Alert archive / Arizona / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 73, NWS Phoenix, AZ

July 28, 2024Pinal County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 28, 2024, 4:28 PM MST for Pinal County, Arizona. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 28, 2024, 4:28 PM MST (23:28 UTC)
Expired: Jul 28, 2024, 5:15 PM MST
In force: 47 min
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Pinal County, AZ

The radar

The Phoenix radar (KIWA), 52 km from the middle of the area, began a volume at 23:31 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 12:00Z, 11.5 hours before the alert went out and 92 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: 554 J/kg
Mixed-layer CIN: -183 J/kg
Mixed-layer LCL: 1872 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 6:40 PM MST	Special Weather Statement	PSR		50 min
Jul 27, 7:02 PM MST	Dust Storm Advisory	PSR	Pinal	28 min
Jul 27, 7:48 PM MST	Dust Storm Advisory	PSR	Pinal	27 min
Jul 28, 12:31 AM MST	Blowing Dust Advisory	PSR	Pinal	19 hr
Jul 28, 3:36 PM MST	Special Weather Statement	PSR		24 min
Jul 28, 3:59 PM MST	Special Weather Statement	PSR		31 min
Jul 28, 4:20 PM MST	Areal Flood Advisory	PSR	Gila	3 hr
Jul 28, 4:24 PM MST	Special Weather Statement	PSR	Pinal	36 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2024 Every severe thunderstorm warning in 2024

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.