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VA2OM > SOLAR 24.11.25 11:33l 59 Lines 2389 Bytes #999 (0) @ WW
BID : 52932_VE2PKT
Subj: Solar and Geomagnetic Activity
Path: DB0FHN<DB0RKB<DK0WUE<PD0LPM<VE3CGR<VE2PKT
Sent: 251124/1016Z 52932@VE2PKT.#TRV.QC.CAN.NOAM LinBPQ6.0.25
:Product: Weekly Highlights and Forecasts
:Issued: 2025 Nov 24 0142 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
17 - 23 November 2025
Solar activity was at low levels. C-class activity was observed from
Regions 4274 (N25, L=274), 4284 (S07, L=177, class/area Dai/150 on
19 Nov), 4290 (S10, L=035, class/area Cao/120 on 22 Nov) and 4291
(S14, L=028, class/area Dao,120 on 22 Nov).
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit reached
high levels on 19-20 Nov with a peak flux of 2,880 pfu on 20/1435
UTC. Normal to moderate levels were reached on 17-18 Nov and 21-23
Nov.
Geomagnetic field activity was at mostly quiet to unsettled levels
with isolated active levels observed early on 17 Nov and midday on
23 Nov. Solar wind parameters were enhanced midday on 20 Nov when Bt
reached 18 nT and Bz reached values at -10 nT. Solar wind speeds
began the highlight period at about 550 km/s, declined to near 325
km/s early on 20 Nov and gradually increased to about 500 km/s late
on 23 Nov.
Forecast of Solar and Geomagnetic Activity
24 November - 20 December 2025
Solar activity is expected to be expected to be at R1-R2
(Minor-Moderate) levels on 28-30 Nov and 01-11 Dec, primarily due to
the flare potential and return of old Region 4274. Mostly C-class
activity is expected on 24-27 Nov and 12-20 Dec.
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 28-30 Nov, 01-03 Dec, 08-12 Dec and
16-17 Dec, all due to coronal hole influence. The remainder of the
outlook period is likely to be at normal to moderate levels.
Geomagnetic field activity is expected to range from quiet to G1-G2
(Minor-Moderate) geomagnetic storm levels. G1-G2 (Minor-Moderate)
levels are likely on 26-27 Nov and 03-04 Dec due to anticipated
influence from CH HSS. Unsettled to active conditions are likely on
24-25 Nov, 28-30 Nov, 05-07 Dec, 12-14 Dec and 17-19 Dec. Mostly
quiet levels are likely on 01-02 Dec, 08-11 Dec, 15-16 Dec and 20
Dec.
73 de VA2OM, SYSOP of VE2PKT
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