Routine Space Environment Product (Daily)
Issued by NWS
Issued by NWS
624 FXXX12 KWNP 211231 DAYDIS :Product: Forecast Discussion :Issued: 2025 Nov 21 1230 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # Product description and SWPC contact on the Web # http://www.swpc.noaa.gov/wwire.html # # Forecast Discussion # Solar Activity .24 hr Summary... Solar activity remained at low levels. Only low-level c-class x-ray activity was observed. Newly numbered Region 4289 (S03E49, Hrx/alpha) was simple and quiet. No significant growth was observed among the remaining numbered active regions. No Earth directed CMEs were observed in available coronagraph imagery. .Forecast... Solar activity is expected to remain at low levels over 21-23 Nov, with a slight chance for moderate levels (R1-R2/Minor-Moderate). Energetic Particle .24 hr Summary... The greater than 2 MeV electron flux reached high levels between 20/1040 UTC and 20/1910 UTC, with a maximum flux of 2,883 pfu at 20/1435 UTC. The greater than 10 MeV proton flux remained at background levels. .Forecast... The greater than 2 MeV electron flux is likely to remain at moderate levels through 23 Nov. The greater than 10 MeV proton flux in expected to remain at background levels through 23 Nov. Solar Wind .24 hr Summary... Solar wind parameters suggested the influence of a negative polarity coronal hole, with an possible embedded transient. Total magnetic field strength reached a peak of 18 nT at 20/1420 UTC and slowly decreased to ~10 nT by the end of the reporting period. No significant periods of southward Bz were observed. Solar wind speeds ranged between ~400-500 km/s. .Forecast... Enhancements in solar wind are expected to continue, but wane, over 21-22 Nov due primarily to diminishing coronal hole effects. Mostly nominal conditions are likely for 23 Nov. Geospace .24 hr Summary... The geomagnetic activity was quiet to unsettled during the period. .Forecast... The geomagnetic field is likely to reach active conditions on 21 Nov and unsettled on 22 Nov due to waning solar wind enhancements. Mostly quiet conditions are expected on 23 Nov.