Viewing archive of Thursday, 20 June 2002
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 2002 Jun 20 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.comJoint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 171 Issued at 2200Z on 20 Jun 2002
IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z
Solar activity has been low. Only two low C-class
events were observed during the period. The largest region on the
visible disk is Region 8 (S09E52). This region is a DKO beta group
which has shown modest growth during the period with a white light
area of 480 millionths. A new region was numbered today as Region 9
(S19W66).
IB. Solar Activity Forecast
Solar activity is expected to be low.
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
The geomagnetic field was predominately quiet to unsettled with one
period of active conditions.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled.
III. Event Probabilities 21 Jun to 23 Jun
Class M | 25% | 25% | 25% |
Class X | 01% | 01% | 01% |
Proton | 01% | 01% | 01% |
PCAF | green
|
IV. Penticton 10.7 cm Flux
Observed 20 Jun 145
Predicted 21 Jun-23 Jun 150/155/155
90 Day Mean 20 Jun 177
V. Geomagnetic A Indices
Observed Afr/Ap 19 Jun 013/016
Estimated Afr/Ap 20 Jun 008/012
Predicted Afr/Ap 21 Jun-23 Jun 008/010-005/008-005/008
VI. Geomagnetic Activity Probabilities 21 Jun to 23 Jun
A. Middle Latitudes |
Active | 15% | 15% | 15% |
Minor storm | 05% | 05% | 05% |
Major-severe storm | 01% | 01% | 01% |
B. High Latitudes |
Active | 20% | 20% | 20% |
Minor storm | 10% | 05% | 05% |
Major-severe storm | 01% | 01% | 01% |
PLAIN
This message is for users of the NOAA/SEC Space
Weather Operations sunspot region numbers. As you
may have noticed, region number 10000 was assigned
on June 14. Space Weather operations is going
through the sequence of Region numbers as 9998,
9999, 0000, 0001, and so on. SEC's product text
discussions of the active regions will ignore the
leading zeroes (for example, we will say 'Region
number 5' rather than Region number '0005'). However,
the Geoalert product, the Region Report product, as
well as the USAF and IUWDS data exchange codes will
preserve the 4 digit format. The necessity of using
four digits is for operational purposes only. For
historical purposes all regions beyond Region 9999
will be understood to be in a series of region numbers
10000 and higher.
All times in UTC
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