Routine Space Environment Product (Daily)
Issued by NWS
Issued by NWS
605 FXXX12 KWNP 111231 DAYDIS :Product: Forecast Discussion :Issued: 2026 Aug 11 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 was at low levels. Region 4504 (S19, L = 249) decayed to plage. Regions 4507 (N03E44, Bxo/beta) and 4508 (N07E66, Hsx/alpha) were numbered, but remained relatively quiet. No Earth-directed CMEs were observed in available coronagraph imagery. .Forecast... Solar activity is expected to remain at very low to low levels 11-13 Aug. Energetic Particle .24 hr Summary... The greater than 2 MeV electron flux at geosynchronous orbit was at moderate levels. The greater than 10 MeV proton flux at geosynchronous orbit remained at background levels. .Forecast... The greater than 2 MeV electron flux is expected to remain at low to moderate levels through 13 Aug. The greater than 10 MeV proton flux is expected to remain at background levels through 13 Aug. Solar Wind .24 hr Summary... A weak transient was observed at approximately 11/1034 UTC. Total field increased from 5 to 9 nT. The Bz component underwent a brief, southward deflection reaching -6 nT shortly after. Solar wind speeds increased from ~350 km/s to ~410 km/s. Phi was in a negative solar sector. .Forecast... An additional enhancement is possible on 11 Aug into 12 Aug due to weak influences from a small positive polarity coronal hole. More significant solar wind enhancements are anticipated mid to late on 12 Aug with the arrival of CMEs that departed the Sun on 08 Aug with enhanced conditions persisting through 13 Aug. Geospace .24 hr Summary... The geomagnetic field was at quiet levels throughout the period. .Forecast... Quiet to unsettled conditions, with a chance for an isolated active period, are expected for the remainder of 11 Aug. Isolated periods of G1 (Minor) geomagnetic storming are expected on 12 Aug due to CME influences, with quiet to unsettled conditions expected to prevail on 13 Aug as CME effects subside.