Viewing archive of Monday, 30 July 2001
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 2001 Jul 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 211 Issued at 2200Z on 30 Jul 2001IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity was at low levels due to two C-class
events during the period. A C4 x-ray flare occurred at 30/0834 UTC.
Although optically uncorrelated, EIT imagery shows that the probable
flare location was newly numbered Region 9562 (N05E70). Region 9561
(S13E63) was also numbered today. An optically uncorrelated C6 flare
occurred at the end of the period, at 30/2043 UTC. A Type II radio
sweep (with a velocity of 700 km/s) was associated with this flare.
Overall, the disk and limbs were mostly quiet and stable.
IB. Solar Activity Forecast
Solar activity is expected to remain
at very low to low levels.
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic field was at quiet to unsettled conditions.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to unsettled conditions.
III. Event Probabilities 31 Jul to 02 Aug
| Class M | 15% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Jul 115 Predicted 31 Jul-02 Aug 120/120/120 90 Day Mean 30 Jul 151
V. Geomagnetic A Indices
Observed Afr/Ap 29 Jul 005/008 Estimated Afr/Ap 30 Jul 006/007 Predicted Afr/Ap 31 Jul-02 Aug 008/008-008/008-010/010
VI. Geomagnetic Activity Probabilities 31 Jul to 02 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 01% | 01% | 01% |
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