Viewing archive of Tuesday, 30 January 2024
Solar activity report
Report of Solar-Geophysical Activity 2024 Jan 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 30 Issued at 2200Z on 30 Jan 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 C5 event observed at
30/1740Z from Region 3559 (N29W97). There are currently 4 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 (31 Jan, 01 Feb,
02 Feb).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 530 km/s at 30/0541Z. Total IMF reached 5
nT at 30/0009Z. The maximum southward component of Bz reached -5 nT at
30/0314Z. Protons greater than 10 MeV at geosynchronous orbit reached a
peak level of 41 pfu at 29/2100Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 200 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (31 Jan), quiet to unsettled
levels on day two (01 Feb) and quiet levels on day three (02 Feb).
Protons greater than 10 Mev have a slight chance of crossing threshold
on day one (31 Jan).
III. Event Probabilities 31 Jan to 02 Feb
| Class M | 25% | 25% | 25% |
| Class X | 01% | 01% | 01% |
| Proton | 20% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Jan 135 Predicted 31 Jan-02 Feb 135/140/140 90 Day Mean 30 Jan 157
V. Geomagnetic A Indices
Observed Afr/Ap 29 Jan 007/006 Estimated Afr/Ap 30 Jan 009/012 Predicted Afr/Ap 31 Jan-02 Feb 012/015-007/008-006/005
VI. Geomagnetic Activity Probabilities 31 Jan to 02 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 20% | 15% |
| Minor storm | 15% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 25% | 30% | 25% |
| Major-severe storm | 50% | 25% | 20% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/05/31 | X1.1 |
| Last M-flare | 2024/05/31 | M1.0 |
| Last geomagnetic storm | 2024/05/17 | Kp6 (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2024 | 136.5 +31.6 |
| Last 30 days | 147.7 +4.8 |