Viewing archive of Tuesday, 20 March 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 Mar 20 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 080 Issued at 2200Z on 20 Mar 2012IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z Solar activity was low. There was just one C-class
x-ray event during the period, a C3 from Region 1434 (S20W66) at
19/2204Z. The solar disk consists of six spotted regions, all of
which were relatively quiet and stable. Two new regions were
assigned today: Region 1438 (S15E69) and Region 1439 (N25W79).
IB. Solar Activity Forecast
Solar activity is expected to be very
low. There is, however, a chance for an isolated C-class flare.
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
The geomagnetic field was quiet. 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 mostly quiet with a chance for some isolated
unsettled periods for the next three days (20-22 March).
III. Event Probabilities 21 Mar to 23 Mar
| Class M | 05% | 05% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 20 Mar 100 Predicted 21 Mar-23 Mar 095/090/085 90 Day Mean 20 Mar 123
V. Geomagnetic A Indices
Observed Afr/Ap 19 Mar 008/009 Estimated Afr/Ap 20 Mar 004/004 Predicted Afr/Ap 21 Mar-23 Mar 006/007-007/007-006/005
VI. Geomagnetic Activity Probabilities 21 Mar to 23 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 20% | 15% |
| Major-severe storm | 05% | 10% | 05% |
Latest news
Monday, 22 April 2024
Lot's of sunspots! Big chance for major flare activity?
Saturday, 23 March 2024
X1.1 solar flare with earth-directed CME
Wednesday, 20 March 2024
Sunspot region 3615, G1 watch
Latest forum messages
Incoming Active Regions 232Filaments and prominences 56Unproven theories 355AR3654 33Growth of Cycle 25 435
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 | 2024/04/29 | M3.6 |
| Last geomagnetic storm | 2024/04/26 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2024 | 104.9 -19.8 |
| Last 30 days | 141.7 +36.9 |