Viewing archive of Friday, 13 October 2023
Solar activity report
Report of Solar-Geophysical Activity 2023 Oct 13 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 286 Issued at 2200Z on 13 Oct 2023IA. Analysis of Solar Active Regions and Activity from 12-2100Z to 13-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C1 event observed at
13/1609Z. There are currently 6 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares on days one, two, and three (14 Oct, 15 Oct,
16 Oct).
IIA. Geophysical Activity Summary 12-2100Z to 13-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 510 km/s at 13/1710Z. Total IMF reached 24
nT at 13/0829Z. The maximum southward component of Bz reached -11 nT at
13/1442Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 189 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (14 Oct, 15 Oct)
and quiet levels on day three (16 Oct).
III. Event Probabilities 14 Oct to 16 Oct
| Class M | 25% | 25% | 25% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 13 Oct 149 Predicted 14 Oct-16 Oct 150/150/145 90 Day Mean 13 Oct 159
V. Geomagnetic A Indices
Observed Afr/Ap 12 Oct 003/002 Estimated Afr/Ap 13 Oct 011/011 Predicted Afr/Ap 14 Oct-16 Oct 008/010-008/008-005/005
VI. Geomagnetic Activity Probabilities 14 Oct to 16 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 20% | 10% |
| Minor storm | 10% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 25% | 20% |
| Major-severe storm | 40% | 30% | 15% |
All times in UTC
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