<alert><identifier>urn:oid:2.49.0.1.840.0.1b718eddd63e9eee2b243739a80391dc98a61af3.001.1.IPAWS</identifier><sender>w-nws.webmaster@noaa.gov</sender><sent>2026-08-03T19:23:00-07:00</sent><status>Actual</status><msgType>Alert</msgType><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>2026-08-03T19:23:00-07:00</effective><onset>2026-08-03T19:23:00-07:00</onset><expires>2026-08-03T21:00:00-07:00</expires><senderName>NWS Tucson AZ</senderName><headline>Dust Storm Warning issued August 3 at 7:23PM MST until August 3 at 9:00PM 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...
South Central Pinal County in southeastern Arizona...

* Until 900 PM MST.

* At 723 PM MST, a wall of blowing dust in Tucson, moving northwest
at 25 mph.

HAZARD...Less than a quarter mile visibility.

SOURCE...Detected by National Weather Service meteorologists.

IMPACT...Dangerous life-threatening travel.

* Locations impacted include...
Tucson, Oro Valley, Marana, Davis-Monthan Air Force Base, Casas
Adobes, Drexel Heights, Flowing Wells, Tanque Verde, South Tucson,
Three Points, Avra Valley, Pascua Pueblo Yaqui Reservation,
Tortolita, San Xavier Community, Saguaro National Park West, Tucson
Mountain Park, Tucson Estates, Pinal Airpark, Valencia West and
Catalina State Park.

This includes the following highways...
Interstate 19 between mile markers 57 and 63. Route 86 between mile
markers 153 and 171. Route 77 between mile markers 70 and 83.
Interstate 10 between mile markers 226 and 264.
</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 offan area the road, turn off your lights and
keep your foot off the brake.</instruction><web>http://www.weather.gov</web><parameter><valueName>AWIPSidentifier</valueName><value>DSWTWC</value></parameter><parameter><valueName>WMOidentifier</valueName><value>WWUS55 KTWC 040223</value></parameter><parameter><valueName>eventMotionDescription</valueName><value>2026-08-04T02:22:00Z...storm...125DEG...20KT...32.26,-111.06</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.0017.260804T0223Z-260804T0400Z/</value></parameter><parameter><valueName>eventEndingTime</valueName><value>2026-08-03T21:00:00-07:00</value></parameter><parameter><valueName>WEAHandling</valueName><value>Imminent Threat</value></parameter><parameter><valueName>CMAMtext</valueName><value>NWS: DUST STORM WARNING til 9:00 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 9:00 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,-111.52 32.66,-111.17 32.29,-110.74 31.99,-111.14 32.4,-111.75 32.5,-111.52</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>2026-08-03T19:23:00-07:00</effective><onset>2026-08-03T19:23:00-07:00</onset><expires>2026-08-03T21:00:00-07:00</expires><senderName>NWS Tucson AZ</senderName><headline>Dust Storm Warning issued August 3 at 7:23PM MST until August 3 at 9:00PM 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...
South Central Pinal County in southeastern Arizona...

* Until 900 PM MST.

* At 723 PM MST, a wall of blowing dust in Tucson, moving northwest
at 25 mph.

HAZARD...Less than a quarter mile visibility.

SOURCE...Detected by National Weather Service meteorologists.

IMPACT...Dangerous life-threatening travel.

* Locations impacted include...
Tucson, Oro Valley, Marana, Davis-Monthan Air Force Base, Casas
Adobes, Drexel Heights, Flowing Wells, Tanque Verde, South Tucson,
Three Points, Avra Valley, Pascua Pueblo Yaqui Reservation,
Tortolita, San Xavier Community, Saguaro National Park West, Tucson
Mountain Park, Tucson Estates, Pinal Airpark, Valencia West and
Catalina State Park.

This includes the following highways...
Interstate 19 between mile markers 57 and 63. Route 86 between mile
markers 153 and 171. Route 77 between mile markers 70 and 83.
Interstate 10 between mile markers 226 and 264.
</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 offan area the road, turn off your lights and
keep your foot off the brake.</instruction><web>http://www.weather.gov</web><parameter><valueName>AWIPSidentifier</valueName><value>DSWTWC</value></parameter><parameter><valueName>WMOidentifier</valueName><value>WWUS55 KTWC 040223</value></parameter><parameter><valueName>eventMotionDescription</valueName><value>2026-08-04T02:22:00Z...storm...125DEG...20KT...32.26,-111.06</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.0017.260804T0223Z-260804T0400Z/</value></parameter><parameter><valueName>eventEndingTime</valueName><value>2026-08-03T21:00:00-07:00</value></parameter><parameter><valueName>WEAHandling</valueName><value>Imminent Threat</value></parameter><parameter><valueName>CMAMtext</valueName><value>SNM: AVISO DE TORMENTA DE POLVO hasta las 9:00 PM MST. Espere reduccion de visibilidad.</value></parameter><parameter><valueName>CMAMlongtext</valueName><value>AVISO DE TORMENTA DE POLVO hasta las 9:00 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,-111.52 32.66,-111.17 32.29,-110.74 31.99,-111.14 32.4,-111.75 32.5,-111.52</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>UuWRv5RqG8Ed01TScTJ5DacgDi8uG5tMbUBwhCS7lpI=</DigestValue></Reference></SignedInfo><SignatureValue>gzX3bRBFfsXM8kKYAgv5RpKzQ86JITFK9ETFxXstT95w82RK1XAblfNV7giCiBTYP7Q8I3/q0AgB&#13;
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