Viewing archive of Saturday, 9 June 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 Jun 09 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 160 Issued at 2200Z on 09 Jun 2001IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z Solar activity was at low levels. Overall, solar
activity has increased since the previous period, as several regions
produced C-class events and optical sub-flares. The largest event
was an optically uncorrelated C7 at 08/2324 UTC. Region 9494
(S08W44) has shown rapid growth over the last 24 hours and is
currently a 21 spot Dao group with a beta-gamma magnetic
classification. There are currently eleven spot groups on the disk.
Region 9496 (N09W36) was numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be
mostly low. Region 9496 is capable of producing isolated M-class
events.
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
The geomagnetic field was at quiet to mostly unsettled conditions
with isolated active period occurring at 09/0600-0900 and 1800-2100
UTC. The increased geomagnetic activity appears to be the result of
interaction with a high-speed coronal hole stream.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled. Isolated active periods are
possible on the first day of the period due to a coronal hole
stream.
III. Event Probabilities 10 Jun to 12 Jun
| Class M | 30% | 30% | 30% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 09 Jun 177 Predicted 10 Jun-12 Jun 180/185/185 90 Day Mean 09 Jun 169
V. Geomagnetic A Indices
Observed Afr/Ap 08 Jun 007/008 Estimated Afr/Ap 09 Jun 012/014 Predicted Afr/Ap 10 Jun-12 Jun 010/010-008/008-008/008
VI. Geomagnetic Activity Probabilities 10 Jun to 12 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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