Weather folklore, like any folklore, is deeply rooted in patterns that were observed by individuals many years ago. Hundreds to even thousands of years ago, people had very little understanding of how the weather works. Since they did not have TV, radio, or the Internet, they would keep track of what happened each day. Sometimes they would find a pattern …
Beautiful and Bizarre Optical Wonders of the Sky
Almost every day, as we look into the atmosphere, we can see some beautiful—and sometimes unusual—optical sights. These occur due to sunlight interacting with particles in the atmosphere. Light from the sun is made up of a spectrum of colors that we normally perceive as plain white light. But as this light passes through water, ice, smog, or smoke, the …
After a Cold Winter: Spring Lawn Care at Lake Anna
After one of the coldest winters in several years, we can finally enjoy the spring season and turn our attention to lawn care. Typically, we experience beneficial rains throughout most of the spring. When combined with balanced chemical applications, these rains can help create a lush summer lawn. Hopefully, the extreme cold has also reduced some of the bug populations …
Lake Anna’s Microclimate: Warm Water Influence
Amicroclimate is defined as atmospheric conditions that are slightly different from the larger areal climate conditions. Some of these can be significant differences that create impacts. Microclimates exist in many areas like cities (heat island) and around lakes, oceans, and mountainous areas. Lake Anna is unique due to the Nuclear Power Plant that artificially warms the water over portions of …
Weather in Space
Thunderstorms, tornadoes, blizzards and heat waves are of no concern to the forecasters at the Space Weather Prediction Center (SWPC) in Boulder, Colorado. This is a group of very specialized scientists that are more interested in such things as the solar wind, geomagnetic and radiation storms, and radio blackouts. The SWPC provides real-time monitoring and forecasting of solar and geophysical …
Winter Storm to Bring Treacherous Travel and Wintry Mix to Lake Anna Area
Lake Anna Weather is brought to you by Michael Eckert. To keep up to date with this storm and other weather alerts, join Lake Anna Weather here. As central and northern Virginia brace for an approaching winter storm, residents and visitors to Lake Anna should prepare for challenging travel conditions starting Sunday evening into Monday. While the weekend begins quietly, …
What does an Altimeter Have to do with Flying a Plane?
An altimeter is an instrument that measures air pressure and uses that to determine the altitude of an object with respect to a fixed level. Before we get into the details, we need to review the history of pressure measurement. A barometer is used to tell us the pressure of the air at a particular location. Galileo was puzzled about …
Winter Weather Forecast: What to Expect this Season
Several people have asked about the upcoming winter season and whether they should get ready for snow or prepare for another mild winter. The last three winters were very mild with temperatures well above normal and almost no significant snow. Our last big winter storm was Jan 2022 when around 12” of heavy wet snow blanketed the region. This was …
Upper, Middle, and Lower Basins: Understanding Lake Anna’s Watershed and Effect of Runoff
Basin Map Courtesy of Randy Thomas. Consensus seems to agree that the Upper part of Lake Anna is defined as the area above the Splits. This border is from just below Rose Valley to the State Park. The Middle is from the Splits to around the Power Plant, and the Lower is below the Power Plant. The Watershed (see map) …
First Frost/Freeze at Lake Anna
Now that we are solidly into the Fall Season, the next question is when will our first frost or freeze occur? The term “frost” is used in describing the process of ice accretion or deposit upon things outside when the air temperature drops to or below freezing (32 deg F or 0 deg C). Frost is basically the cousin of …