Alert archive / Arizona / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 39, NWS Phoenix, AZ

July 29, 2021Gila County, Pinal County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 29, 2021, 1:58 PM MST for Gila County, Pinal County, Arizona. It was in force for 47 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 29, 2021, 1:58 PM MST (20:58 UTC)
Expired: Jul 29, 2021, 2:45 PM MST
In force: 47 min
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Gila County, AZ, Pinal County, AZ

The radar

The Phoenix radar (KIWA), 77 km from the middle of the area, began a volume at 21:00 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

Phoenix, AZ (KPSR), launched 12:00Z, 9.0 hours before the alert went out and 104 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: 371 J/kg
Mixed-layer CIN: -231 J/kg
Mixed-layer LCL: 2650 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

847 
WUUS55 KPSR 292058
SVRPSR
AZC007-021-292145-
/O.NEW.KPSR.SV.W.0039.210729T2058Z-210729T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Phoenix AZ
158 PM MST Thu Jul 29 2021

The National Weather Service in Phoenix has issued a

* Severe Thunderstorm Warning for...
  Gila County in east central Arizona...
  Pinal County in southeastern Arizona...

* Until 245 PM MST.

* At 158 PM MST, a severe thunderstorm was located over Miami, or
  near Globe, moving west 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...
  Globe, Miami, Central Heights-Midland City, Top-Of-The-World,
  Claypool and Inspiration.

* This includes the following highways...
  US Highway 60 between mile markers 234 and 253.
  AZ Route 70 between mile markers 253 and 254.
  AZ Route 188 between mile markers 214 and 217.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3339 11072 3327 11083 3331 11104 3345 11096
      3345 11082
TIME...MOT...LOC 2058Z 112DEG 6KT 3335 11089 

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

JS

2 follow-up statements

394 
WWUS55 KPSR 292103
SVSPSR

Severe Weather Statement
National Weather Service Phoenix AZ
203 PM MST Thu Jul 29 2021

AZC007-021-292145-
/O.CON.KPSR.SV.W.0039.000000T0000Z-210729T2145Z/
Gila AZ-Pinal AZ-
203 PM MST Thu Jul 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM MST
FOR GILA AND PINAL COUNTIES...

At 203 PM MST, a severe thunderstorm was located near Miami, or 7
miles southwest of Globe, moving west 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...
Globe, Miami, Central Heights-Midland City, Top-Of-The-World,
Claypool and Inspiration.

This includes the following highways...
US Highway 60 between mile markers 234 and 253.
AZ Route 70 between mile markers 253 and 254.
AZ Route 188 between mile markers 214 and 217.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3339 11072 3327 11083 3331 11104 3345 11096
      3345 11082
TIME...MOT...LOC 2103Z 112DEG 6KT 3335 11090 

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

JS

990 
WWUS55 KPSR 292127
SVSPSR

Severe Weather Statement
National Weather Service Phoenix AZ
227 PM MST Thu Jul 29 2021

AZC007-021-292145-
/O.CON.KPSR.SV.W.0039.000000T0000Z-210729T2145Z/
Gila AZ-Pinal AZ-
227 PM MST Thu Jul 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM MST
FOR GILA AND PINAL COUNTIES...

At 227 PM MST, a severe thunderstorm was located near
Top-Of-The-World, or 9 miles west of Globe, moving west 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...
Globe, Miami, Central Heights-Midland City, Top-Of-The-World,
Claypool and Inspiration.

This includes the following highways...
US Highway 60 between mile markers 234 and 253.
AZ Route 70 between mile markers 253 and 254.
AZ Route 188 between mile markers 214 and 217.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3339 11072 3327 11083 3331 11104 3345 11096
      3345 11082
TIME...MOT...LOC 2127Z 112DEG 6KT 3337 11094 

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

JS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 12:56 PM MST	Special Weather Statement	PSR	Maricopa	49 min
Jul 29, 1:14 PM MST	Special Weather Statement	PSR		46 min
Jul 29, 1:22 PM MST	Special Weather Statement	PSR	Yuma	38 min
Jul 29, 1:24 PM MST	Special Weather Statement	PSR	Gila	51 min
Jul 29, 1:26 PM MST	Flash Flood Watch	PSR	La Paz, Maricopa, Yuma	40 hr
Jul 29, 1:33 PM MST	Special Weather Statement	PSR	Gila	42 min
Jul 29, 1:35 PM MST	Areal Flood Advisory	PSR	Maricopa	22 min
Jul 29, 1:36 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	6 hr
Jul 29, 1:42 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	48 min
Jul 29, 1:57 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	4 hr
Jul 29, 2:07 PM MST	Special Weather Statement	PSR		53 min
Jul 29, 2:11 PM MST	Special Weather Statement	PSR	Yuma	49 min
Jul 29, 2:25 PM MST	Areal Flood Advisory	PSR	La Paz, Maricopa	3 hr
Jul 29, 2:32 PM MST	Special Weather Statement	PSR	Yuma	43 min
Jul 29, 2:35 PM MST	Areal Flood Advisory	PSR	Maricopa	3 hr
Jul 29, 2:44 PM MST	Special Weather Statement	PSR	Gila	46 min
Jul 29, 3:00 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	4 hr
Jul 29, 3:04 PM MST	Special Weather Statement	PSR	La Paz	41 min
Jul 29, 3:17 PM MST	Flash Flood Warning EmergencyCatastrophic damage threat	PSR	Gila	3 hr
Jul 29, 3:19 PM MST	Special Weather Statement	PSR	Yuma	41 min
Jul 29, 3:23 PM MST	Special Weather Statement	PSR	Gila	52 min
Jul 29, 3:53 PM MST	Areal Flood Advisory	PSR	La Paz, Maricopa, Yuma	3 hr
Jul 29, 3:56 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	4 hr
Jul 29, 3:59 PM MST	Special Weather Statement	PSR		61 min
Jul 29, 4:00 PM MST	Areal Flood Advisory	PSR	La Paz	3 hr
Jul 29, 4:17 PM MST	Special Weather Statement	PSR	La Paz	58 min
Jul 29, 4:18 PM MST	Areal Flood Advisory	PSR	La Paz	3 hr
Jul 29, 4:40 PM MST	Areal Flood Advisory	PSR	La Paz	3 hr
Jul 29, 4:42 PM MST	Areal Flood Advisory	PSR	Yuma	3 hr
Jul 29, 4:48 PM MST	Special Weather Statement	PSR		57 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.