Viewing archive of Saturday, 27 October 2007

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 2007 Oct 27 2104 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 300 Issued at 2200Z on 27 Oct 2007

IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z

Solar activity was very low. The visible solar disk remains spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
The geomagnetic field was quiet to active conditions. Real-time solar wind speeds have shown a decline from last reporting period at 670 km/s. Speeds are now averaging around 540 km/s with Bz continuing to range from +/- 4 nT. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to unsettled with isolated active conditions for 28-30 October.
III. Event Probabilities 28 Oct to 30 Oct
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       27 Oct 067
  Predicted   28 Oct-30 Oct  067/067/067
  90 Day Mean        27 Oct 068
V. Geomagnetic A Indices
  Observed Afr/Ap 26 Oct  010/014
  Estimated     Afr/Ap 27 Oct  010/012
  Predicted    Afr/Ap 28 Oct-30 Oct  008/010-010/015-008/010
VI. Geomagnetic Activity Probabilities 28 Oct to 30 Oct
A. Middle Latitudes
Active15%20%15%
Minor storm10%15%10%
Major-severe storm01%05%01%
B. High Latitudes
Active20%25%20%
Minor storm15%20%15%
Major-severe storm01%05%01%

All times in UTC

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