Alert archive / Arizona / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 287, NWS Tucson, AZ

August 12, 2024Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Aug 12, 2024, 12:43 PM MST for Cochise 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: Aug 12, 2024, 12:43 PM MST (19:43 UTC)
Expired: Aug 12, 2024, 1:30 PM MST
In force: 47 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 83 km from the middle of the area, began a volume at 19:44 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, 7.7 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: 219 J/kg
Mixed-layer CIN: -186 J/kg
Mixed-layer LCL: 1948 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: 20 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 Aug 12, 9:59 AM MST, 2 hours 44 minutes earlier.

Area forecast discussion, Aug 12, 9:59 AM MST, 2 hours 44 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
Aug 12, 1:23 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Aug 12, 1:24 PM MST	Severe Thunderstorm Warning	TWC	Cochise	51 min
Aug 12, 1:42 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Santa Cruz	48 min
Aug 12, 1:51 PM MST	Severe Thunderstorm Warning	TWC	Pima	39 min
Aug 12, 1:59 PM MST	Severe Thunderstorm Warning	TWC	Pima	46 min
Aug 12, 2:00 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	45 min
Aug 12, 2:01 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	3 hr
Aug 12, 2:21 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	39 min
Aug 12, 2:24 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	51 min
Aug 12, 2:25 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Aug 12, 2:43 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	47 min
Aug 12, 3:10 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	50 min
Aug 12, 3:30 PM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	3 hr
Aug 12, 3:32 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	43 min
Aug 12, 3:36 PM MST	Flash Flood Warning Considerable damage threat	TWC	Santa Cruz	3 hr
Aug 12, 3:48 PM MST	Severe Thunderstorm Warning	TWC	Pima	42 min
Aug 12, 3:50 PM MST	Severe Thunderstorm Warning	TWC	Pima	40 min
Aug 12, 4:15 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Aug 12, 4:18 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima, Santa Cruz	2 hr
Aug 12, 4:35 PM MST	Severe Thunderstorm Warning	TWC	Pima	40 min
Aug 12, 4:53 PM MST	Severe Thunderstorm Warning	TWC	Cochise	52 min
Aug 12, 4:58 PM MST	Areal Flood Advisory	TWC	Pima	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.