<TITLE>Surface maps</TITLE>

<H1>Update Interval</H1>
These maps are updated at :14, :29, :44, and :59 after each hour. The maps may be delayed by up to one minute depending on server load.

<H1>Current Data Sources</H1>
<LI>Standard FAA/NWS/DOD METAR
<LI>Oklahoma mesonet
<LI>Texas mesonet
<LI>Buoys
<LI>Gulf of Mexico SAWRS 
<LI>Selected RAWS
<LI>Selected DOT
<LI>Selected APRS
<LI>Standard Mexico METAR
<P>
See the <A HREF="sfstns.tbl">sfstns.tbl</A> file for details -- all entries following and including "MOBILE 64S BUOY" are my additions.

<H1>Station plotting example</H1>
<TABLE>
<TR>
<TD>
<img src="plot.png">
</TD>
<TD>
	<TABLE border=2 cellpadding=2 cellspacing=2 bgcolor="#999999">
	<TR>
	<TD>Temperature &deg;F <font color="#000000"> &nbsp;&nbsp;77</font></TD> 
	<TD>Wind &nbsp;<font color="#777700">|</font> direction<br></TD>
	<TD><font color="#00FFFF">027</font> &nbsp;&nbsp;&nbsp;&nbsp;Sea level pressure in 0.1 mb <br>
	&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;leading 9/1 omitted
	</TR>
	<TR>
	<TD>Visibility miles <font color="#FF0000">&nbsp;&nbsp;4</font><br> 
            Weather symbol <font color="#0000FF">&nbsp;&nbsp;&nbsp;R</font> </TD>
	<TD>Sky &nbsp;&nbsp;<font color="#FF00FF">O</font> coverage
	<TD><font color="#FFFF00">-21</font> &nbsp;&nbsp;&nbsp;&nbsp;3 hr pressure change in 0.1 mb<br>
	    &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;<font color="#FF7700">L</font> &nbsp;3 hr pressure tendency</TD>
	</TR>
	<TR>
	<TD>Dewpoint &deg;F <font color="#00FF00">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;71</font> </TD>
	<TD>Wind <font color="#770077">--</font> speed (kts)<br></TD>
	<TD><font color="#44FF99">39</font> &nbsp;&nbsp;&nbsp;&nbsp; Wind gust (kts)</TD>
	</TR>
	</TABLE>
</TD>
</TR>
</TABLE>

<H1>Mesoscale surface maps</H1>
<A HREF="../sfcmeso">11x17 postscript plots</A> of all available observations centered on Oklahoma.
<H1>Synoptic scale surface maps</H1>
<A HREF="../sfc">8.5x11 postscript plots</A> of observations covering all of the central US.

<P>
<HR>
Maintained by Kevin Scharfenberg. Last updated 5 June 2004.
