We have had an M6.1 and an X1.1 today. A major X1.1 Solar Flare was detected at 23:08 UTC. This event triggered a 10cm Radio Burst and a Type IV Sweep Frequency Event. More updates to follow should a Coronal Mass Ejection (CME) be associated. A two minute 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications. You can get full real-time information at Solarham.
In addition, the old 1504 system is now rotating into view on the Southeastern limb and looks more magnetically complex than before. It seems we will be experiencing increasing activity during the next several days. There will continue to be a chance for another strong solar flare on into the weekend.
Event Probabilities 07 Jul-09 Jul
Class M 80/80/80 Class X 25/25/25 Proton 10/10/10 PCAF green
Penticton 10.7 cm Flux
Observed 06 Jul 158
Predicted 07 Jul-09 Jul 165/160/155
90 Day Mean 06 Jul 122
Geomagnetic Activity Probabilities 07 Jul-09 Jul
A. Middle Latitudes
Active 30/45/20 Minor storm 10/15/05 Major-severe storm 01/01/01
B. High Latitudes
Active 15/10/15 Minor storm 30/30/30 Major-severe storm 45/55/30
So we would again strongly advise both communication and power delivery activities monitor this situation closely over the next few days. Unshielded electronic devices may also be affected in the high latitude regions.