Viewing archive of Saturday, 29 January 2005

Solar activity report

Report of Solar-Geophysical Activity 2005 Jan 29 2200 UTC
Prepared by the NOAA © SWPC and processed by

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 029 Issued at 2200Z on 29 Jan 2005

IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z

Solar activity has been very low. No significant development was observed from active regions and no new regions were numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
The geomagnetic field was quiet to active. Solar wind speed measured at ACE increased to over 550 km/s as a coronal hole high speed solar wind stream moved into geoeffective position.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to active, with isolated periods of minor storming on 30 January from the residual effects of elevated solar wind. Activity should subside on 1-2 February to quiet to unsettled levels.
III. Event Probabilities 30 Jan to 01 Feb
Class M 05%05%05%
Class X 01%01%01%
IV. Penticton 10.7 cm Flux
  Observed       29 Jan 086
  Predicted    30 Jan-01 Feb  085/085/085
  90 Day Mean        29 Jan 108
V. Geomagnetic A Indices
  Observed Afr/Ap 28 Jan  005/006
  Estimated     Afr/Ap 29 Jan  018/020
  Predicted     Afr/Ap 30 Jan-01 Feb  016/020-014/020-010/020
VI. Geomagnetic Activity Probabilities 30 Jan to 01 Feb
A. Middle Latitudes
Minor storm 15%10%05%
Major-severe storm 10%05%05%
B. High Latitudes
Minor storm 25%20%20%
Major-severe storm 15%10%05%

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