Viewing archive of Saturday, 3 May 2008
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 2008 May 03 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 124 Issued at 2200Z on 03 May 2008IA. Analysis of Solar Active Regions and Activity from 02-2100Z to 03-2100Z Solar activity was at very low levels.
IB. Solar Activity Forecast
Solar activity is expected to remain
at very low levels.
IIA. Geophysical Activity Summary 02-2100Z to 03-2100Z
The geomagnetic field was at quiet to unsettled levels. Wind speed
measured at the ACE spacecraft reached a maximum of 580 km/s at
03/2022Z and Bz ranged between +/- 7. ACE signatures indicated that
Earth had entered a coronal hole high speed stream at approximately
03/1200Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to unsettled levels. There is a slight
chance for isolated active levels at middle latitudes and minor
storm conditions at high latitudes due to a high speed stream
throughout the forecast period (04 - 06 May).
III. Event Probabilities 04 May to 06 May
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 03 May 067 Predicted 04 May-06 May 068/068/068 90 Day Mean 03 May 071
V. Geomagnetic A Indices
Observed Afr/Ap 02 May 007/012 Estimated Afr/Ap 03 May 008/015 Predicted Afr/Ap 04 May-06 May 008/012-005/008-008/010
VI. Geomagnetic Activity Probabilities 04 May to 06 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 15% | 20% |
| Minor storm | 20% | 05% | 15% |
| Major-severe storm | 10% | 01% | 05% |
All times in UTC
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