Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 26, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 15, 2021, 4:26 PM MST for Maricopa County, Arizona. It was in force for 49 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 15, 2021, 4:26 PM MST (23:26 UTC)
- Expired
- Jul 15, 2021, 5:15 PM MST
- In force
- 49 min
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Maricopa County, AZ
The radar
The Phoenix radar (KIWA), 117 km from the middle of the area, began a volume at 23:26 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, 11.4 hours before the alert went out and 86 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
- 138 J/kg
- Mixed-layer CIN
- -210 J/kg
- Mixed-layer LCL
- 2002 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
410
WUUS55 KPSR 152326
SVRPSR
AZC013-160015-
/O.NEW.KPSR.SV.W.0026.210715T2326Z-210716T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Phoenix AZ
426 PM MST Thu Jul 15 2021
The National Weather Service in Phoenix has issued a
* Severe Thunderstorm Warning for...
Maricopa County in south central Arizona...
* Until 515 PM MST.
* At 426 PM MST, a severe thunderstorm was located near Wickenburg,
and is nearly stationary.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Wickenburg.
* This includes the following highways...
US Highway 60 between mile markers 107 and 120.
AZ Route 74 near mile marker 1.
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 3398 11269 3393 11249 3388 11255 3384 11269
3387 11275 3393 11281 3401 11276
TIME...MOT...LOC 2326Z 308DEG 2KT 3395 11268
HAIL...<.75IN
WIND...60MPH
$$
JS2 follow-up statements
099
WWUS55 KPSR 152346
SVSPSR
wind
WWUS55 KPSR 000000
SVSPSR
Severe Weather Statement
National Weather Service Phoenix AZ
446 PM MST Thu Jul 15 2021
AZC013-160015-
/O.CON.KPSR.SV.W.0026.000000T0000Z-210716T0015Z/
Maricopa AZ-
446 PM MST Thu Jul 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM MST
FOR MARICOPA COUNTY...
At 446 PM MST, a severe thunderstorm was located near Wickenburg, and
is nearly stationary.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Wickenburg.
This includes the following highways...
US Highway 60 between mile markers 107 and 120.
AZ Route 74 near mile marker 1.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3398 11269 3393 11249 3388 11255 3384 11269
3387 11275 3393 11281 3401 11276
TIME...MOT...LOC 2346Z 308DEG 2KT 3394 11267
HAIL...<.75IN
WIND...60MPH
$$
JS550
WWUS55 KPSR 160013
SVSPSR
wind
WWUS55 KPSR 000000
SVSPSR
Severe Weather Statement
National Weather Service Phoenix AZ
513 PM MST Thu Jul 15 2021
AZC013-160023-
/O.EXP.KPSR.SV.W.0026.000000T0000Z-210716T0015Z/
Maricopa AZ-
513 PM MST Thu Jul 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR MARICOPA COUNTY WILL EXPIRE AT
515 PM MST...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning will be allowed to expire.
LAT...LON 3398 11269 3393 11249 3388 11255 3384 11269
3387 11275 3393 11281 3401 11276
TIME...MOT...LOC 0013Z 308DEG 2KT 3393 11266
$$
JSThe office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 5:17 PM MST | Special Weather Statement | PSR | 43 min | |
| Jul 14, 5:35 PM MST | Special Weather Statement | PSR | La Paz | 40 min |
| Jul 14, 6:02 PM MST | Special Weather Statement | PSR | 43 min | |
| Jul 14, 6:06 PM MST | Special Weather Statement | PSR | La Paz | 39 min |
| Jul 14, 6:16 PM MST | Special Weather Statement | PSR | 44 min | |
| Jul 14, 6:23 PM MST | Flash Flood Warning | PSR | Maricopa | 4 hr |
| Jul 14, 6:35 PM MST | Areal Flood Advisory | PSR | La Paz | 115 min |
| Jul 14, 6:38 PM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Jul 14, 6:48 PM MST | Special Weather Statement | PSR | 42 min | |
| Jul 14, 7:03 PM MST | Special Weather Statement | PSR | Maricopa | 42 min |
| Jul 14, 7:32 PM MST | Special Weather Statement | PSR | 28 min | |
| Jul 14, 7:51 PM MST | Special Weather Statement | PSR | 39 min | |
| Jul 14, 8:04 PM MST | Areal Flood Advisory | PSR | La Paz, Maricopa | 3 hr |
| Jul 14, 8:10 PM MST | Areal Flood Advisory | PSR | Maricopa, Yuma | 3 hr |
| Jul 14, 8:31 PM MST | Flash Flood Warning | PSR | La Paz, Maricopa | 5 hr |
| Jul 14, 9:21 PM MST | Special Weather Statement | PSR | 39 min | |
| Jul 14, 9:35 PM MST | Special Weather Statement | PSR | La Paz | 40 min |
| Jul 14, 9:52 PM MST | Areal Flood Advisory | PSR | La Paz, Maricopa | 38 min |
| Jul 14, 10:30 PM MST | Flash Flood Warning | PSR | La Paz, Maricopa | 4 hr |
| Jul 15, 5:14 AM MST | Special Weather Statement | PSR | Pinal | 46 min |
| Jul 15, 5:18 AM MST | Special Weather Statement | PSR | Pinal | 42 min |
| Jul 15, 5:44 AM MST | Areal Flood Advisory | PSR | Pinal | 3 hr |
| Jul 15, 2:36 PM MST | Areal Flood Advisory | PSR | Maricopa | 33 min |
| Jul 15, 2:46 PM MST | Special Weather Statement | PSR | Maricopa | 44 min |
| Jul 15, 2:48 PM MST | Areal Flood Advisory | PSR | Maricopa | 14 min |
| Jul 15, 3:02 PM MST | Flash Flood Warning | PSR | Maricopa | 4 hr |
| Jul 15, 3:09 PM MST | Flash Flood Warning | PSR | Maricopa | 4 hr |
| Jul 15, 3:31 PM MST | Special Weather Statement | PSR | Maricopa | 44 min |
| Jul 15, 3:41 PM MST | Special Weather Statement | PSR | Gila | 49 min |
| Jul 15, 3:56 PM MST | Special Weather Statement | PSR | 49 min | |
| Jul 15, 4:04 PM MST | Special Weather Statement | PSR | 41 min | |
| Jul 15, 4:20 PM MST | Special Weather Statement | PSR | La Paz | 40 min |
| Jul 15, 4:22 PM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Jul 15, 4:28 PM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Jul 15, 4:30 PM MST | Special Weather Statement | PSR | Gila | 45 min |
| Jul 15, 4:41 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 49 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.