:Product: 20020617RSGA.txt :Issued: 2002 Jun 17 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 168 Issued at 2200Z on 17 Jun 2002 IA. Analysis of Solar Active Regions and Activity from 16/2100Z to 17/2100Z: Solar activity has been low. Only minor C-class events were observed during the period. IB. Solar Activity Forecast: Solar activity is expected to be low. IIA. Geophysical Activity Summary 16/2100Z to 17/2100Z: The geomagnetic field has been quiet to unsettled. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled. Unsettled to active conditions are possible on 19-20 June due to a well positioned coronal hole. III. Event Probabilities 18 Jun-20 Jun Class M 25/25/25 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 17 Jun 143 Predicted 18 Jun-20 Jun 145/145/150 90 Day Mean 17 Jun 178 V. Geomagnetic A Indices Observed Afr/Ap 16 Jun 007/011 Estimated Afr/Ap 17 Jun 005/009 Predicted Afr/Ap 18 Jun-20 Jun 005/008-010/010-015/015 VI. Geomagnetic Activity Probabilities 18 Jun-20 Jun A. Middle Latitudes Active 15/15/20 Minor storm 05/05/10 Major-severe storm 01/01/01 B. High Latitudes Active 20/20/25 Minor storm 05/10/10 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, we are steadily approaching region number 10000. The plan for Space Weather operations is to go 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.