Product: Weekly Highlights and Forecasts:Issued: 2008 May 07 1453 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
28 April - 04 May 2008
Solar activity was very low. Region 993 (S29, L=086, class/area, Bxo/010 on 04 May) formed on the visible solar disk on 04 May as a small, simple bi-polar sunspot group. This region displayed a new cycle magnetic configuration (positive polarity leader, negative
polarity trailer).
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit reached high levels during 28 April - 01 May.
The geomagnetic field was at quiet to unsettled levels during 28 April until late in the UTC day on 30 April when activity levels increased to unsettled to active conditions. Mostly unsettled to
active conditions persisted until early on 02 May as activity decreased to quiet to unsettled levels, and remained so through the end of the summary period. Solar wind speed measurements from the ACE spacecraft began the period at approximately 500 km/s with the
IMF Bz ranging between +/-5 nT; speeds then slowly declined to around 370 km/s by midday on 30 April. At approximately 30 April at 1500 UTC an increase was observed in solar wind data consistent with a glancing blow from a coronal mass ejection (CME) observed on 26 April. For the next several days wind speed remained elevated with a maximum of 525 km/s on 01 May at 0028 UTC and IMF Bz ranging between +/- 8 nT. Midday on 03 May a coronal hole high speed stream rotated into a geoeffective position elevating wind speeds to around 580 km/s. The period ended with wind speeds above 600 km/s.
Forecast of Solar and Geomagnetic Activity
07 May - 02 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 07 - 08 May, 21 - 28 May, and 01 - 02 June.
Geomagnetic field activity is expected to be at quiet to unsettled levels 07 - 12 May. On 13 May, a recurrent coronal hole high speed stream is expected to increase activity levels to unsettled to
active conditions. Activity levels are expected to decline to quiet to unsettled levels 14 - 18 May. Conditions should increase to unsettled to active, with a chance for minor storm levels at middle
latitudes and major storm periods at high latitudes on 19 - 21 May, due to a recurrent coronal hole high speed stream. On 22 May, activity levels should abate to quiet to unsettled levels until 26 May. Recurrent high speed streams are expected to increase activity again to unsettled to active levels for 27 May - 02 June.
Product: 27-day Space Weather Outlook Table 27DO.txt:Issued: 2008 May 07 1453 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 06
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2008 May 07 70 8 3
2008 May 08 70 5 2
2008 May 09 70 8 3
2008 May 10 70 5 2
2008 May 11 70 5 2
2008 May 12 70 5 2
2008 May 13 70 12 3
2008 May 14 70 5 2
2008 May 15 70 5 2
2008 May 16 70 5 2
2008 May 17 70 5 2
2008 May 18 70 5 2
2008 May 19 70 10 3
2008 May 20 70 25 5
2008 May 21 70 15 3
2008 May 22 70 8 3
2008 May 23 70 5 2
2008 May 24 70 5 2
2008 May 25 70 5 2
2008 May 26 70 5 2
2008 May 27 70 10 3
2008 May 28 70 10 3
2008 May 29 70 12 3
2008 May 30 70 12 3
2008 May 31 70 10 3
2008 Jun 01 70 10 3
2008 Jun 02 70 10 3
(NOAA)
