Report of Solar-Geophysical Activity

Report of Solar-Geophysical Activity
Issued: 2007 May 28 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 148 Issued at 2200Z on 28 May 2007

IA. Analysis of Solar Active Regions and Activity from 27/2100Z to 28/2100Z: Solar activity has been very low.
IB. Solar Activity Forecast: Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 27/2100Z to 28/2100Z:
The geomagnetic field has been predominately quiet. The greater than
2 MeV electron flux at geosynchronous orbit reached high levels again today.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet May 29 - 31.
III. Event Probabilities 29 May-31 May
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 28 May 069
Predicted 29 May-31 May 065/065/065
90 Day Mean 28 May 073
V. Geomagnetic A Indices
Observed Afr/Ap 27 May 010/012
Estimated Afr/Ap 28 May 004/005
Predicted Afr/Ap 29 May-31 May 003/005-003/005-002/005 VI. Geomagnetic Activity Probabilities 29 May-31 May 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 10/10/10
Major-severe storm 01/01/01

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2007 May 29 0500 UTC
Station: GOES12
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 18400 pfu

For current space weather conditions please refer to:

http://www.sec.noaa.gov/SWN/

http://www.sec.noaa.gov/alerts/

NOAA Space Weather Scale descriptions can be found at www.sec.noaa.gov/NOAAscales