Pages

Wednesday, February 11, 2009

Weekly Propagation Forecast Bulletins

Product: Weekly Highlights and Forecasts:
Issued: 2009 Feb 10 2051 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact: www.swpc.noaa.gov/weekly.html
#
# Weekly Highlights and Forecasts

Highlights of Solar and Geomagnetic Activity
02 - 08 February 2009

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

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
normal levels.

Geomagnetic field activity was at quiet levels on 02 February. A sudden impulse of 10 nT was observed at the Boulder magnetometer at 2014 UTC on 03 February, following a discontinuity in the solar wind signature observed at the ACE satellite. Quiet to minor storm conditions, with major storm levels at high latitudes, were observed from late on 03 February to early on 04 February. During this period, solar wind signatures from the ACE satellite were consistent
with a possible CME. Activity decreased to quiet conditions for the rest of the period. During the summary period, ACE solar wind velocities ranged from a high of 405 km/s at 04/0050 UTC to a low of 298 km/s at 06/1750 UTC. The Bz component of the IMF ranged primarily between -3.5 nT and +3.8nT. However, between 03/1912 UTC and 05/0155 UTC, Bz varied between -10 nT and +10 nT.

Forecast of Solar and Geomagnetic Activity
11 February - 09 March 2009


Solar activity is expected to be at very low levels.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at normal levels.
The geomagnetic field is expected to be at quiet levels 11-14 February. Activity is expected to increase to quiet to unsettled levels, with isolated active conditions, on 15 February due to a
recurrent coronal hole high-speed stream (CH HSS). Activity is expected to decrease to quiet levels during 16-21 February as the HSS subsides. Activity is expected to increase to quiet to unsettled levels, with isolated active levels, on 22 February due to another CH HSS. Isolated minor to major storm conditions are possible at high latitudes during this period. Activity is expected to decrease to mostly quiet levels from 23 February - 09 March.

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2009 Feb 10 2052 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact: www.swpc.noaa.gov/wwire.html
#
# 27-day Space Weather Outlook Table
# Issued 2009 Feb 10
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2009 Feb 11 70 5 2
2009 Feb 12 70 5 2
2009 Feb 13 70 5 2
2009 Feb 14 70 5 2
2009 Feb 15 70 8 3
2009 Feb 16 70 5 2
2009 Feb 17 70 5 2
2009 Feb 18 70 5 2
2009 Feb 19 70 5 2
2009 Feb 20 70 5 2
2009 Feb 21 70 5 2
2009 Feb 22 70 8 3
2009 Feb 23 70 5 2
2009 Feb 24 70 5 2
2009 Feb 25 70 5 2
2009 Feb 26 70 5 2
2009 Feb 27 70 5 2
2009 Feb 28 70 5 2
2009 Mar 01 70 5 2
2009 Mar 02 70 5 2
2009 Mar 03 70 5 2
2009 Mar 04 70 5 2
2009 Mar 05 70 5 2
2009 Mar 06 70 5 2
2009 Mar 07 70 5 2
2009 Mar 08 70 5 2
2009 Mar 09 70 5 2
(NOAA)