Viewing archive of Tuesday, 27 April 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 Apr 27 2201 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 117 Issued at 2200Z on 27 Apr 2010

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

Solar activity was very low. No flares were observed during the past 24 hours.
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.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet with isolated periods of unsettled conditions for days one and two (28-29 April) due to possible effects from a coronal hole high speed stream. Predominantly quiet levels are expected for day three (30 April).
III. Event Probabilities 28 Apr to 30 Apr
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       27 Apr 075
  Predicted   28 Apr-30 Apr  076/076/076
  90 Day Mean        27 Apr 081
V. Geomagnetic A Indices
  Observed Afr/Ap 26 Apr  000/002
  Estimated     Afr/Ap 27 Apr  003/003
  Predicted    Afr/Ap 28 Apr-30 Apr  007/007-007/007-005/005
VI. Geomagnetic Activity Probabilities 28 Apr to 30 Apr
A. Middle Latitudes
Active10%10%05%
Minor storm05%05%01%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%05%
Minor storm05%05%01%
Major-severe storm01%01%01%

All times in UTC

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