Viewing archive of Friday, 14 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 14 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.comJoint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 073 Issued at 2200Z on 14 Mar 2003
IA. Analysis of Solar Active Regions and Activity from 13-2100Z to 14-2100Z
Solar activity was at very low levels. The largest
event was a B9.2 X-ray enhancement at 14/1825 UTC. The most likely
source of this enhancement was a disappearing solar filament that
lifted off near S25W55. The western most 30 degrees of the large
filament lifted off at 14/1730 UTC and was associated with a CME, as
seen in LASCO imagery. There is not enough data at the time of this
report to determine if the CME will be geo-effective. Two other
DSFs occurred during the past twenty-four hours. A 10 degree
filament lifted off near S16W27 at 13/2030 UTC and a 13 degree
filament lifted off near N40E45 at 13/2200 UTC. The 13 degree DSF
was associated with a CME off the northeast limb but does not appear
to be Earth directed. New Region 314 (S14E00) rapidly appeared on
the visible disk and grew to 80 millionths. Magnetic complexity of
Region 314 also rapidly increased to a beta-gamma configuration.
IB. Solar Activity Forecast
Solar activity is expected to be at
low levels. Regions 306 (N07W19) and 314 have C-class potential and
a slight chance for M-class events.
IIA. Geophysical Activity Summary 13-2100Z to 14-2100Z
The geomagnetic field was at quiet to active levels. Early in the
period solar wind velocity increased to over 600 km/s marking the
onset of the expected high speed stream. Fluctuations in the Bz
component of the interplanetary magnetic field to -8 nT resulted in
isolated active conditions.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to active levels with isolated minor storm
levels possible. High speed stream effects are expected to continue
through the forecast period.
III. Event Probabilities 15 Mar to 17 Mar
Class M | 15% | 15% | 15% |
Class X | 01% | 01% | 01% |
Proton | 01% | 01% | 01% |
PCAF | green
|
IV. Penticton 10.7 cm Flux
Observed 14 Mar 139
Predicted 15 Mar-17 Mar 140/145/145
90 Day Mean 14 Mar 141
V. Geomagnetic A Indices
Observed Afr/Ap 13 Mar 008/015
Estimated Afr/Ap 14 Mar 015/020
Predicted Afr/Ap 15 Mar-17 Mar 015/015-012/015-015/020
VI. Geomagnetic Activity Probabilities 15 Mar to 17 Mar
A. Middle Latitudes |
Active | 35% | 35% | 25% |
Minor storm | 10% | 10% | 05% |
Major-severe storm | 05% | 01% | 01% |
B. High Latitudes |
Active | 40% | 35% | 35% |
Minor storm | 20% | 20% | 15% |
Major-severe storm | 05% | 05% | 05% |
All times in UTC
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