Posted on February 23, 2015 by Bob Berwyn
Study tracks increased thunderstorm formation over Atlanta
A classic anvil-headed cumulunimbus cloud drops showers just east of the Continental Divide near Grays and Torreys Peak in Colorado.
FRISCO — Along with steadily raising global temperatures in the long-term, human-caused changes in land cover can affect day-to-day weather, including the formation of thunderstorms.
Specifically, urban areas appear to help trigger the formation of thunderstorms, possibly due to an increased concentration of aerosols, according to new research published in the Quarterly Journal of the Royal Meteorological Society. Continue reading
Filed under: climate and weather | Tagged: aerosols, climate, thunderstorms, urbanization, weather | 1 Comment »
Posted on January 4, 2015 by Bob Berwyn
Annual conference includes all-star climate science speakers
November’s above-average temperatures kept Earth on track to record its warmest year on record. Learn more from this year’s Glen Gerberg Weather and Cimate Summit.
FRISCO — This year’s Glen Gerberg Weather and Climate Summit in Breckenridge once again features some notable climate scientists, including James Balog, who has documented the disappearance of Arctic sea ice, and Dr. Richard Knabb, director of the National Hurricane Center. As in past years, the sessions will be webcast live, enabling the general public to listen and even to ask questions online. Continue reading
Filed under: Arctic, climate and weather, climate change, Environment, extreme weather, global warming | Tagged: climate change, climate communications, climate science, Glen Gerberg weather and climate summit, weather | Leave a comment »
Posted on October 23, 2014 by Bob Berwyn
October storm clears the Tenmile Range near Frisco, Colorado
FRISCO — Is there anything better than the sight of a storm clearing over a big mountain range, with lifting clouds and broken bits of sunshine streaming in? After a string of warm and sunny days, a quick storm passed through Summit County Oct. 20, leaving the higher elevations frosted with some new snow. As always, the clearing storm created stunning vistas of mountains and clouds. Follow our Instagram feed for daily photo updates and visit our online gallery for a great selection of Colorado landscape and nature images, available as fine art prints and greeting cards. Continue reading
Filed under: climate and weather, Morning photo, photography, Snow and weather, Summit County Colorado, Summit County snow and weather | Tagged: Colorado, landscape photography, snow, Summit County Colorado, Summit County photography, weather | Leave a comment »
Posted on October 15, 2014 by Bob Berwyn
A dust storm engulfs Stratford, Texas in April of 1935. The drought of 1934 was likely made worse by dust storms triggered by the poor agricultural practices of the time.
Credit: NOAA/George E. Marsh Album.
Severe dust storms spawned even more widespread drought, research shows
FRISCO — With all the recent talk of looming megadroughts, the 1934 peak of the Dust Bowl era still remains the most severe and widespread drought in North America during the past 1,000 years, climate scientists say.
Based on tree-ring studies and other physical records, the only other comparable event was way back in the 1500s.
The extent of the 1934 drought was approximately seven times larger than droughts of comparable intensity that struck North America between 1000 A.D. and 2005, and was caused in part by an atmospheric phenomenon that may have also led to the current drought in California, according to a new study. Continue reading
Filed under: climate and weather, Drought, extreme weather, global warming | Tagged: California drought, climate, climate change, drought, Dust Bowl, extreme weather, weather | 1 Comment »
Posted on October 15, 2014 by Bob Berwyn
A couple of cool spots, and big hot pocket out West in Sept. 2014.
NCDC says it was the 26th-warmest September on record
FRISCO — While 2014 is likely to end up as one of the warmest years on record for the planet, the U.S. hasn’t been quite so warm. A tongue of cool weather has persisted down the center of the country for months, while the farther west you go, the hotter it gets, culminating with the record heat in California.
September fit that trend, with the average temperature well above, but not near record levels in the Lower 48 states. According to the National Climatic Data Center’s latest monthly update, the average temperature was 1.3 degrees Fahrenheit above the 20th century average, ranking it as the 26th warmest September. Precipitation for the month across the country was 0.09 inch above average, ranking near the middle. Continue reading
Filed under: climate and weather, extreme weather, global warming | Tagged: climate, National Climatic Data Center, September 2014 temperatures, state of the climate report, weather | Leave a comment »
Posted on September 6, 2014 by Bob Berwyn
Big surge of subtropical moisture possible early next week
Moisture will be plentiful across Colorado and much of the U.S. the next 5 days.
FRISCO — Hurricane Norbert, now spinning off the coast of Baja, California, could deliver copious amounts of moisture to Colorado early next, according to the National Weather Service, which is already talking about the potential for regional flash flooding.
The Category 3 storm is expected to weaken gradually during the next few days as it moves northwest over cooler water, but the projected path turns the remnant low pressure system eastward, coming ashore over northern Mexico or southern California late in the weekend.
The exact path will determine how much rain falls in Colorado, but National Weather Service forecast maps are showing widespread rain across Colorado, with a bullseye over the north-central mountains.
Grand Junction-based National Weather Service forecasters say subtropical moisture will increase across the Great Basin and western Colorado Monday as a low pressure area off the SoCal coast directs Nortbert’s remnants and more monsoon moisture northeastward.
Storms will be widespread by Monday afternoon with the potential for heavy rain and small hail, as well as a chance for flash floods and debris flows.
Dry air (brown) prevailed over Colorado Saturday morning, but Hurricane Norbert may help boost another surge of late-season monsoon moisture poised to the south.
Filed under: climate and weather, Colorado, Summit County Colorado, tropical storms and hurricanes | Tagged: Colorado, Hurricane Norbert, Southwest monsoon, weather | Leave a comment »
Posted on September 4, 2014 by Bob Berwyn
Layers of clouds and color over Dillon Reservoir.
FRISCO — We’re getting near the time of year that dishes up the most intense sky colors, as the first autumnal weather systems mix together with the remnants of monsoonal moisture. That means layers of clouds at different elevations, like in the top shot in this set — look closely and you’ll see soft, gray cumulus hugging the distant peaks, while a mid-elevation cloud deck helps reflect light and color back toward the ground. And in just a few weeks, as the upper air wind patterns shift for real, we’ll start seeing some of those great wave clouds building over the Rockies, a sure sign of the changing season! Continue reading
Filed under: Colorado, Morning photo, photography, Summit County Colorado | Tagged: clouds, Colorado, Dillon Reservoir, seasons, Summit County photography, weather | 1 Comment »