Alert archive / Arizona / Blowing Dust Advisories in 2021

Blowing Dust Advisory 11, NWS Phoenix, AZ

July 21, 2021La Paz County, Maricopa County, Yuma County, Arizona

NWS Phoenix, AZ issued this blowing dust advisory at Jul 21, 2021, 8:12 AM MST for La Paz County, Maricopa County, Yuma County, Arizona. It took effect at Jul 21, 2021, 2:00 PM MST. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued: Jul 21, 2021, 8:12 AM MST (15:12 UTC)
In effect from: Jul 21, 2021, 2:00 PM MST
Expired: Jul 21, 2021, 8:00 PM MST
In force: 6 hr
Issued by: NWS Phoenix, AZ

Counties La Paz County, AZ, Maricopa County, AZ, Yuma County, AZ

The radar

The Yuma radar (KYUX), 142 km from the middle of the area, began a volume at 15:22 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

Phoenix, AZ (KPSR), launched 12:00Z, 3.2 hours before the alert went out and 139 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: 5 J/kg
Mixed-layer CIN: -244 J/kg
Mixed-layer LCL: 2438 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 11 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this blowing dust advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Phoenix, AZ wrote its last area forecast discussion before this blowing dust advisory went out at Jul 21, 4:53 AM MST, 3 hours 19 minutes earlier.

Area forecast discussion, Jul 21, 4:53 AM MST, 3 hours 19 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 5:15 PM MST	Special Weather Statement	PSR	La Paz	45 min
Jul 20, 5:21 PM MST	Special Weather Statement	PSR	Gila	39 min
Jul 20, 5:32 PM MST	Areal Flood Advisory	PSR	Maricopa	3 hr
Jul 20, 6:22 PM MST	Special Weather Statement	PSR		38 min
Jul 20, 7:22 PM MST	Special Weather Statement	PSR	Pinal	53 min
Jul 20, 8:19 PM MST	Special Weather Statement	PSR	Pinal	41 min
Jul 20, 8:56 PM MST	Special Weather Statement	PSR	Pinal	49 min
Jul 20, 11:51 PM MST	Special Weather Statement	PSR		39 min
Jul 21, 2:21 AM MST	Flash Flood Watch	PSR	Gila, Maricopa, Pinal	5 days
Jul 21, 2:45 PM MST	Special Weather Statement	PSR		45 min
Jul 21, 2:46 PM MST	Dust Storm Warning	PSR	Pinal	40 min
Jul 21, 3:07 PM MST	Special Weather Statement	PSR		38 min
Jul 21, 3:34 PM MST	Special Weather Statement	PSR	Maricopa	41 min
Jul 21, 3:37 PM MST	Special Weather Statement	PSR	La Paz	38 min
Jul 21, 3:42 PM MST	Special Weather Statement	PSR	Yuma	48 min
Jul 21, 3:45 PM MST	Special Weather Statement	PSR	Maricopa	45 min
Jul 21, 3:46 PM MST	Special Weather Statement	PSR		29 min
Jul 21, 3:51 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	4 hr
Jul 21, 3:53 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	37 min
Jul 21, 3:55 PM MST	Special Weather Statement	PSR	Maricopa	50 min
Jul 21, 4:01 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	29 min
Jul 21, 4:11 PM MST	Special Weather Statement	PSR	La Paz	49 min
Jul 21, 4:26 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	4 hr
Jul 21, 4:28 PM MST	Special Weather Statement	PSR	Maricopa	47 min
Jul 21, 4:32 PM MST	Special Weather Statement	PSR		28 min
Jul 21, 4:55 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz	4 hr
Jul 21, 4:59 PM MST	Special Weather Statement	PSR		46 min

Nearby

Blowing Dust Advisories in Arizona, 2021 Every blowing dust advisory 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.