Viewing archive of Friday, 21 March 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 Mar 21 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 080 Issued at 2200Z on 21 Mar 2003IA. Analysis of Solar Active Regions and Activity from 20-2100Z to 21-2100Z Solar activity has been low. Two C class flares were
produced by Region 314 (S13W94) as it crossed the west limb. A 13
degree filament near N12E59 disappeared at about 0930 UTC, followed
by a narrow CME on the northeast limb. Another filament erupted
near S24E12 at 0948 UTC. Solar X-ray images indicate a new solar
active region near S14 behind the east limb.
IB. Solar Activity Forecast
Solar activity is expected to be low
to very low.
IIA. Geophysical Activity Summary 20-2100Z to 21-2100Z
Geomagnetic activity has ranged from quiet to minor storm levels.
High speed solar wind and strong interplanetary magnetic field
conditions led to minor storm activity from 0000 to 1200 UTC.
Activity decreased to active levels from 1200 to 1500 UTC, and
unsettled thereafter. Greater than 2 MeV electron flux levels were
high during the past 24 hours.
IIB. Geophysical Activity Forecast
Geomagnetic activity is
expected to be unsettled with isolated active periods during the
next 24 hours due to persistence. Conditions should decline to
mostly unsettled during the second and third days.
III. Event Probabilities 22 Mar to 24 Mar
| Class M | 10% | 05% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 21 Mar 091 Predicted 22 Mar-24 Mar 095/095/100 90 Day Mean 21 Mar 134
V. Geomagnetic A Indices
Observed Afr/Ap 20 Mar 012/021 Estimated Afr/Ap 21 Mar 028/025 Predicted Afr/Ap 22 Mar-24 Mar 015/015-012/010-010/012
VI. Geomagnetic Activity Probabilities 22 Mar to 24 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 20% | 15% |
| Minor storm | 10% | 10% | 05% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 30% | 25% |
| Minor storm | 15% | 10% | 08% |
| Major-severe storm | 10% | 05% | 05% |
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