Viewing archive of Thursday, 1 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 01 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 091 Issued at 2200Z on 01 Apr 2010IA. Analysis of Solar Active Regions and Activity from 31-2100Z to 01-2100Z Solar activity has been very low. Region 1057 (N15W45)
continues a slow decay. Region 1059 (S22E10) remains stable. An
eleven degree filament disappeared near N26W31, between
01/0030-1355Z. 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 31-2100Z to 01-2100Z
The geomagnetic field has been at quiet to active conditions. The
ACE spacecraft indicated the signature of a weak coronal hole high
speed stream. Solar wind speed averaged approximately 410 km/s with
IMF Bz ranging between -7/+8 nT.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be predominately quiet for the next three days (02-05
April).
III. Event Probabilities 02 Apr to 04 Apr
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 01 Apr 079 Predicted 02 Apr-04 Apr 079/075/075 90 Day Mean 01 Apr 083
V. Geomagnetic A Indices
Observed Afr/Ap 31 Mar 005/004 Estimated Afr/Ap 01 Apr 008/012 Predicted Afr/Ap 02 Apr-04 Apr 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 02 Apr to 04 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 01% | 01% | 01% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 01% | 01% | 01% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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