Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 27, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 15, 2021, 4:41 PM MST for Maricopa County, Arizona. It was in force for 49 min. 5 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 15, 2021, 4:41 PM MST (23:41 UTC)
- Expired
- Jul 15, 2021, 5:30 PM MST
- In force
- 49 min
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
County Maricopa County, AZ
The radar
The Phoenix radar (KIWA), 30 km from the middle of the area, began a volume at 23:44 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 15, 5:10 PM MST | TSTM WND DMG | 3 Nnw East Mesa, AZ | TWO 50 FOOT TREES WERE UPROOTED AND EACH ONE FELL ON TWO SEPARATE HOMES AT APACHE WELLS GOLF COURSE. ONE OF THE TREES REPORTEDLY FELL FROM STORMS ON JULY 10TH. NO INJURIES WERE REPORTED. |
| Jul 15, 5:10 PM MST | TSTM WND GST 61 | 7 N East Mesa, AZ | MESONET STATION SRP10 6.5 N EAST MESA (SRP). |
| Jul 15, 5:10 PM MST | HAIL 0.25 | 5 Ne Mesa, AZ | SUSTAINED WINDS OF 30 MPH GUSTING TO 50 MPH WITH HAIL. |
| Jul 15, 5:12 PM MST | TSTM WND DMG | 3 Nnw East Mesa, AZ | ***DELAYED REPORT*** CARPORT AND PARTIAL ROOF TORN OFF HOME AND IN THE STREET. AT LEAST 25 HOMES IN TOTAL IN THE APACHE WELLS COMMUNITY REPORTEDLY SUFFERED SOME FORM OF STORM DAMAGE. TIME ESTIMATED FROM RADAR AND NEARBY FALCON FIELD ASOS MEASUREMENT OF A 72 MP |
| Jul 15, 5:12 PM MST | TSTM WND GST 72 | 4 Nnw East Mesa, AZ | AWOS STATION KFFZ MESA FALCON FLD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phoenix, AZ (KPSR), launched 12:00Z, 11.7 hours before the alert went out and 23 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.
244
WUUS55 KPSR 152341
SVRPSR
AZC013-160030-
/O.NEW.KPSR.SV.W.0027.210715T2341Z-210716T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Phoenix AZ
441 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 530 PM MST.
* At 441 PM MST, a severe thunderstorm was located over Salt River
Indian Community, or near Mesa, and is nearly stationary.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Mesa, Scottsdale, Fountain Hills, Mesa Riverview Mall, Granite Reef
Dam, Falcon Field Airport, Salt River Indian Community, Downtown
Mesa and Fort McDowell.
* This includes the following highways...
AZ Route 87 between mile markers 174 and 194.
AZ Route 202 between mile markers 11 and 23.
AZ Route 101 between mile markers 45 and 49.
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 3359 11183 3365 11171 3366 11163 3359 11161
3341 11173 3341 11187 3351 11191
TIME...MOT...LOC 2341Z 015DEG 2KT 3346 11183
HAIL...0.88IN
WIND...60MPH
$$
JS2 follow-up statements
178
WWUS55 KPSR 152358
SVSPSR
wind
WWUS55 KPSR 000000
SVSPSR
Severe Weather Statement
National Weather Service Phoenix AZ
458 PM MST Thu Jul 15 2021
AZC013-160030-
/O.CON.KPSR.SV.W.0027.000000T0000Z-210716T0030Z/
Maricopa AZ-
458 PM MST Thu Jul 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM MST
FOR MARICOPA COUNTY...
At 457 PM MST, a severe thunderstorm was located over Mesa Riverview
Mall, or near Mesa, and is nearly stationary.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Mesa, Scottsdale, Fountain Hills, Mesa Riverview Mall, Granite Reef
Dam, Falcon Field Airport, Salt River Indian Community, Downtown Mesa
and Fort McDowell.
This includes the following highways...
AZ Route 87 between mile markers 174 and 194.
AZ Route 202 between mile markers 11 and 23.
AZ Route 101 between mile markers 45 and 49.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3359 11183 3365 11171 3366 11163 3359 11161
3341 11173 3341 11187 3351 11191
TIME...MOT...LOC 2357Z 015DEG 2KT 3345 11183
HAIL...0.88IN
WIND...60MPH
$$
JS199
WWUS55 KPSR 160022
SVSPSR
wind
WWUS55 KPSR 000000
SVSPSR
Severe Weather Statement
National Weather Service Phoenix AZ
522 PM MST Thu Jul 15 2021
AZC013-160030-
/O.CON.KPSR.SV.W.0027.000000T0000Z-210716T0030Z/
Maricopa AZ-
522 PM MST Thu Jul 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM MST
FOR MARICOPA COUNTY...
At 521 PM MST, a severe thunderstorm was located over Downtown Mesa,
or near Mesa, and is nearly stationary.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Mesa, Scottsdale, Fountain Hills, Mesa Riverview Mall, Granite Reef
Dam, Falcon Field Airport, Salt River Indian Community, Downtown Mesa
and Fort McDowell.
This includes the following highways...
AZ Route 87 between mile markers 174 and 194.
AZ Route 202 between mile markers 11 and 23.
AZ Route 101 between mile markers 45 and 49.
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 3359 11183 3365 11171 3366 11163 3359 11161
3341 11173 3341 11187 3351 11191
TIME...MOT...LOC 0021Z 015DEG 2KT 3344 11183
HAIL...0.88IN
WIND...60MPH
$$
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, 4:26 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 49 min |
| 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 |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.