Wednesday, February 13, 2008

Weekly Propagation Forecast Bulletins


Product: Weekly Highlights and Forecasts
:Issued: 2008 Feb 12 2253 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
04 - 10 February 2008

Solar activity was very low. No flares were detected. Region 982 (S09, L = 248, class/area Bxo/060 on 30 January) decayed to plage early in the period.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached high levels during 4 - 9 February.

The geomagnetic field was mostly quiet during 04 - 09 February. Activity increased to minor storm levels on 10 February with major to severe storm levels detected at high latitudes. ACE solar wind measurements indicated a solar sector boundary crossing on 08 February (negative (toward) to positive (away) polarity) associated with minor changes in velocity, proton density, and the interplanetary magnetic field (IMF). A co-rotating interaction region (CIR) was detected during 09 - 10 February, in advance of a recurrent coronal hole high-speed stream. The CIR was associated with increased proton densities (peak 27 p/cc at 10/0506 UTC) and significant changes in the IMF including increased Bt (peak 17 nT at 10/0600 UTC) and intermittent periods of southward Bz (minimum -15 nT at 10/1020 UTC). The high-speed stream commenced early on 10 February and reached a peak velocity of 742 km/sec near the close of the period.

Forecast of Solar and Geomagnetic Activity
13 February - 10 March 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
13 - 24 February and 29 February - 10 March.

The geomagnetic field is expected to be unsettled to active on 13 February due a recurrent coronal hole high-speed stream. Quiet to unsettled conditions are expected during 14 - 15 February as the high-speed stream gradually subsides. Mostly quiet conditions are
forecast for 16 - 27 February. Activity is expected to increase to active levels during 28 - 29 February due to another recurrent coronal hole high-speed stream. Quiet to unsettled levels are
expected during 01 - 07 March as the high-speed stream subsides. Activity is expected to increase to active levels during 08 - 09 March with minor to major storm periods possible at high latitudes due to a recurrent coronal hole high-speed stream. Unsettled conditions are expected on the last day of the period as the high-speed stream begins to subside.


Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2008 Feb 12 2253 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 Feb 12
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2008 Feb 13 72 15 4
2008 Feb 14 72 12 3
2008 Feb 15 72 10 3
2008 Feb 16 72 5 2
2008 Feb 17 72 5 2
2008 Feb 18 72 5 2
2008 Feb 19 72 5 2
2008 Feb 20 72 5 2
2008 Feb 21 72 8 3
2008 Feb 22 72 5 2
2008 Feb 23 72 5 2
2008 Feb 24 72 5 2
2008 Feb 25 72 5 2
2008 Feb 26 72 5 2
2008 Feb 27 72 5 2
2008 Feb 28 72 15 4
2008 Feb 29 72 15 4
2008 Mar 01 72 12 3
2008 Mar 02 72 10 3
2008 Mar 03 72 8 3
2008 Mar 04 72 5 2
2008 Mar 05 72 5 2
2008 Mar 06 72 8 3
2008 Mar 07 72 10 3
2008 Mar 08 72 15 4
2008 Mar 09 72 15 4
2008 Mar 10 72 10 3
(NOAA)