:Product: 20020613RSGA.txt :Issued: 2002 Jun 13 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 164 Issued at 2200Z on 13 Jun 2002 IA. Analysis of Solar Active Regions and Activity from 12/2100Z to 13/2100Z: Solar activity was at low levels. Region 9991 (S20W09) produced a C1.5/Sf flare at 12/2119 UTC with associated discrete frequency radio bursts. Region 9987 (S15W71) continues its gradual decay and has simplified to a beta magnetic configuration. The only other significant disk activity was a five degree disappearing filament at S14E18. IB. Solar Activity Forecast: Solar activity is expected to be at low levels. Region 9987 and Region 9991 have a slight chance of producing low level M-class activity. IIA. Geophysical Activity Summary 12/2100Z to 13/2100Z: The geomagnetic field was at quiet to unsettled levels. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels. Isolated active conditions are possible on day two of the forecast period due to coronal hole effects. III. Event Probabilities 14 Jun-16 Jun Class M 20/20/20 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 13 Jun 133 Predicted 14 Jun-16 Jun 135/140/145 90 Day Mean 13 Jun 179 V. Geomagnetic A Indices Observed Afr/Ap 12 Jun 006/010 Estimated Afr/Ap 13 Jun 006/010 Predicted Afr/Ap 14 Jun-16 Jun 006/008-010/010-008/008 VI. Geomagnetic Activity Probabilities 14 Jun-16 Jun A. Middle Latitudes Active 10/20/15 Minor storm 01/10/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/25/20 Minor storm 05/10/05 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, 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 regions numbers 10000 and higher.