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"Solar activity was very low. No flares were observed and the disk is
spotless." Joint USAF/NOAA Report of Solar and Geophysical Activity 25 Mar 2009 STATUS REPORT Date Released: Wednesday, March 25, 2009 Source: Space Environment Center (NOAA) Product: Report of Solar-Geophysical Activity Issued: 2009 Mar 25 2200 UTC Prepared jointly by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center and the U.S. Air Force. Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 084 Issued at 2200Z on 25 Mar 2009 IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity was very low. No flares were observed and the disk is spotless. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 24/2100Z to 25/2100Z: The geomagnetic field was quiet to unsettled with isolated active periods from 25/ 0000 to 0600. The increase in activity was due to a rise in solar wind speed and intermittent southward Bz. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled with isolated active periods possible on days one and two (26-27 March). Day three (28 March) is expected to be quiet. III. Event Probabilities 26 Mar-28 Mar Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 25 Mar 069 Predicted 26 Mar-28 Mar 070/070/072 90 Day Mean 25 Mar 070 V. Geomagnetic A Indices Observed Afr/Ap 24 Mar 006/008 Estimated Afr/Ap 25 Mar 007/010 Predicted Afr/Ap 26 Mar-28 Mar 007/010-007/008-005/005 VI. Geomagnetic Activity Probabilities 26 Mar-28 Mar A. Middle Latitudes Active 10/10/05 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 20/15/10 Minor storm 05/05/01 Major-severe storm 01/01/01 |
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