Alert archive / Arizona / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 68, NWS Tucson, AZ

July 11, 2024Graham County, Greenlee County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jul 11, 2024, 1:42 PM MST for Graham County, Greenlee County, Arizona. It was in force for 48 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 11, 2024, 1:42 PM MST (20:42 UTC)
Expired: Jul 11, 2024, 2:30 PM MST
In force: 48 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Graham County, AZ, Greenlee County, AZ

The radar

The Tucson radar (KEMX), 165 km from the middle of the area, began a volume at 20:45 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, 8.7 hours before the alert went out and 161 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: 247 J/kg
Mixed-layer CIN: -421 J/kg
Mixed-layer LCL: 2976 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -22 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 11, 10:02 AM MST, 3 hours 40 minutes earlier.

Area forecast discussion, Jul 11, 10:02 AM MST, 3 hours 40 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 10, 5:31 PM MST	Dust Storm Advisory	TWC	Pima, Santa Cruz	44 min
Jul 10, 5:35 PM MST	Severe Thunderstorm Warning	TWC	Pima	19 min
Jul 10, 5:40 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Santa Cruz	50 min
Jul 10, 6:26 PM MST	Dust Storm Advisory	TWC	Cochise	64 min
Jul 10, 7:02 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	43 min
Jul 10, 7:38 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	37 min
Jul 10, 7:45 PM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	2 hr
Jul 10, 11:07 PM MST	Dust Storm Advisory	TWC	Cochise	53 min
Jul 11, 9:47 AM MST	Blowing Dust Advisory	TWC	Pima, Pinal, Santa Cruz	10 hr
Jul 11, 2:05 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	25 min
Jul 11, 2:58 PM MST	Severe Thunderstorm Warning	TWC	Graham	32 min
Jul 11, 3:00 PM MST	Severe Thunderstorm Warning	TWC	Graham, Greenlee	31 min
Jul 11, 3:21 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	39 min
Jul 11, 3:26 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Graham, Greenlee	49 min
Jul 11, 3:41 PM MST	Severe Thunderstorm Warning	TWC	Pima	13 min
Jul 11, 3:43 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Graham, Pima, Pinal	47 min
Jul 11, 3:47 PM MST	Dust Storm Warning	TWC	Cochise	58 min
Jul 11, 3:54 PM MST	Severe Thunderstorm Warning	TWC	Pinal	51 min
Jul 11, 4:07 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima	38 min
Jul 11, 4:12 PM MST	Severe Thunderstorm Warning	TWC	Cochise	52 min
Jul 11, 4:17 PM MST	Severe Thunderstorm Warning	TWC	Graham, Pinal	43 min
Jul 11, 4:18 PM MST	Severe Thunderstorm Warning	TWC	Pima	42 min
Jul 11, 4:34 PM MST	Dust Storm Warning	TWC	Cochise	56 min
Jul 11, 4:39 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	51 min
Jul 11, 4:58 PM MST	Severe Thunderstorm Warning	TWC	Pima	62 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.