Alert archive / Arizona / Dust Storm Warnings in 2021

Dust Storm Warning 4, NWS Tucson, AZ

July 10, 2021Pima County, Pinal County, Arizona

NWS Tucson, AZ issued this dust storm warning at Jul 10, 2021, 8:00 PM MST for Pima County, Pinal County, Arizona. It was in force for 86 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 10, 2021, 8:00 PM MST (03:00 UTC)
Expired: Jul 10, 2021, 9:26 PM MST
In force: 86 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon

Counties Pima County, AZ, Pinal County, AZ

The radar

The Phoenix radar (KIWA), 94 km from the middle of the area, began a volume at 03:01 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.

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 3.0 hours before the alert went out and 97 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.

027 
WWUS55 KTWC 110300
DSWTWC

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

AZC019-021-110500-
/O.NEW.KTWC.DS.W.0004.210711T0300Z-210711T0500Z/
Pima-Pinal-
800 PM MST Sat Jul 10 2021

The National Weather Service in Tucson has issued a

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

* Until 1000 PM MST.

* At 759 PM MST, a dust storm was near San Isidro, or 14 miles 
  northeast of Sells, moving west at 20 mph.

  HAZARD...Less than a quarter mile visibility with strong wind in 
           excess of 50 mph.

  SOURCE...Detected by National Weather Service meteorologists.

  IMPACT...Dangerous life-threatening travel.

* This includes the following highways...
   Interstate 10 between mile markers 206 and 220.
   Route 86 between mile markers 75 and 140.
   Route 87 between mile markers 116 and 122.

Locations impacted include...
Sells, Eloy, Santa Rosa, Picacho, Topawa, Pisinemo, Chui-Chu, San
Miguel, San Isidro, Picacho Peak State Park, Kitt Peak, Ali Chukson,
Covered Wells, Anegam, Gu Oidak, Vamori, Cockleburr, San Simon, North
Komelik and Kohatk.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

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

LAT...LON 3180 11254 3251 11228 3251 11221 3262 11220
      3278 11178 3276 11174 3273 11174 3273 11167
      3276 11161 3283 11154 3282 11137 3234 11140
      3151 11162
TIME...MOT...LOC 0259Z 094DEG 18KT 3208 11173 

$$

GL

1 follow-up statement

448 
WWUS55 KTWC 110426 RRA
DSWTWC

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

AZC019-021-110436-
/O.CAN.KTWC.DS.W.0004.000000T0000Z-210711T0500Z/
Pima-Pinal-
926 PM MST Sat Jul 10 2021

...THE DUST STORM WARNING FOR CENTRAL PIMA AND SOUTHWESTERN PINAL
COUNTIES IS CANCELLED...

The dust storm which prompted the warning has exited the area.
Therefore, the dust storm warning has been cancelled.

LAT...LON 3180 11254 3251 11228 3251 11221 3262 11220
      3278 11178 3276 11174 3273 11174 3273 11167
      3276 11161 3283 11154 3282 11137 3234 11140
      3151 11162
TIME...MOT...LOC 0419Z 094DEG 18KT 3211 11221 

$$

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	Dust Storm Warning	TWC	Pima, Santa Cruz	63 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, 8:06 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.