Viewing archive of Tuesday, 26 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 26 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 177 Issued at 2200Z on 26 Jun 2001IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity was low. The largest event was a
long-duration, optically uncorrelated C7 x-ray flare. This flare
most likely originated from behind the southeast limb and was
probably associated with a large CME observed in the SOHO/LASCO
instrument. The remainder of the period was typified by small
C-class subflares and a general decay of the observable sunspot
regions. No new regions were numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be
predominantly low.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field was quiet with unsettled and active periods
observed at higher latitudes. The greater that 2 MeV electron flux
reached high levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to range from quiet to active over the next three days. A
high speed stream from a recurrent coronal hole should reach the
Earth late on the first day of the period and continue over days two
and three. The greater than 2 MeV electron flux is expected to
remain at high levels, at least through the first day of the period.
III. Event Probabilities 27 Jun to 29 Jun
| Class M | 30% | 30% | 40% |
| Class X | 01% | 01% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Jun 168 Predicted 27 Jun-29 Jun 160/160/155 90 Day Mean 26 Jun 171
V. Geomagnetic A Indices
Observed Afr/Ap 25 Jun 007/008 Estimated Afr/Ap 26 Jun 008/011 Predicted Afr/Ap 27 Jun-29 Jun 010/015-015/020-015/020
VI. Geomagnetic Activity Probabilities 27 Jun to 29 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 25% | 25% |
| Minor storm | 05% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 30% | 30% |
| Minor storm | 10% | 15% | 15% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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