Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 6, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 8, 2021, 6:04 PM MST for Maricopa County, Pinal County, Arizona. It was in force for 26 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 8, 2021, 6:04 PM MST (01:04 UTC)
- Expired
- Jul 8, 2021, 6:30 PM MST
- In force
- 26 min
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Maricopa County, AZ, Pinal County, AZ
The radar
The Phoenix radar (KIWA), 25 km from the middle of the area, began a volume at 01:06 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 00:00Z, 1.1 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.
- Mixed-layer CAPE
- 494 J/kg
- Mixed-layer CIN
- -102 J/kg
- Mixed-layer LCL
- 3376 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
708
WUUS55 KPSR 090104
SVRPSR
AZC013-021-090130-
/O.NEW.KPSR.SV.W.0006.210709T0104Z-210709T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Phoenix AZ
604 PM MST Thu Jul 8 2021
The National Weather Service in Phoenix has issued a
* Severe Thunderstorm Warning for...
Maricopa County in south central Arizona...
Pinal County in southeastern Arizona...
* Until 630 PM MST.
* At 604 PM MST, a severe thunderstorm was located over Queen Valley,
or 8 miles southeast of Gold Canyon, moving southwest at 35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Mesa, Gilbert, Apache Junction, Florence, Gold Canyon, Queen Creek,
Gold Camp, Magma, San Tan Valley, Florence Junction, Queen Valley,
Kings Ranch and Boyce Thompson Arboretum.
* This includes the following highways...
US Highway 60 between mile markers 201 and 224.
AZ Route 79 between mile markers 136 and 150.
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 3345 11131 3327 11112 3311 11130 3300 11146
3327 11174 3335 11155
TIME...MOT...LOC 0104Z 052DEG 29KT 3330 11132
HAIL...0.75IN
WIND...60MPH
$$
SDB1 follow-up statement
523
WWUS55 KPSR 090127
SVSPSR
Severe Weather Statement
National Weather Service Phoenix AZ
627 PM MST Thu Jul 8 2021
AZC013-021-090136-
/O.EXP.KPSR.SV.W.0006.000000T0000Z-210709T0130Z/
Maricopa AZ-Pinal AZ-
627 PM MST Thu Jul 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR MARICOPA AND PINAL COUNTIES
WILL EXPIRE AT 630 PM MST...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and blowing dust are still possible with this thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Phoenix.
LAT...LON 3345 11131 3327 11112 3311 11130 3300 11146
3327 11174 3335 11155
TIME...MOT...LOC 0126Z 270DEG 29KT 3322 11140
$$
SDBThe office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 5:38 PM MST | Special Weather Statement | PSR | Gila | 37 min |
| Jul 8, 6:10 PM MST | Flash Flood Warning | PSR | Gila | 4 hr |
| Jul 8, 6:32 PM MST | Special Weather Statement | PSR | Pinal | 43 min |
| Jul 9, 4:53 PM MST | Special Weather Statement | PSR | Gila | 52 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.