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  1. #1
    Sam Wormley's Avatar
    Sam Wormley Guest

    Default AURORA WATCH: Auroras are possible tonight



    Ref: http://spaceweather.com/

    AURORA WATCH: Auroras are possible tonight because the
    interplanetary magnetic field (IMF) near Earth has turned sharply
    south--a condition that favors geomagnetic activity. If you live at
    high latitudes, be alert for colorful lghts in the sky.

    SOLAR ACTIVITY: Sunspot 649 has been very active, producing five
    X-class solar flares since July 15th. The most powerful so far was
    an X3-class flare at 1355 UT (6:55 a.m. PDT) on July 16th.
    Remarkably, none of these blasts has hurled a coronal mass ejection
    (CME) directly toward Earth, so geomagnetic activity might remain
    low despite high levels of solar activity.


    Ref: http://www.sec.noaa.gov/ftpdir/forecasts/ALTS.txt

    :Product: SEC Space Weather Alerts ALTS.txt
    :Issued: 2004 Jul 17 0030 UTC
    # Prepared by the US Dept. of Commerce, NOAA, Space Environment Center
    # See http://sec.noaa.gov/alerts/ for description and other displays
    # Send comments and suggestions to SWOalerts@noaa.gov
    #
    # SEC Space Weather Alerts Issued in the last 24 hours
    #---------------------------------------------------------------------

    Space Weather Message Code: WARK05
    Serial Number: 425
    Issue Time: 2004 Jul 17 0024 UTC

    WARNING: Geomagnetic K-index of 5 expected
    Valid From: 2004 Jul 17 0025 UTC
    Valid To: 2004 Jul 17 1500 UTC
    Warning Condition: Onset

    #-------------------------------------------------
    Space Weather Message Code: ALTK04
    Serial Number: 925
    Issue Time: 2004 Jul 16 2330 UTC

    ALERT: Geomagnetic K-index of 4
    Threshold Reached: 2004 Jul 16 2328 UTC
    Synoptic Period: 2100-2400 UTC
    Active Warning: Yes

    #-------------------------------------------------
    Space Weather Message Code: WARK04
    Serial Number: 925
    Issue Time: 2004 Jul 16 2245 UTC

    WARNING: Geomagnetic K-index of 4 expected
    Valid From: 2004 Jul 16 2245 UTC
    Valid To: 2004 Jul 17 0600 UTC
    Warning Condition: Onset

    #-------------------------------------------------
    Space Weather Message Code: SUMSUD
    Serial Number: 46
    Issue Time: 2004 Jul 16 2203 UTC

    SUMMARY: Geomagnetic Sudden Impulse
    Observed: 2004 Jul 16 2158 UTC
    Deviation: 14 nT
    Station: Boulder

    #-------------------------------------------------
    Space Weather Message Code: WARSUD
    Serial Number: 36
    Issue Time: 2004 Jul 16 2127 UTC

    WARNING: Geomagnetic Sudden Impulse expected
    Valid From: 2004 Jul 16 2200 UTC
    Valid To: 2004 Jul 16 2210 UTC
    IP Shock Passage Observed: 2004 Jul 16 2107 UTC

    -Sam Wormley
    http://edu-observatory.org/eo/aurora.html

  2. #2
    atm's Avatar
    atm Guest

    Default AURORA WATCH: Auroras are possible tonight


    "Sam Wormley" <swormley1@mchsi.com> wrote in message
    news:40F87417.729ED6B8@mchsi.com...


    Saw display last night 12 AM PDT



 

 

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