XOUS51 KWBC 252258

CAPLWX


<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<alert xmlns:ns2="http://gov.fema.ipaws.services/caprequest" xmlns="urn:oasis:names:tc:emergency:cap:1.2" xmlns:ns4="http://gov.fema.ipaws.services/IPAWS_CAPService/" xmlns:ns3="http://gov.fema.ipaws.services/capresponse">
    <identifier>NWS-IDP-PROD-4411383-3676752</identifier>
    <sender>w-nws.webmaster@noaa.gov</sender>
    <sent>2020-08-25T18:58:00-04:00</sent>
    <status>Actual</status>
    <msgType>Update</msgType>
    <scope>Public</scope>
    <code>IPAWSv1.0</code>
    <note></note>
    <references>w-nws.webmaster@noaa.gov,NWS-IDP-PROD-4411360-3676734,2020-08-25T18:46:00-04:00</references>
    <info>
        <language>en-US</language>
        <category>Met</category>
        <event>Special Marine Warning</event>
        <responseType>Avoid</responseType>
        <urgency>Immediate</urgency>
        <severity>Severe</severity>
        <certainty>Likely</certainty>
        <eventCode>
            <valueName>SAME</valueName>
            <value>NWS</value>
        </eventCode>
        <eventCode>
            <valueName>NationalWeatherService</valueName>
            <value>MAW</value>
        </eventCode>
        <effective>2020-08-25T18:58:00-04:00</effective>
        <onset>2020-08-25T18:58:00-04:00</onset>
        <expires>2020-08-25T20:45:00-04:00</expires>
        <senderName>NWS Baltimore MD/Washington DC</senderName>
        <headline>Special Marine Warning issued August 25 at 6:58PM EDT until August 25 at 8:45PM EDT by NWS Baltimore MD/Washington DC</headline>
        <description>For the following areas...
Tidal Potomac from Cobb Island MD to Smith Point VA...
Tidal Potomac from Indian Head to Cobb Island MD...
Tidal Potomac from Key Bridge to Indian Head MD...

At 658 PM EDT, severe thunderstorms were located along a line
extending from near Key Bridge to 36 nm northwest of Leesylvania
State Park, moving southeast at 25 knots.

HAZARD...Wind gusts of up to 50 knots.

SOURCE...Radar indicated.

IMPACT...Boaters could easily be thrown overboard by suddenly higher
wind and waves capsizing their vessel. Boats could suffer
significant damage in high winds.

Locations impacted include...
Potomac Creek, Nanjemoy Creek, National Harbor, Quantico, Fort
Washington, Tidal Basin, Reagan National Airport, Swan Point, Coltons
Point, Gunston Hall, Occoquan Bay, Popes Creek, Saint Clements Bay,
Maryland Point, Port Tobacco River, Colonial Beach, Leesylvania State
Park, Cobb Island, Mathias Point and U.S. 301 Nice Memorial Bridge.</description>
        <instruction>Move to safe harbor immediately as gusty winds and high waves are
expected.</instruction>
        <web>http://www.weather.gov</web>
        <parameter>
            <valueName>eventMotionDescription</valueName>
            <value>2020-08-25T18:58:00.000-04:00...storm...318DEG...26KT...38.93,-77.18 38.84,-77.95 </value>
        </parameter>
        <parameter>
            <valueName>hailSize</valueName>
            <value>0.00</value>
        </parameter>
        <parameter>
            <valueName>windGust</valueName>
            <value>50 knots</value>
        </parameter>
        <parameter>
            <valueName>NWSheadline</valueName>
            <value>A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 845 PM EDT</value>
        </parameter>
        <parameter>
            <valueName>VTEC</valueName>
            <value>/O.CON.KLWX.MA.W.0279.000000T0000Z-200826T0045Z/</value>
        </parameter>
        <parameter>
            <valueName>PIL</valueName>
            <value>LWXMWSLWX</value>
        </parameter>
        <parameter>
            <valueName>BLOCKCHANNEL</valueName>
            <value>CMAS</value>
        </parameter>
        <parameter>
            <valueName>BLOCKCHANNEL</valueName>
            <value>EAS</value>
        </parameter>
        <parameter>
            <valueName>BLOCKCHANNEL</valueName>
            <value>NWEM</value>
        </parameter>
        <parameter>
            <valueName>eventEndingTime</valueName>
            <value>2020-08-25T20:45:00-04:00</value>
        </parameter>
        <area>
            <areaDesc>Tidal Potomac from Key Bridge to Indian Head MD; Tidal Potomac from Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA</areaDesc>
            <polygon>38.49,-77.33 38.67,-77.24 38.64,-77.19 38.65,-77.16 38.7,-77.2 38.73,-77.06 38.91,-77.05 38.85,-77 38.73,-77 38.51,-77.25 38.39,-77.23 38.46,-77.01 38.34,-76.95 38.27,-76.84 38.25,-76.72 38.16,-76.74 38.21,-76.95 38.38,-77.06 38.33,-77.17 38.34,-77.3 38.49,-77.33</polygon>
            <geocode>
                <valueName>UGC</valueName>
                <value>ANZ535</value>
            </geocode>
            <geocode>
                <valueName>UGC</valueName>
                <value>ANZ536</value>
            </geocode>
            <geocode>
                <valueName>UGC</valueName>
                <value>ANZ537</value>
            </geocode>
            <geocode>
                <valueName>SAME</valueName>
                <value>073535</value>
            </geocode>
            <geocode>
                <valueName>SAME</valueName>
                <value>073536</value>
            </geocode>
            <geocode>
                <valueName>SAME</valueName>
                <value>073537</value>
            </geocode>
        </area>
    </info>
</alert>