Viewing archive of Saturday, 26 February 2005
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 2005 Feb 26 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 057 Issued at 2200Z on 26 Feb 2005IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity has been very low. Region 739 (S04E52)
was newly numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field has been at quiet to unsettled levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to active with isolated minor storm levels
occurring through 28 Feb. A high-speed solar wind stream associated
with a coronal hole should become geoeffective from 27 through 28
Feb. Quiet to unsettled levels are expected for 01 Mar.
III. Event Probabilities 27 Feb to 01 Mar
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Feb 077 Predicted 27 Feb-01 Mar 080/080/080 90 Day Mean 26 Feb 098
V. Geomagnetic A Indices
Observed Afr/Ap 25 Feb 009/009 Estimated Afr/Ap 26 Feb 012/015 Predicted Afr/Ap 27 Feb-01 Mar 015/020-012/020-008/012
VI. Geomagnetic Activity Probabilities 27 Feb to 01 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 15% | 15% | 10% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 10% | 10% | 05% |
All times in UTC
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