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Wednesday, May 21, 2008

Weekly Propagation Forecast Bulletins

Product: Weekly Highlights and Forecasts
:Issued: 2008 May 20 2053 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
12 - 18 May 2008

Solar activity was very low. Isolated low-level B-class flares were
detected on 12 and 17 May.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached high levels during 12 - 14 May.

Geomagnetic field activity was at quiet levels. ACE solar wind measurements indicated no significant activity during the period. Solar wind velocities ranged from 279 to 430 km/sec. IMF Bz was variable in the +7 to -5 nT range. IMF Bt ranged from 1 to 7 nT during the period.

Forecast of Solar and Geomagnetic Activity
21 May - 16 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 22 - 28 May and 01 - 10 June.

Geomagnetic field activity is expected to be at minor storm levels on 21 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 22 May as coronal hole effects subside. Quiet to unsettled levels are expected during 23 May - 02 June. Activity is expected to decrease to quiet levels during 03 - 14 June. Activity is expected to increase to unsettled levels on 15
June as a recurrent coronal hole high-speed stream begins to affect the field. A further increase to active levels is expected on 16 June as the high-speed stream continues.

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2008 May 20 2053 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/wwire.html
#
# 27-day Space Weather Outlook Table
# Issued 2008 May 20
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2008 May 21 72 25 5
2008 May 22 72 15 4
2008 May 23 72 10 3
2008 May 24 72 10 3
2008 May 25 70 10 3
2008 May 26 68 10 3
2008 May 27 68 10 3
2008 May 28 68 10 3
2008 May 29 68 12 3
2008 May 30 68 12 3
2008 May 31 68 10 3
2008 Jun 01 68 10 3
2008 Jun 02 68 10 3
2008 Jun 03 68 5 2
2008 Jun 04 68 5 2
2008 Jun 05 68 5 2
2008 Jun 06 68 5 2
2008 Jun 07 68 5 2
2008 Jun 08 68 5 2
2008 Jun 09 70 5 2
2008 Jun 10 70 5 2
2008 Jun 11 70 5 2
2008 Jun 12 72 5 2
2008 Jun 13 72 5 2
2008 Jun 14 72 5 2
2008 Jun 15 72 8 3
2008 Jun 16 72 15 4
(NOAA)