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|    ARLP045 Propagation de K7RA    |
|    04 Nov 16 18:39:06    |
      SB PROP @ ARL $ARLP045       ARLP045 Propagation de K7RA              ZCZC AP45       QST de W1AW       Propagation Forecast Bulletin 45 ARLP045       > From Tad Cook, K7RA       Seattle, WA November 4, 2016       To all radio amateurs              SB PROP ARL ARLP045       ARLP045 Propagation de K7RA              At 2347 UTC on November 3 Australia's Space Weather Services issued a       geomagnetic disturbance warning: "Expect Unsettled to Active conditions with       periods of Minor Storm levels in the Australian region for the next UT day, 4       November, if a small coronal hole in the Southern hemisphere will become       geoeffective."              But as of November 3, the prediction from NOAA/USAF for planetary A index for       November 4 and 5 is only 10 and 8.              Over the past reporting week (October 27 through November 2) we saw two days       with no sunspots, October 28 and November 2. Prior to the past week, in recent       memory only October 1 had no sunspots either. Average daily sunspot number for       the week was 9.1, down from 18.7 over the previous seven days.              Average daily solar flux rose, but only slightly from 76.9 to 77.5.              Geomagnetic indicators were slightly lower, with average daily planetary A       index declining from 20.3 to 18.1, and mid-latitude A index from 16.7 to 13.4.              Predicted solar flux is 78 on November 4-7, 75 on November 8-11, then 80, 78       and 75 on November 12-14, 73 on November 15-16, 78 on November 17-18, 77 and       75 on November 19-20, 78 on November 21-22, 80 on November 23-25, 78 on       November 26, 80 on November 27-29, 78 on November 30, 82 on December 1-3, 80       on December 4-5, 78 on December 6-7, and 80 on December 8-9.              Predicted planetary A index is 10 and 8 on November 4-5, 5 on November 6-10,       then 10, 15, 18, 10 and 8 on November 11-15, 5 on November 16-18, then 8, 15,       54, 42 and 24 on November 19-23, then 18, 22, 18, 15 and 12 on November 24-28,       then 8 on November 29 through December 1, then 5 and 8 on December 2-3, and 5       on December 4-7.              Looking at our three-month moving average of sunspot numbers, the average       sunspot value for August 1 through October 31 was 39. Over the same       three-month period in 2015 the average was 64.5, and in 2014 it was 108.4.                            Petr Kolman, OK1MGW of the Czech Propagation Interest Group sent us this on       October 3.              "Geomagnetic activity forecast for the period November 4-November 30, 2016              "Geomagnetic field will be:       Quiet on November 7-8       Mostly quiet on November 4, (9-10), 15-18, 29-30       Quiet to unsettled on November 5-6, 11, 14, 19, 27-28       Quiet to active on November 12-13, 20, 24       Active to disturbed on November 21-23, 25-26              "Amplifications of the solar wind from coronal holes are expected: on November       5-6, 12-13, 20-26              "Remarks: - Parenthesis means lower probability of activity enhancement."                            Richard Dillman, W6AWO of Point Reyes Station, California saw the reference to       the ARRL National Parks on the Air activity by N8II in last week's bulletin,       and wrote:              "I hope/assume you have bagged K6KPH, one of the only permanent stations in a       national park (Point Reyes National Seashore). With separate 1.5kW       transmitters and gain antenna for each frequency we       get out pretty well - propagation permitting! We're on the air each Saturday       and Sunday from 1200 to about 1700 Pacific time."              Indeed, I see their weekly Saturday schedule listed under Events on the NPOTA       web site: https://npota.arrl.org/nps-events.php                            Jimmy Mahuron, K9JWJ, submitted this reference to construction of a VLF       receiver for detecting Sudden Ionospheric Disturbances:              https://www.aavso.org/improved-gyrator-tuned-vlf-receiver                            Regular contributor David Moore sent this about recent aurora:              https://shar.es/1I0Ivj                            Richard Ferry, K2KA of Westford, Massachusetts sent this a week ago, just       after I submitted last week's bulletin to Newington, on October 28:              "6 Meters has been pretty quiet here, brief Es opening on October 25 at 1754Z       one hour. Worked 5 stations in GA and one AL Es. Been hearing some activity       on 50145 Meteors.              "There was a brief Au opening on the October 26 around 2200Z, called CQ with       beam to the north but no takers."                            Ran across this from Discover Magazine about solar seismology:              http://bit.ly/2f7cvGU                            Jeff, N8II reports again this week from West Virginia, this time about last       week's CQ World-Wide SSB DX Contest.              "Starting Monday before the contest, the K index was 4 or higher almost all       week and storm levels moderate w/G3 or strong(?) w/G4 were common. Despite       this, paths from east through south to west were not that bad up to 15 meters.       I was able to work a loud JE1 in Japan on 20M SSB one night and JA1NUT on 20       CW another both around 2220Z and small portable/mobile stations from National       Parks were mostly near normal signal levels, very workable. Thursday seemed to       be the worst day and Friday 2nd worst.              "The forecast for the CQ WW DX contest was for disturbed conditions, and boy       did we get that and more! A week before the CQWW last Sunday 15 M was wide       open to every corner of Europe at 1330Z, but       absolutely no northern EU or even zone 16 worked in the WW. The zones missed       on all bands were 18 (heard RW0A, Russia on 40), 22, 23, 26, 27, 28, 29       (nothing heard from Australia on 20 LP and looked),32 (only heard ZM1A, New       Zealand calling a station), 34, and 37 (worst ever missed list with serious       effort). My best/biggest surprise DX QSO was VR2, Hong Kong on 40 M over the       south magnetic pole after sunrise.              "The other big surprise was EU on 10 M from 1519-1553Z on Sunday working       Spain, Portugal, France, and Balearic Is. Also worked on 10 were Canary Is.       (many), Morocco, South Africa, Cape Verde Is.,       Senegal, Ceuta, and Ascension Is. 10 never seemed to open west farther than       Mexico, no Hawaii. Queensland, Australia was worked 3 times around 21Z on 15       M. Even 20 never opened well to northern EU; Poland and Belarus had deep polar       flutter on 20 Sunday morning, but I made the QSOs. The low bands were pretty       much a disaster with high absorption. Everything past zone 33 in NW Africa was       weak on 40 both Saturday and Sunday evenings. I did work a VK4, Australia on       both 40 and 75 M, and T32AZ on Christmas I. (south of Hawaii) 75 M. There       were thousands of Russians active, and I worked none at all in my 24 hours of       operating except RW0CN on 20 M around 22Z Saturday on the Kamchatka peninsula       near Alaska! Alaska was worked around 20Z on 20M only. UP2L, a big station in       Kazakhstan saved me from missing zone 17 on 20M around 1230Z Sunday.              "There were some pluses against the obvious minuses. Sporadic-E opened 10       meters to almost all of the Caribbean early Saturday morning with S9+ signals.       At the same time there seemed to be Es from central to west EU on 15 (stations       running at very high rates). There was also strong auroral Es Saturday evening       to the north on 20/40 with booming VE2s and 3s, but no big over the pole       opening. I did work about 6-8 Japanese on 20 with weak signals then as well as       zone 19. It seemed like Puerto Rico/Virgin Is. was in a sweet spot for       propagation and they were well represented with activity. Propagation to the       south did seem enhanced at times especially on 10 M. From my perspective, the       most under represented country was New Zealand (no QSOs, worked a passel in       WPX CW), and the biggest turnout was Chile with an explosion of new calls on       10 and 15 Sunday afternoon/evening. The Canary Is. were also out in big       numbers. Thank goodness there were many Spanish stations active, but turnout       from France and Italy did not seem quite up to normal.              "Most DX operators did a very good job under challenging conditions; 20 was       absolutely jammed with south EU most of Sunday as was 40 at the start. I       missed many northern/eastern European countries that I normally always get on       20 and 15 meters. On 20 I worked only one station each from Denmark, Sweden       (barely), and Norway, and two from Finland, no Aland Islands. Many       Caribbean/Central America/South America stations were worked by me on all 3       higher bands as there was less to work in Europe, and many other NA stations       were looking south."              Thanks, Jeff!                     In closing, the ARRL CW Sweepstakes is this weekend. See http://       ww.arrl.org/sweepstakes for more information.              If you would like to make a comment or have a tip for our readers, email the       author at k7ra@arrl.net.              For more information concerning radio propagation, see the ARRL Technical       Information Service web page at, http://arrl.org/propagation-of-rf-signals.       For an explanation of the numbers used in this bulletin, see htt       ://arrl.org/the-sun-the-earth-the-ionosphere. An archive of past propagation       bulletins is at http://arrl.org/w1aw-bulletins-archive-propagation. More good       information and tutorials on propagation are at http://k9la.us/.              Monthly propagation charts between four USA regions and twelve overseas       locations are at http://arrl.org/propagation.              Instructions for starting or ending email distribution of ARRL bulletins are       at http://arrl.org/bulletins.              Sunspot numbers for October 27 through November 2 were 12, 0, 16, 12, 12, 12,       and 0, with a mean of 9.1. 10.7 cm flux was 78.9, 79.2, 79.1, 76.2, 76.7,       76.5, and 76, with a mean of 77.5. Estimated       planetary A indices were 28, 17, 27, 18, 11, 11, and 15, with a mean of 18.1.       Estimated mid-latitude A indices were 18, 16, 18, 13, 8, 9, and 12, with a       mean of 13.4.              NNNN       /EX              )\/(ark              Always Mount a Scratch Monkey       Do you manage your own servers? If you are not running an IDS/IPS yer doin' it       wrong...       ... I don't backup, since nothing has ever gone wrV..       ---        * Origin: (1:3634/12.73)    |
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