:Product: Weekly Highlights and Forecasts
:Issued: 2008 May 13 1923 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/weekly.html
#
#                Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity
05 - 11 May 2008

Solar activity was very low. No flares were detected. The visible
disk was spotless.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached
high levels during each day of the period.

Geomagnetic field activity was at quiet to unsettled levels on 05
May. Activity increased to active levels on 06 May. Activity
decreased to quiet levels during 07 - 11 May. ACE solar wind
measurements indicated a recurrent coronal hole high-speed stream
was in progress at the start of the summary period. Solar wind
velocities reached a peak of 670 km/sec at 05/2319 UTC, then
gradually decreased during the rest of the period (minimum velocity
318 km/sec at 11/2355 UTC). IMF Bt increased to a maximum of 6 nT at
05/0135 UTC, then ranged from 01 - 05 nT during the rest of the
period. IMF Bz was variable in the + 05 nT range.

Forecast of Solar and Geomagnetic Activity
14 May - 09 June 2008

Solar activity is expected to be very low.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to reach high levels during
21 - 28 May and 01 - 09 June.

Geomagnetic field activity is expected to be at quiet levels during
14 - 19 May. Activity is expected to increase to minor storm levels
on 20 May with major storm levels possible at high latitudes due to
a recurrent coronal hole high-speed stream. Activity is expected to
decrease to active levels on 21 May as high-speed stream effects
begin to subside. Quiet to unsettled levels are expected during 22
May - 
02 June. Quiet conditions are expected during 03 - 09 June.