- **Q: What exactly are the northern lights?
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Science / Astronomy
Skygazers across parts of the United States may have a rare opportunity to witness the aurora borealis, or northern lights, this week. A significant geomagnetic storm, triggered by recent solar activity, is expected to enhance the visibilit...
The upcoming aurora display is the result of significant space weather activity. The sun recently experienced a double eruption of solar magnetic filaments (on April 12th and 13th), launching two Coronal Mass Ejections (CMEs) – large expulsions of plasma and magnetic field – towards Earth. When these CMEs collide with our planet's magnetosphere, they can trigger geomagnetic storms.
The National Oceanic and Atmospheric Administration’s Space Weather Prediction Center (NOAA SWPC) has issued a G3 (Strong) geomagnetic storm watch for April 16th. The G-scale ranges from G1 (Minor) to G5 (Extreme). A G3 storm is strong enough to potentially push the aurora visible latitudes further south, possibly reaching states like Illinois and Oregon (around the 50° geomagnetic latitude line).
**Potential Viewing Challenges:** Weather conditions on the ground can impact visibility. AccuWeather forecasts suggest potential cloud cover, rain, and even snow in the Northeast and eastern Great Lakes, possibly improving Wednesday night. The Midwest and northern Plains may have better viewing conditions Tuesday, with clouds increasing Wednesday. The Pacific Northwest and Rockies might face clouds Tuesday, with potential clearing in Washington and Oregon by Wednesday.
**How to Prepare for Viewing:** - **Check Forecasts:** Monitor NOAA's 30-minute Aurora forecast and use apps like "My Aurora Forecast & Alerts" or "Space Weather Live" for real-time updates specific to your location. - **Find Darkness:** Get away from urban light pollution. Rural areas, parks, or elevated locations facing north are ideal. - **Be Patient:** Auroras can ebb and flow. The best viewing times are typically the darkest hours, between 10 p.m. and 2 a.m. - **Photography:** Even if faint to the naked eye, long-exposure photography (using a tripod and night mode on a smartphone or a DSLR with appropriate settings) might capture the colors.
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Have you ever seen the northern lights before? Do you plan on trying to spot them this week? Let us know your experiences!
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