Alert archive / Arizona / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 49, NWS Tucson, AZ

July 10, 2021Pima County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jul 10, 2021, 10:03 PM MST for Pima 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 outline as issued.

The facts

Issued
Jul 10, 2021, 10:03 PM MST (05:03 UTC)
Expired
Jul 10, 2021, 10:45 PM MST
In force
42 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Pima County, AZ

The radar

The Phoenix radar (KIWA), 157 km from the middle of the area, began a volume at 05:05 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 10, 4:52 PM MSTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Phoenix, AZ (KPSR), launched 00:00Z, 5.1 hours before the alert went out and 152 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, Phoenix, AZ at 00:00Z on 2021-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 965 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, Phoenix, AZ at 00:00Z on 2021-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 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
965 J/kg
Mixed-layer CIN
-311 J/kg
Mixed-layer LCL
3378 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

425 
WUUS55 KTWC 110503
SVRTWC
AZC019-110545-
/O.NEW.KTWC.SV.W.0049.210711T0503Z-210711T0545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
1003 PM MST Sat Jul 10 2021

The National Weather Service in Tucson has issued a

* Severe Thunderstorm Warning for...
  Northwestern Pima County in southeastern Arizona...

* Until 1045 PM MST.

* At 1002 PM MST, a severe thunderstorm was located 11 miles
  southeast of Ajo, moving southwest at 25 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...
  Ajo, Organ Pipe Cactus National Monument, Why, Charco 27 and
  Gunsight.

This includes the following highways...
 Route 85 between mile markers 35 and 73.
 Route 86 between mile markers 53 and 63.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3250 11287 3225 11256 3197 11282 3214 11306
TIME...MOT...LOC 0502Z 047DEG 24KT 3225 11274 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
659 
WWUS55 KTWC 110540
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
1040 PM MST Sat Jul 10 2021

AZC019-110549-
/O.EXP.KTWC.SV.W.0049.000000T0000Z-210711T0545Z/
Pima-
1040 PM MST Sat Jul 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN PIMA COUNTY WILL
EXPIRE AT 1045 PM MST...
                
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 will be allowed to expire.  However gusty
winds and brief heavy rain are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until midnight MST for
southeastern Arizona.

LAT...LON 3250 11287 3225 11256 3197 11282 3214 11306
TIME...MOT...LOC 0539Z 047DEG 24KT 3212 11290 

$$

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, 5:15 PM MSTSevere Thunderstorm WarningTWCCochise45 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, 10:20 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.