Alert archive / Arizona / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 199, NWS Tucson, AZ

September 13, 2022Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Sep 13, 2022, 1:18 PM MST for Cochise County, Arizona. It was in force for 42 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 13, 2022, 1:18 PM MST (20:18 UTC)
Expired: Sep 13, 2022, 2:00 PM MST
In force: 42 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 20:22 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, 8.3 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: 545 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 1363 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.9

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 13, 8:36 AM MST, 4 hours 42 minutes earlier.

Area forecast discussion, Sep 13, 8:36 AM MST, 4 hours 42 minutes before

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In the hours before

Special weather statement, Sep 13, 11:54 AM MST, 1 hour 24 minutes before

Special Weather Statement
National Weather Service Tucson AZ
1154 AM MST Tue Sep 13 2022

AZZ507-508-513-131945-
Upper San Pedro River Valley including Sierra
Vista/Benson-Dragoon/Mule/Huachuca and Santa Rita Mountains including
Bisbee/Canelo Hills/Madera Canyon-Eastern Cochise County Below 5000
Feet including Douglas/Willcox-
1154 AM MST Tue Sep 13 2022

...A strong thunderstorm will impact portions of southeastern Pima,
southwestern Cochise and northeastern Santa Cruz Counties through
1245 PM MST...

At 1154 AM MST, Doppler radar was tracking a strong thunderstorm 7
miles north of Sierra Vista, moving northeast at 10 mph.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Sierra Vista, Benson, Whetstone, Huachuca City, St. David, Tombstone,
Kartchner Caverns State Park, Fort Huachuca, Fairbank and Charleston.

This includes the following highways...
 Interstate 10 between mile markers 307 and 311.
 Route 80 between mile markers 294 and 328.
 Route 82 between mile markers 41 and 67.
 Route 90 between mile markers 293 and 332.
 Route 92 between mile markers 322 and 325.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3146 11021 3173 11054 3202 11023 3170 10983
TIME...MOT...LOC 1854Z 226DEG 8KT 3161 11021

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

AWH

Special weather statement, Sep 13, 12:45 PM MST, 33 minutes before

Special Weather Statement
National Weather Service Tucson AZ
1245 PM MST Tue Sep 13 2022

AZZ507-508-513-132030-
Upper San Pedro River Valley including Sierra
Vista/Benson-Dragoon/Mule/Huachuca and Santa Rita Mountains including
Bisbee/Canelo Hills/Madera Canyon-Eastern Cochise County Below 5000
Feet including Douglas/Willcox-
1245 PM MST Tue Sep 13 2022

...A strong thunderstorm will impact portions of central Cochise
County through 130 PM MST...

At 1245 PM MST, Doppler radar was tracking a strong thunderstorm near
Tombstone, or 18 miles northeast of Sierra Vista, moving northeast at
10 mph.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Tombstone and Pearce-Sunsites.

This includes the following highways...
 Route 80 between mile markers 312 and 322.
 Route 82 between mile markers 66 and 67.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3162 10999 3176 11014 3196 10994 3176 10972
TIME...MOT...LOC 1945Z 228DEG 9KT 3171 11001

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

AWH

The office that day

Everything else NWS Tucson, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 12, 5:09 PM MST	Special Weather Statement	TWC		51 min
Sep 12, 5:31 PM MST	Special Weather Statement	TWC		59 min
Sep 12, 5:49 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Sep 12, 6:09 PM MST	Areal Flood Advisory	TWC	Graham	3 hr
Sep 12, 7:16 PM MST	Special Weather Statement	TWC	Pinal	44 min
Sep 13, 11:54 AM MST	Special Weather Statement	TWC	Cochise	51 min
Sep 13, 12:01 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima, Santa Cruz	44 min
Sep 13, 12:45 PM MST	Special Weather Statement	TWC	Cochise	45 min
Sep 13, 2:07 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Graham, Greenlee	38 min
Sep 13, 2:12 PM MST	Severe Thunderstorm Warning	TWC	Cochise	48 min
Sep 13, 2:37 PM MST	Special Weather Statement	TWC	Graham	53 min

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.