Viewing archive of Thursday, 9 March 2023
Solar activity report
Report of Solar-Geophysical Activity 2023 Mar 09 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 68 Issued at 2200Z on 09 Mar 2023IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M1 event observed at
08/2244Z from Region 3245 (S23E07). There are currently 11 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares and a slight chance for an X-class flare on
days one, two, and three (10 Mar, 11 Mar, 12 Mar).
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 467 km/s at 09/1718Z. Total IMF reached 8
nT at 09/0734Z. The maximum southward component of Bz reached -8 nT at
09/0614Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 3480 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one, two, and three (10 Mar,
11 Mar, 12 Mar).
III. Event Probabilities 10 Mar to 12 Mar
| Class M | 30% | 30% | 30% |
| Class X | 10% | 10% | 10% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 09 Mar 179 Predicted 10 Mar-12 Mar 178/175/170 90 Day Mean 09 Mar 172
V. Geomagnetic A Indices
Observed Afr/Ap 08 Mar 006/008 Estimated Afr/Ap 09 Mar 013/016 Predicted Afr/Ap 10 Mar-12 Mar 008/008-008/008-009/010
VI. Geomagnetic Activity Probabilities 10 Mar to 12 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 25% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 25% | 30% |
| Major-severe storm | 25% | 25% | 30% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/11/06 | X2.3 |
| Last M-flare | 2024/11/08 | M1.4 |
| Last geomagnetic storm | 2024/10/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
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| October 2024 | 166.4 +25 |
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| Last 30 days | 160.2 +7.9 |