Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA SPACE WEATHER ADVISORY BULLETIN #11- 1 2011 August 04 at 10:58 a.m. MDT (2011 August 04 1658 UTC) **** GEOMAGNETIC STORM EXPECTED **** Space Weather Bulletin August 4, 2011 NOAA Region 1261, very active over the past few days, produced the third of a sequence of Coronal Mass Ejections (CMEs) and Solar Radio Blackout Events early today. The net effect of that activity is convergent CMEs expected to ...Continue Reading

Space Weather News for August 4, 2011 http://spaceweather.com SOLAR ACTIVITY: For the third day in a row, sunspot 1261 has unleashed a significant M-class solar flare. The latest blast at 0357 UT on August 4th registered M9.3 on the Richter Scale of Flares, almost crossing the threshold into X-territory (X-flares are the most powerful kind). Also, at least two coronal mass ejections are en route to Earth, and they could provoke mild to moderate geomagnetic storms when they arrive on August 4th through 6th. High-lati ...Continue Reading

:Product: Solar Region Summary :Issued: 2011 Aug 04 0030 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Solar Region Summary SRS Number 216 Issued at 0030Z on 04 Aug 2011 Report compiled from data received at SWO on 03 Aug I. Regions with Sunspots. Locations Valid at 03/2400Z Nmbr Location Lo Area Z LL NN Mag Type 1260 N18W62 358 0200 Cso 10 05 Beta 1261 N16W37 333 0300 Dki 09 15 Beta-Gamma 1263 N17 ...Continue Reading

Space Weather News for August 3, 2011 http://spaceweather.com MINOR STORM WARNING: On August 2nd, the sun hurled a cloud of plasma (CME) toward Earth when magnetic fields above sunspot 1261 erupted. Analysts expect the CME to arrive during the early hours of August 5th, possibly sparking geomagnetic storms around the poles. This is not a big event; the eruption that propelled the cloud in our direction registered only "M1" (for medium) on the Richter Scale of Flares. Nevertheless, sky watchers at high lati ...Continue Reading

:Product: Solar Region Summary :Issued: 2011 Aug 03 0030 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Solar Region Summary SRS Number 215 Issued at 0030Z on 03 Aug 2011 Report compiled from data received at SWO on 02 Aug I. Regions with Sunspots. Locations Valid at 02/2400Z Nmbr Location Lo Area Z LL NN Mag Type 1260 N19W49 358 0300 Eho 12 07 Beta 1261 N15W21 330 0390 Fkc 16 25 Beta-Gamma-Delta 12 ...Continue Reading

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA SPACE WEATHER ADVISORY OUTLOOK #11- 35 2011 August 02 at 02:42 p.m. MDT (2011 August 02 2042 UTC) **** SPACE WEATHER OUTLOOK **** Summary For July 25-31 Category R1 (Minor) and R2 (Moderate) radio blackouts were observed on 27 and 30 July respectively from Region 1261. Outlook For August 3-9 Isolated R1 (Minor) radio blackouts are expected until Region 1261 rotates around the limb on 07 August. A ca ...Continue Reading

:Product: Solar Region Summary :Issued: 2011 Aug 02 0030 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Solar Region Summary SRS Number 214 Issued at 0030Z on 02 Aug 2011 Report compiled from data received at SWO on 01 Aug I. Regions with Sunspots. Locations Valid at 01/2400Z Nmbr Location Lo Area Z LL NN Mag Type 1260 N18W36 358 0300 Eho 12 16 Beta 1261 N16W08 330 0350 Fkc 16 50 Beta-Gamma-Delta 12 ...Continue Reading

:Product: Solar Region Summary :Issued: 2011 Aug 01 0030 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Solar Region Summary SRS Number 213 Issued at 0030Z on 01 Aug 2011 Report compiled from data received at SWO on 31 Jul I. Regions with Sunspots. Locations Valid at 31/2400Z Nmbr Location Lo Area Z LL NN Mag Type 1260 N19W22 358 0300 Ehi 12 21 Beta-Gamma 1261 N16E05 330 0350 Eki 11 35 Beta-Gamma-Del ...Continue Reading

:Product: Solar Region Summary :Issued: 2011 Jul 31 0030 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Solar Region Summary SRS Number 212 Issued at 0030Z on 31 Jul 2011 Report compiled from data received at SWO on 30 Jul I. Regions with Sunspots. Locations Valid at 30/2400Z Nmbr Location Lo Area Z LL NN Mag Type 1260 N19W09 358 0330 Ehi 12 12 Beta 1261 N17E22 327 0350 Dkc 10 23 Beta-Gamma-Delta 12 ...Continue Reading

Space Weather News for July 30, 2011 http://spaceweather.com Solar and geomagnetic activity continues to intensify on July 30th. The day began with an almost-X class solar flare from big sunspot 1261. This was followed by an unrelated geomagnetic storm (magnitude Kp=5) prompted by a fluctuation in the solar wind. At the time this alert is being issued (July 30th @ 2200 UT) the geomagnetic storm is still underway. High-latitude sky watchers, especially in the southern hemisphere where skies are winter-dark, should b ...Continue Reading