Viewing archive of Sunday, 1 August 2010

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 2010 Aug 01 2201 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 213 Issued at 2200Z on 01 Aug 2010

IA. Analysis of Solar Active Regions and Activity from 31-2100Z to 01-2100Z

Solar activity increased to low levels. Region 1092 (N13E21) produced a long-duration C3/Sf flare at 01/0826Z. The flare was associated with a Type IV radio sweep, an 890 sfu Tenflare, and an Earth-directed full-halo coronal mass ejection (CME). A disappearing filament (DSF) occurred during 01/0750 - 0811Z, centered near N37W32 and time coincident with the C3 flare. The DSF was associated with an Earth-directed partial-halo CME. No new regions were assigned.
IB. Solar Activity Forecast
Solar activity is expected to be very low. However, there is a chance for an isolated C-class flare from Region 1092.
IIA. Geophysical Activity Summary 31-2100Z to 01-2100Z
Geomagnetic field activity was at quiet levels. The greater than 2 MeV electron flux at geosynchronous orbit was high throughout the period.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is expected to be at quiet levels during most of day 1 (02 August). An increase to unsettled to active levels is expected late on day 1 due to the arrival of the full-halo CME observed on 01 August. Activity is expected to increase to unsettled to active levels with a chance for minor storm levels on day 2 (03 August) as CME effects persist. Activity is expected to decrease to quiet to unsettled levels with a chance for active levels on day 3 (04 August) as CME effects subside.
III. Event Probabilities 02 Aug to 04 Aug
Class M05%05%05%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       01 Aug 080
  Predicted   02 Aug-04 Aug  080/080/082
  90 Day Mean        01 Aug 075
V. Geomagnetic A Indices
  Observed Afr/Ap 31 Jul  004/006
  Estimated     Afr/Ap 01 Aug  002/005
  Predicted    Afr/Ap 02 Aug-04 Aug  007/008-018/018-010/010
VI. Geomagnetic Activity Probabilities 02 Aug to 04 Aug
A. Middle Latitudes
Active20%40%30%
Minor storm05%20%10%
Major-severe storm01%10%05%
B. High Latitudes
Active25%45%35%
Minor storm10%25%15%
Major-severe storm01%15%10%

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