:Product: Weekly Highlights and Forecasts
:Issued: 2001 Jul 11 2112 UT
Highlights of Solar and Geomagnetic Activity
02 - 08 July 2001

Solar activity was at very low to low levels. Very low activity
occurred through 06 July with isolated B-class X-ray flares.
Activity increased to low levels during the rest of the period due
to isolated C-class subflares from two developing active regions.
One of these, Region 9530 (S20, L = 293, class/area Cso/040 on 06
July) produced the largest flare of the period: a C9/Sf at 07/0331
UTC associated with a Type II radio sweep. Region 9530 entered a
decay phase on 08 July. Region 9531 (S06, L = 223, class/area
Dao/050 on 08 July) emerged on 08 July, then grew at a moderate pace
as it produced isolated C-class subflares. The 06 July 10.7 cm solar
radio flux reading of 116 was the lowest observed since September
1999.

Data were available from the Advanced Composition Explorer (ACE)
spacecraft for most of the period. There were no high speed stream
or CME signatures observed during the period. There was a period of
sustained southward IMF Bz during approximately 08/1900 - 09/0230
UTC with deflections to minus 06 nT (GSM).

There were no proton events during the period.

The greater than 2 MeV electron flux at geosynchronous orbit was
normal to moderate levels during the period.

Geomagnetic field activity was at quiet to unsettled levels through
most of the period. However, active periods occurred during 08/2100
- 09/0300 UTC associated with a sustained period of southward IMF
Bz.

Forecast of Solar and Geomagnetic Activity
11 July - 06 August 2001

Solar activity is expected to range from low to moderate levels.
Isolated M-class flares are will be possible during the period.
There will be a slight chance for a major flare during the period.

There will be a slight chance for a proton event during the period.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be at normal to moderate levels during most of the
period.

The geomagnetic field is expected to be at quiet to unsettled levels
during most of the period, barring an Earth-directed CME. However,
brief active conditions will be possible during 16 - 17 July.

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