Viewing archive of Saturday, 30 March 2024
Solar activity report
Report of Solar-Geophysical Activity 2024 Mar 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 90 Issued at 2200Z on 30 Mar 2024IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C8 event observed at
30/0212Z. There are currently 3 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate
with a slight chance for an X-class flare on day one (31 Mar) and
expected to be very low with a chance for a C-class flares on days two
and three (01 Apr, 02 Apr).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 432 km/s at 30/2043Z. Total IMF reached 13 nT at
30/2043Z. The maximum southward component of Bz reached -3 nT at
30/1848Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 391 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one, two, and three (31 Mar,
01 Apr, 02 Apr). Protons greater than 10 Mev have a slight chance of
crossing threshold on day one (31 Mar).
III. Event Probabilities 31 Mar to 02 Apr
| Class M | 65% | 01% | 01% |
| Class X | 15% | 01% | 01% |
| Proton | 10% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Mar 140 Predicted 31 Mar-02 Apr 135/125/120 90 Day Mean 30 Mar 164
V. Geomagnetic A Indices
Observed Afr/Ap 29 Mar 004/005 Estimated Afr/Ap 30 Mar 006/007 Predicted Afr/Ap 31 Mar-02 Apr 009/010-007/010-008/008
VI. Geomagnetic Activity Probabilities 31 Mar to 02 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 30% | 25% |
| Major-severe storm | 30% | 30% | 25% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/22 | M1.0 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2024 | 152.5 -13.9 |
| December 2024 | 103.3 -49.2 |
| Last 30 days | 115.4 -40.8 |