Friday, August 26, 2011

North Carolina ARES SEC; Re Hurricane Irene

This was e-mailed to me~

Message from;

Tom Brown N4TAB
NC RACES Officer

ARES Update #3

Re Hurricane Irene - Not a good scenario, at all.

The track of Hurricane Irene has turned more toward the West and places significant portions of Eastern NC in a perilous situation.The trajectory, plus the forecast wind field profiles, plus the forecast storm surges portends some tough days ahead.

NC ARES/Auxcomm folks may be tasked to support our state in unprecedented ways. Attendant to the potential for communications infrastructure failures is the very real likelihood of mandatory evacuations from affected areas and that may include EM personnel as well as volunteers in our Auxcomm ranks. Once evacuated, you may not re-enter the area until Recovery is complete. That means that the folks most familiar with the affected areas may not be available to serve during the Incident and recovery. Worse is the absence of institutional knowledge, such as frequency plans in IC-205 and IC-217 formats that have been previously/recently requested. Teams sent into affected areas without that information will have to play Monte Carlo, seeking assets. It's not too late to get that accomplished - an informal email to your EB ASEC John Sprouse N4VJJ or CB ASEC Steve Misel K4WEB will be a big step in filling that need.

Timing Owing to the projected timeline for Hurricane impact upon NC, it is not likely that dangerous wind fields will have exited NC prior to sundown on Saturday. That will affect initial damage assessment and the subsequent Recovery phase of the Incident. If that process identifies significant infrastructure damage, it is likely that Strike Teams will be formed for insertion into the affected areas. Comms will be a critical part oft the Team mission and, if the State's COMMs are impaired, ARES/Auxcomm will fill that role.

Capabilities We have identified, contacted and effected initial coordination with entities that can provide record traffic communications via Winlink Transportable assets, as well as tactical communications. These will come from NC ARES, NC MARS, SC ARES, SC MARS and other groups. This is Auxcomm at it's very best.

COMMS in NC The Tar Heel Emergency Net (THEN) will be active during the Hurricane impingement period. We have real experience that, although listening to HF during a hurricane is tedious and tiring, it is essential.

This is it Folks, this is a BIG Incident. Recall/refresh your ICS concepts and be ready to plug-in. This is the reason that we, all of us, signed-up and agreed to help. Now is the time.

Please. If you don't understand or need help in putting a plan in place, contact your EC. DEC, ASEC, SD and/or single ICS trained and motivated individual can make a difference.

Final tonight. Immediately prior to the onset of Hurricane Irene's insult upon NC, the NC ARES/ NC MARS/ Auxcomm Team will communicate to all members, jointly and severally, cogent information and instructions.

Please maintain situational awareness and be cognizant of changing circumstances.

Of most importance, be safe and take care of your loved ones, first.

Tom Brown N4TAB
NC RACES Officer

My Stamp Collecting Blog

Counter Added January 1, 2011

free counters


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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