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"Solar activity was very low. No flares occurred during the past 24 hours
and the solar disk was void of sunspots." Joint USAF/NOAA Report of Solar and Geophysical Activity 02 Apr 2009 STATUS REPORT Date Released: Thursday, April 2, 2009 Source: Space Environment Center (NOAA) Product: Report of Solar-Geophysical Activity Issued: 2009 Apr 02 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 092 Issued at 2200Z on 02 Apr 2009 IA. Analysis of Solar Active Regions and Activity from 01/2100Z to 02/2100Z: Solar activity was very low. No flares occurred during the past 24 hours and the solar disk was void of sunspots. IB. Solar Activity Forecast: Solar activity is expected to be very low for the next three days (3-5 April). IIA. Geophysical Activity Summary 01/2100Z to 02/2100Z: The geomagnetic field was quiet during the past 24 hours. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled for 3-4 April in anticipation of a small increase in solar wind velocity. The increase is forecast based on recurrence and based on observations of an increase at Stereo-B on 31 March. The geomagnetic field is expected to be quiet on the third day (5 April). III. Event Probabilities 03 Apr-05 Apr Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 02 Apr 071 Predicted 03 Apr-05 Apr 071/071/071 90 Day Mean 02 Apr 070 V. Geomagnetic A Indices Observed Afr/Ap 01 Apr 003/004 Estimated Afr/Ap 02 Apr 003/005 Predicted Afr/Ap 03 Apr-05 Apr 007/008-007/008-005/005 VI. Geomagnetic Activity Probabilities 03 Apr-05 Apr A. Middle Latitudes Active 10/10/05 Minor storm 05/05/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/10 Minor storm 10/10/05 Major-severe storm 01/01/01 |
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