Space Weather Forecast - Discussion
Issued: 2025 Apr 03 1230 UTC
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center and processed by SpaceWeatherLive.com
Solar activity
24 h Summary
Solar activity was at low levels. Region 4048 (S16E20, Fkc/beta-gamma)
continued to exhibit separation and slight decay in its intermediate
spots. Consolidation was occurring within its leading spots. The region
also appeared to lose its delta magnetic configuration. Slight growth
was observed in Regions 4044 (N20W37, Dao/beta) and 4049 (S30W06,
Dso/beta). New Region 4050 (N27W09, Bxo/beta) was numbered. No
Earth-directed CMEs were observed.
Forecast
Solar activity is likely to be moderate (R1-R2, Minor-Moderate) with a
slight chance for X-class flares (R3, Strong) on 03-05 Apr.
Energetic Particles
24 h Summary
The greater than 2 MeV electron flux was at normal to moderate levels.
The greater than 10 MeV proton event that began at 31/1105 UTC, reached
a peak flux of 147 pfu at 01/0425 UTC, ended at 02/0910 UTC. Levels
continued to be elevated near 3 pfu, but subsiding.
Forecast
The greater than 2 MeV electron flux is expected to be at normal to
moderate levels on 03-04 Apr. A chance for high levels is likely on 05
Apr due to CH HSS influence. There is a slight chance for a greater than
10 MeV proton event on 03-05 Apr.
Solar Wind
24 h Summary
Solar wind parameters continued to be weakly enhanced under transient
effects. Total field ranged from 6-11 nT with the Bz component between
+6/-9 nT. Solar wind speed averaged around 450 km/s. Phi angle was
positive.
Forecast
Weak transient activity will likely continue through early on 03 Apr.
Another enhancement is expected early to midday on 04 Apr due to the
arrival of a CIR preceding a recurrent, negative polarity CH HSS. HSS
influence is expected to persist through 05 Apr.
Geospace
24 h Summary
The geomagnetic field was at quiet to active levels due to CME
influence.
Forecast
Unsettled to active levels are expected through early on 03 Apr due to
residual CME influence. On 04-05 Apr, CIR/CH HSS is expected to cause
unsettled to G1 (Minor) storm conditions.