103 lines
3.9 KiB
HTML
103 lines
3.9 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta content="text/html; charset=ISO-8859-1"
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http-equiv="content-type">
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<title>HazardRecovery Procedure</title>
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</head>
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<body>
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<h1 style="text-align: center;">HazardRecovery</h1>
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<div style="text-align: center;">
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<h2>Procedure to re-initialize your Hazard grid based on current events</h2>
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March 8, 20012<br>
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<br>
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<div style="text-align: left;"><br>
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<a href="#methodology">Methodology</a><br>
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<a href="#howitworks">How It Works</a><br>
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<hr style="width: 100%; height: 2px;">
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<h2><a name="methodology"></a>Methodology</h2>
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</div>
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<br>
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</div>
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<br>
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<big><big><span style="color: rgb(255, 0, 0);"><span
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style="font-style: italic;">Hazard recovery should only be used in
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case your</span><span style="font-style: italic;"> entire hazard grid
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is lost or mangled
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by so many changes </span><span style="font-style: italic;">that you
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cannot recover. Attempt to
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restore from your </span><span style="font-style: italic;">official
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database first, if it's
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current.</span><br>
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<br>
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<small><span style="color: rgb(0, 0, 0);">The HazardRecovery procedure
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will analyze the <a href="VTEC.html">VTEC</a> active table to
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determine what hazards are in effect for your forecast area. It will
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then convert
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the hazards found in this table to gridded format in your hazard grid.
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When
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restored all hazards will be depicted by zone or county only.<br>
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<br>
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To run the hazard recover procedure, select the <span
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style="font-weight: bold; font-style: italic;">Hazards menu</span>,
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the select <span style="font-weight: bold; font-style: italic;">HazardRecovery</span>.
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<br>
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<br>
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<img style="width: 299px; height: 316px;"
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alt="HazardRecovery Menu Image" src="images/HazardRecoveryMenu.png"><br>
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</span></small><br>
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<small><span style="color: rgb(0, 0, 0);">After selecting
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HazardRecovery, a warning dialog will display.<br>
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<br>
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<img style="width: 706px; height: 96px;"
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alt="Hazard Recovery Warning Image"
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src="images/HazardRecoveryWarning.png"><br>
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</span></small><br>
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<small><span style="color: rgb(0, 0, 0);">Upon selecting <span
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style="font-weight: bold; font-style: italic;">Ok</span>, your entire
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Hazards grid will be deleted, and replaced with the current
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hazards found in the active table.<br>
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</span></small></span></big></big><br>
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<hr style="width: 100%; height: 2px;">
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<h2><a name="howitworks"></a>How It Works</h2>
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The Hazard Recovery tool calculates the current set of Hazards in
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effect (i.e., issued). It uses the following algorithm:<br>
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<ul>
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<li>The VTEC active table is retrieved from EDEX.</li>
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<li>The table is filtered and actions that are CAN, UPG, and EXP are
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removed.</li>
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<li>Records that represent current events are kept. Current
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events are obtained from three different sources (within the VTEC
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table):</li>
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<ul>
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<li>Convective Watches (TO.A, SV.A) from "my" site from "my" WCN
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are considered the current issued convective watches. We ignore
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the WOU and other information from SPC. Convective watches from
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"my" site but from a different product are ignored.<br>
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</li>
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<li>Any records from "my" site are considered, both tropical and
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non-tropical.<br>
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</li>
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<li>Tropical Cyclone Watches/Warnings (HU, TY, TR) from TPC (which
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only contain coastal zones) are added.<br>
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</li>
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</ul>
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</ul>
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<br>
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The procedure then removes all Hazard grids, and then creates the
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hazards based on the calculated active events and puts them into the
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Hazards grid.<br>
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<br>
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Note: The HazardRecovery tool only recovers events that are compatible
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with the current GFE mode. If the GFE mode is operational, then
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only
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"X", "O", and "E" VTEC events will be considered. If the GFE mode
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is "TEST", then only "T" VTEC events will be considered.<br>
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<br>
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Note: HazardRecovery has been updated for the 2007 tropical season due
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to changes in the TCV product. The TCV product will now
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only contain coastal zones, thus the HazardRecovery procedure now looks
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at tropical events issued by your site.<br>
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</body>
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</html>
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