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UPDATED GEOMAGNETIC STORM FORECAST: NOAA forecasters have downgraded the current geomagnetic storm watch from category G3 (strong) to category G2 (moderate). This is in response to a lack of significant CME impacts on Aug. 18th. CME impacts are still possible on Aug. 19th and 20th, however, especially from yesterday's partial halo CME, described below. High-latitude auroras remain likely as we enter the weekend.