November 14, 2011
It takes more than a ruler in a snowbank to get accurate snow depth measurements.
Closeup of a ruler
November 14, 2011
PLOWS campaign opens a window on how snow develops in clouds.
UCAR News Center
October 26, 2011
NCAR scientists have performed one of the most detailed simulations ever of a massive tornado outbreak. They simulated two waves of tornadic storms that occurred on April 27,2011 in Alabama, the deadliest U.S. tornado day since 1925.
Satellite image of southeastern U.S. with swirling storms.
September 22, 2011
The DYNAMO field project will help improve long-range weather forecasts and seasonal outlooks by focusing on the Madden-Julian Oscillation.
radar at DYNAMO field project
September 07, 2011
Every so often, a dome of upper-level high pressure sits in place for a few days, sometimes as long as several weeks. A major block can produce seemingly endless stretches of blazing heat or bitter cold. By the time it dissipates, it may leave behind a whole stack of broken weather records and an array of disastrous consequences.
Ronald Reagan Washington National Airport under a heavy snow
September 07, 2011
A group of scholars and students from nine countries came together in Boulder this summer for two weeks of study dedicated to the world’s second largest and second most populous continent.
UCAR Magazine
September 07, 2011
The MetEd online training service covers topics in meteorology, weather forecasting, and related geosciences. Users can delve into everything from satellite meteorology to tsunami preparedness and forecasting dust storms.
Tropical meteorology module illustration
September 07, 2011
According to Rick Anthes, the human and economic costs of weather-related disasters would be far greater without NOAA’s satellite and radar observations and weather forecast models.
August 22, 2011
Jonathan Vigh's Tropical Cyclone Guidance Project lets hurricane followers see the projected the path and strength of tropical cyclones.
June 30, 2011
The inadvertent cloud-seeding effect occurs up to about 6 percent of the time at major airports.
June 09, 2011
Prior to massive flooding early in 2011, long-term drought plagued the Australian state of Queensland . As part of a broad research program on cloud seeding, NCAR researchers have been steadily crunching data from a 2008–09 field project that looked into how to make the clouds drop more rain on the region.
classroom scene
June 03, 2011
A new study led by NCAR’s Wei Yu and CU-Boulder’s Weiqing Han looks at the effects of the Madden-Julian Oscillation (MJO), the largest source of intraseasonal (within one season) variability in the tropics, causing wet and dry periods to alternate.
Ocean waves.
May 06, 2011
The surfeit of snowfalls across the U.S. East Coast over the last two winters brought ample evidence of just how much the white stuff can vary from place to place—and how difficult it is to assess accurately.
UCAR Magazine
May 06, 2011
Rick Anthes, UCAR president, looks at atmospheric predictability in general and presents some remarkable examples of recent successful experimental predictions.
Cyclone Nargis in Bay of Bengal
May 06, 2011
Clark Evans from the University of Wisconsin examines Tropical Storm Erin, the rare cyclone that actually became stronger over Oklahoma than it did over water.
April 28, 2011
How could a tornado outbreak kill more than 200 people? Several factors—meteorological, geographical, and sociological—came together in a rare and deadly way.
UCAR Magazine
April 12, 2011
FIP-Severity provides 12-hour icing forecasts to pilots and forecasters on the likelihood of encountering dangerous in-flight icing conditions.
Map of upper Midwest with dark blue areas of potentially severe icing
March 10, 2011
Snowstorms have been a dime a dozen across much of the central and eastern United States over the last few months, but four of them got special scrutiny.
Grad students and Doppler on Wheels unit
March 08, 2011
The biggest upgrade to the U.S. weather-radar network in 15 years gets rolling this winter with a minimum of fanfare—debuting under the radar, as it were. But the new capabilities should get their fair share of attention in the long run.
Dual-polarization radars sending out signals
February 23, 2011
A case study from NCAR looks at how coastal residents assessed their risks and made decisions leading up to Hurricane Ike.
Debris on streets.
February 15, 2011
A new NCAR study compares two different methods for forecasting power production at wind farms: turbine-based versus farm-based.
Wind turbines at sunset.
February 10, 2011
A new study by NCAR scientists looks at the accuracy of snow gauges. Making accurate measurements of snowfall is critical for weather forecasting, climate studies, and hydrology. But a combination of snow gauge geometry and weather conditions can lead to systematic measurement errors.
A close-up image of a snowflake.
December 30, 2010
It's good to remind ourselves how far weather prediction has come in recent years. The ferocious winter storm that assailed the U.S. Atlantic coast in late December 2010 offers a great case in point.
A motorist near Central Park tries to enter his snowbound vehicle
December 02, 2010
Issuing a five-day weather forecast was once a daring enterprise. Today, we’re not only accustomed to long-range weather forecasts but also to seasonal-scale outlooks. Hurricanes and sea ice show how far we've come.
Hurricanes Igor and Julia, 15 September 2010
November 03, 2010
International collaboration has always been at the heart of COSMIC, a six-satellite network that intercepts GPS signals to measure weather, climate, and space weather variables. Now one of the leading university collaborators on COSMIC, the University of Graz, is UCAR’s latest international affiliate.
UCAR president Rick Anthes and representatives from University of Graz

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