:Product: 0501RSGA.txt
:Issued: 2022 May 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 Solar Geophysical Activity Report and Forecast
SDF Number 121 Issued at 2200Z on 01 May 2022

IA.  Analysis of Solar Active Regions and Activity from 30/2100Z to
01/2100Z: Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C3 event observed at
01/1128Z. There are currently 3 numbered sunspot regions on the disk.
IB.  Solar Activity Forecast: Solar activity is expected to be low with
a slight chance for an M-class flare on day one (02 May) and likely to
be low with a slight chance for an M-class flare on days two and three
(03 May, 04 May).

IIA.  Geophysical Activity Summary 30/2100Z to 01/2100Z: The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 541 km/s at 01/2029Z. Total IMF reached 6
nT at 30/2255Z. The maximum southward component of Bz reached -4 nT at
01/1628Z.  Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 1553 pfu.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to active levels on day one (02 May), quiet to unsettled
levels on day two (03 May) and quiet levels on day three (04 May).
Protons greater than 10 Mev have a slight chance of crossing threshold
on day one (02 May).

III.  Event probabilities 02 May-04 May
Class M    15/10/10
Class X    01/01/01
Proton     10/01/01
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           01 May 109
Predicted   02 May-04 May 105/105/105
90 Day Mean        01 May 119

V.  Geomagnetic A Indices
Observed Afr/Ap 30 Apr  016/018
Estimated Afr/Ap 01 May  010/009
Predicted Afr/Ap 02 May-04 May  012/015-007/008-005/005

VI.  Geomagnetic Activity Probabilities 02 May-04 May
A.  Middle Latitudes
Active                30/10/10
Minor Storm           15/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/15/15
Minor Storm           30/20/20
Major-severe storm    45/20/10