashing the old global mark by nearly a quarter of a degree (0.13 degrees Celsius), with global oceans setting temperature records for the third straight month, the U.S. National Oceanic and Atmospheric Administration announced Thursday.
June’s 61.79 degrees (16.55 degrees Celsius) global average was 1.89 degrees (1.05 degrees Celsius) above the 20th Century average, the first time globally a summer month was more than a degree Celsius hotter than normal, according to NOAA
Sea lions and dolphins have been washing up sick or dead on Southern California beaches, poisoned by eating fish containing a dangerous neurotoxin. It’s the result of a harmful algae bloom, a natural phenomenon that turns water blue, bright green, brown or red, and occurs mostly in the summer and fall.
The target of keeping long-term global warming within 2.7 Fahrenheit is moving out of reach, climate experts say, with nations failing to set more ambitious goals despite months of record-breaking heat on land and sea.
As envoys gathered in Bonn in early June to prepare for this year’s annual climate talks in November, average global surface air temperatures were more than 2.7F above pre-industrial levels for several days, the EU-funded Copernicus Climate Change Service said.
Though mean temperatures had temporarily breached the 2.7F threshold before, this was the first time they had done so in the northern hemisphere summer that starts on June 1. Sea temperatures also broke April and May records.
“We’ve run out of time because change takes time,” said Sarah Perkins-Kirkpatrick, a climatologist at Australia’s University of New South Wales.
During the El Niño of 1983, Californians counted their blessings. The warm Pacific waters sloshing eastward certainly brought heavy spring rains and record snow. But the state largely escaped the flood risks being frantically managed farther east.
Americans can likely expect summer temperatures to be even more sweltering than usual, according to the National Oceanic and Atmospheric Administration.
Hotter-than-normal temperatures are possible for much of the U.S., with all of the East Coast, the South, the West Coast and Rockies forecast to sustain scorching conditions, according to the NOAA’s Summer Outlook, released on Thursday.
Against the backdrop of a severe drought linked with global warming, conservation advocates and Native Americans in California are calling for a temporary emergency stop to all surface water diversions from Mono Lake, contending that continuing to drain the watershed, along with the long-term drought, threaten critical ecosystems, as well as the Kootzaduka’a tribe’s cultural connection with the lake.
Researchers at UC San Diego have launched a year-long project aimed at better understanding the region’s clouds and, by extension, global warming.
A bevy of equipment provided by the U.S. Department of Energy was recently deployed on Mount Soledad and at the university’s Ellen Browning Scripps Memorial Pier.
As California emerges from a two-week bout of deadly atmospheric rivers, a number of climate researchers say the recent storms appear to be typical of the intense, periodic rains the state has experienced throughout its history and not the result of global warming.
Although scientists are still studying the size and severity of storms that killed 19 people and caused up to $1 billion in damage, initial assessments suggest the destruction had more to do with California’s historic drought-to-deluge cycles, mountainous topography and aging flood infrastructure than it did with climate-altering greenhouse gasses.
The Water News Network is San Diego County’s source for water news and information.
