Alert archive / Arizona / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 187, NWS Tucson, AZ

September 12, 2022Pima County, Santa Cruz County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Sep 12, 2022, 12:49 PM MST for Pima County, Santa Cruz County, Arizona. It was in force for 41 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: Sep 12, 2022, 12:49 PM MST (19:49 UTC)
Expired: Sep 12, 2022, 1:30 PM MST
In force: 41 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Pima County, AZ, Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 66 km from the middle of the area, began a volume at 19:49 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, 7.8 hours before the alert went out and 56 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: 28 J/kg
Mixed-layer CIN: -309 J/kg
Mixed-layer LCL: 2065 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

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 Sep 12, 8:39 AM MST, 4 hours 10 minutes earlier.

Area forecast discussion, Sep 12, 8:39 AM MST, 4 hours 10 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
Sep 11, 5:12 PM MST	Special Weather Statement	TWC	Pima	48 min
Sep 11, 5:16 PM MST	Special Weather Statement	TWC	Santa Cruz	44 min
Sep 11, 5:21 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Sep 11, 5:50 PM MST	Areal Flood Advisory	TWC	Pima	4 hr
Sep 11, 5:53 PM MST	Severe Thunderstorm Warning	TWC	Pima	52 min
Sep 11, 6:00 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	45 min
Sep 11, 6:02 PM MST	Severe Thunderstorm Warning	TWC	Pima	43 min
Sep 11, 6:05 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	5 hr
Sep 11, 6:09 PM MST	Severe Thunderstorm Warning	TWC	Pima	51 min
Sep 11, 6:32 PM MST	Dust Storm Advisory	TWC	Pima, Pinal	58 min
Sep 11, 6:44 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	46 min
Sep 11, 6:50 PM MST	Areal Flood Advisory	TWC	Pima	102 min
Sep 11, 6:53 PM MST	Severe Thunderstorm Warning	TWC	Pinal	52 min
Sep 11, 6:55 PM MST	Special Weather Statement	TWC	Santa Cruz	50 min
Sep 11, 7:01 PM MST	Severe Thunderstorm Warning	TWC	Pima	44 min
Sep 11, 7:10 PM MST	Areal Flood Advisory	TWC	Pima	15 min
Sep 11, 7:25 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	2 hr
Sep 11, 7:42 PM MST	Severe Thunderstorm Warning	TWC	Pima	48 min
Sep 11, 7:50 PM MST	Special Weather Statement	TWC	Pima	40 min
Sep 11, 8:14 PM MST	Special Weather Statement	TWC	Santa Cruz	46 min
Sep 11, 8:35 PM MST	Special Weather Statement	TWC	Santa Cruz	40 min
Sep 11, 8:52 PM MST	Special Weather Statement	TWC	Cochise	23 min
Sep 11, 9:05 PM MST	Special Weather Statement	TWC	Pima	40 min
Sep 11, 9:22 PM MST	Special Weather Statement	TWC	Cochise	23 min
Sep 12, 1:58 AM MST	Flood Watch	TWC	Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz	20 hr
Sep 12, 1:20 PM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	115 min
Sep 12, 1:28 PM MST	Severe Thunderstorm Warning	TWC	Pima	47 min
Sep 12, 1:32 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima	43 min
Sep 12, 1:47 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Sep 12, 1:56 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Sep 12, 2:05 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	40 min
Sep 12, 2:44 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	106 min
Sep 12, 2:48 PM MST	Severe Thunderstorm Warning	TWC	Cochise	42 min
Sep 12, 3:03 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Sep 12, 3:13 PM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	2 hr
Sep 12, 3:27 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Santa Cruz	48 min
Sep 12, 3:33 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	42 min
Sep 12, 3:38 PM MST	Special Weather Statement	TWC		52 min
Sep 12, 3:46 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima, Santa Cruz	119 min
Sep 12, 3:50 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	40 min
Sep 12, 3:52 PM MST	Tornado Warning	TWC	Pima, Pinal	38 min
Sep 12, 3:54 PM MST	Severe Thunderstorm Warning	TWC	Cochise	51 min
Sep 12, 4:01 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	44 min
Sep 12, 4:06 PM MST	Dust Storm Advisory	TWC	Cochise	38 min
Sep 12, 4:06 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	2 hr
Sep 12, 4:23 PM MST	Severe Thunderstorm Warning	TWC	Pinal	52 min
Sep 12, 4:43 PM MST	Flash Flood Warning Considerable damage threat	TWC	Graham, Greenlee	3 hr

Nearby

Severe Thunderstorm Warnings in Arizona, 2022 Every severe thunderstorm warning in 2022

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.