IA. Analysis of Solar Active Regions and Activity from 30/2100Z to 31/2100Z: Solar activity remained at low levels. Region 958 (S13E35) continues to decay. A C1 x-ray flare occurred at 31/1253Z, and appeared to have come from a source region just beyond the east limb. No new regions were numbered today.

IB. Solar Activity Forecast: Solar activity is expected to be at very low to low levels.

IIA. Geophysical Activity Summary 30/2100Z to 31/2100Z:
The geomagnetic field was at quiet levels. 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 at predominantly quiet levels on 01 and 02 June. A recurrent coronal hole high speed stream is expected to become geoeffective on 03 June. Active conditions are possible with the onset of the coronal hole.

III. Event Probabilities 01 Jun-03 Jun
Class M 10/10/10
Class X 01/01/01
Proton 01/01/01
PCAF Green

IV. Penticton 10.7 cm Flux
Observed 31 May 075
Predicted 01 Jun-03 Jun 075/075/075
90 Day Mean 31 May 073
V. Geomagnetic A Indices
Observed Afr/Ap 30 May 003/004
Estimated Afr/Ap 31 May 003/005
Predicted Afr/Ap 01 Jun-03 Jun 003/005-003/005-010/015 VI. Geomagnetic Activity Probabilities 01 Jun-03 Jun A. Middle Latitudes
Active 15/15/25
Minor storm 01/01/10
Major-severe storm 01/01/05
B. High Latitudes
Active 15/15/30
Minor storm 05/05/15
Major-severe storm 01/01/10


 

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2007 May 31 0500 UTC
Station: GOES12
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 24500 pfu

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