Viewing archive of Tuesday, 4 June 2024
Solar activity report
Report of Solar-Geophysical Activity 2024 Jun 04 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 156 Issued at 2200Z on 04 Jun 2024IA. Analysis of Solar Active Regions and Activity from 03-2100Z to 04-2100Z 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
04/0631Z from Region 3697 (S18W20). There are currently 12 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 (05 Jun, 06 Jun)
and likely to be moderate with a slight chance for an X-class flare on
day three (07 Jun).
IIA. Geophysical Activity Summary 03-2100Z to 04-2100Z
The geomagnetic
field has been at quiet to minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 516 km/s at 04/0012Z. Total IMF
reached 18 nT at 03/2148Z. The maximum southward component of Bz reached
-10 nT at 04/0010Z. Electrons greater than 2 MeV at geosynchronous
orbit reached a peak level of 115 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (05 Jun) and quiet levels on
days two and three (06 Jun, 07 Jun). Protons have a slight chance of
crossing threshold on day one (05 Jun) and have a chance of crossing
threshold on days two and three (06 Jun, 07 Jun).
III. Event Probabilities 05 Jun to 07 Jun
| Class M | 60% | 60% | 60% |
| Class X | 25% | 25% | 20% |
| Proton | 20% | 25% | 25% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 04 Jun 192 Predicted 05 Jun-07 Jun 190/185/180 90 Day Mean 04 Jun 171
V. Geomagnetic A Indices
Observed Afr/Ap 03 Jun 013/009 Estimated Afr/Ap 04 Jun 011/014 Predicted Afr/Ap 05 Jun-07 Jun 012/014-005/005-005/005
VI. Geomagnetic Activity Probabilities 05 Jun to 07 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 10% | 10% |
| Minor storm | 10% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 20% | 20% |
| Major-severe storm | 45% | 20% | 20% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/20 | M1.1 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 142.7 -23.8 |
| Last 30 days | 155.2 +4.4 |