Saturday, December 27, 2008

Saturday after Christmas

We had a really great Christmas. I think we are one of the lucky parents whose kids slept in. The kids awoke around 9am. Once that happen my wife and I could hear them in the living room with excitement.
It took my wife and me forever to get organized before we handed out the presents.
The snow is almost gone. It has rained for the last 24 hours now. I was worried for awhile, we had a lot of snow on the roof and with the added warmth and rain the snow becomes very heavy.
Flood warnings have been posted throughout the state as the rain continues and the snow melts away.
My current conditions
Observation Time: Saturday, December 27 2:50 PM EST
Humidity ; 94%
Dew Point; 55°F (13°C)
Visibility; 4SM
Wind Speed; 16 MPH Gusts to 22
Wind Direction;South (180°)
Pressure;1003 mb (29.62 in)
Feels Like: 54°F (12°C) It's a Heat Wave
OvercastFog/Mist 57°F (14°C) Temp Trend:Steady
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HOW TO READ PROPAGATION NUMBERS

The A index [ LOW is GOOD ]

  • 1 to 6 is BEST
  • 7 to 9 is OK
  • 11 or more is BAD

Represents the overall geomagnetic condition of the ionosphere ("Ap" if averaged from the Kp-Index) (an average of the eight 3-hour K-Indices) ('A' referring to amplitude) over a given 24 hour period, ranging (linearly) typically from 1-100 but theoretically up to 400.

A lower A-Index generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; a low & steady Ap-Index generally suggest good propagation on the 30, 40, 60, 80, & 160 Meter Bands.

SFI index [ HIGH is GOOD ]

  • 70 NOT GOOD
  • 80 GOOD
  • 90 BETTER
  • 100+ BEST

The measure of total radio emissions from the sun at 10.7cm (2800 MHz), on a scale of 60 (no sunspots) to 300, generally corresponding to the sunspot level, but being too low in energy to cause ionization, not related to the ionization level of the Ionosphere.

Higher Solar Flux generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; Solar Flux rarely affects the 30, 40, 60, 80, & 160 Meter Bands.

K index [ LOW is GOOD ]

  • 0 or 1 is BEST
  • 2 is OK
  • 3 or more is BAD
  • 5 is VERY VERY BAD

The overall geomagnetic condition of the ionosphere ("Kp" if averaged over the planet) over the past 3 hours, measured by 13 magnetometers between 46 & 63 degrees of latitude, and ranging quasi-logarithmically from 0-9. Designed to detect solar particle radiation by its magnetic effect. A higher K-index generally means worse HF conditions.

A lower K-Index generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; a low & steady Kp-Index generally suggest good propagation on the 30, 40, 60, 80, & 160 Meter Bands.

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