Viewing archive of Wednesday, 11 June 2003
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 2003 Jun 11 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 162 Issued at 2200Z on 11 Jun 2003IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z Solar activity has been high. Region 375 (N10W62)
produced major flare activity including an X1.3/2b at 11/0002 UTC
and an X1.6/1n at 11/2015 UTC. Region 375 maintained its size and
magnetic complexity. Region 380 produced an M1.8/1f at 11/1743 UTC.
At 11/1730 UTC a filament near S37E12 erupted and was observed on
SOHO/EIT and Mauna Loa H-alpha. Background X-ray flux remained at
M levels for 6 hours during the period beginning at about 1300 UTC.
New Region 383 (N19E22) was numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be
moderate to high. Regions 375 and 380 remain capable of producing
major flare activity.
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic field has been at unsettled to active levels, due to
continued effects from a coronal hole high speed stream. The
greater than 2 MeV electron flux at geosynchronous orbit reached
high levels today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be unsettled to active through day one, with isolated
periods of minor storm conditions possible due to CME arrival from
yesterday's flare activity. Unsettled conditions are expected on
days two and three as the coronal hole wind stream moves out of
geoeffective position. Active conditions are possible on day three
due to potential effects of CMEs related to the major flares and
erupting filament observed today.
III. Event Probabilities 12 Jun to 14 Jun
| Class M | 95% | 95% | 75% |
| Class X | 40% | 40% | 30% |
| Proton | 30% | 30% | 30% |
| PCAF | yellow | ||
IV. Penticton 10.7 cm Flux
Observed 11 Jun 193 Predicted 12 Jun-14 Jun 160/150/145 90 Day Mean 11 Jun 124
V. Geomagnetic A Indices
Observed Afr/Ap 10 Jun 019/027 Estimated Afr/Ap 11 Jun 020/017 Predicted Afr/Ap 12 Jun-14 Jun 010/015-010/012-015/020
VI. Geomagnetic Activity Probabilities 12 Jun to 14 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 20% | 20% |
| Minor storm | 15% | 10% | 10% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 20% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
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