Alert archive / Arizona / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 220, NWS Tucson, AZ

October 15, 2022Graham County, Pinal County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Oct 15, 2022, 5:13 PM MST for Graham County, 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: Oct 15, 2022, 5:13 PM MST (00:13 UTC)
Expired: Oct 15, 2022, 6:00 PM MST
In force: 47 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Graham County, AZ, Pinal County, AZ

The radar

The Phoenix radar (KIWA), 106 km from the middle of the area, began a volume at 00:13 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 00:00Z, 0.2 hours before the alert went out and 87 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: 354 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 1683 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 78 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 Oct 15, 3:06 PM MST, 2 hours 7 minutes earlier.

Area forecast discussion, Oct 15, 3:06 PM MST, 2 hours 7 minutes before

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In the hours before

Local storm report, Oct 15, 11:14 AM MST, 5 hours 59 minutes before

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Special weather statement, Oct 15, 2:29 PM MST, 2 hours 44 minutes before

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Special weather statement, Oct 15, 3:04 PM MST, 2 hours 9 minutes before

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Special weather statement, Oct 15, 5:05 PM MST, 8 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
Oct 15, 5:05 PM MST	Special Weather Statement	TWC		40 min
Oct 16, 11:08 AM MST	Flash Flood Warning Considerable damage threat	TWC	Pinal	3 hr
Oct 16, 12:05 PM MST	Areal Flood Advisory	TWC	Pinal	3 hr
Oct 16, 2:00 PM MST	Areal Flood Advisory	TWC	Pinal	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.