Viewing archive of Monday, 11 July 2005
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 2005 Jul 11 2200 UTC# Prepared jointly by the U.S. Dept. of Commerce, NOAA, #Space Environment Center and the U.S. Air Force. #
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 192 Issued at 2200Z on 11 Jul 2005IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z Solar activity was low. Region 786 (N09W57) produced a
C8 flare at 11/1508 UTC and has a Beta-Gamma-Delta magnetic
classification. Region 789 (N16W12) continued to decay and is now
an Eao Beta group.
IB. Solar Activity Forecast
Solar activity is expected to be low.
There is a chance for an M-class event from Region 786.
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic field ranged from unsettled to minor storm levels.
Sustained southward Bz following the shock arrival on 09 July
resulted in minor storming during the period 0600 - 0900 UTC. 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 at unsettled to active levels with a chance for
isolated minor storm conditions on 12 July due to the arrival of a
transient from the CME associated with the M2 flare on 09 July.
Predominantly unsettled conditions are expected on 13 and 14 July.
III. Event Probabilities 12 Jul to 14 Jul
| Class M | 40% | 40% | 40% |
| Class X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 11 Jul 093 Predicted 12 Jul-14 Jul 090/090/085 90 Day Mean 11 Jul 097
V. Geomagnetic A Indices
Observed Afr/Ap 10 Jul 028/047 Estimated Afr/Ap 11 Jul 022/025 Predicted Afr/Ap 12 Jul-14 Jul 025/025-010/012-005/007
VI. Geomagnetic Activity Probabilities 12 Jul to 14 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 20% | 10% |
| Minor storm | 20% | 10% | 05% |
| Major-severe storm | 10% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 40% | 25% | 15% |
| Minor storm | 25% | 15% | 10% |
| Major-severe storm | 15% | 10% | 05% |
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