Product: Weekly Highlights and Forecasts
:Issued: 2011 May 31 2115 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 23 - 29 May 2011
Solar activity was at very low to moderate levels during the period. The period began with very low activity, with a few isolated B-class flares observed. A long-duration B2 flare was observed at 24/2237 UTC from Region 1220 (N13, L=248, class/area Bxo/050 on 23 May). Activity increased to low levels on 25 May, with two C-class flares from Region 1223 (S16, L=115, class/area Dso/050 on 27 May). The first was a C1 flare at 25/2103 UTC, followed by a C1/Sf at 25/2158 UTC. A nine-degree filament eruption was observed between 25/0801-1256 UTC. Activity decreased to very low on 26 May, with three B-class flares, included a B4/Sf at 26/0110 UTC. Activity increased to low levels on 27 May, with five C-class flares, including a C5 flare at 27/1643 UTC from Region 1226 (S21, L=036, class/area Eki/360 on 29 May). Activity increased to moderate levels during 28-29 May. A long-duration M1 /Sf was observed at 28/2150 UTC from Region 1226, as well as an M1/1F observed at 29/1033 UTC. Type II radio emission (554 km/s shock velocity) was associated with this event.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at normal to moderate levels during 23 - 28 May. High levels were reached on 29 May.
Geomagnetic field activity was predominantly quiet during 23 - 26 May. Activity increased to quiet to unsettled levels, with active periods at high latitudes, on 27 May. Activity increased to quiet to severe levels during 28-29 May. A co-rotating interaction region, in advance of a coronal hole high-speed stream (CH HSS), occurred during 27- 29 May. A CME was was observed to interact with the field during 28-29 May.
Forecast of Solar and Geomagnetic Activity 01 June - 27 June 2011
Solar activity is expected to be low with a chance for M-class flares through 9 June. Activity is expected to decrease to very low to low levels during 10 - 14 June. Activity is expected to increase to low with a chance for M-class flares.
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 through 5 June. Normal levels are expected during 9 - 27 June.
Geomagnetic field activity is expected to be at quiet to unsettled levels, with active levels at high latitudes during 1 - 5 June, due to an expected CME and a recurrent CH HSS. Activity is expected to decrease to predominantly quiet levels during 6 - 10 June. Activity is expected to increase to quiet to unsettled levels, with isolated active levels at high latitudes during 11-13 June, due to an expected CH HSS. Quiet to unsettled levels are expected during 14-22 June. Quiet to unsettled levels, with isolated active levels are expected during 23 - 25 June due to a recurrent CH HSS. Actitvity is expected to decrease to mostly quiet during 26 - 27 June.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2011 May 31 2115 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 2011-05-31
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2011 Jun 01 115 10 4
2011 Jun 02 115 12 4
2011 Jun 03 115 8 3
2011 Jun 04 110 8 3
2011 Jun 05 110 7 2
2011 Jun 06 105 5 2
2011 Jun 07 105 5 2
2011 Jun 08 100 5 2
2011 Jun 09 90 5 2
2011 Jun 10 90 5 2
2011 Jun 11 85 12 4
2011 Jun 12 90 12 4
2011 Jun 13 90 10 3
2011 Jun 14 90 5 2
2011 Jun 15 95 5 2
2011 Jun 16 95 5 2
2011 Jun 17 100 5 2
2011 Jun 18 100 5 2
2011 Jun 19 100 5 2
2011 Jun 20 105 5 2
2011 Jun 21 105 5 2
2011 Jun 22 110 4 2
2011 Jun 23 110 12 4
2011 Jun 24 115 15 4
2011 Jun 25 115 10 3
2011 Jun 26 115 5 2
2011 Jun 27 115 5 2
(NOAA)
:Issued: 2011 May 31 2115 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 23 - 29 May 2011
Solar activity was at very low to moderate levels during the period. The period began with very low activity, with a few isolated B-class flares observed. A long-duration B2 flare was observed at 24/2237 UTC from Region 1220 (N13, L=248, class/area Bxo/050 on 23 May). Activity increased to low levels on 25 May, with two C-class flares from Region 1223 (S16, L=115, class/area Dso/050 on 27 May). The first was a C1 flare at 25/2103 UTC, followed by a C1/Sf at 25/2158 UTC. A nine-degree filament eruption was observed between 25/0801-1256 UTC. Activity decreased to very low on 26 May, with three B-class flares, included a B4/Sf at 26/0110 UTC. Activity increased to low levels on 27 May, with five C-class flares, including a C5 flare at 27/1643 UTC from Region 1226 (S21, L=036, class/area Eki/360 on 29 May). Activity increased to moderate levels during 28-29 May. A long-duration M1 /Sf was observed at 28/2150 UTC from Region 1226, as well as an M1/1F observed at 29/1033 UTC. Type II radio emission (554 km/s shock velocity) was associated with this event.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at normal to moderate levels during 23 - 28 May. High levels were reached on 29 May.
Geomagnetic field activity was predominantly quiet during 23 - 26 May. Activity increased to quiet to unsettled levels, with active periods at high latitudes, on 27 May. Activity increased to quiet to severe levels during 28-29 May. A co-rotating interaction region, in advance of a coronal hole high-speed stream (CH HSS), occurred during 27- 29 May. A CME was was observed to interact with the field during 28-29 May.
Forecast of Solar and Geomagnetic Activity 01 June - 27 June 2011
Solar activity is expected to be low with a chance for M-class flares through 9 June. Activity is expected to decrease to very low to low levels during 10 - 14 June. Activity is expected to increase to low with a chance for M-class flares.
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 through 5 June. Normal levels are expected during 9 - 27 June.
Geomagnetic field activity is expected to be at quiet to unsettled levels, with active levels at high latitudes during 1 - 5 June, due to an expected CME and a recurrent CH HSS. Activity is expected to decrease to predominantly quiet levels during 6 - 10 June. Activity is expected to increase to quiet to unsettled levels, with isolated active levels at high latitudes during 11-13 June, due to an expected CH HSS. Quiet to unsettled levels are expected during 14-22 June. Quiet to unsettled levels, with isolated active levels are expected during 23 - 25 June due to a recurrent CH HSS. Actitvity is expected to decrease to mostly quiet during 26 - 27 June.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2011 May 31 2115 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 2011-05-31
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2011 Jun 01 115 10 4
2011 Jun 02 115 12 4
2011 Jun 03 115 8 3
2011 Jun 04 110 8 3
2011 Jun 05 110 7 2
2011 Jun 06 105 5 2
2011 Jun 07 105 5 2
2011 Jun 08 100 5 2
2011 Jun 09 90 5 2
2011 Jun 10 90 5 2
2011 Jun 11 85 12 4
2011 Jun 12 90 12 4
2011 Jun 13 90 10 3
2011 Jun 14 90 5 2
2011 Jun 15 95 5 2
2011 Jun 16 95 5 2
2011 Jun 17 100 5 2
2011 Jun 18 100 5 2
2011 Jun 19 100 5 2
2011 Jun 20 105 5 2
2011 Jun 21 105 5 2
2011 Jun 22 110 4 2
2011 Jun 23 110 12 4
2011 Jun 24 115 15 4
2011 Jun 25 115 10 3
2011 Jun 26 115 5 2
2011 Jun 27 115 5 2
(NOAA)
