Solar Activity

» 24 hr Summary: Solar activity was at low levels. Low level C-class flares were observed from Regions 4353 (N18W82, Bxo/beta) and 4357 (S13W34, Cri/beta). Slight growth was observed in Region 4357. Separation occurred in Region 4349 (S14W60, Hax/alpha). The rest of the spotted Regions were in decay. New Regions 4362 (S17E72, Hax/alpha) and 4363 (S23E74, Hrx/alpha) both rotated into view from the SE limb and were numbered. No Earth-directed CMEs were observed.

» Forecast: Solar activity is expected to be low with a slight chance for M-class flares (R1-R2, Minor-Moderate) through 01 Feb.

Energetic Particle

» 24 hr Summary: The greater than 2 MeV electron flux reached high levels with a peak flux of 6,959 pfu observed at 29/1805 UTC. The greater than 10 MeV proton flux was below the S1 (Minor) threshold.

» Forecast: The greater than 2 MeV electron flux is expected to continue at moderate to high levels on 30-31 Jan and 01 Feb. The greater than 10 MeV proton flux is expected to remain at or near background levels through 01 Feb.

Solar Wind

» 24 hr Summary: Solar wind parameters reflected negative polarity CH HSS conditions. Solar wind speed increased from approximately 625 km/s to near 700 km/s. Total field remained steady at about 6-8 nT while the Bz component varied between +/-7 nT. Phi angle was predominantly negative.

» Forecast: Enhancements in the solar wind environment are expected on 30-31 Jan under negative polarity CH HSS influences.

Geospace

» 24 hr Summary: The geomagnetic field was at unsettled to active levels due to CH HSS effects.

» Forecast: Quiet to unsettled levels, with isolated active periods, are expected on 30-31 Jan as HSS conditions persist. Mostly quiet levels are expected on 01 Feb as CH HSS influence dissipate.


Prepared by:
The U.S. Dept. of Commerce, NOAA, SWPC