Viewing archive of Tuesday, 11 November 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Nov 11 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 315 Issued at 2200Z on 11 Nov 2025IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z Solar activity has been at high levels for the past 24 hours.
There are currently 8 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be high on
days one, two, and three (12 Nov, 13 Nov, 14 Nov).
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 521 km/s at 10/2114Z. Total IMF reached 7
nT at 10/2243Z. The maximum southward component of Bz reached -4 nT at
10/2253Z. Protons greater than 10 MeV at geosynchronous orbit reached a
peak level of 157 pfu at 11/1505Z. Protons greater than 100 MeV at
geosynchronous orbit reached a peak level of 29 pfu at 11/1635Z.
Electrons greater than 2 MeV at geosynchronous orbit reached a peak
level of 10890 pfu, however data was suspect due to proton
contamination.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at active to severe storm levels on day one (12 Nov), unsettled to
severe storm levels on day two (13 Nov) and unsettled to minor storm
levels on day three (14 Nov). Protons are expected to cross threshold on
day one (12 Nov), are expected to cross threshold on day two (13 Nov)
and are likely to cross threshold on day three (14 Nov).
III. Event Probabilities 12 Nov to 14 Nov
| Class M | 85% | 85% | 85% |
| Class X | 55% | 55% | 55% |
| Proton | 99% | 75% | 55% |
| PCAF | red | ||
IV. Penticton 10.7 cm Flux
Observed 11 Nov 168 Predicted 12 Nov-14 Nov 170/170/165 90 Day Mean 11 Nov 152
V. Geomagnetic A Indices
Observed Afr/Ap 10 Nov 009/014 Estimated Afr/Ap 11 Nov 012/014 Predicted Afr/Ap 12 Nov-14 Nov 066/109-030/055-016/022
VI. Geomagnetic Activity Probabilities 12 Nov to 14 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 25% | 35% |
| Minor storm | 35% | 35% | 25% |
| Major-severe storm | 40% | 35% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 10% |
| Minor storm | 15% | 15% | 30% |
| Major-severe storm | 85% | 79% | 55% |
All times in UTC
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