Status Report

Joint USAF/NOAA Report of Solar and Geophysical Activity 13 Jan 2004

By SpaceRef Editor

January 13, 2004

Filed under Space Weather Prediction Center (NOAA), Space Weather Solar-Geophysical Activity, US

Prepared jointly by the U.S. Dept. of Commerce, NOAA,
Space Environment Center and the U.S. Air Force.

Updated 2004 Jan 13 2210 UTC

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 013 Issued at 2200Z on 13 Jan 2004

IA. Analysis of Solar Active Regions and Activity from 12/2100Z
to 13/2100Z: Solar activity was at low levels. Region 536 (S12W18)
produced several low level C-class flares during the period.
Penumbral coverage continues to decrease as this region begins to
exit the west solar limb. Region 537 (N05W16) produced a C1/Sf
flare at 0609Z. The beta-gamma/delta magnetic structure remains
intact. Region 540 (S11E68) continues to rotate into view from the
solar east limb. A trailing cluster of spots became visible late in
the period and detailed analysis is still pending further rotation
of the region onto the disk. No new regions were numbered today.

IB. Solar Activity Forecast: Solar activity is expected to be at
low to moderate levels.

IIA. Geophysical Activity Summary 12/2100Z to 13/2100Z:
The geomagnetic field was at quiet to minor storm levels. The
elevated conditions are believed to be due to a transient passage
that occurred at the ACE spacecraft near 0900Z. The M-class
activity from early on 09 January may have been the source for this
event. The greater than 2 MeV electron flux at geosynchronous orbit
reached high levels today.

IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be at quiet to active levels throughout the period.

III. Event Probabilities 14 Jan-16 Jan