Alert archive / Arizona / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 153, NWS Tucson, AZ

August 23, 2021Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Aug 23, 2021, 2:43 PM MST for Cochise County, Arizona. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 23, 2021, 2:43 PM MST (21:43 UTC)
Expired: Aug 23, 2021, 3:07 PM MST
In force: 24 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), 76 km from the middle of the area, began a volume at 21:41 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, 9.7 hours before the alert went out and 105 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2559 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 50 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

115 
WUUS55 KTWC 232143
SVRTWC
AZC003-232230-
/O.NEW.KTWC.SV.W.0153.210823T2143Z-210823T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
243 PM MST Mon Aug 23 2021

The National Weather Service in Tucson has issued a

* Severe Thunderstorm Warning for...
  Central Cochise County in southeastern Arizona...

* Until 330 PM MST.

* At 242 PM MST, a severe thunderstorm was located near
  Pearce-Sunsites, moving northwest at 5 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Pearce-Sunsites.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3188 10970 3178 10984 3192 11008 3209 10983
TIME...MOT...LOC 2142Z 142DEG 6KT 3187 10983 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Carpenter

1 follow-up statement

858 
WWUS55 KTWC 232207
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
307 PM MST Mon Aug 23 2021

AZC003-232216-
/O.CAN.KTWC.SV.W.0153.000000T0000Z-210823T2230Z/
Cochise-
307 PM MST Mon Aug 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL COCHISE COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However heavy rain is
still possible with this thunderstorm.

LAT...LON 3188 10970 3178 10984 3192 11008 3209 10983
TIME...MOT...LOC 2204Z 142DEG 6KT 3190 10986 

$$

Carpenter

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 22, 6:24 PM MST	Special Weather Statement	TWC	Cochise	36 min
Aug 23, 12:11 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Aug 23, 12:42 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	3 hr
Aug 23, 1:12 PM MST	Special Weather Statement	TWC	Cochise	48 min
Aug 23, 1:26 PM MST	Special Weather Statement	TWC	Cochise	49 min
Aug 23, 1:28 PM MST	Areal Flood Advisory	TWC	Cochise	2 hr
Aug 23, 1:42 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Aug 23, 1:50 PM MST	Severe Thunderstorm Warning	TWC	Cochise	40 min
Aug 23, 1:54 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Aug 23, 2:09 PM MST	Excessive Heat Watch	TWC	Pima, Pinal	24 hr
Aug 23, 2:13 PM MST	Special Weather Statement	TWC	Cochise	47 min
Aug 23, 2:22 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	3 hr
Aug 23, 2:37 PM MST	Special Weather Statement	TWC	Cochise	38 min
Aug 23, 3:00 PM MST	Special Weather Statement	TWC	Cochise	45 min
Aug 23, 3:32 PM MST	Areal Flood Advisory	TWC	Cochise	118 min
Aug 23, 4:03 PM MST	Special Weather Statement	TWC	Graham	42 min
Aug 23, 4:37 PM MST	Severe Thunderstorm Warning	TWC	Graham, Greenlee	38 min
Aug 23, 4:59 PM MST	Flash Flood Warning Considerable damage threat	TWC	Graham	3 hr

Nearby

Severe Thunderstorm Warnings in Arizona, 2021 Every severe thunderstorm warning in 2021

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.