It's a warning for impacts on Satellites and such from a solar flare.
Space Weather Message Code: WARK07 Serial Number: 41 Issue Time: 2013 Jun 29 0515 UTC
WARNING: Geomagnetic K-index of 7 or greater expected Valid From: 2013 Jun 29 0515 UTC Valid To: 2013 Jun 29 1000 UTC Warning Condition: Onset NOAA Scale: G3 or greater - Strong to Extreme
NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/NOAAscales
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
From: californiadisasters@yahoogroups.com [mailto:californiadisasters@yahoogroups.com] On Behalf Of Joann Lavis
Sent: Friday, June 28, 2013 10:59 PM
To: kim california disasters
Subject: RE: [californiadisasters] Jet Stream Blamed For Weather Extremes
can anyone tell me what this means, - WARNING: Geomagnetic K-index of 7/greater expected From: Jun 29 0515 UTC To: Jun 29 1000 Onset NOAA Scale: G3 or greater-Strong to Extreme saw this on calfirenewsblog
To: californiadisasters@yahoogroups.com
From: kimnoyes@gmail.com
Date: Fri, 28 Jun 2013 22:04:00 -0700
Subject: [californiadisasters] Jet Stream Blamed For Weather Extremes
Jet stream blamed for weather extremes
Associated Press
Updated 10:04 pm, Tuesday, June 25, 2013
Washington --
Lately, the jet stream isn't playing by the rules. Scientists say that big river of air high above Earth, which dictates much of the weather for the Northern Hemisphere, has been unusually erratic the past few years.
They blame it for everything from snowstorms in May to the path of Superstorm Sandy.
Last week, it was responsible for downpours that led to historic floods in Alberta, as well as record-breaking heat in parts of Alaska, experts say. McGrath, Alaska, hit 94. Just a few weeks earlier, the same spot was 15 degrees.
The current heat wave in the Northeast is also linked. "While it's not unusual to have a heat wave in the East in June, it is part of the anomalous jet stream pattern that was responsible for the flooding in Alberta," Rutgers University climate scientist Jennifer Francis said Tuesday in an e-mail.
The jet stream usually rushes rapidly from west to east in a mostly straight direction. But lately it's been wobbling and weaving like a drunken driver, wreaking havoc as it goes. The more the jet stream undulates north and south, the more changeable and extreme the weather.
It's a relatively new phenomenon that scientists are still trying to understand. Some say it's related to global warming; others say it's not.
In May, there was upside-down weather: Early California wildfires fueled by heat contrasted with more than a foot of snow in Minnesota. Seattle was the hottest spot in the nation one day, and Maine and Edmonton, Alberta, were warmer than Miami and Phoenix.
Francis is in the camp that thinks climate change is probably playing a role in this. Other scientists don't make the sea ice and global warming connections that Francis does. They see random weather or long-term cycles at work. Even more scientists are taking a wait-and-see approach about this latest theory. It's far from a scientific consensus, but it is something that is being studied more often and getting a lot of scientific buzz.
"There are some viable hypotheses," Stanford University climate scientist Noah Diffenbaugh said. "We're going to need more evidence to fully test those hypotheses."
Source: http://www.sfgate.com/science/article/Jet-stream-blamed-for-weather-extremes-4622483.php
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