Alert archive / Arizona / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 177, NWS Tucson, AZ

July 24, 2024Pima County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jul 24, 2024, 2:10 PM MST for Pima County, Arizona. It was in force for 50 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 24, 2024, 2:10 PM MST (21:10 UTC)
Expired: Jul 24, 2024, 3:00 PM MST
In force: 50 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Pima County, AZ

The radar

The Tucson radar (KEMX), 112 km from the middle of the area, began a volume at 21:11 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 24, 2:01 PM MST	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Tuscon, AZ (KTUS), launched 12:00Z, 9.2 hours before the alert went out and 84 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: 2 J/kg
Mixed-layer CIN: -309 J/kg
Mixed-layer LCL: 3003 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 86 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 severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 24, 1:51 PM MST, 19 minutes earlier.

Area forecast discussion, Jul 24, 1:51 PM MST, 19 minutes before

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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 24, 2:28 AM MST	Blowing Dust Advisory	TWC	Pima, Pinal	18 hr
Jul 24, 2:28 PM MST	Severe Thunderstorm Warning	TWC	Pima	47 min
Jul 24, 2:54 PM MST	Severe Thunderstorm Warning	TWC	Pima	51 min
Jul 24, 3:00 PM MST	Areal Flood Advisory	TWC	Pima	2 hr
Jul 24, 3:11 PM MST	Severe Thunderstorm Warning	TWC	Pima	34 min
Jul 24, 3:24 PM MST	Severe Thunderstorm Warning	TWC	Pima	36 min
Jul 24, 3:35 PM MST	Severe Thunderstorm Warning	TWC	Pima	25 min
Jul 24, 3:41 PM MST	Severe Thunderstorm Warning	TWC	Pima	49 min
Jul 24, 3:46 PM MST	Areal Flood Advisory	TWC	Pima	119 min
Jul 24, 4:02 PM MST	Severe Thunderstorm Warning	TWC	Pima	43 min
Jul 24, 4:09 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 24, 4:14 PM MST	Severe Thunderstorm Warning	TWC	Pima	31 min
Jul 24, 4:27 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	35 min
Jul 24, 4:31 PM MST	Areal Flood Advisory	TWC	Pima	119 min
Jul 24, 4:39 PM MST	Dust Storm Warning	TWC	Pinal	96 min
Jul 24, 4:46 PM MST	Severe Thunderstorm Warning	TWC	Pima	44 min
Jul 24, 4:58 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	2 hr

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.