What's causing this? Protons accelerated by the May 7th halo CME are now hitting our planet. Frequencies below 15 MHz are almost completely blacked out, while anything below 35 MHz is being attentuated, at least a little. Red zones in this global map show where shortwave transmissions are being absorbed. A deep polar cap absorption ( PCA) event is in progress: POLAR CAP ABSORPTION EVENT: Don't try to use a shortwave radio inside the Arctic Circle this week. The intensity of the flares is increasing, and an X-flare may be in the offing before the backward sunspot rotates off the solar disk this weekend. This morning's strong M7-class explosion was the fourth M-flare in the last day and a half: INTENSIFYING SOLAR ACTIVITY: Reversed-polarity sunspot AR3296 won't stop flaring. During strong storms, auroras can descend to mid-latitudes and be visible in US states such as Oregon, Nebraska, and Virginia. Storm levels should range from G1 (Minor) to G2 (Moderate) with a slight chance of G3 (Strong). GEOMAGNETIC STORM WATCH: Geomagnetic storms are possible on May 10th and 11th in response to an incoming CME from reversed-polarity sunspot AR3296. Neutron counts from the University of Oulu's Sodankyla Geophysical Observatory show that cosmic rays reaching Earth are slowly declining-a result of the yin-yang relationship between the solar cycle and cosmic rays. Credit: SDO/HMIĬosmic Rays Solar Cycle 25 is intensifying, and this is reflected in the number of cosmic rays entering Earth's atmosphere.

Reversed-polarity sunspot AR3296 poses a continued threat for strong M-class solar flares.

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