Report of Solar Geophysical Activity

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 120 Issued at 2200Z on 30 Apr 2015

IA.  Analysis of Solar Active Regions and Activity from 29/2100Z to
30/2100Z: Solar activity has been at very low levels for the past 24
hours. There is currently 1 numbered sunspot region 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 (01
May, 02 May, 03 May).

IIA.  Geophysical Activity Summary 29/2100Z to 30/2100Z: The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 397 km/s at
30/2021Z. Total IMF reached 11 nT at 30/0826Z. The maximum southward
component of Bz reached -8 nT at 30/1640Z.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to unsettled levels on day one (01 May) and quiet levels
on days two and three (02 May, 03 May).

III.  Event probabilities 01 May-03 May
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           30 Apr 102
Predicted   01 May-03 May 100/105/105
90 Day Mean        30 Apr 128

V.  Geomagnetic A Indices
Observed Afr/Ap 29 Apr  004/005
Estimated Afr/Ap 30 Apr  007/008
Predicted Afr/Ap 01 May-03 May  007/010-007/008-006/005

VI.  Geomagnetic Activity Probabilities 01 May-03 May
A.  Middle Latitudes
Active                20/15/10
Minor Storm           05/05/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/15/20
Minor Storm           30/25/20
Major-severe storm    25/20/10

Radio Events Observed 30 Apr 2015
A.  245 MHz Bursts
No 245 MHz Burst Observed.
B.  245 MHz Noise Storms
No 245 MHz Noise Storms Observed.