Status Report

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast 13 August 2014

By SpaceRef Editor
August 13, 2014
Filed under , , ,

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 225 Issued at 2200Z on 13 Aug 2014

IA. Analysis of Solar Active Regions and Activity from 12/2100Z to
13/2100Z: Solar activity has been at very low levels for the past 24
hours. There are currently 4 numbered sunspot regions on the disk.

IB. Solar Activity Forecast: Solar activity is expected to be very low
with a chance for a C-class flares on days one, two, and three (14 Aug,
15 Aug, 16 Aug).

IIA. Geophysical Activity Summary 12/2100Z to 13/2100Z: The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed, as measured by the ACE spacecraft, reached a peak speed of
502 km/s at 13/0203Z. Total IMF reached 7 nT at 12/2124Z. The maximum
southward component of Bz reached -7 nT at 12/2124Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 174 pfu.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to unsettled levels on day one (14 Aug) and quiet levels
on days two and three (15 Aug, 16 Aug).

III. Event probabilities 14 Aug-16 Aug
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF green

IV. Penticton 10.7 cm Flux
Observed 13 Aug 103
Predicted 14 Aug-16 Aug 100/105/110
90 Day Mean 13 Aug 127

V. Geomagnetic A Indices
Observed Afr/Ap 12 Aug 011/010
Estimated Afr/Ap 13 Aug 008/010
Predicted Afr/Ap 14 Aug-16 Aug 008/008-006/005-006/005

VI. Geomagnetic Activity Probabilities 14 Aug-16 Aug
A. Middle Latitudes
Active 20/10/10
Minor Storm 05/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 15/15/15
Minor Storm 30/15/15
Major-severe storm 25/15/10

SpaceRef staff editor.