Alert archive / Arizona / Dust Storm Warnings in 2021

Dust Storm Warning 2, NWS Tucson, AZ

July 10, 2021Pima County, Santa Cruz County, Arizona

NWS Tucson, AZ issued this dust storm warning at Jul 10, 2021, 6:57 PM MST for Pima County, Santa Cruz County, Arizona. It was in force for 63 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 10, 2021, 6:57 PM MST (01:57 UTC)
Expired: Jul 10, 2021, 8:00 PM MST
In force: 63 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon

Counties Pima County, AZ, Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 44 km from the middle of the area, began a volume at 02:00 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Jul 10, 7:05 PM MST	TSTM WND GST 60	6 Sw Tucson, AZ	ASOS STATION KTUS TUCSON INTERNATIONAL AIRPORT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 2.0 hours before the alert went out and 24 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1025 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 3304 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -32 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

973 
WWUS55 KTWC 110157
DSWTWC

BULLETIN - EAS ACTIVATION REQUESTED
Dust Storm Warning
National Weather Service Tucson AZ
657 PM MST Sat Jul 10 2021

AZC019-023-110300-
/O.NEW.KTWC.DS.W.0002.210711T0157Z-210711T0300Z/
Pima-Santa Cruz-
657 PM MST Sat Jul 10 2021

The National Weather Service in Tucson has issued a

* Dust Storm Warning for...
  Northeastern Pima County in southeastern Arizona...
  Northwestern Santa Cruz County in southeastern Arizona...

* Until 800 PM MST.

* At 656 PM MST, a dust storm was over Sahuarita, Green Valley and 
  Amado moving northwest at 25 mph.

  HAZARD...Near zero visibility with strong wind in excess of 40 
           mph.

  SOURCE...Trained weather spotters.

  IMPACT...Dangerous life-threatening travel.

* This includes the following highways...
   Interstate 10 between mile markers 266 and 270.
   Interstate 19 between mile markers 31 and 62.
   Route 86 between mile markers 147 and 171.
   Route 286 between mile markers 24 and 45.

Locations impacted include...
Tucson, Sahuarita, Green Valley, Drexel Heights, Three Points, Pascua
Pueblo Yaqui Reservation, East Sahuarita, Summit, Tucson Estates,
Valencia West, Tucson International Airport, Saguaro National Park
West, San Xavier Mission, Ryan AirField and Arivaca Junction.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Dust storms are unhealthy and have been known to lead to Valley
Fever. Avoid outdoor exposure.

Motorists should not drive into a dust storm. PULL ASIDE STAY ALIVE!

&&

A Severe Thunderstorm Watch remains in effect until midnight MST for
southeastern Arizona.

LAT...LON 3213 11083 3171 11096 3180 11145 3229 11132
TIME...MOT...LOC 0156Z 127DEG 21KT 3194 11096 

$$

GL

1 follow-up statement

248 
WWUS55 KTWC 110255
DSWTWC

Dust Storm Warning
National Weather Service Tucson AZ
755 PM MST Sat Jul 10 2021

AZC019-023-110305-
/O.EXP.KTWC.DS.W.0002.000000T0000Z-210711T0300Z/
Pima-Santa Cruz-
755 PM MST Sat Jul 10 2021

...THE DUST STORM WARNING FOR NORTHEASTERN PIMA AND NORTHWESTERN
SANTA CRUZ COUNTIES WILL EXPIRE AT 800 PM MST...

The dust storm which prompted the warning has exited the area.
Therefore, the dust storm warning will be allowed to expire.

LAT...LON 3213 11083 3171 11096 3180 11145 3229 11132
TIME...MOT...LOC 0255Z 127DEG 21KT 3213 11125 

$$

GL

The office that day

Everything else NWS Tucson, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 10, 5:10 PM MST	Flash Flood Warning	TWC	Cochise	2 hr
Jul 10, 5:14 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Graham	61 min
Jul 10, 5:15 PM MST	Severe Thunderstorm Warning	TWC	Cochise	45 min
Jul 10, 5:23 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	52 min
Jul 10, 5:30 PM MST	Severe Thunderstorm Warning	TWC	Cochise	60 min
Jul 10, 5:42 PM MST	Flash Flood Warning	TWC	Santa Cruz	2 hr
Jul 10, 5:46 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima, Santa Cruz	59 min
Jul 10, 6:05 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	40 min
Jul 10, 6:13 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Graham	26 min
Jul 10, 6:22 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	53 min
Jul 10, 6:50 PM MST	Special Weather Statement	TWC		25 min
Jul 10, 6:57 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	48 min
Jul 10, 7:06 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima	39 min
Jul 10, 7:07 PM MST	Dust Storm Warning	TWC	Pima, Pinal	83 min
Jul 10, 7:14 PM MST	Severe Thunderstorm Warning	TWC	Pima	61 min
Jul 10, 7:29 PM MST	Flash Flood Warning	TWC	Cochise, Pima	2 hr
Jul 10, 7:35 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima	55 min
Jul 10, 8:00 PM MST	Dust Storm Warning	TWC	Pima, Pinal	86 min
Jul 10, 8:06 PM MST	Severe Thunderstorm Warning	TWC	Pima	39 min
Jul 10, 8:12 PM MST	Severe Thunderstorm Warning	TWC	Pima	48 min
Jul 10, 8:22 PM MST	Flash Flood Warning	TWC	Pima	113 min
Jul 10, 8:29 PM MST	Severe Thunderstorm Warning	TWC	Pima	61 min
Jul 10, 8:40 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	66 min
Jul 10, 8:41 PM MST	Flash Flood Warning	TWC	Pima	2 hr
Jul 10, 8:48 PM MST	Areal Flood Advisory	TWC	Pima	117 min
Jul 10, 8:51 PM MST	Areal Flood Advisory	TWC	Pima	114 min
Jul 10, 8:51 PM MST	Tornado Warning	TWC	Pima	14 min
Jul 10, 9:45 PM MST	Special Weather Statement	TWC		60 min
Jul 10, 10:03 PM MST	Severe Thunderstorm Warning	TWC	Pima	42 min
Jul 10, 10:20 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	3 hr
Jul 10, 10:36 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Jul 11, 4:12 PM MST	Special Weather Statement	TWC	Greenlee	33 min
Jul 11, 4:44 PM MST	Special Weather Statement	TWC	Greenlee	46 min

Nearby

Dust Storm Warnings in Arizona, 2021 Every dust storm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.