<alert><identifier>urn:oid:2.49.0.1.840.0.586f2b7d53a6a7f204c491f33003244312ee534e.001.1.IPAWS</identifier><sender>w-nws.webmaster@noaa.gov</sender><sent>2026-08-19T19:08:00-07:00</sent><status>Actual</status><msgType>Alert</msgType><source>211803 v2.3.0</source><scope>Public</scope><code>IPAWSv1.0</code><info><language>en-US</language><category>Met</category><event>Dust Storm Warning</event><responseType>Avoid</responseType><urgency>Expected</urgency><severity>Severe</severity><certainty>Likely</certainty><eventCode><valueName>SAME</valueName><value>DSW</value></eventCode><eventCode><valueName>NationalWeatherService</valueName><value>DSW</value></eventCode><effective>2026-08-19T19:08:00-07:00</effective><onset>2026-08-19T19:08:00-07:00</onset><expires>2026-08-19T20:45:00-07:00</expires><senderName>NWS Tucson AZ</senderName><headline>Dust Storm Warning issued August 19 at 7:08PM MST until August 19 at 8:45PM MST by NWS Tucson AZ</headline><description>The National Weather Service in Tucson has issued a

* Dust Storm Warning for...
Northeastern Pima County in southeastern Arizona...
Central Pinal County in southeastern Arizona...

* Until 845 PM MST.

* At 708 PM MST, an area of blowing dust was located near Flowing
Wells, and was moving northwest at 10 mph.

HAZARD...Less than a quarter mile visibility.

SOURCE...Public reported.

IMPACT...Dangerous life-threatening travel.

* Locations impacted include...
Tucson, Catalina, Oro Valley, Marana, Casas Adobes, Eloy, Flowing
Wells, Saddlebrooke, Avra Valley, Saddlebrooke Ranch, Tortolita,
Picacho, Pinal Airpark, Picacho Peak State Park, Saguaro National
Park West, Catalina State Park, Tucson Mountain Park, Tucson
Estates and Catalina Foothills.

This includes the following highways...
Route 79 between mile markers 92 and 128. Route 87 between mile
markers 116 and 124. Route 77 between mile markers 70 and 93.
Interstate 10 between mile markers 205 and 259.
</description><instruction>Motorists should not drive into a dust storm. PULL ASIDE STAY ALIVE!

Dust storms lead to dangerous driving conditions with visibility
reduced to near zero. If driving, avoid dust storms if possible. If
caught in one, pull off the road, turn off your lights and keep your
foot off the brake.

There is no safe place on a highway when a dust storm hits.
Visibility can be lost immediately, making it difficult or impossible
to slow down and avoid stopped vehicles. Delay travel, or safely exit
the highway before the dust storm arrives.</instruction><web>http://www.weather.gov</web><parameter><valueName>AWIPSidentifier</valueName><value>DSWTWC</value></parameter><parameter><valueName>WMOidentifier</valueName><value>WWUS55 KTWC 200208</value></parameter><parameter><valueName>eventMotionDescription</valueName><value>2026-08-20T02:08:00Z...storm...145DEG...2KT...32.25,-111.02</value></parameter><parameter><valueName>BLOCKCHANNEL</valueName><value>EAS</value></parameter><parameter><valueName>BLOCKCHANNEL</valueName><value>NWEM</value></parameter><parameter><valueName>EAS-ORG</valueName><value>WXR</value></parameter><parameter><valueName>VTEC</valueName><value>/O.NEW.KTWC.DS.W.0024.260820T0208Z-260820T0345Z/</value></parameter><parameter><valueName>eventEndingTime</valueName><value>2026-08-19T20:45:00-07:00</value></parameter><parameter><valueName>WEAHandling</valueName><value>Imminent Threat</value></parameter><parameter><valueName>CMAMtext</valueName><value>NWS: DUST STORM WARNING til 8:45 PM MST. Be ready for a sudden drop to zero visibility.</value></parameter><parameter><valueName>CMAMlongtext</valueName><value>National Weather Service: DUST STORM WARNING for this area until 8:45 PM MST. Be ready for sudden drop to zero visibility. Pull Aside, Stay Alive! When visibility drops, pull far off the road and put your vehicle in park. Turn the lights off and keep your foot off the brake. Infants, the elderly and those with respiratory issues urged to take precautions.</value></parameter><area><areaDesc>Pima, AZ; Pinal, AZ</areaDesc><polygon>32.5,-111.55 32.73,-111.7 32.76,-111.61 32.81,-111.56 32.85,-111.53 33.12,-111.13 33.12,-111.11 32.26,-110.8 32.12,-111.3 32.5,-111.55</polygon><geocode><valueName>SAME</valueName><value>004019</value></geocode><geocode><valueName>SAME</valueName><value>004021</value></geocode><geocode><valueName>UGC</valueName><value>AZC019</value></geocode><geocode><valueName>UGC</valueName><value>AZC021</value></geocode></area></info><info><language>es-US</language><category>Met</category><event>Dust Storm Warning</event><responseType>Avoid</responseType><urgency>Expected</urgency><severity>Severe</severity><certainty>Likely</certainty><eventCode><valueName>SAME</valueName><value>DSW</value></eventCode><eventCode><valueName>NationalWeatherService</valueName><value>DSW</value></eventCode><effective>2026-08-19T19:08:00-07:00</effective><onset>2026-08-19T19:08:00-07:00</onset><expires>2026-08-19T20:45:00-07:00</expires><senderName>NWS Tucson AZ</senderName><headline>Dust Storm Warning issued August 19 at 7:08PM MST until August 19 at 8:45PM MST by NWS Tucson AZ</headline><description>The National Weather Service in Tucson has issued a

* Dust Storm Warning for...
Northeastern Pima County in southeastern Arizona...
Central Pinal County in southeastern Arizona...

* Until 845 PM MST.

* At 708 PM MST, an area of blowing dust was located near Flowing
Wells, and was moving northwest at 10 mph.

HAZARD...Less than a quarter mile visibility.

SOURCE...Public reported.

IMPACT...Dangerous life-threatening travel.

* Locations impacted include...
Tucson, Catalina, Oro Valley, Marana, Casas Adobes, Eloy, Flowing
Wells, Saddlebrooke, Avra Valley, Saddlebrooke Ranch, Tortolita,
Picacho, Pinal Airpark, Picacho Peak State Park, Saguaro National
Park West, Catalina State Park, Tucson Mountain Park, Tucson
Estates and Catalina Foothills.

This includes the following highways...
Route 79 between mile markers 92 and 128. Route 87 between mile
markers 116 and 124. Route 77 between mile markers 70 and 93.
Interstate 10 between mile markers 205 and 259.
</description><instruction>Motorists should not drive into a dust storm. PULL ASIDE STAY ALIVE!

Dust storms lead to dangerous driving conditions with visibility
reduced to near zero. If driving, avoid dust storms if possible. If
caught in one, pull off the road, turn off your lights and keep your
foot off the brake.

There is no safe place on a highway when a dust storm hits.
Visibility can be lost immediately, making it difficult or impossible
to slow down and avoid stopped vehicles. Delay travel, or safely exit
the highway before the dust storm arrives.</instruction><web>http://www.weather.gov</web><parameter><valueName>AWIPSidentifier</valueName><value>DSWTWC</value></parameter><parameter><valueName>WMOidentifier</valueName><value>WWUS55 KTWC 200208</value></parameter><parameter><valueName>eventMotionDescription</valueName><value>2026-08-20T02:08:00Z...storm...145DEG...2KT...32.25,-111.02</value></parameter><parameter><valueName>BLOCKCHANNEL</valueName><value>EAS</value></parameter><parameter><valueName>BLOCKCHANNEL</valueName><value>NWEM</value></parameter><parameter><valueName>EAS-ORG</valueName><value>WXR</value></parameter><parameter><valueName>VTEC</valueName><value>/O.NEW.KTWC.DS.W.0024.260820T0208Z-260820T0345Z/</value></parameter><parameter><valueName>eventEndingTime</valueName><value>2026-08-19T20:45:00-07:00</value></parameter><parameter><valueName>WEAHandling</valueName><value>Imminent Threat</value></parameter><parameter><valueName>CMAMtext</valueName><value>SNM: AVISO DE TORMENTA DE POLVO hasta las 8:45 PM MST. Espere reduccion de visibilidad.</value></parameter><parameter><valueName>CMAMlongtext</valueName><value>AVISO DE TORMENTA DE POLVO hasta las 8:45 PM MST. Estar alerta para una reduccion repentina en visibilidad. Cuando la visibilidad disminuya, mueva su vehiculo fuera de la carretera. Apague las luces y mantenga su pie fuera del freno. Se recomienda enfaticamente el tomar precauciones para los infantes, ancianos y personas con problemas respiratorios.</value></parameter><area><areaDesc>Pima, AZ; Pinal, AZ</areaDesc><polygon>32.5,-111.55 32.73,-111.7 32.76,-111.61 32.81,-111.56 32.85,-111.53 33.12,-111.13 33.12,-111.11 32.26,-110.8 32.12,-111.3 32.5,-111.55</polygon><geocode><valueName>SAME</valueName><value>004019</value></geocode><geocode><valueName>SAME</valueName><value>004021</value></geocode><geocode><valueName>UGC</valueName><value>AZC019</value></geocode><geocode><valueName>UGC</valueName><value>AZC021</value></geocode></area></info><Signature xmlns="http://www.w3.org/2000/09/xmldsig#" xmlns:ns5="http://gov.fema.ipaws.services/IPAWS_CAPService/" xmlns:ns2="urn:oasis:names:tc:emergency:cap:1.2" xmlns:ns4="http://gov.fema.ipaws.services/capresponse" xmlns:ns3="http://gov.fema.ipaws.services/caprequest"><SignedInfo><CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/><SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/><Reference URI=""><Transforms><Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/></Transforms><DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/><DigestValue>XI1SgZzL3A23IdIAQw8OrL28KG/ZYzq3soCn+DfBv/8=</DigestValue></Reference></SignedInfo><SignatureValue>I0JRqYcYJPpK5gQcFLYxC7xNwooGo9zPqMmVDq+lDiKaNVdwF1R0Ooqri07yIBiEUuTx8c2cW+x4&#13;
IXIjCF+BsI3wsNGUf9BkyoMLo/7EeQ2sndqogORVkhghofuZcuKWNRkKt6eBqRkCUQzHUq6hxzt4&#13;
HL9cvYzc2S3U8z3+gJG5muxhbzx8DElG/lRTfqx3ea86vOcMOR/EBm5lrZXQJ6d8hj7osVk9AkB6&#13;
UVIQ8zHviUtTYGOojmbH7dN7FJ7YqG+jSsR13stU28U3Rg+fSe2Gj1xVHqKuJvwMPKTEDn6zzeeM&#13;
iWZGwpwJOfvYEzASRmWSOB7huxjvZx6tUAfOag==</SignatureValue><KeyInfo><X509Data><X509SubjectName>CN=IPAWSOPEN200032,OU=A01410D0000019A5E4549540014DF2C,OU=Devices IPAWS,OU=National Continuity Programs,O=FEMA IPAWS,C=US</X509SubjectName><X509Certificate>MIIHPzCCBSegAwIBAgIQQAGaXkVJb3yj70Q8FAqMbzANBgkqhkiG9w0BAQsFADBdMQswCQYDVQQG&#13;
EwJVUzESMBAGA1UEChMJSWRlblRydXN0MSAwHgYDVQQLExdJZGVuVHJ1c3QgR2xvYmFsIENvbW1v&#13;
bjEYMBYGA1UEAxMPSUdDIERldmljZSBDQSAyMB4XDTI1MTEwNzEyMjMxMFoXDTI4MTEwNjEyMjIx&#13;
MFowgaUxCzAJBgNVBAYTAlVTMRMwEQYDVQQKEwpGRU1BIElQQVdTMSUwIwYDVQQLExxOYXRpb25h&#13;
bCBDb250aW51aXR5IFByb2dyYW1zMRYwFAYDVQQLEw1EZXZpY2VzIElQQVdTMSgwJgYDVQQLEx9B&#13;
MDE0MTBEMDAwMDAxOUE1RTQ1NDk1NDAwMTRERjJDMRgwFgYDVQQDEw9JUEFXU09QRU4yMDAwMzIw&#13;
ggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCOdhA5DPitMFp6DUbiQZi/anJ6L9qtPrRz&#13;
gZksP2aOSve50875b4yi2eMv2caKpF+lxtbmzxdZjRuV55TnCkn7HaaLpi+7nFP4aDB9DDw/Gnop&#13;
65nNzLvZ7MXpCC3ikJk09iSgwVaw6RGte9X2WyUoPaEmygjv1lsVx+JGohgvPxTtiZhQJyxkxbM5&#13;
rR2MAC5VjsrZNu3idfvd1B0EEGM1cVU9jpVuyiWK53k+vPuSOH/UWMXezzrBEwjtw1SMVv2/dxKz&#13;
79gaITMmF6z5QqDFV0cstzmyEZWhyoavCpXW4W+vU+FLO0IgXINzY34IsnFQ/cqGEJ6MtC63uM8f&#13;
2L7dAgMBAAGjggKwMIICrDAOBgNVHQ8BAf8EBAMCBaAwfQYIKwYBBQUHAQEEcTBvMCkGCCsGAQUF&#13;
BzABhh1odHRwOi8vaWdjLm9jc3AuaWRlbnRydXN0LmNvbTBCBggrBgEFBQcwAoY2aHR0cDovL3Zh&#13;
bGlkYXRpb24uaWRlbnRydXN0LmNvbS9jZXJ0cy9pZ2NkZXZpY2VjYTIucDdjMB8GA1UdIwQYMBaA&#13;
FD+LR65hHetlI5XEOi3tu0jVIykiMIIBQwYDVR0gBIIBOjCCATYwDQYLYIZIAYb5LwBkJQEwggEj&#13;
BgtghkgBhvkvAGQmATCCARIwSwYIKwYBBQUHAgEWP2h0dHBzOi8vc2VjdXJlLmlkZW50cnVzdC5j&#13;
b20vY2VydGlmaWNhdGVzL3BvbGljeS9JR0MvaW5kZXguaHRtbDCBwgYIKwYBBQUHAgIwgbUMgbJD&#13;
ZXJ0aWZpY2F0ZSB1c2UgcmVzdHJpY3RlZCB0byBSZWx5aW5nIFBhcnR5KHMpIGluIGFjY29yZGFu&#13;
Y2Ugd2l0aCBJR0MtQ1AgKHNlZSBodHRwczovL3NlY3VyZS5pZGVudHJ1c3QuY29tL2NlcnRpZmlj&#13;
YXRlcy9wb2xpY3kvaWdjL2luZGV4Lmh0bWwpLiBJR0MtQ1BTIGluY29ycG9yYXRlZCBieSByZWZl&#13;
cmVuY2UuMEUGA1UdHwQ+MDwwOqA4oDaGNGh0dHA6Ly92YWxpZGF0aW9uLmlkZW50cnVzdC5jb20v&#13;
Y3JsL2lnY2RldmljZWNhMi5jcmwwGgYDVR0RBBMwEYIPSVBBV1NPUEVOMjAwMDMyMB0GA1UdDgQW&#13;
BBQ8QhNU0KQ6GUEOz5peBrNTppU+fDAxBgNVHSUEKjAoBggrBgEFBQcDAgYIKwYBBQUHAwUGCCsG&#13;
AQUFBwMGBggrBgEFBQcDBzANBgkqhkiG9w0BAQsFAAOCAgEAXiYe+0catdoGF4nXiIoyywVkVTaG&#13;
BacaUIjTceAJv35LhC5gwAM+O3OudKQQbMeIzOcjJluFc4vFjmzL/DxLLKk6IVVZQ+MXO8O5UZ6e&#13;
0hSwQv3mO+9JkCYL7M/GIJwiq6XuEiLS7wESwnHq2tIppZNfpcZcMSlQC+4hoUPJuVNU7QVFtvXe&#13;
6FaB/zDMTU3pzOuCxn/SNIhBKHVesE8n5soIp5q8U/R/I9vYM52NISzZcYPGUp6Snyd9mVqmxAo+&#13;
t3pAgsojLOrSBPLQoPoip/KeKCMahrumQuaHi6t3ML6IlCIuOeNnHEaxnUIWGD7kAswOKsqGGjMN&#13;
JwXw6TeqrddvCg8Nd0SH7mWI/vjOq/ykZs2q6lB3b/5ur7YjGOdT3310R0VhZ8pxuyUTrR6EFlFR&#13;
PkWhg46BaEiP1GtzmEW7wT0YStf4wvwDR3HkjpzNoBO92+iwhVHPKyl7T4METnDyTAD+aDn/Xtp/&#13;
pZePlh9uOkCqS7NOm6B4Hjra/iL3BQG2gwcE6XOzbETH6/ibKwMroFDAgqe8AA6xdmcajHBf7/wA&#13;
maMrAQmgbINPpZWjMo3wf2IccUTVHxLaZj+yQZcWMuX9R2H84eTo/CfqmG1RyxcqO0Nd1BS8i8Ii&#13;
YnCXXUlXkpl0xFj1R1xiGv8bd4l5AGjorijY2Wnub1m4Y4k=</X509Certificate></X509Data></KeyInfo></Signature></alert>