Viewing archive of Monday, 4 June 2012
Solar activity report
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Report of Solar-Geophysical Activity 2012 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 2012IA. Analysis of Solar Active Regions and Activity from 03-2100Z to 04-2100Z Solar activity was low during the past 24 hours. Region
1496 (N17E17) produced a C1/Sf at 04/0936Z. New Regions 1500
(N09W34), 1501 (N07E15) and 1502 (S17E41) were numbered today. No
Earth-directed CMEs were observed during the period.
IB. Solar Activity Forecast
Solar activity is expected to be low
with a slight chance for M-class events for the next three days
(05-07 June).
IIA. Geophysical Activity Summary 03-2100Z to 04-2100Z
The geomagnetic field was unsettled to active during the past 24
hours due to effects from a favorably positioned coronal hole high
speed stream (CH HSS). Solar wind speeds remained steady around 600
km/s and the interplanetary magnetic field (IMF) Bt was stable at
approximately 8 nT. The Bz component of the IMF reached a maximum
deviation of -12 nT between 04/0800 - 1000Z, but varied between -5
to +2 nT for the majority of the period.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be unsettled to active, with a chance for isolated minor
storm periods on day one (05 June), due to continued effects from
the CH HSS. Days two and three (06-07 June) are expected to be
unsettled, with a chance for isolated active periods, as the effects
from the CH HSS begin to subside.
III. Event Probabilities 05 Jun to 07 Jun
| Class M | 20% | 20% | 20% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 04 Jun 128 Predicted 05 Jun-07 Jun 130/135/135 90 Day Mean 04 Jun 117
V. Geomagnetic A Indices
Observed Afr/Ap 03 Jun 016/026 Estimated Afr/Ap 04 Jun 015/019 Predicted Afr/Ap 05 Jun-07 Jun 014/022-014/018-011/015
VI. Geomagnetic Activity Probabilities 05 Jun to 07 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 40% | 40% | 30% |
| Minor storm | 20% | 20% | 10% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 15% |
| Minor storm | 25% | 30% | 25% |
| Major-severe storm | 60% | 55% | 40% |
Latest news
Saturday, 23 March 2024
X1.1 solar flare with earth-directed CME
Wednesday, 20 March 2024
Sunspot region 3615, G1 watch
Thursday, 22 February 2024
X6.3 solar flare
Latest forum messages
Growth of Cycle 25 418Unspecified geomagnetic activity 904GONG Farside Images added to the SWL site? 3Changelog/Featurelog 152Imagery from Total Solar Eclipse 08/04/2024 5
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Space weather facts
| Last X-flare | 2024/03/28 | X1.1 |
| Last M-flare | 2024/04/19 | M1.0 |
| Last geomagnetic storm | 2024/04/16 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2024 | 104.9 -19.8 |