Alert archive / Arizona / Blowing Dust Advisories in 2017

Blowing Dust Advisory 10, NWS Tucson, AZ

April 25, 2017Cochise County, Arizona

NWS Tucson, AZ issued this blowing dust advisory at Apr 25, 2017, 3:20 AM MST for Cochise County, Arizona. It took effect at Apr 25, 2017, 11:00 AM MST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Apr 25, 2017, 3:20 AM MST (10:20 UTC)
In effect from: Apr 25, 2017, 11:00 AM MST
Expired: Apr 25, 2017, 8:00 PM MST
In force: 9 hr
Issued by: NWS Tucson, AZ

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 83 km from the middle of the area, began a volume at 10:23 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, 10.3 hours before the alert went out and 113 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 4633 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 48 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 Tucson, AZ wrote its last area forecast discussion before this blowing dust advisory went out at Apr 25, 3:05 AM MST, 15 minutes earlier.

Area forecast discussion, Apr 25, 3:05 AM MST, 15 minutes before

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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.