Space Weather Outlook September 25, 2017 at 12:04AM

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA SPACE WEATHER ADVISORY OUTLOOK #17-39 2017 September 24 at 9:51 p.m. MDT (2017 September 25 0351 UTC) **** SPACE WEATHER OUTLOOK **** Summary For September 18-24 G1 (Minor) geomagnetic storm conditions were observed on 18 Sep due to coronal hole high speed stream influence. No other significant space weather was observed during the summary period. Outlook For September 25-October 1 G1 (Minor) geomagnetic storms are likely on 27 and 29 Sep while G2 (Moderate) geomagnetic storms are likely on 28 Sep, all due to effects from the anticipated arrival of a recurrent coronal hole high speed stream. No other siginificant space weather is expected for the outlook period. Data used to provide space weather services are contributed by NOAA, USAF, NASA, NSF, USGS, the International Space Environment Services and other observatories, universities, and institutions. More information is available at SWPC's Web site http://swpc.noaa.gov Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to the Product Subscription Site. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact SWPC Help.

Space Weather Outlook September 17, 2017 at 10:25PM

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA SPACE WEATHER ADVISORY OUTLOOK #17-38 2017 September 17 at 8:11 p.m. MDT (2017 September 18 0211 UTC) **** SPACE WEATHER OUTLOOK **** Summary For September 11-17 Solar radiation storms reached S1 (Minor) levels on 11-14 Sep, S2 (Moderate) levels on 11-12 Sep and S3 (Strong) levels on 11 Sep. This activity was due to effects from a R3 (Strong) radio blackout observed on 10 Sep. Geomagnetic storms reached G1 (Minor) levels on 12-16 Sep and G2 (Moderate) levels on 14-16 Sep. The G1 activity on 12-13 Sep was related to CME effects while the G1-G2 activity on 14-16 Sep was related to CH HSS effects. Outlook For September 18-24 R1-R2 (Minor-Moderate) radio blackouts are possible on 23-24 Sep due to the return of old active Region 2673. S1-S2 (Minor-Moderate) solar radiation storms are possible on 23-24 Sep with any significant flare activity after the return of old Region 2673. Data used to provide space weather services are contributed by NOAA, USAF, NASA, NSF, USGS, the International Space Environment Services and other observatories, universities, and institutions. More information is available at SWPC's Web site http://swpc.noaa.gov Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to the Product Subscription Site. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact SWPC Help.

Space Weather Outlook September 11, 2017 at 05:12AM

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA SPACE WEATHER ADVISORY OUTLOOK #17-37 2017 September 11 at 2:45 a.m. MDT (2017 September 11 0845 UTC) **** SPACE WEATHER OUTLOOK **** Summary For September 4-10 R1 (Minor) radio blackouts were observed on 04-09 September, R2 (Moderate) radio blackouts were observed on 04, 07, 08 September, and R3 (Strong) radio blackouts were observed on 06, 07, 10 September due to solar flare activity from active sunspot Region 2673. S1 (Minor) solar radiation storm levels were observed on 05-09 Sep and 10 September, S2 (Moderate) solar radiation storm levels were observed on 05-08 September and 10 September, and S3 (Strong) solar radiation storm levels were observed on 10 September due to significant flare activity from Region 2673. G1 (Minor) geomagnetic storm levels were observed on 04 September due to coronal hole high speed stream activity. G4 (Severe) geomagnetic storm levels were observed on 07 September while G1-G4 (Minor-Severe) storm levels were observed on 08 September due to a combination of activity from the arrival of the 04 and 06 September coronal mass ejections. Outlook For September 11-17 R1-R2 (Minor-Moderate) radio blackouts are expected on 11 September due to the potential for significant flare activity from Region 2673 as it rotates further around the west limb. S3 (Strong) solar radiation storm levels are expected to continue on 11 September and slowly decrease below S1 (Minor) storm levels by 15 September. G1 (Minor) geomagnetic storm levels are likely from 13-16 September with G2 (Moderate) levels likely on 13 September due to recurrent coronal hole high speed stream activity. Data used to provide space weather services are contributed by NOAA, USAF, NASA, NSF, USGS, the International Space Environment Services and other observatories, universities, and institutions. More information is available at SWPC's Web site http://swpc.noaa.gov Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to the Product Subscription Site. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact SWPC Help.

Space Weather Outlook September 04, 2017 at 02:02AM

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA SPACE WEATHER ADVISORY OUTLOOK #17-36 2017 September 3 at 11:52 p.m. MDT (2017 September 4 0552 UTC) **** SPACE WEATHER OUTLOOK **** Summary For August 28-September 3 G1 (Minor) geomagnetic storm levels were observed on 31 August and 02 September due to coronal hole high speed stream effects. Outlook For September 4-10 There is a chance for R1-R2 (Minor-Moderate) radio blackouts for 04-10 September due to potential significant flare activity from active sunspot Regions 2673 and 2674. Data used to provide space weather services are contributed by NOAA, USAF, NASA, NSF, USGS, the International Space Environment Services and other observatories, universities, and institutions. More information is available at SWPC's Web site http://swpc.noaa.gov Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to the Product Subscription Site. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact SWPC Help.