Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 188, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Sep 5, 2021, 5:58 PM MST for Pima County, Pinal County, Arizona. It was in force for 47 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
- Sep 5, 2021, 5:58 PM MST (00:58 UTC)
- Expired
- Sep 5, 2021, 6:45 PM MST
- In force
- 47 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Pima County, AZ, Pinal County, AZ
The radar
The Tucson radar (KEMX), 88 km from the middle of the area, began a volume at 00:59 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, 1.0 hours before the alert went out and 133 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
- 48 J/kg
- Mixed-layer CIN
- -147 J/kg
- Mixed-layer LCL
- 3562 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
031
WUUS55 KTWC 060058
SVRTWC
AZC019-021-060145-
/O.NEW.KTWC.SV.W.0188.210906T0058Z-210906T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
558 PM MST Sun Sep 5 2021
The National Weather Service in Tucson has issued a
* Severe Thunderstorm Warning for...
Northeastern Pima County in southeastern Arizona...
Southeastern Pinal County in southeastern Arizona...
* Until 645 PM MST.
* At 558 PM MST, severe thunderstorms were located along a line
extending from 6 miles southeast of Dudleyville to 10 miles north
of Oracle to 17 miles north of Saddlebrooke to 18 miles southwest
of Kearny, moving southwest at 25 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Catalina, Oro Valley, Marana, Oracle, Mammoth, Saddlebrooke, San
Manuel, Tortolita, Dudleyville, Mount Lemmon/Summerhaven, Picacho
Peak State Park, Catalina State Park, Red Rock, Campo Bonito, Dove
Mountain, Oracle Junction and Biosphere 2.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3242 11071 3240 11084 3249 11124 3265 11147
3290 11106 3284 11088 3291 11078 3286 11056
3262 11065
TIME...MOT...LOC 0058Z 038DEG 21KT 3284 11068 3275 11084 3277 11100
3284 11110
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JRM2 follow-up statements
364
WWUS55 KTWC 060120
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
620 PM MST Sun Sep 5 2021
AZC019-021-060145-
/O.CON.KTWC.SV.W.0188.000000T0000Z-210906T0145Z/
Pima-Pinal-
620 PM MST Sun Sep 5 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MST
FOR NORTHERN PIMA AND SOUTHEASTERN PINAL COUNTIES...
At 620 PM MST, a severe thunderstorm was located near Saddlebrooke,
or near Oracle, moving southwest at 25 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Catalina, Oro Valley, Marana, Oracle, Saddlebrooke, Tortolita,
Catalina State Park, Oracle Junction, Biosphere 2 and Dove Mountain.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3244 11076 3240 11084 3249 11124 3261 11132
3269 11105 3272 11087 3271 11082 3259 11077
TIME...MOT...LOC 0120Z 041DEG 23KT 3260 11089
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JRM672
WWUS55 KTWC 060140
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
640 PM MST Sun Sep 5 2021
AZC019-021-060150-
/O.EXP.KTWC.SV.W.0188.000000T0000Z-210906T0145Z/
Pima-Pinal-
640 PM MST Sun Sep 5 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN PIMA AND SOUTHEASTERN
PINAL COUNTIES WILL EXPIRE AT 645 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 heavy rain 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
Tucson.
LAT...LON 3244 11076 3240 11084 3249 11124 3261 11132
3269 11105 3272 11087 3271 11082 3259 11077
TIME...MOT...LOC 0140Z 038DEG 21KT 3252 11096
$$
JRMThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 5:01 PM MST | Severe Thunderstorm Warning | TWC | Graham, Pinal | 59 min |
| Sep 5, 5:09 PM MST | Flash Flood Warning | TWC | Pima | 111 min |
| Sep 5, 5:18 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Graham, Pima | 42 min |
| Sep 5, 5:37 PM MST | Dust Storm Advisory | TWC | Pima, Pinal | 95 min |
| Sep 5, 5:41 PM MST | Flash Flood Warning | TWC | Pinal | 2 hr |
| Sep 5, 6:02 PM MST | Special Weather Statement | TWC | 43 min | |
| Sep 5, 6:39 PM MST | Areal Flood Advisory | TWC | Pima, Pinal | 2 hr |
| Sep 5, 7:05 PM MST | Special Weather Statement | TWC | Pima | 40 min |
| Sep 5, 10:09 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
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.