Geomagnetic conditions globally reached active levels (NOAA Kp 4+ ) between 06:00 UTC and 09:00 UTC on May 18. Geomagnetic conditions locally were mostly at unsettled to active levels (K BEL 3 to 4). Active conditions are expected over the next 24 hours, under the continuous influence of the high-speed stream from the elongated, mid-latitude, positive polarity coronal hole (SIDC Coronal Hole 104).
The solar wind conditions (ACE and DSCOVR) were enhanced over the last 24 hours, likely due to the arrival of a high-speed stream from the elongated, mid-latitude, positive polarity coronal hole (SIDC Coronal Hole 104). Speed values increased up to 700 km/s. The interplanetary magnetic field values were between 6 nT and 19 nT. The Bz component varied between -14 nT and 13 nT. The interplanetary magnetic field angle phi was mostly in the positive sector. Further enhancements in the solar wind conditions may be expected over the next 24 hours, under the continuous influence of the high-speed stream from the elongated, mid-latitude, positive polarity coronal hole (SIDC Coronal Hole 104).