:Product: 20020624RSGA.txt :Issued: 2002 Jun 24 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 175 Issued at 2200Z on 24 Jun 2002 IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: Solar activity was low during the past 24 hours. Today's only C-flare was a C1 at 1606 UTC. The optical source was not obvious, but there were some slightly enhanced loops visible in EIT 195 from Region 5 (N14W29). New Region 15 (S27E39) emerged and was assigned today. A 13 degree filament near N40W06 disappeared sometime between 0112 UTC and 1345 UTC. A CME erupted from the west limb at 24/0054 UTC but did not have any earthward component. Region 8 (S10W01) continues to be the largest region on the disk and appeared to be growing and developing some magnetic complexity during the past 24 hours. IB. Solar Activity Forecast: Solar activity is expected to be low for the next three days. There is a very slight chance for moderate activity from Region 8. IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field was quiet to unsettled. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled for the next three days. III. Event Probabilities 25 Jun-27 Jun Class M 25/25/25 Class X 05/05/05 Proton 05/05/05 PCAF green IV. Penticton 10.7 cm Flux Observed 24 Jun 150 Predicted 25 Jun-27 Jun 150/150/145 90 Day Mean 24 Jun 175 V. Geomagnetic A Indices Observed Afr/Ap 23 Jun 012/014 Estimated Afr/Ap 24 Jun 006/012 Predicted Afr/Ap 25 Jun-27 Jun 007/008-007/008-007/008 VI. Geomagnetic Activity Probabilities 25 Jun-27 Jun A. Middle Latitudes Active 20/20/20 Minor storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 25/25/25 Minor storm 05/05/05 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 ISES 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.