Alert archive / Arizona / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 21, NWS Tucson, AZ

July 5, 2021Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jul 5, 2021, 4:32 PM MST for Cochise County, Arizona. It was in force for 28 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: Jul 5, 2021, 4:32 PM MST (23:32 UTC)
Expired: Jul 5, 2021, 5:00 PM MST
In force: 28 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), 68 km from the middle of the area, began a volume at 23:35 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, 11.5 hours before the alert went out and 95 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: 693 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 1435 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

133 
WUUS55 KTWC 052332
SVRTWC
AZC003-060015-
/O.NEW.KTWC.SV.W.0021.210705T2332Z-210706T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
432 PM MST Mon Jul 5 2021

The National Weather Service in Tucson has issued a

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

* Until 515 PM MST.

* At 431 PM MST, a severe thunderstorm was located near
  Pearce-Sunsites, or 17 miles south of Willcox, moving southeast at
  10 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.

This includes Route 191 between mile markers 46 and 61.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3199 11005 3212 10990 3199 10968 3183 10990
TIME...MOT...LOC 2331Z 315DEG 8KT 3201 10992 

HAIL...1.00IN
WIND...60MPH
 
$$

GL

2 follow-up statements

108 
WWUS55 KTWC 052344
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
444 PM MST Mon Jul 5 2021

AZC003-060015-
/O.CON.KTWC.SV.W.0021.000000T0000Z-210706T0015Z/
Cochise-
444 PM MST Mon Jul 5 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM MST
FOR CENTRAL COCHISE COUNTY...

At 444 PM MST, a severe thunderstorm was located over
Pearce-Sunsites, or 18 miles south of Willcox, moving southeast at 10
mph.

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

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Pearce-Sunsites.

This includes Route 191 between mile markers 46 and 61.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3199 11005 3212 10990 3199 10968 3183 10990
TIME...MOT...LOC 2344Z 315DEG 8KT 3199 10990 

HAIL...0.75IN
WIND...60MPH
 
$$

GL

735 
WWUS55 KTWC 060000
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
500 PM MST Mon Jul 5 2021

AZC003-060010-
/O.CAN.KTWC.SV.W.0021.000000T0000Z-210706T0015Z/
Cochise-
500 PM MST Mon Jul 5 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 gusty winds and
heavy rain are still possible with this thunderstorm.

LAT...LON 3199 11005 3212 10990 3199 10968 3183 10990
TIME...MOT...LOC 2354Z 315DEG 8KT 3196 10987 

$$

GL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 6:33 PM MST	Special Weather Statement	TWC		27 min
Jul 4, 6:39 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 5, 4:31 AM MST	Areal Flood Advisory	TWC	Santa Cruz	2 hr
Jul 5, 10:38 AM MST	Areal Flood Advisory	TWC	Cochise	112 min
Jul 5, 11:48 AM MST	Special Weather Statement	TWC	Cochise	42 min
Jul 5, 2:24 PM MST	Special Weather Statement	TWC	Cochise	51 min
Jul 5, 4:12 PM MST	Special Weather Statement	TWC	Cochise	33 min

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.