Incoming coronal mass ejection could trigger moderate (G2) to strong (G3) geomagnetic storm conditions on March 18-19; northern flights might be possible at mid-latitudes. The National Oceanic and Atmospheric Administration's (NOAA) Space Weather Prediction Center (SWPC) has issued a G2 geomagnetic storm warning for March 19 (UTC) — which translates to late March 18 in North America — with G1 conditions likely to conti... [4179 chars]