<xsd:element minOccurs="0" maxOccurs="unbounded" name="hazard" nillable="true">
    <xsd:complexType>
        <xsd:sequence>
            <xsd:element minOccurs="0" maxOccurs="1" name="hazardTextURL" nillable="true" type="xsd:anyURI" />
            <xsd:element minOccurs="0" maxOccurs="1" name="hazardIcon" nillable="true" type="xsd:anyURI" />
        </xsd:sequence>
        <xsd:attribute name="hazardCode" type="xsd:string" use="required" />
        <xsd:attribute name="phenomena" use="required">
            <xsd:simpleType>
                <xsd:restriction base="xsd:string">
                    <xsd:enumeration value="Ashfall" />
                    <xsd:enumeration value="Air Quality" />
                    <xsd:enumeration value="Air Stagnation" />
                    <xsd:enumeration value="Blowing Snow" />
                    <xsd:enumeration value="Brisk Wind" />
                    <xsd:enumeration value="Blizzard" />
                    <xsd:enumeration value="Coastal Flood" />
                    <xsd:enumeration value="Dust Storm" />
                    <xsd:enumeration value="Blowing Dust" />
                    <xsd:enumeration value="Excessive Cold" />
                    <xsd:enumeration value="Excessive Heat" />
                    <xsd:enumeration value="Excessive Wind" />
                    <xsd:enumeration value="Areal Flood" />
                    <xsd:enumeration value="Flash Flood" />
                    <xsd:enumeration value="Dense Fog" />
                    <xsd:enumeration value="Flood" />
                    <xsd:enumeration value="Frost" />
                    <xsd:enumeration value="Red Flag" />
                    <xsd:enumeration value="Fire Weather" />
                    <xsd:enumeration value="Freeze" />
                    <xsd:enumeration value="Gale" />
                    <xsd:enumeration value="Hurricane Force Wind" />
                    <xsd:enumeration value="Hurricane Wind" />
                    <xsd:enumeration value="Heavy Snow" />
                    <xsd:enumeration value="Heat" />
                    <xsd:enumeration value="Hurricane" />
                    <xsd:enumeration value="High Wind" />
                    <xsd:enumeration value="Hard Freeze" />
                    <xsd:enumeration value="Sleet" />
                    <xsd:enumeration value="Ice Storm" />
                    <xsd:enumeration value="Lake Effect Snow and Blowing Snow" />
                    <xsd:enumeration value="Lake Effect Snow" />
                    <xsd:enumeration value="Low Water" />
                    <xsd:enumeration value="Lakeshore Flood" />
                    <xsd:enumeration value="Lake Wind" />
                    <xsd:enumeration value="Marine" />
                    <xsd:enumeration value="Special Marine" />
                    <xsd:enumeration value="Small Craft, for Rough Bar" />
                    <xsd:enumeration value="Snow and Blowing Snow" />
                    <xsd:enumeration value="Small Craft" />
                    <xsd:enumeration value="Hazardous Seas" />
                    <xsd:enumeration value="Small Craft, for Winds" />
                    <xsd:enumeration value="Dense Smoke" />
                    <xsd:enumeration value="Snow" />
                    <xsd:enumeration value="Storm" />
                    <xsd:enumeration value="High Surf" />
                    <xsd:enumeration value="Severe Thunderstorm" />
                    <xsd:enumeration value="Small Craft, for Hazardous Seas" />
                    <xsd:enumeration value="Tropical Storm Wind" />
                    <xsd:enumeration value="Tornado" />
                    <xsd:enumeration value="Tropical Storm" />
                    <xsd:enumeration value="Tsunami" />
                    <xsd:enumeration value="Typhoon" />
                    <xsd:enumeration value="Freezing Spray" />
                    <xsd:enumeration value="Wind Chill" />
                    <xsd:enumeration value="Wind" />
                    <xsd:enumeration value="Winter Storm" />
                    <xsd:enumeration value="Winter Weather" />
                    <xsd:enumeration value="Freezing Fog" />
                    <xsd:enumeration value="Freezing Rain" />
                    <xsd:enumeration value="Record High Temperature Possible" />
                    <xsd:enumeration value="Record Low Temperature Possible" />
                    <xsd:enumeration value="none" />
                </xsd:restriction>
            </xsd:simpleType>
        </xsd:attribute>
        <xsd:attribute name="significance" use="required">
            <xsd:simpleType>
                <xsd:restriction base="xsd:string">
                    <xsd:enumeration value="Watch" />
                    <xsd:enumeration value="Statement" />
                    <xsd:enumeration value="Warning" />
                    <xsd:enumeration value="Advisory" />
                    <xsd:enumeration value="none" />
                </xsd:restriction>
            </xsd:simpleType>
        </xsd:attribute>
        <xsd:attribute name="hazardType" use="required">
            <xsd:simpleType>
                <xsd:restriction base="xsd:string">
                    <xsd:enumeration value="long duration" />
                    <xsd:enumeration value="short duration" />
                </xsd:restriction>
            </xsd:simpleType>
        </xsd:attribute>
        <xsd:attribute name="eventTrackingNumber" type="xsd:integer" use="optional" />
    </xsd:complexType>
</xsd:element>