Joint USAF/NOAA Report of Solar and Geophysical Activity 1 June 2010

:Product: Report of Solar-Geophysical Activity
:Issued: 2010 Jun 01 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 152 Issued at 2200Z on 01 Jun 2010
IA. Analysis of Solar Active Regions and Activity from 31/2100Z
to 01/2100Z: Solar activity was very low. The SOHO C2 imagery
observed a slow moving CME at 31/2154Z. The plane of sky speed was
estimated around 307 km/s. This event was correlated with a
disappearing filament located near N30W30. 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 was at quiet to active levels. The ACE
spacecraft observations show the continued presence of the coronal
hole high speed stream. Solar wind speeds are around 525 km/s with
IMF Bz at +/- 6 nT. The greater than 2 MeV electron flux at
geosynchronous orbit was at high levels today.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet to unsettled with isolated active conditions
for the next two days (02-03 June). Predominantly quiet levels are
expected for day three (04 June) as the high speed stream subsides.
III. Event Probabilities 02 Jun-04 Jun
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 01 Jun 073
Predicted 02 Jun-04 Jun 072/072/072
90 Day Mean 01 Jun 078
V. Geomagnetic A Indices
Observed Afr/Ap 31 May 014/016
Estimated Afr/Ap 01 Jun 010/012
Predicted Afr/Ap 02 Jun-04 Jun 008/010-006/008-005/005
VI. Geomagnetic Activity Probabilities 02 Jun-04 Jun
A. Middle Latitudes
Active 15/10/05
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 25/15/10
Minor storm 05/01/01
Major-severe storm 01/01/01