Viewing archive of Wednesday, 22 February 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 Feb 22 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 053 Issued at 2200Z on 22 Feb 2012IA. Analysis of Solar Active Regions and Activity from 21-2100Z to 22-2100Z Solar activity was very low. There were two B-class
flares during the last 24 hours. The largest of these was a B5 at
1937Z from Region 1422 (N15W38). Region 1422 has shown steady decay
during the period.
IB. Solar Activity Forecast
Solar activity is expected to be very
low. There is a chance, however, for an isolated C-class flare.
IIA. Geophysical Activity Summary 21-2100Z to 22-2100Z
The geomagnetic field has been at quiet to unsettled levels. A weak
shock was observed at the ACE spacecraft at 22/0120Z and was
followed by a sudden impulse of 20 nT at 22/0223Z at the Boulder
magnetometer. Somewhat later in the day a solar sector boundary
crossing was observed (22/0815Z) and was followed by a marked
increase in solar wind velocity, indicative of the onset of a high
speed stream from a coronal hole.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled with a chance for isolated active
periods during the next 24 hours as effects from the high speed
stream persist. Predominantly quiet levels are expected for the
second and third days (24-25 February).
III. Event Probabilities 23 Feb to 25 Feb
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 22 Feb 104 Predicted 23 Feb-25 Feb 105/105/100 90 Day Mean 22 Feb 130
V. Geomagnetic A Indices
Observed Afr/Ap 21 Feb 004/006 Estimated Afr/Ap 22 Feb 008/009 Predicted Afr/Ap 23 Feb-25 Feb 007/008-007/005-007/005
VI. Geomagnetic Activity Probabilities 23 Feb to 25 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 05% | 01% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 35% | 15% | 10% |
| Major-severe storm | 25% | 05% | 05% |
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
Unspecified geomagnetic activity 1749Strong far side CME 327Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 9Filaments and prominences 595Incoming & Unnumbered Active Regions 1351
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 |