VA2OM  > SOLAR    21.07.25 09:30z 54 Lines 1936 Bytes #102 (0) @ WW
BID : 38311_VE2PKT
Read: GUEST
Subj: Solar and Geomagnetic Activity
Path: ED1ZAC<ED1ZAC<LU4ECL<LU9DCE<VE3CGR<VA3BAL<VE2PKT
Sent: 250721/0914Z 38311@VE2PKT.#TRV.QC.CAN.NOAM LinBPQ6.0.24

 
:Product: Weekly Highlights and Forecasts
:Issued: 2025 Jul 21 0208 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# https://www.swpc.noaa.gov/content/subscription-services
#
#                Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity
14 - 20 July 2025

Solar activity was at low levels. The largest flare was a C7.6 from
Region 4136 (N20, L=17, class/area=Cao/210 on 20 Jul) at 20/0741
UTC. C-class activity was also observed from several other regiond
during the highlight period. No Earth-directed CME activity was
observed. 

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
high levels on 14-20 Jul in response to persistent positive polarity
CH HSS influence. 

Geomagnetic field activity reached G1 (Minor) storm levels on 14,
15, and 17 Jul due to positive polarity CH HSS influence. Solar wind
speeds were elevated to as high as 700 km/s on 15 and 17 Jul. The
remaining days were at quiet to active levels despite enhanced solar
wind parameters. 

Forecast of Solar and Geomagnetic Activity
21 July - 16 August 2025

Solar activity is expected to be at mostly low levels with a chance
for M-class (R1-R2, Minor to Moderate) flares for the outlook
period. 

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be at high levels on 21-22 Jul, 24-30 Jul, 5-6 Aug, and
10-16 Aug all due to recurrent CH HSS influences. Low to moderate
levels are expected on the remaining days. 

Geomagnetic field activity is expected to be at active to G1 (Minor)
storm levels on 23 Jul, 1-4 Aug and, 7-14 Aug due to recurrent CH
HSS effects. Quiet to unsettled levels are expected on the remaining
days of the outlook peirod. 
  
 
 73 de VA2OM, SYSOP of VE2PKT
 



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