Alert archive / Arizona / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 34, NWS Tucson, AZ

July 10, 2021Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jul 10, 2021, 5:15 PM MST for Cochise County, Arizona. It was in force for 45 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 10, 2021, 5:15 PM MST (00:15 UTC)
Expired
Jul 10, 2021, 6:00 PM MST
In force
45 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), 43 km from the middle of the area, began a volume at 00:16 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.

What was reported inside it

TimeReportWhereRemark
Jul 10, 5:24 PM MSTTSTM WND GST 916 Wsw Huachuca City, AZASOS STATION KALK PIONEER AIRFIELD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 0.3 hours before the alert went out and 83 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-pSkew-T log-p diagram, Tuscon, AZ at 00:00Z on 2021-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1025 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 00:00Z on 2021-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -32 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1025 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
3304 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-32 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

751 
WUUS55 KTWC 110015
SVRTWC
AZC003-110100-
/O.NEW.KTWC.SV.W.0034.210711T0015Z-210711T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
515 PM MST Sat Jul 10 2021

The National Weather Service in Tucson has issued a

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

* Until 600 PM MST.

* At 514 PM MST, a severe thunderstorm was located over Huachuca
  City, or 10 miles northwest of Sierra Vista, moving west at 15 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...
  Sierra Vista, Whetstone, Huachuca City, Fort Huachuca and Parker
  Canyon Lake.

This includes the following highways...
 Route 82 between mile markers 48 and 52.
 Route 83 between mile markers 4 and 5.
 Route 90 between mile markers 309 and 319.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3169 11027 3148 11027 3143 11045 3170 11045
TIME...MOT...LOC 0014Z 103DEG 11KT 3161 11036 

HAIL...1.00IN
WIND...60MPH
 
$$
2 follow-up statements
686 
WWUS55 KTWC 110022
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
522 PM MST Sat Jul 10 2021

AZC003-110100-
/O.CON.KTWC.SV.W.0034.000000T0000Z-210711T0100Z/
Cochise-
522 PM MST Sat Jul 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM MST
FOR WESTERN COCHISE COUNTY...

At 521 PM MST, a severe thunderstorm was located over Huachuca City,
or 12 miles northwest of Sierra Vista, moving west at 15 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Trained weather spotters.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Sierra Vista, Whetstone, Huachuca City, Fort Huachuca and Parker
Canyon Lake.

This includes the following highways...
 Route 82 between mile markers 48 and 52.
 Route 83 between mile markers 4 and 5.
 Route 90 between mile markers 309 and 319.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3169 11027 3148 11027 3143 11045 3170 11045
TIME...MOT...LOC 0021Z 103DEG 11KT 3162 11039 

HAIL...1.00IN
WIND...70MPH
 
$$

GL
168 
WWUS55 KTWC 110050
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
550 PM MST Sat Jul 10 2021

AZC003-110100-
/O.EXP.KTWC.SV.W.0034.000000T0000Z-210711T0100Z/
Cochise-
550 PM MST Sat Jul 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN COCHISE COUNTY WILL
EXPIRE AT 600 PM MST...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

LAT...LON 3169 11027 3148 11027 3143 11045 3170 11045
TIME...MOT...LOC 0050Z 103DEG 11KT 3167 11066 

$$

GL

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 5:10 PM MSTFlash Flood WarningTWCCochise2 hr
Jul 10, 5:14 PM MSTSevere Thunderstorm WarningTWCCochise, Graham61 min
Jul 10, 5:23 PM MSTSevere Thunderstorm WarningTWCSanta Cruz52 min
Jul 10, 5:30 PM MSTSevere Thunderstorm WarningTWCCochise60 min
Jul 10, 5:42 PM MSTFlash Flood WarningTWCSanta Cruz2 hr
Jul 10, 5:46 PM MSTSevere Thunderstorm WarningTWCCochise, Pima, Santa Cruz59 min
Jul 10, 6:05 PM MSTSevere Thunderstorm WarningTWCSanta Cruz40 min
Jul 10, 6:13 PM MSTSevere Thunderstorm WarningTWCCochise, Graham26 min
Jul 10, 6:22 PM MSTSevere Thunderstorm WarningTWCPima, Santa Cruz53 min
Jul 10, 6:50 PM MSTSpecial Weather StatementTWC25 min
Jul 10, 6:57 PM MSTDust Storm WarningTWCPima, Santa Cruz63 min
Jul 10, 6:57 PM MSTSevere Thunderstorm WarningTWCPima, Santa Cruz48 min
Jul 10, 7:06 PM MSTSevere Thunderstorm WarningTWCCochise, Pima39 min
Jul 10, 7:07 PM MSTDust Storm WarningTWCPima, Pinal83 min
Jul 10, 7:14 PM MSTSevere Thunderstorm WarningTWCPima61 min
Jul 10, 7:29 PM MSTFlash Flood WarningTWCCochise, Pima2 hr
Jul 10, 7:35 PM MSTSevere Thunderstorm WarningTWCCochise, Pima55 min
Jul 10, 8:00 PM MSTDust Storm WarningTWCPima, Pinal86 min
Jul 10, 8:06 PM MSTSevere Thunderstorm WarningTWCPima39 min
Jul 10, 8:12 PM MSTSevere Thunderstorm WarningTWCPima48 min
Jul 10, 8:22 PM MSTFlash Flood WarningTWCPima113 min
Jul 10, 8:29 PM MSTSevere Thunderstorm WarningTWCPima61 min
Jul 10, 8:40 PM MSTSevere Thunderstorm WarningTWCPima, Pinal66 min
Jul 10, 8:41 PM MSTFlash Flood WarningTWCPima2 hr
Jul 10, 8:48 PM MSTAreal Flood AdvisoryTWCPima117 min
Jul 10, 8:51 PM MSTAreal Flood AdvisoryTWCPima114 min
Jul 10, 8:51 PM MSTTornado WarningTWCPima14 min
Jul 10, 9:45 PM MSTSpecial Weather StatementTWC60 min
Jul 10, 10:03 PM MSTSevere Thunderstorm WarningTWCPima42 min
Jul 10, 10:20 PM MSTAreal Flood AdvisoryTWCPima, Pinal3 hr
Jul 10, 10:36 PM MSTAreal Flood AdvisoryTWCPima3 hr
Jul 11, 4:12 PM MSTSpecial Weather StatementTWCGreenlee33 min
Jul 11, 4:44 PM MSTSpecial Weather StatementTWCGreenlee46 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2021Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.