Tag: climate

Climate: No let up in global warming heat wave across U.S.

Temperature records shattered in Alaska for April and year-to-date

2016 year to date temps US
For January to April 2016, temperatures across most of the U.S. have been far above average.

Staff Report

After a few blistering months, the average temperature across the U.S. cooled down slightly in April in many parts of the country, with the month ending up as the 18th-warmest April on record. But the slight downward tick wasn’t enough to make a big dent in the long-term trend — for the year to date (January-April), it’s the second-warmest such period on record, according to the monthly state of the climate report from NOAA’s National Centers for Environmental Information. Continue reading “Climate: No let up in global warming heat wave across U.S.”

Climate: All U.S. states saw above average temps in March

Alaska is record-warm for year-to-date

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All states in the contiguous U.S. reported above average temperatures for March 2016, according to NOAA’s monthly State of the Climate update.

Staff Report

The average March temperatures across the lower 48 states was 6 degrees Fahrenheit above the 20th century norm — which is a huge anomaly — but in the modern global warming era, only enough to make it the fourth-warmest March on record. According to NOAA’s monthly climate update, compiled by the National Centers for Environmental Information, every state reported above average temperatures for the month, but none was record-warm. See the NOAA monthly climate report here. Continue reading “Climate: All U.S. states saw above average temps in March”

Will the Zika virus spread into the United States?

South Texas, Florida seen as vulnerable

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Climate and demographic factors could make parts of the southern U.S. vulnerable to the spread of the Zika virus.

Staff Report

Combing climate data with travel patterns, researchers with the Center for Disease Control and the National Center for Atmospheric Research say Zika virus outbreaks could occur as soon as this summer in parts of south Texas and Florida.

The study shows that the Aedes aegypti mosquito, which is spreading the virus in much of Latin America and the Caribbean, probably will become more abundant across much of the southern and eastern United States as the weather warms.

Summer weather conditions are favorable for the disease-carrying mosquito as far north as New York City and across the southern tier of the country as far west as Phoenix and Los Angeles, the models show. Continue reading “Will the Zika virus spread into the United States?”

Climate: Warmest winter on record for U.S.

February snow cover below average across North America

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Nearly all of the lower 48 states reported above average temperatures in February 2016.
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Temperatures across most of the western U.S. were between 5 and 15 degrees above average during February and early March 2016.

Staff Report

Federal climate trackers say the past meteorological winter (Dec.-Feb) was the warmest on record for the contiguous 48 states, with Alaska recording its second-warmest winter, according to NOAA’s National Centers for Environmental Information.

For the season, the average temperature across the lower 48 states was 36.8 degrees Fahrenheit, 4.6 degrees above the 20th century average and breaking the record (36.5 degrees Fahrenheit) set in the winter of 1999-2000. Read the full NOAA report here. Continue reading “Climate: Warmest winter on record for U.S.”

Climate: U.S. West very dry in February

Very dry across the West in February 2016.
Very dry across the West in February 2016.

Where’s El Niño?

Staff Report

El Niño didn’t exactly go gangbusters in southwest Colorado last month, where the key river basins received only about 35 percent of average February precipitation. Statewide mountain precipitation was only slightly better, at 56 percent of normal.

“February in the mountains of Colorado is typically a slightly drier month than compared to say, April. But a dry February like this could have big ramifications should April and May not pan out” said Brian Domonkos, Snow Survey Supervisor with the Natural Resources Conservation Service. Continue reading “Climate: U.S. West very dry in February”

Climate: Arctic sea ice sets another record low in February

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Arctic sea ice has been near record-low levels all winter long. Graph courtesy NSIDC.

Winter brings extraordinary ‘heatwave’ to the far north

Staff Report

Arctic sea ice was at a record low extent for the second month in a row in February, according to the National Snow and Ice Data Center. Ice researchers said sea ice grew hardly at all during the first three weeks of the month during a time of year when the sea is extent is usually nearing its peak.

According to the NSIDC’s latest monthly update, the ice did expand a bit toward the end of the month, but above-normal temperatures in the Arctic have persisted all winter long. Arctic sea ice usually reaches its maximum extent in mid to late March, but last year, it peaked early, on Feb. 25, and at a record low extent. Continue reading “Climate: Arctic sea ice sets another record low in February”

Climate: El Niño not a drought-buster for California yet

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Exceptional drought is still widespread across California with a few more months of the rainy season ahead.

Will spring deliver big rains?

Staff Report

Although there are still a few months left in the rainy season, this year’s El Niño hasn’t exactly been the drought buster California was hoping for. Thus far, plentiful precipitation in the northern part of state will go a long way toward replenishing reservoirs, but central and southern California have remained relatively dry.

The “exceptional drought” footprint is now spread across about 38 percent of the state, as compared to 45 percent three months ago, and precipitation in the key snowpack areas of the Sierra Nevada has been about average. Farther south, especially in the L.A. Basin, precipitation is still well below average for the rainy season to date.

That may be due to the fact that the distribution of warm water across the Pacific Ocean is quite different than during past El Niños that brought more widespread heavy precipitation to California. Continue reading “Climate: El Niño not a drought-buster for California yet”