Depending on where you are located the band was either really poor, really good, or somewhere in between. Here in Texas, the band was probably somewhere in between but leaning more towards a pretty good night. In general, S/N levels may have been down some from recent sessions but the wild QSB swings may erroneously give the impression that the band was worse than it was. In many cases, my reports varied as much as 20 db from one transmit cycle to the next. Spot totals were still very high and the spot distribution looks like any other night. John, WA3ETD / WG2XKA, reports a strong high latitude transcontinental path with two-way reports from John, VE7BDQ and Larry, W7IUV / WH2XGP. He also reported 1000+ spots for the session and first time reports from W0AY in Montana, and AL7RF in Nevada. On the other hand, Doug, K4LY / WH2XZO, reports only fair conditions for the second night in a row. The WH2XXP to WH2XGP band quality ratio was 82 to 0 for this session. Larry, W7IUV / WH2XGP, indicates poor conditions overall for the session in Washington state.
The geomagnetic field was generally quiet. The Bz was variable. Solar wind exceeded 500 km/s.
WSPR activity appears to have been very high but I did not get an official count for the session from the WSPRnet activity page for this session. There were no new stations observed through this session but many stations returned that recently began submitting reception reports. Daytime activity was strong once again. Reports of WG2XIQ at WG2XJM / NO3M in western Pennsylvania were consistent throughout the day, with most reports well within JT9 QSO range. This is the time of year when cross-country QSO’s at solar noon on 630-meter have historically been commonplace. Daytime conditions were also strong on 2200-meters. Jim, W5EST, has provided North American maps with the WSPR details for both bands:
Individual daytime achievements on 630-meters follow:
I was also active through the daytime period but through a data gathering error, there is no data for WG2XIQ.
The regional and continental WSPR breakdowns follow:
There were no trans-Atlantic or trans-African reports for this session. Michel, FR5ZX, was present but there were no reports found for him in the database.
Eden, ZF1EJ, has a pretty good session, with Larry, W7IUV / WH2XGP, as best DX.
In Alaska, Laurence, KL7L / WE2XPQ, had a typical session and seemed to do pretty well in spite of elevated solar wind. I don’t recall reports for Laurence by AL7RF in the past so its possible that this is his first time reporting Alaska. KL7L was designated as receive only through the session.
In the Pacific, Merv, K9FD/KH6 / WH2XCR, had a nice session, with reports from JA1NQI-1 and JH1INM, as well as KL7L and the mainland US. Dave, WB0VAK reported Merv for what I believe to be the first time. Signals once again stopped west of the Mississippi River. The path to VK appears to be closed at the moment.
Additional anecdotes, statistics, or reports:
Jim, W5EST, provided the following:
“The 630/2200 meter bands confront us with mysteries. But it’s no mystery that lightning static from storms in any direction within about 500 kilometers of the RX station may reduce weak signal distance reception. I scope these 24-hour up-to-the-hour lightning movies:
This time of year, local rain and snow may increase the noise level without a lightning accompaniment. USA national Doppler radar helps identify storm distributions: http://radar.weather.gov/ridge/Conus/
Accurate sunrise SR and sunset SS times for stations predict intervals of common darkness between the stations. http://www.timeanddate.com/astronomy/usa Propagation regimes are changing, which varies SNRs more rapidly around SR/SS. A world time map helps me convert local time to UTC. http://www.worldtimezone.com/ A grayline map seasonally shows which end of a nearly N/S path gets its SR or SS transition first. http://dx.qsl.net/propagation/greyline.html
Space weather and geomagnetic field maps offer tantalizing 630m propagation clues:
http://solarham.net/ Click each visual for more. Kp, Ap, Bz, CME, solar wind, Au, etc. http://www.swpc.noaa.gov/products/station-k-and-indices K and Ap GMF indices.
http://wdc.kugi.kyoto-u.ac.jp/dst_realtime/201511/index.html Kyoto Dst real-time.
http://www.tesis.lebedev.ru/en/sun_flares.html?m=1&d=8&y=2016 Solar flares C, M, X. http://www.spacew.com/www/fof2.html Critical freq contours globally.
Do you frequently use other web sites to ponder or predict LF/MF propagation and reception? Please offer any such links for posting to this blog!”
Additions, corrections, clarifications, etc? Send me a message on the Contact page!