Viewing archive of Wednesday, 2 June 2004
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 2004 Jun 02 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 154 Issued at 2200Z on 02 Jun 2004IA. Analysis of Solar Active Regions and Activity from 01-2100Z to 02-2100Z Solar activity continues at very low levels. Region 621
(S14E12) contains a mildly complex beta-gamma magnetic
configuration; however, activity was limited to occasional low
B-class flares. A CME was observed to erupt from near the northwest
limb late in the period. Preliminary data indicate no Earth directed
component. The remaining active regions showed no significant
change.
IB. Solar Activity Forecast
Solar activity is expected to continue
at very low levels. There is a chance for an isolated C-class flare
from Region 621.
IIA. Geophysical Activity Summary 01-2100Z to 02-2100Z
The geomagnetic field was quiet to active. Solar wind speed remains
elevated due to a large transequatorial coronal hole that has
rotated into a geoeffective position. The greater than 2 MeV
electron flux at geosynchronous orbit reached high levels today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to continue at quiet to active levels with isolated minor
storm periods at high latitudes. The elevated solar wind speed is
expected to subside by 04 June. Expect quiet to unsettled levels by
05 June.
III. Event Probabilities 03 Jun to 05 Jun
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 02 Jun 090 Predicted 03 Jun-05 Jun 090/095/095 90 Day Mean 02 Jun 104
V. Geomagnetic A Indices
Observed Afr/Ap 01 Jun 014/016 Estimated Afr/Ap 02 Jun 015/015 Predicted Afr/Ap 03 Jun-05 Jun 015/018-008/015-005/010
VI. Geomagnetic Activity Probabilities 03 Jun to 05 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 30% | 25% |
| Minor storm | 15% | 10% | 05% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 40% | 35% | 30% |
| Minor storm | 20% | 15% | 10% |
| Major-severe storm | 10% | 05% | 05% |
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