Viewing archive of Sunday, 3 February 2013
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 2013 Feb 03 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 34 Issued at 2200Z on 03 Feb 2013IA. Analysis of Solar Active Regions and Activity from 02-2100Z to 03-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C8 event observed at
03/0610Z from Region 1667 (N22E42). There are currently 5 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be at low
levels with a chance for M-class flares on days one, two, and three (04
Feb, 05 Feb, 06 Feb).
IIA. Geophysical Activity Summary 02-2100Z to 03-2100Z
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 491 km/s at
02/2104Z. Total IMF reached 7.5 nT at 03/1445Z. The maximum southward
component of Bz reached -2.6 nT at 03/1303Z. Electrons greater than 2
MeV at geosynchronous orbit reached a peak level of 388 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels for the next three days (04 Feb, 05
Feb, 06 Feb).
III. Event Probabilities 04 Feb to 06 Feb
| Class M | 25% | 25% | 25% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 03 Feb 111 Predicted 04 Feb-06 Feb 115/115/120 90 Day Mean 03 Feb 120
V. Geomagnetic A Indices
Observed Afr/Ap 02 Feb 009/009 Estimated Afr/Ap 03 Feb 005/005 Predicted Afr/Ap 04 Feb-06 Feb 009/012-007/008-006/005
VI. Geomagnetic Activity Probabilities 04 Feb to 06 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 10% | 10% |
| Minor storm | 10% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 20% | 15% |
| Major-severe storm | 35% | 15% | 10% |
All times in UTC
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| Last M-flare | 2024/12/23 | M8.9 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
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