[Qcwa] Fw: ARLP021 Propagation de K7VVV

[Rick Gryder K9WED ARLHS #365]

FYI
----- Original Message ----- 
From: "W1AW Mailing List" <w1aw-list-request@p1k.arrl.org>
To: <k9wed@qsl.net>
Cc: <W1AW List:>; <W1AW.List:>; <W1AW.List:>; <@mailer.remote.arrl.org>
Sent: Friday, May 24, 2002 1:51 PM
Subject: ARLP021 Propagation de K7VVV


> SB PROP @ ARL $ARLP021
> ARLP021 Propagation de K7VVV
> 
> ZCZC AP21
> QST de W1AW  
> Propagation Forecast Bulletin 21  ARLP021
> From Tad Cook, K7VVV
> Seattle, WA  May 24, 2002
> To all radio amateurs 
> 
> SB PROP ARL ARLP021
> ARLP021 Propagation de K7VVV
> 
> Sunspot counts and solar flux reached a short-term minimum late last
> week, but both seem to be on the rise again.  Average daily sunspot
> numbers were down nearly 35 points from last week, and average solar
> flux was down eight points.  Predicted solar flux for this weekend
> is 175 for Friday and 170 for both Saturday and Sunday.  Flux values
> are expected to rise to around 190 by month's end.
> 
> Geomagnetic disturbances are the bigger news this week, with a
> geomagnetic storm on Thursday, May 23, caused by a series of three
> coronal mass ejections on the previous day.  Planetary A index was
> 54 on Thursday, and planetary K index reached seven over two 3-hour
> periods.  This means generally lousy HF radio conditions with
> enhanced absorption, especially at higher latitudes.
> 
> Several sunspot groups in view have potential for more fireworks.
> Currently the predicted A index for Friday through Sunday is 30, 15
> and 10.  The high A and K values don't look good if they persist
> during this weekend's CQ Worldwide WPX CW Contest, but if there are
> no more coronal mass ejections or flares, the bands could recover.
> As this was being written on Thursday evening the planetary K index
> had dropped to three and so had the mid-latitude K index, as
> reported by WWV.
> 
> NW7US sent along a tip for propagation watchers who have WAP enabled
> wireless devices.  Point your WAP device toward
> http://wap.hfradio.org/ .  A normal web browser will get redirected
> to http://hfradio.org/ , but a cell phone will see WML instead of
> HTML providing solar and geomagnetic information.
> 
> KB6HCN recently sent along a URL to a nice image of the sun.  See
> http://antwrp.gsfc.nasa.gov/apod/ap020508.html , and for a larger
> image click on the photo and go to
> http://antwrp.gsfc.nasa.gov/apod/image/0205/sun2_trace_big.jpg .
> 
> Sunspot numbers for May 16 through 22 were 120, 134, 140, 155, 171,
> 185, and 217, with a mean of 160.3. 10.7 cm flux was 158.4, 157.1,
> 163, 170.9, 171.3, 185.9, and 181.1, with a mean of 169.7.
> Estimated planetary A indices were 12, 10, 15, 18, 14, 14, and 14,
> with a mean of 13.9.
> NNNN
> /EX
>