IA. Analysis of Solar Active Regions and Activity from 31/2100Z
to 01/2100Z: Solar activity has been very low. Region 1057 (N15W45)
continues a slow decay. Region 1059 (S22E10) remains stable. An
eleven degree filament disappeared near N26W31, between
01/0030-1355Z. No flares were observed during the past 24 hours.
IB. Solar Activity Forecast: Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 31/2100Z to 01/2100Z:
The geomagnetic field has been at quiet to active conditions. The
ACE spacecraft indicated the signature of a weak coronal hole high
speed stream. Solar wind speed averaged approximately 410 km/s with
IMF Bz ranging between -7/+8 nT.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be predominately quiet for the next three days (02-05
April).
III. Event Probabilities 02 Apr-04 Apr
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 01 Apr 079
Predicted 02 Apr-04 Apr 079/075/075
90 Day Mean 01 Apr 083
V. Geomagnetic A Indices
Observed Afr/Ap 31 Mar 005/004
Estimated Afr/Ap 01 Apr 008/012
Predicted Afr/Ap 02 Apr-04 Apr 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 02 Apr-04 Apr
A. Middle Latitudes
Active 01/01/01
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 01/01/01
Minor storm 01/01/01
Major-severe storm 01/01/01

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2010 Apr 02 0720 UTC
Valid To: 2010 Apr 02 0750 UTC
IP Shock Passage Observed: 2010 Apr 02 0640 UTC

 

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