:Product: 0605RSGA.txt
:Issued: 2021 Jun 05 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 Solar Geophysical Activity Report and Forecast
SDF Number 156 Issued at 2200Z on 05 Jun 2021

IA.  Analysis of Solar Active Regions and Activity from 04/2100Z to
05/2100Z: Solar activity has been at very low levels for the past 24
hours. There are currently 2 numbered sunspot regions on the disk.
IB.  Solar Activity Forecast: Solar activity is expected to be very low
with a slight chance for a C-class flare on days one, two, and three (06
Jun, 07 Jun, 08 Jun).

IIA.  Geophysical Activity Summary 04/2100Z to 05/2100Z: The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 436 km/s at 04/2110Z. Total IMF reached 6 nT at
05/1227Z. The maximum southward component of Bz reached -4 nT at
05/1700Z.  Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 145 pfu.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet levels on days one and two (06 Jun, 07 Jun) and unsettled
to active levels on day three (08 Jun).

III.  Event probabilities 06 Jun-08 Jun
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           05 Jun 074
Predicted   06 Jun-08 Jun 076/076/073
90 Day Mean        05 Jun 077

V.  Geomagnetic A Indices
Observed Afr/Ap 04 Jun  004/005
Estimated Afr/Ap 05 Jun  004/004
Predicted Afr/Ap 06 Jun-08 Jun  006/005-005/005-011/015

VI.  Geomagnetic Activity Probabilities 06 Jun-08 Jun
A.  Middle Latitudes
Active                10/10/30
Minor Storm           01/01/10
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/15/15
Minor Storm           20/20/30
Major-severe storm    10/10/40