Viewing archive of Monday, 5 February 2024
Solar activity report
Report of Solar-Geophysical Activity 2024 Feb 05 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 36 Issued at 2200Z on 05 Feb 2024IA. Analysis of Solar Active Regions and Activity from 04-2100Z to 05-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M2 event observed at
04/2237Z from Region 3576 (S16E72). There are currently 11 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate
with a chance for X-class flares on days one and two (06 Feb, 07 Feb)
and expected to be low with a chance for M-class flares and a slight
chance for an X-class flare on day three (08 Feb).
IIA. Geophysical Activity Summary 04-2100Z to 05-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 468 km/s at 05/1757Z. Total IMF reached 11
nT at 05/1611Z. The maximum southward component of Bz reached -9 nT at
05/1624Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 138 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (06 Feb) and quiet levels
on days two and three (07 Feb, 08 Feb). Protons have a slight chance of
crossing threshold on days one and two (06 Feb, 07 Feb) and have a
slight chance of crossing threshold on day three (08 Feb).
III. Event Probabilities 06 Feb to 08 Feb
| Class M | 60% | 60% | 45% |
| Class X | 25% | 25% | 10% |
| Proton | 15% | 15% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 05 Feb 173 Predicted 06 Feb-08 Feb 175/175/165 90 Day Mean 05 Feb 157
V. Geomagnetic A Indices
Observed Afr/Ap 04 Feb 005/004 Estimated Afr/Ap 05 Feb 009/011 Predicted Afr/Ap 06 Feb-08 Feb 010/010-006/005-006/005
VI. Geomagnetic Activity Probabilities 06 Feb to 08 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 20% | 20% |
| Major-severe storm | 25% | 20% | 20% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/10/31 | X2.03 |
| Last M-flare | 2024/11/05 | M4.1 |
| Last geomagnetic storm | 2024/10/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| September 2024 | 141.4 -74.1 |
| November 2024 | 215.8 +74.4 |
| Last 30 days | 161.1 +7.2 |