Alert archive / Arizona / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 7, NWS Tucson, AZ

July 2, 2021Pinal County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jul 2, 2021, 2:36 PM MST for Pinal County, Arizona. It was in force for 39 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 2, 2021, 2:36 PM MST (21:36 UTC)
Expired: Jul 2, 2021, 3:15 PM MST
In force: 39 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Pinal County, AZ

The radar

The Tucson radar (KEMX), 87 km from the middle of the area, began a volume at 21:36 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, 9.6 hours before the alert went out and 56 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: 385 J/kg
Mixed-layer CIN: -127 J/kg
Mixed-layer LCL: 1652 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

039 
WUUS55 KTWC 022136
SVRTWC
AZC021-022215-
/O.NEW.KTWC.SV.W.0007.210702T2136Z-210702T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
236 PM MST Fri Jul 2 2021

The National Weather Service in Tucson has issued a

* Severe Thunderstorm Warning for...
  Southeastern Pinal County in southeastern Arizona...

* Until 315 PM MST.

* At 236 PM MST, a severe thunderstorm was located over Oracle,
  moving west 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...
  Oracle, Saddlebrooke, Campo Bonito, Biosphere 2 and Oracle
  Junction.

This includes the following highways...
 Route 77 between mile markers 89 and 110.
 Route 79 between mile markers 92 and 93.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3273 11066 3253 11068 3252 11097 3280 11093
TIME...MOT...LOC 2136Z 098DEG 7KT 3264 11074 

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

RH

2 follow-up statements

870 
WWUS55 KTWC 022155
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
255 PM MST Fri Jul 2 2021

AZC021-022215-
/O.CON.KTWC.SV.W.0007.000000T0000Z-210702T2215Z/
Pinal-
255 PM MST Fri Jul 2 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM MST
FOR SOUTHEASTERN PINAL COUNTY...

At 253 PM MST, a severe thunderstorm was located over Oracle, moving
west 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...
Oracle, Saddlebrooke, Biosphere 2 and Oracle Junction. 

This includes the following highways...
 Route 77 between mile markers 89 and 106.
 Route 79 between mile markers 92 and 93.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3273 11069 3254 11075 3252 11097 3280 11093
TIME...MOT...LOC 2153Z 098DEG 7KT 3264 11078 

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

RH

900 
WWUS55 KTWC 022208
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
308 PM MST Fri Jul 2 2021

AZC021-022217-
/O.EXP.KTWC.SV.W.0007.000000T0000Z-210702T2215Z/
Pinal-
308 PM MST Fri Jul 2 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PINAL COUNTY WILL
EXPIRE AT 315 PM MST...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

LAT...LON 3273 11069 3254 11075 3252 11097 3280 11093
TIME...MOT...LOC 2207Z 098DEG 7KT 3264 11081 

$$

RH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 5:15 PM MST	Special Weather Statement	TWC	Cochise	45 min
Jul 2, 11:58 AM MST	Areal Flood Advisory	TWC	Cochise, Graham	3 hr
Jul 2, 12:46 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	3 hr
Jul 2, 1:34 PM MST	Special Weather Statement	TWC	Graham	26 min
Jul 2, 2:05 PM MST	Severe Thunderstorm Warning	TWC	Pinal	40 min
Jul 2, 2:27 PM MST	Special Weather Statement	TWC		33 min
Jul 2, 2:48 PM MST	Severe Thunderstorm Warning	TWC	Pima	42 min
Jul 2, 2:53 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 2, 3:01 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	44 min
Jul 2, 3:10 PM MST	Severe Thunderstorm Warning	TWC	Graham, Greenlee	50 min
Jul 2, 3:14 PM MST	Areal Flood Advisory	TWC	Pinal	3 hr
Jul 2, 3:24 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 2, 3:25 PM MST	Dust Storm Warning	TWC	Pima, Pinal	95 min
Jul 2, 3:33 PM MST	Severe Thunderstorm Warning	TWC	Cochise	42 min
Jul 2, 3:35 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	40 min
Jul 2, 3:54 PM MST	Special Weather Statement	TWC	Santa Cruz	51 min
Jul 2, 3:55 PM MST	Special Weather Statement	TWC	Graham	65 min
Jul 2, 4:06 PM MST	Severe Thunderstorm Warning	TWC	Cochise	39 min
Jul 2, 4:09 PM MST	Special Weather Statement	TWC	Graham	51 min
Jul 2, 4:24 PM MST	Special Weather Statement	TWC	Santa Cruz	36 min
Jul 2, 4:34 PM MST	Special Weather Statement	TWC	Santa Cruz	26 min
Jul 2, 4:35 PM MST	Special Weather Statement	TWC	Cochise	40 min
Jul 2, 4:46 PM MST	Special Weather Statement	TWC	Santa Cruz	29 min
Jul 2, 4:51 PM MST	Special Weather Statement	TWC	Pinal	24 min
Jul 2, 4:56 PM MST	Areal Flood Advisory	TWC	Santa Cruz	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.