Viewing archive of Friday, 12 October 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 Oct 12 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 286 Issued at 2200Z on 12 Oct 2012IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z Solar activity was low. Region 1589 (N13E35) was
responsible for several low level C-flares and a C9/1f flare at
12/0820Z. Region 1589 continues to maintain its Beta-Gamma magnetic
classification. New region 1591 (N07E71) rotated onto the disk as a
bipolar D-type group.
IB. Solar Activity Forecast
Solar activity is expected to be low
with a chance for M-class flares and a slight chance for an X-flare
during the forecast period (13-15 October).
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
The geomagnetic field was quiet to active. Solar wind speed,
measured at the ACE spacecraft, ranged between approximately 450 and
550 km/s. Prolonged periods of southward Bz (near -5 nT) coupled
with enhanced wind speed resulted in an isolated active period
between 12/0300 - 0600Z. The greater than 2 MeV electron flux at
geosynchronous orbit was at high levels throughout the period.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled on day 1 (13 October). A coronal
hole high speed stream is expected to become geoeffective on days
2-3 (14-15 October) resulting in quiet to unsettled conditions with
a chance for active periods. On day 3, a slight chance exists for a
greater than 10 MeV proton event at geosynchronous orbit as Region
1589 rotates into a more geoeffective position.
III. Event Probabilities 13 Oct to 15 Oct
| Class M | 35% | 35% | 35% |
| Class X | 10% | 10% | 10% |
| Proton | 01% | 05% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 12 Oct 122 Predicted 13 Oct-15 Oct 125/130/130 90 Day Mean 12 Oct 118
V. Geomagnetic A Indices
Observed Afr/Ap 11 Oct 005/006 Estimated Afr/Ap 12 Oct 012/012 Predicted Afr/Ap 13 Oct-15 Oct 007/008-010/012-011/012
VI. Geomagnetic Activity Probabilities 13 Oct to 15 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 30% | 30% |
| Minor storm | 05% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 30% | 30% |
| Major-severe storm | 20% | 40% | 40% |
All times in UTC
Latest news
Sunday, 8 December 2024
X2.2 solar flare, SDO outage
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Monday, 11 November 2024
Coronal hole faces Earth
Latest forum messages
Strong far side CME 332Unspecified geomagnetic activity 1750Incoming & Unnumbered Active Regions 1352Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 9Filaments and prominences 595
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 | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/22 | M1.0 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2024 | 152.5 -13.9 |
| December 2024 | 103.3 -49.2 |
| Last 30 days | 115.4 -40.8 |