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VA2OM > SOLAR 22.09.25 09:25z 53 Lines 2134 Bytes #999 (0) @ WW
BID : 45709_VE2PKT
Read: GUEST
Subj: Solar and Geomagnetic Activity
Path: HB9ON<DK0WUE<PI8ZTM<PI8LAP<K5DAT<VE2PKT
Sent: 250922/0911Z 45709@VE2PKT.#TRV.QC.CAN.NOAM LinBPQ6.0.25
:Product: Weekly Highlights and Forecasts
:Issued: 2025 Sep 22 0241 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
15 - 21 September 2025
Solar activity reached R1 (Minor) levels at 19/2141 UTC due to an
impulsive M1.5/3n flare observed from Region 4216 (N10, L=246,
class/area Dai/210). Low activity levels were observed on 15-18 Sep
and 20-21 Sep. No significant 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 from 16-21 Sep with a maximum flux of 6,210 pfu observed
at 18/1655 UTC. Normal to moderate levels were observed on 15 Sep.
Geomagnetic field activity was at G1 (minor) levels on 15-16 Sep and
at G3 (Strong) levels on 15 Sep due to CIR/ negative polarity CH HSS
onset with possible influence from the 11 Sep CME. Quiet to
unsettled levels were observed on 17 Sep as the negative polarity CH
HSS waned. Quiet levels were observed on 18-21 Sep.
Forecast of Solar and Geomagnetic Activity
22 September - 18 October 2025
Solar activity is expected to be at low levels with a chance for
isolated M-class flares throughout 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 22-24 Sep, 30 Sep and 01 Oct, 06
-11 Oct and 13-18 Oct. Normal to moderate levels are expected for
the remainder of the outlook period.
Geomagnetic field activity is expected to be at G1 (Minor) storm
levels on 22 Sep due to influences from a negative polarity CH HSS.
Unsettled to active levels are likely on 23 Sep. Unsettled to active
levels are likely on 29-30 Sep, 03-07 Oct, 11-13 Oct and 18 Oct due
to recurrent CH HSS influences. Quiet to unsettled levels are likely
for the remaining days in the outlook period.
73 de VA2OM, SYSOP of VE2PKT
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