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Topic: Solar Storm effects on GPS, Why is my GPS whacky today< Next Oldest | Next Newest >
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    Posted: Oct. 23 2001,11:40 pm QUOTE

For those who were unaware strong Solar Storm activity will have an effect on GPS accuracy (see http://www.sec.noaa.gov/nav/gps.html )

Not to mention some really cool effects on the sky if you are in the right area.

You may also be interested in the following info and links...


Ref: http://www.spacew.com/


                   MIDDLE LATITUDE AURORAL ACTIVITY WATCH

                   ISSUED: 09:00 UTC, 23 OCTOBER 2001

   
VALID BEGINNING AT: 17:00 UTC (1 pm EDT) ON 24 OCTOBER
VALID UNTIL: 19:00 UTC (3 pm EDT) ON 26 OCTOBER

   HIGH RISK PERIOD: 24 OCT - 25 OCTOBER (UTC DAYS)
MODERATE RISK PERIOD: 24 OCT - 26 OCTOBER

PREDICTED ACTIVITY INDICES: 14, 20, 40, 12 (23 OCT - 26 OCT)

POTENTIAL MAGNITUDE OF MIDDLE LATITUDE AURORAL ACTIVITY: MODERATE

POTENTIAL DURATION OF THIS ACTIVITY: MAIN BELT = 18 TO 24 HOURS
                                   MINOR BELT = 24 TO 36 HOURS

ESTIMATED OPTIMUM OBSERVING CONDITIONS: NEAR & AFTER LOCAL MIDNIGHT

EXPECTED LUNAR INTERFERENCE: LOW TO MODERATE

OVERALL OPPORTUNITY FOR OBSERVATIONS FROM MIDDLE LATITUDES: FAIR TO GOOD

AURORAL ACTIVITY *MAY* BE OBSERVED APPROXIMATELY NORTH OF A LINE FROM...

  OREGON TO NORTHERN UTAH TO NEBRASKA TO NORTHERN MISSOURI TO ILLINOIS TO
  INDIANA TO NORTHERN KENTUCKY TO SOUTHERN OHIO TO WEST VIRGINIA TO
  VIRGINIA.

ACTIVITY *MAY* ALSO BE OBSERVED APPROXIMATELY NORTH OF A LINE FROM...

  UNITED KINGDOM TO EXTREME NORTHERN NETHERLANDS TO NORTHERN GERMANY TO
  NORTHERN POLAND TO LITHUANIA TO LATVIA AND ESTONIA TO NORTHERN RUSSIA.
  SOUTHERN REGIONS OF NEW ZEALAND MAY ALSO BE ABLE TO SPOT PERIODS OF
  ACTIVITY.

SYNOPSIS...

    Two additional major solar flares occurred on 22 October that may have
been associated with Earthward directed coronal mass ejections. Coverage of
these events by the SOHO spacecraft was spotty at best, but sufficient data
is now available to confirm that at least one large coronal mass ejection
(possibly with a second imbedded one) is headed Earthward. Impact of this
disturbance with the Earth's magnetosphere is expected either late in the UTC
day of 24 October (afternoon hours EDT) or early in the UTC day of 25 October
(evening EDT hours of 24 October).

    This watch will remain in effect until 19:00 UTC (3 pm EDT) on 26
October. It will then be updated or allowed to expire. For updated
information, visit: http://www.spacew.com/aurora/forum.html

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