Alert archive / Arizona / Blowing Dust Advisories in 2017

Blowing Dust Advisory 21, NWS Tucson, AZ

July 13, 2017Pima County, Pinal County, Arizona

NWS Tucson, AZ issued this blowing dust advisory at Jul 13, 2017, 6:00 PM MST for Pima County, Pinal County, Arizona. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: Jul 13, 2017, 6:00 PM MST (01:00 UTC)
Expired: Jul 13, 2017, 8:00 PM MST
In force: 2 hr
Issued by: NWS Tucson, AZ

Counties Pima County, AZ, Pinal County, AZ

The radar

The Phoenix radar (KIWA), 88 km from the middle of the area, began a volume at 01:04 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 (KDMA), launched 00:00Z, 1.0 hours before the alert went out and 73 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: 757 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 2798 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -55 m²/s²
0-3 km storm-relative helicity: -41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

961 
WWUS75 KTWC 140100
NPWTWC

URGENT - WEATHER MESSAGE
National Weather Service Tucson AZ
600 PM MST Thu Jul 13 2017

AZZ502-140300-
/O.NEW.KTWC.DU.Y.0021.170714T0100Z-170714T0300Z/
Tohono O'Odham Nation-
Including the city of Sells
600 PM MST Thu Jul 13 2017

...BLOWING DUST ADVISORY IN EFFECT UNTIL 8 PM MST THIS EVENING
FOR THE TOHONO O'ODHAM NATION...

The National Weather Service in Tucson has issued a Blowing Dust
Advisory, which is in effect until 8 PM MST this evening. 

* IMPACTS...Blowing dust can restrict visibilities below a mile
  posing a significant hazard to motorists. 

* TIMING...through 8 pm

* WINDS...35 to 45 mph from the south and southeast

* VISIBILITY...below 1 mile.

* For a detailed view of the hazard area...visit 
  weather.gov/Tucson and click on the Detailed Hazards Icon 

* Current air pollution levels are available from the Pima 
  County Department of Environmental Quality website at 
  www.pima.gov/deq or by calling (520) 724-7446 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blowing Dust Advisory means that blowing dust will restrict
visibilities below one mile in some areas. Travelers are urged to
use caution. If you encounter localized dense blowing dust...
especially near plowed fields or construction sites...do not
drive into it if at all possible.

&&

$$

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 5:05 PM MST	Special Weather Statement	TWC	Cochise	55 min
Jul 13, 5:13 PM MST	Severe Thunderstorm Warning	TWC	Cochise	47 min
Jul 13, 5:25 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima	50 min
Jul 13, 5:41 PM MST	Areal Flood Advisory	TWC	Pima	2 hr
Jul 13, 5:43 PM MST	Severe Thunderstorm Warning	TWC	Cochise	62 min
Jul 13, 6:00 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima	45 min
Jul 13, 6:05 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Jul 13, 6:13 PM MST	Special Weather Statement	TWC	Graham	47 min
Jul 13, 6:36 PM MST	Flash Flood Warning	TWC	Cochise	114 min
Jul 13, 6:43 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima, Santa Cruz	62 min
Jul 13, 6:47 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Santa Cruz	33 min
Jul 13, 7:07 PM MST	Special Weather Statement	TWC		38 min
Jul 13, 7:10 PM MST	Severe Thunderstorm Warning	TWC	Pima	80 min
Jul 13, 7:40 PM MST	Special Weather Statement	TWC	Santa Cruz	65 min
Jul 13, 7:43 PM MST	Flash Flood Warning	TWC	Pima, Pinal	2 hr
Jul 13, 7:56 PM MST	Special Weather Statement	TWC		49 min
Jul 13, 8:08 PM MST	Severe Thunderstorm Warning	TWC	Pima	37 min
Jul 13, 8:32 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	43 min
Jul 13, 9:12 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	48 min
Jul 14, 3:55 PM MST	Special Weather Statement	TWC	Graham	35 min
Jul 14, 4:38 PM MST	Special Weather Statement	TWC		37 min
Jul 14, 4:55 PM MST	Severe Thunderstorm Warning	TWC	Pinal	35 min

Nearby

Blowing Dust Advisories in Arizona, 2017 Every blowing dust advisory in 2017

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.