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Wednesday, May 15, 2019

Aurora Alert for the 15th to 16th of May 2019


Aurora Alert! Due to some Coronal Mass Ejections on the sun in recent days which were facing towards the Earth, we may get some aurora on the 15th and 16th of May 2019.

Radio wise, it may result in the following...

1) HF...Poor conditions on the HF bands except for a possible short enhancement when the particle front arrives.

2) Sporadic-E... It may well result in poor Sporadic-E conditions.

3) VHF... It may result in good auroral propagation on 50 MHz, 70 MHz and 144 MHz. If you have a directional antenna, point it North.

Some data from European Magnetometers here... https://www.spaceweatherlive.com/en/auroral-activity/magnetometers
Alert message for North America.



Space Weather Message Code: ALTK07
Serial Number: 114
Issue Time: 2019 May 14 0901 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2019 May 14 0859 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

Some data from European Magnetometers here... https://www.spaceweatherlive.com/en/auroral-activity/magnetometers

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