:Product: 20020623RSGA.txt :Issued: 2002 Jun 23 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 174 Issued at 2200Z on 23 Jun 2002 IA. Analysis of Solar Active Regions and Activity from 22/2100Z to 23/2100Z: Solar activity was at moderate levels. While being void of spots for the past several days, Region 9997 (S17W72) managed to produced an M1/2f flare at 23/0255 UTC. A few minor discrete radio bursts accompanied the flare. Region 5 (N13W13) produced a C1/1n flare at 23/0824 UTC and a B7/Sf flare at 23/1822 UTC. No appreciable changes seen in this region today. Region 8 (S09E13) remains the largest region on the disk but has continued to show quiescent characteristics. New Regions 12 (N19E20), 13 (N04E07), and 14 (S18E50) were assigned today. IB. Solar Activity Forecast: Solar activity is expected to be at low levels. IIA. Geophysical Activity Summary 22/2100Z to 23/2100Z: The geomagnetic field activity was at quiet to predominantly unsettled conditions. The Bz component of the IMF remained southward throughout most of the day. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels throughout the period. III. Event Probabilities 24 Jun-26 Jun Class M 25/25/25 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 23 Jun 143 Predicted 24 Jun-26 Jun 145/145/145 90 Day Mean 23 Jun 176 V. Geomagnetic A Indices Observed Afr/Ap 22 Jun 006/009 Estimated Afr/Ap 23 Jun 008/015 Predicted Afr/Ap 24 Jun-26 Jun 007/012-007/008-007/008 VI. Geomagnetic Activity Probabilities 24 Jun-26 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.