Product: Weekly Highlights and Forecasts
:Issued: 2007 Aug 28 2024 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Environment Center
# Product description and SEC contact on the Web
# http://www.sec.noaa.gov/weekly.html
# Weekly Highlights and Forecasts
:Issued: 2007 Aug 28 2024 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Environment Center
# Product description and SEC contact on the Web
# http://www.sec.noaa.gov/weekly.html
# Weekly Highlights and Forecasts
Highlights of Solar and Geomagnetic Activity
20 - 26 August 2007
Solar activity was very low to low this period. An impulsive C2.0/sn
flare was observed at 24/0754 UTC from Region 969 (S05, L=187,
class/area, Cso/110 on 25 August).
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at
normal levels the entire period.
Geomagnetic field activity ranged from quiet to unsettled levels during most of the period. ACE solar wind data indicated a recurrent coronal hole wind stream occurred during 25 - 26 August. Late on 25 August, the field responded with unsettled to active conditions at all latitudes, while minor to major storm levels were observed at high latitudes mid-day on the 25th. A co-rotating interaction region (CIR) preceded the onset of the stream and was associated with a solar sector boundary shift (away [+] to toward [-]) as well as a short-lived density increase (peak 36.5 p/cc at 25/1115 UTC).
The CIR was also associated with increased IMF Bt (peak 10.3 nT at 25/1438 UTC) and increased IMF Bz variability (minimum -8.1 nT at 25/1135 UTC and maximum +8.3 nT at 25/1216 UTC). The recurrent wind stream commenced mid-day on 26 August and reached a peak of 519.7 km/sec at 26/2307 UTC, and was still rising at the close of the summary period.
Forecast of Solar and Geomagnetic Activity
29 August - 24 September 2007
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 reach high levels during 29 August - 10 September, and again on 24 September.
Quiet to unsettled conditions are expected during 29 August - 01 September. Activity is expected to increase to active to minor storm levels on 02 - 03 September due to a recurrent coronal hole high-speed stream. Activity is expected to decrease to quiet to unsettled levels during 04 - 05 September. Unsettled to active conditions are expected during 06 - 07 September as another recurrent high-speed stream disturbs the field. Activity is expected to decrease to quiet to unsettled levels through 21 September. Unsettled to active conditions are expected 22 - 24 September due to another recurrent high-speed stream
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2007 Aug 28 2024 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Environment Center
# Product description and SEC contact on the Web
# http://www.sec.noaa.gov/wwire.html
# 27-day Space Weather Outlook Table
# Issued 2007 Aug 28
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2007 Aug 29 70 8 3
2007 Aug 30 70 5 2
2007 Aug 31 70 5 2
2007 Sep 01 70 5 2
2007 Sep 02 70 10 4
2007 Sep 03 70 20 5
2007 Sep 04 65 8 3
2007 Sep 05 65 5 2
2007 Sep 06 65 15 4
2007 Sep 07 65 15 4
2007 Sep 08 65 5 2
2007 Sep 09 65 5 2
2007 Sep 10 65 5 2
2007 Sep 11 65 5 2
2007 Sep 12 65 8 3
2007 Sep 13 65 8 3
2007 Sep 14 65 5 2
2007 Sep 15 65 5 2
2007 Sep 16 65 5 2
2007 Sep 17 70 5 2
2007 Sep 18 70 8 3
2007 Sep 19 70 5 2
2007 Sep 20 70 5 2
2007 Sep 21 70 8 3
2007 Sep 22 70 10 4
2007 Sep 23 70 10 4
2007 Sep 24 70 10 4
(NOAA)
20 - 26 August 2007
Solar activity was very low to low this period. An impulsive C2.0/sn
flare was observed at 24/0754 UTC from Region 969 (S05, L=187,
class/area, Cso/110 on 25 August).
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at
normal levels the entire period.
Geomagnetic field activity ranged from quiet to unsettled levels during most of the period. ACE solar wind data indicated a recurrent coronal hole wind stream occurred during 25 - 26 August. Late on 25 August, the field responded with unsettled to active conditions at all latitudes, while minor to major storm levels were observed at high latitudes mid-day on the 25th. A co-rotating interaction region (CIR) preceded the onset of the stream and was associated with a solar sector boundary shift (away [+] to toward [-]) as well as a short-lived density increase (peak 36.5 p/cc at 25/1115 UTC).
The CIR was also associated with increased IMF Bt (peak 10.3 nT at 25/1438 UTC) and increased IMF Bz variability (minimum -8.1 nT at 25/1135 UTC and maximum +8.3 nT at 25/1216 UTC). The recurrent wind stream commenced mid-day on 26 August and reached a peak of 519.7 km/sec at 26/2307 UTC, and was still rising at the close of the summary period.
Forecast of Solar and Geomagnetic Activity
29 August - 24 September 2007
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 reach high levels during 29 August - 10 September, and again on 24 September.
Quiet to unsettled conditions are expected during 29 August - 01 September. Activity is expected to increase to active to minor storm levels on 02 - 03 September due to a recurrent coronal hole high-speed stream. Activity is expected to decrease to quiet to unsettled levels during 04 - 05 September. Unsettled to active conditions are expected during 06 - 07 September as another recurrent high-speed stream disturbs the field. Activity is expected to decrease to quiet to unsettled levels through 21 September. Unsettled to active conditions are expected 22 - 24 September due to another recurrent high-speed stream
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2007 Aug 28 2024 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Environment Center
# Product description and SEC contact on the Web
# http://www.sec.noaa.gov/wwire.html
# 27-day Space Weather Outlook Table
# Issued 2007 Aug 28
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2007 Aug 29 70 8 3
2007 Aug 30 70 5 2
2007 Aug 31 70 5 2
2007 Sep 01 70 5 2
2007 Sep 02 70 10 4
2007 Sep 03 70 20 5
2007 Sep 04 65 8 3
2007 Sep 05 65 5 2
2007 Sep 06 65 15 4
2007 Sep 07 65 15 4
2007 Sep 08 65 5 2
2007 Sep 09 65 5 2
2007 Sep 10 65 5 2
2007 Sep 11 65 5 2
2007 Sep 12 65 8 3
2007 Sep 13 65 8 3
2007 Sep 14 65 5 2
2007 Sep 15 65 5 2
2007 Sep 16 65 5 2
2007 Sep 17 70 5 2
2007 Sep 18 70 8 3
2007 Sep 19 70 5 2
2007 Sep 20 70 5 2
2007 Sep 21 70 8 3
2007 Sep 22 70 10 4
2007 Sep 23 70 10 4
2007 Sep 24 70 10 4
(NOAA)