US #Climate September 2022 Assessment: Fifth Hottest September on Record; Heatwave brought record high temperatures to the West – NOAA

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Click the link to read the review on the NOAA website:

Key points:

– The average temperature of the contiguous United States in September was 68.1°F, or 3.2°F above average, ranking as the fifth hottest temperature in the 128-year record. In general temperatures were above average in the Great Lakes to the northeast with record heat in much of the west.

September precipitationfor the contiguous United States was 1.83 inches, 0.66 inches below average, ranking 10th driest on record.Precipitationwas above average in northeast Florida and much of the central Rockies down to California. Precipitation was below average in the Pacific Northwest, from the Plains to the Mississippi Valley, the Great Lakes and parts of the Southeast.

– The United States has experienced 15 weather and climate disasters each with losses exceeding $1 billion This year. It is also a record eighth consecutive year the United States has experienced at least 10 billion-dollar disasters.

Hurricane Ian made landfall in Florida on September 28 as a powerful Category 4 hurricane, causing extensive flooding, damage and loss of life. Ian created additional damage when it made landfall in South Carolina as a Category 1 hurricane.

– Hurricane Fiona caused massive flooding and structural damage in Puerto Rico on Sept. 18, with some areas receiving 12 to 18 inches of rain.

– The remnants of Typhoon Merbok hit the west coast of Alaska on September 17, becoming the strongest storm to enter the Bering Sea in September in 70 years.

– In early September, nearly 1,000 heat records were broken in the western United States.

– According to September 27US Drought Report, about 50.9% of the contiguous United States was in drought. Severe to exceptional drought was widespread from the Great Basin to the Pacific Coast, parts of the Great Plains and Hawaii, with moderate to severe drought in parts of the northeast.

Other highlights:

Temperature

For the month of September, Nevada and Utah rated the hottest on record. In addition to this record heat, near-record temperatures were widespread across the West. California, Idaho, Wyoming and Arizona each had its second-hottest September, with four additional states experiencing the top five hottest Septembers on record.

For the July-September period, the average temperature for the contiguous United States was 73.0°F, 2.8°F above average, ranking as the hottest on record for that 3-month period. Temperatures were above average in most of the contiguous United States with record heat covering much of the West. California, Nevada, Oregon, Washington, Idaho, Montana, Wyoming, Colorado and Utah each experienced its hottest July-September period on record. Seven other states experienced one of the five hottest events for that three-month period.

For the January-September period, the average contiguous U.S. temperature was 56.8°F, 1.7°F above average, ranking in the hottest third on record.Temperatureswere above average from the West Coast to the Gulf Coast and from the Gulf to New England.Californiaranked third hottest and Florida ranked fourth hottest on record for this period. Temperatures were near average in parts of the Upper Midwest and Northern Plains.

The September temperature across the state of Alaska was 43.0°F, 2.4°F above the long-term average. This ranked in the third hottest of the 98-year record period for the state.Temperatureswere above average across much of the state, with parts of southwest Alaska seeing near-average conditions for the month.

Alaska’s temperature from January to September was 32.6°F, 2.5°F above the long-term average, ranking in the warmest third of the state record.Above average temperatures were seen across much of the state, with parts of the North Slope and parts of the Eastern Interior experiencing near-average conditions for this nine-month period.

Precipitation

Dry conditions in the central United States resulted in Oklahoma fifth driest while Mississippi experienced its eighth driest September on record. Arkansas, Missouri and South Dakota each experienced its 10th driest September on record. No state had the top 10 wettest September months.

The January-September rainfall total for the contiguous United States was 21.53 inches, 1.67 inches below average, ranking in the driest third of the all-time record.Precipitationwas above average in parts of the Northeast, Appalachia, Ohio and Tennessee river valleys, lower Mississippi Valley, and parts of the Great Lakes, Southwest, and Northwest. Rainfall was below average over most of the western, central and southern plains and parts of the east coast during the January-September period. California ranked the driest on record while Nebraska ranked sixth driest and Texas ranked eighth driest for this nine-month period.

Average monthly rainfall in the state of Alaska was 6.76 inches, 2.19 inches above average, ranking as the third wettest September in the 98-year record. Much of the state was wetter than average, with parts of the Aluetians and lower Panhandle experiencing near-average conditions during the month.

January through September precipitation ranked the wettest on record for Alaska, with above-average precipitation seen in all regions except the Northeastern Interior and Aleutians.

Other Notable Events

September saw several notable storms that destroyed and flooded parts of the United States and its territories:

– On September 9, Tropical Storm Kay hit California with gusty winds and heavy rain causing mudslides.

– The powerful remnants of Typhoon Merbok hit the west coast of Alaska on September 17, pushing homes off their foundations and destroying protective berms as water flooded communities. It was the strongest storm to enter the Bering Sea in September in 70 years.

– On September 18, Hurricane Fiona caused massive flooding in Puerto Rico, with some areas receiving 12 to 18 inches of rain. One station reported 27.14 inches of rain over a 24-hour period.

– Hurricane Ian, with sustained winds of 150 mph, made landfall in southwest Florida as a Category 4 hurricane on September 28, causing extensive flooding, damage and loss of life .

– On September 30, Ian, with sustained winds of 85 mph, created additional damage when it made landfall in South Carolina as a Category 1 hurricane.

– A heat wave moved west in the first week of September and brought scorching temperatures that set all-time records. On September 9, nearly 1,000 heat records were broken.

– As of October 5, there were 57 active wildfires in the Pacific Northwest (Idaho, Montana and Oregon) that have burned more than 660,000 acres so far in the region.

Drought

According to September 27 US Drought Report, about 50.9% of the contiguous United States was in drought, up about 5.4% from the end of August. Drought conditions extended or intensified in parts of the Mississippi Valley, central and northern plains, northwest, southeast, and parts of the Great Lakes. The drought contracted or was eliminated in parts of the Southwest, Southern Plains, Northeast and Puerto Rico.

Billion dollar weather and climate disasters

From January to the end of September, the United States experienced 15 weather and climate disasters each with losses exceeding $1 billion. These disasters included: 10 severe storms, two tropical cyclones, a flood, a combined drought and heat wave, and a regional fire.

Six new events have been added since the mid-year update, including: Hurricanes Ian and Fiona, Western Wildfires, Kentucky/Missouri Floods, and Two Severe Storms.

The loss of life this year from these disasters exceeds 340 people, with ongoing assessments due to recent hurricane impacts in Florida and Puerto Rico. Over 100 lives were lost in Hurricane Ian and summer heat waves across the western United States.

To date, total losses from damage to property and infrastructure stand at $29.3 billion, but this does not yet include the costs of Hurricane Ian, wildfires in the west and from Hurricane Fiona, which could bring the 2022 total closer to $100 billion, a total reached. in four of the past five years.

It is also a record for the eighth consecutive year where the United States has experienced disasters of $10 billion or more.

The United States has suffered 338 weather and climate disasters since 1980, where aggregate damages/costs reached or exceeded $1 billion (including CPI adjustment through 2022). The total cost of these 338 events exceeds $2.295 trillion.

Monthly outlook

According to September 30 One month outlook from the Climate Prediction Center, much of the contiguous United States from Florida to the West Coast, as well as much of Alaska, has the highest chance of seeing above-normal monthly temperatures in October, so that the greatest chance of below normal temperatures is projected to occur in parts of the mid-Atlantic. Parts of the Southwest, Mid-Atlantic, and Alaska are projected to have the greatest chance of above-normal total monthly precipitation, while the greatest chance of below-normal precipitation will occur from Gulf of Mexico to the northern plains and New Zealand. England. Drought is likely to persist across much of the West, Central Plains and Hawaii, with some improvement and/or elimination of drought likely along the Mid-Atlantic Coast. Drought development is likely from the southern Plains south of the Mississippi Valley, as well as across parts of the central and northern Plains.

According to One month outlook issued October 1 by the National Interagency Fire Center, Southwestern California, Hawaii and parts of the southern Plains and Mississippi Valley have above normal wildfire potential in October

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