Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 8, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 9, 2021, 8:58 PM MST for Gila County, Maricopa County, Pinal County, Arizona. It was in force for 47 min. 1 report 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 9, 2021, 8:58 PM MST (03:58 UTC)
- Expired
- Jul 9, 2021, 9:45 PM MST
- In force
- 47 min
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Gila County, AZ, Maricopa County, AZ, Pinal County, AZ
The radar
The Phoenix radar (KIWA), 80 km from the middle of the area, began a volume at 03:58 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 9, 9:18 PM MST | TSTM WND DMG | Miami, AZ | ***DELAYED REPORT...MATURE APPLE TREE FELL ON PARKING LOT AT CHURCH NEAR SULLIVAN STREET AND DAVIS CANYON ROAD. TIME ESTIMATED BY RADAR. |
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 00:00Z, 4.0 hours before the alert went out and 102 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
- 1011 J/kg
- Mixed-layer CIN
- -182 J/kg
- Mixed-layer LCL
- 3280 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- -35 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
681
WUUS55 KPSR 100358
SVRPSR
AZC007-013-021-100445-
/O.NEW.KPSR.SV.W.0008.210710T0358Z-210710T0445Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Phoenix AZ
858 PM MST Fri Jul 9 2021
The National Weather Service in Phoenix has issued a
* Severe Thunderstorm Warning for...
Gila County in east central Arizona...
Maricopa County in south central Arizona...
Pinal County in southeastern Arizona...
* Until 945 PM MST.
* At 857 PM MST, severe thunderstorms were located along a line
extending from 21 miles east of Tonto National Monument to 14 miles
west of Hilltop to 10 miles north of Cutter, moving southwest at 10
mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Globe, Roosevelt, Miami, Cutter, Central Heights-Midland City,
Tonto National Monument, Roosevelt Dam, Claypool, Top-Of-The-World,
Inspiration and Roosevelt Estates.
* This includes the following highways...
US Highway 60 between mile markers 236 and 275.
AZ Route 70 between mile markers 253 and 263.
AZ Route 77 between mile markers 161 and 170.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
If on or near Roosevelt Lake, get away from the water and move
indoors or inside a vehicle. Remember, lightning can strike out to
15 miles from the parent thunderstorm. If you can hear thunder, you
are close enough to be struck by lightning. Move to safe shelter
now! Do not be caught on the water in a thunderstorm.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3319 11088 3378 11127 3380 11113 3376 11099
3374 11096 3364 11092 3368 11084 3366 11078
3378 11069 3341 11044
TIME...MOT...LOC 0357Z 065DEG 10KT 3375 11077 3361 11068 3350 11061
HAIL...0.88IN
WIND...60MPH
$$
SDB2 follow-up statements
289
WWUS55 KPSR 100425
SVSPSR
Severe Weather Statement
National Weather Service Phoenix AZ
925 PM MST Fri Jul 9 2021
AZC007-013-021-100445-
/O.CON.KPSR.SV.W.0008.000000T0000Z-210710T0445Z/
Gila AZ-Maricopa AZ-Pinal AZ-
925 PM MST Fri Jul 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM MST
FOR GILA...MARICOPA AND PINAL COUNTIES...
At 924 PM MST, severe thunderstorms were located along a line
extending from 7 miles southeast of Tonto National Monument to near
Miami to near Globe, moving southwest at 20 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Globe, Roosevelt, Miami, Cutter, Central Heights-Midland City, Tonto
National Monument, Roosevelt Dam, Claypool, Top-Of-The-World,
Inspiration and Roosevelt Estates.
This includes the following highways...
US Highway 60 between mile markers 236 and 263.
AZ Route 70 between mile markers 253 and 263.
AZ Route 77 between mile markers 161 and 170.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
If on or near Roosevelt Lake, get away from the water and move
indoors or inside a vehicle. remember, lightning can strike out to
15 miles from the parent thunderstorm. If you can hear thunder, you
are close enough to be struck by lightning. Move to safe shelter
now! Do not be caught on the water in a thunderstorm.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3319 11088 3378 11127 3380 11113 3376 11099
3374 11096 3364 11092 3368 11084 3366 11078
3335 11055
TIME...MOT...LOC 0424Z 054DEG 17KT 3359 11100 3343 11090 3331 11080
HAIL...0.88IN
WIND...60MPH
$$
SDB198
WWUS55 KPSR 100443
SVSPSR
Severe Weather Statement
National Weather Service Phoenix AZ
943 PM MST Fri Jul 9 2021
AZC007-013-021-100452-
/O.EXP.KPSR.SV.W.0008.000000T0000Z-210710T0445Z/
Gila AZ-Maricopa AZ-Pinal AZ-
943 PM MST Fri Jul 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR GILA...MARICOPA AND PINAL
COUNTIES WILL EXPIRE AT 945 PM MST...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with these thunderstorms.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Phoenix.
LAT...LON 3319 11088 3378 11127 3380 11113 3376 11099
3374 11096 3364 11092 3368 11084 3366 11078
3335 11055
TIME...MOT...LOC 0442Z 065DEG 10KT 3357 11105 3341 11095 3329 11085
$$
SDBThe office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 5:36 PM MST | Flash Flood Warning | PSR | Gila | 6 hr |
| Jul 9, 5:36 PM MST | Special Weather Statement | PSR | Gila | 24 min |
| Jul 9, 6:23 PM MST | Special Weather Statement | PSR | 52 min | |
| Jul 9, 7:45 PM MST | Special Weather Statement | PSR | 30 min | |
| Jul 9, 8:15 PM MST | Severe Thunderstorm Warning | PSR | Gila | 45 min |
| Jul 9, 9:18 PM MST | Flash Flood Warning | PSR | Gila | 4 hr |
| Jul 9, 9:18 PM MST | Special Weather Statement | PSR | Pinal | 42 min |
| Jul 9, 9:32 PM MST | Flash Flood Warning | PSR | Gila, Pinal | 4 hr |
| Jul 9, 9:39 PM MST | Severe Thunderstorm Warning | PSR | Gila, Maricopa, Pinal | 36 min |
| Jul 9, 9:54 PM MST | Dust Storm Advisory | PSR | Maricopa, Pinal | 51 min |
| Jul 9, 10:06 PM MST | Severe Thunderstorm Warning | PSR | Maricopa, Pinal | 39 min |
| Jul 9, 10:21 PM MST | Dust Storm Warning | PSR | Maricopa, Pinal | 54 min |
| Jul 9, 10:30 PM MST | Severe Thunderstorm Warning | PSR | Maricopa, Pinal | 45 min |
| Jul 9, 10:32 PM MST | Flash Flood Warning | PSR | Pinal | 4 hr |
| Jul 9, 10:44 PM MST | Severe Thunderstorm Warning | PSR | Maricopa, Pinal | 31 min |
| Jul 9, 10:52 PM MST | Areal Flood Advisory | PSR | Maricopa, Pinal | 3 hr |
| Jul 9, 11:12 PM MST | Dust Storm Advisory | PSR | Maricopa | 63 min |
| Jul 9, 11:15 PM MST | Dust Storm Warning | PSR | Maricopa, Pinal | 60 min |
| Jul 9, 11:19 PM MST | Severe Thunderstorm Warning | PSR | Pinal | 26 min |
| Jul 9, 11:22 PM MST | Severe Thunderstorm Warning | PSR | Maricopa, Pinal | 38 min |
| Jul 9, 11:31 PM MST | Dust Storm Advisory | PSR | Maricopa | 44 min |
| Jul 9, 11:33 PM MST | Flash Flood Warning | PSR | Maricopa, Pinal | 4 hr |
| Jul 10, 1:02 AM MST | Special Weather Statement | PSR | Yuma | 28 min |
| Jul 10, 1:57 PM MST | Blowing Dust Advisory | PSR | Maricopa, Pinal | 9 hr |
| Jul 10, 2:27 PM MST | Special Weather Statement | PSR | Gila | 48 min |
| Jul 10, 3:15 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.