:Product: 0318RSGA.txt
:Issued: 2014 Mar 18 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 77 Issued at 2200Z on 18 Mar 2014

IA.  Analysis of Solar Active Regions and Activity from 17/2100Z to
18/2100Z: Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C4 event observed at
18/1533Z from Region 2010 (S14E50). There are currently 9 numbered
sunspot regions on the disk.
IB.  Solar Activity Forecast: Solar activity is expected to be low with
a chance for M-class flares on days one, two, and three (19 Mar, 20 Mar,
21 Mar).

IIA.  Geophysical Activity Summary 17/2100Z to 18/2100Z: 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 360 km/s at
18/1634Z. Total IMF reached 7 nT at 18/2001Z. The maximum southward
component of Bz reached -5 nT at 18/1718Z.
IIB.  Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet levels on days one, two, and three (19 Mar, 20 Mar, 21
Mar).

III.  Event probabilities 19 Mar-21 Mar
Class M    40/40/30
Class X    01/01/01
Proton     01/01/01
PCAF       green

IV.  Penticton 10.7 cm Flux
Observed           18 Mar 138
Predicted   19 Mar-21 Mar 140/140/135
90 Day Mean        18 Mar 157

V.  Geomagnetic A Indices
Observed Afr/Ap 17 Mar  005/002
Estimated Afr/Ap 18 Mar  007/008
Predicted Afr/Ap 19 Mar-21 Mar  006/005-006/005-006/005

VI.  Geomagnetic Activity Probabilities 19 Mar-21 Mar
A.  Middle Latitudes
Active                05/05/05
Minor Storm           01/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/15/15
Minor Storm           15/15/15
Major-severe storm    05/05/05