Viewing archive of Saturday, 30 June 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 Jun 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 182 Issued at 2200Z on 30 Jun 2012IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity was moderate. Region 1513 (N17E17)
produced two impulsive M1 flares at 30/1252Z and 30/1832Z. Region
1514 (S15E15) produced several C-class events during the period.
Region 1515 (S16E30) continued to grow and is now an Ekc-type region
with a beta-gamma magnetic configuration and an area of 380
millionths.
IB. Solar Activity Forecast
Solar activity is expected to be low
with a chance for M-class flares for the next three days (01-03
July).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic field was active during the past 24 hours due to
effects from the co-rotating interaction region (CIR) that arrived
in advance of a recurrent coronal hole high speed stream (CH HSS).
Increased solar wind speeds, temperature and density were observed
at the ACE spacecraft around 30/0200Z along with an increase in
total field strength to approximately 10 nT. Density began to
decrease at approximately 30/1600Z while solar wind speeds continued
to increase (reaching 700 km/s at the time of this report)
indicating the transition from the CIR to the CH HSS.
IIB. Geophysical Activity Forecast
Solar activity is expected to
be unsettled to active during the next three days (01-03 July) with
a chance for isolated minor storm periods due to effects from the
favorably positioned CH HSS.
III. Event Probabilities 01 Jul to 03 Jul
| Class M | 40% | 40% | 40% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Jun 124 Predicted 01 Jul-03 Jul 125/125/130 90 Day Mean 30 Jun 119
V. Geomagnetic A Indices
Observed Afr/Ap 29 Jun 006/005 Estimated Afr/Ap 30 Jun 014/021 Predicted Afr/Ap 01 Jul-03 Jul 015/018-013/015-013/015
VI. Geomagnetic Activity Probabilities 01 Jul to 03 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 30% | 30% |
| Major-severe storm | 40% | 35% | 35% |
All times in UTC
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