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Wednesday, July 15, 2009

Weekly Progation Forecast Bulletins


Product: Weekly Highlights and Forecasts
:Issued: 2009 Jul 14 1821 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
06 - 12 July 2009

Solar activity was very low to low. Activity was low on 06 July due to an isolated C1/Sf flare at 06/1704 UTC from Region 1024 (S26, L=247, class/area Eao/230 on 09 July). Activity dropped to low levels for the rest of the period with isolated B-class X-ray flares during 07 - 08 July from Region 1024. No flares were detected during the rest of the period as Region 1024 gradually decayed and simplified. Region 1024 quietly departed the west limb early on 12 July.

No proton events were observed at geosynchronous orbit.

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

Geomagnetic field activity was at quiet levels during 06 - 08 July. Activity increased to quiet to unsettled levels during 09 - 10 July. Activity decreased to quiet levels at all latitudes during 11 - 12 July. ACE solar wind measurements indicated the unsettled periods during 09 - 10 July were associated with a coronal hole high-speed stream (CH HSS). Solar wind velocities gradually increased during 09 - 10 July and reached a peak of 468 km/sec at 10/1436 UTC. Interplanetary magnetic field changes associated with the CH HSS included increased IMF Bt (peak 12 nT at 09/1848 UTC) and intermittent periods of southward IMF Bz (minimum -8 nT at 10/0301 UTC). Solar wind velocities gradually decreased during 10 - 12 July.

Forecast of Solar and Geomagnetic Activity
15 July - 10 August 2009

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 be at high levels during 16 - 17 July. Normal to moderate flux levels are expected during the remainder of the
period.

Geomagnetic field activity is expected to be at unsettled levels on 15 July. Activity is expected to decrease to quiet levels during 16 - 20 July. Activity is expected to increase to unsettled to active levels during 21 - 22 July due to a recurrent coronal hole high-speed stream (CH HSS). Activity is expected to decrease to quiet levels during 23 July to 08 August. Activity is expected to increase to unsettled levels during 09 - 10 August due to a recurrent CH HSS.

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2009 Jul 14 1821 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 Jul 14
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2009 Jul 15 68 8 3
2009 Jul 16 68 5 2
2009 Jul 17 68 5 2
2009 Jul 18 68 5 2
2009 Jul 19 68 5 2
2009 Jul 20 68 5 2
2009 Jul 21 68 12 4
2009 Jul 22 68 8 3
2009 Jul 23 68 5 2
2009 Jul 24 68 5 2
2009 Jul 25 70 5 2
2009 Jul 26 70 5 2
2009 Jul 27 70 5 2
2009 Jul 28 70 5 2
2009 Jul 29 70 5 2
2009 Jul 30 70 5 2
2009 Jul 31 70 5 2
2009 Aug 01 70 5 2
2009 Aug 02 70 5 2
2009 Aug 03 70 5 2
2009 Aug 04 70 5 2
2009 Aug 05 70 5 2
2009 Aug 06 68 7 2
2009 Aug 07 68 5 2
2009 Aug 08 68 5 2
2009 Aug 09 68 10 3
2009 Aug 10 68 10 3
(NOAA)