Viewing archive of Friday, 12 June 2015
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 2015 Jun 12 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 163 Issued at 2200Z on 12 Jun 2015IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C4 event observed at
12/0206Z from Region 2360 (N15W68). There are currently 5 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 and two (13 Jun, 14 Jun) and
expected to be low with a slight chance for an M-class flare on day
three (15 Jun).
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 557 km/s at
11/2131Z. Total IMF reached 10 nT at 12/2047Z. The maximum southward
component of Bz reached -4 nT at 12/1451Z. Electrons greater than 2 MeV
at geosynchronous orbit reached a peak level of 8585 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (13 Jun), unsettled to active
levels on day two (14 Jun) and quiet to unsettled levels on day three
(15 Jun).
III. Event Probabilities 13 Jun to 15 Jun
| Class M | 30% | 30% | 20% |
| Class X | 05% | 05% | 01% |
| Proton | 05% | 05% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 12 Jun 137 Predicted 13 Jun-15 Jun 140/135/130 90 Day Mean 12 Jun 125
V. Geomagnetic A Indices
Observed Afr/Ap 11 Jun 009/011 Estimated Afr/Ap 12 Jun 009/011 Predicted Afr/Ap 13 Jun-15 Jun 012/015-013/016-007/010
VI. Geomagnetic Activity Probabilities 13 Jun to 15 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 40% | 25% |
| Minor storm | 10% | 15% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 15% |
| Minor storm | 30% | 30% | 30% |
| Major-severe storm | 45% | 55% | 30% |
All times in UTC
Latest news
Monday, 11 November 2024
Coronal hole faces Earth
Friday, 1 November 2024
X2.0 solar flare
Wednesday, 9 October 2024
X1.8 solar flare, severe geomagnetic storm watch
Latest forum messages
Unspecified geomagnetic activity 1643Space Weather Memes 571sun goes blank 75AR13883 2024/11/04 CME 45Incoming & Unnumbered Active Regions 1209
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 | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/13 | M1.7 |
| 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 | 166 -0.4 |
| Last 30 days | 163.2 +18.4 |