Alert archive / Arizona / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 21, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 21, 2025, 7:33 PM MST for Pinal 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
- Aug 21, 2025, 7:33 PM MST (02:33 UTC)
- Expired
- Aug 21, 2025, 8:15 PM MST
- In force
- 42 min
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Pinal County, AZ
The radar
The Phoenix radar (KIWA), 30 km from the middle of the area, began a volume at 02:37 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, 2.6 hours before the alert went out and 62 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
- 376 J/kg
- Mixed-layer CIN
- -115 J/kg
- Mixed-layer LCL
- 3273 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
700
WUUS55 KPSR 220233
SVRPSR
AZC021-220315-
/O.NEW.KPSR.SV.W.0021.250822T0233Z-250822T0315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Phoenix AZ
733 PM MST Thu Aug 21 2025
The National Weather Service in Phoenix has issued a
* Severe Thunderstorm Warning for...
Pinal County in southeastern Arizona...
* Until 815 PM MST.
* At 733 PM MST, severe thunderstorms were located along a line
extending from near Queen Valley to near Florence Junction to 8
miles east of Florence, moving southwest at 15 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Florence, Florence Junction, Queen Valley, Magma, Coolidge Airport,
and Valley Farms.
This includes the following highways...
US Highway 60 between mile markers 205 and 221.
AZ Route 79 between mile markers 129 and 150.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3328 11156 3342 11123 3310 11114 3290 11144
3290 11145
TIME...MOT...LOC 0233Z 058DEG 15KT 3333 11130 3320 11127 3306 11123
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
GL1 follow-up statement
377
WWUS55 KPSR 220313
SVSPSR
Severe Weather Statement
National Weather Service Phoenix AZ
813 PM MST Thu Aug 21 2025
AZC021-220323-
/O.EXP.KPSR.SV.W.0021.000000T0000Z-250822T0315Z/
Pinal AZ-
813 PM MST Thu Aug 21 2025
...THE SEVERE THUNDERSTORM WARNING FOR PINAL COUNTY WILL EXPIRE AT
815 PM MST...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However, gusty
winds and heavy rain are still possible with these thunderstorms.
&&
LAT...LON 3328 11156 3342 11123 3310 11114 3290 11144
3290 11145
TIME...MOT...LOC 0313Z 058DEG 15KT 3325 11146 3312 11143 3298 11139
$$
GLThe office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 5:12 PM MST | Special Weather Statement | PSR | Gila | 33 min |
| Aug 21, 5:44 PM MST | Severe Thunderstorm Warning | PSR | Maricopa, Pinal | 31 min |
| Aug 21, 6:12 PM MST | Severe Thunderstorm Warning | PSR | Maricopa, Pinal | 33 min |
| Aug 21, 6:22 PM MST | Special Weather Statement | PSR | Pinal | 38 min |
| Aug 21, 6:42 PM MST | Dust Storm Warning | PSR | Maricopa, Pinal | 48 min |
| Aug 21, 6:58 PM MST | Special Weather Statement | PSR | Pinal | 32 min |
| Aug 21, 7:09 PM MST | Special Weather Statement | PSR | Maricopa | 36 min |
| Aug 21, 7:19 PM MST | Special Weather Statement | PSR | 41 min | |
| Aug 21, 7:29 PM MST | Dust Storm Warning | PSR | Maricopa, Pinal | 31 min |
| Aug 21, 8:11 PM MST | Special Weather Statement | PSR | Maricopa | 2 hr |
| Aug 21, 8:18 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 27 min |
| Aug 21, 8:47 PM MST | Special Weather Statement | PSR | Maricopa | 43 min |
| Aug 21, 9:41 PM MST | Dust Storm Warning | PSR | Maricopa | 64 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 2025Every severe thunderstorm warning in 2025
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.