Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 165, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 28, 2021, 5:20 PM MST for Pinal County, Arizona. It was in force for 40 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 28, 2021, 5:20 PM MST (00:20 UTC)
- Expired
- Aug 28, 2021, 6:00 PM MST
- In force
- 40 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Pinal County, AZ
The radar
The Phoenix radar (KIWA), 86 km from the middle of the area, began a volume at 00:22 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
Tuscon, AZ (KTUS), launched 00:00Z, 0.3 hours before the alert went out and 92 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
- 68 J/kg
- Mixed-layer CIN
- -165 J/kg
- Mixed-layer LCL
- 2343 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
986
WUUS55 KTWC 290020
SVRTWC
AZC021-290100-
/O.NEW.KTWC.SV.W.0165.210829T0020Z-210829T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
520 PM MST Sat Aug 28 2021
The National Weather Service in Tucson has issued a
* Severe Thunderstorm Warning for...
Northeastern Pinal County in southeastern Arizona...
* Until 600 PM MST.
* At 520 PM MST, a severe thunderstorm was located over Kearny, or
near Hayden, moving west at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Kearny and Dudleyville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3298 11078 3299 11076 3300 11076 3303 11072
3293 11063 3285 11095 3308 11106 3311 11086
TIME...MOT...LOC 0020Z 071DEG 12KT 3304 11087
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
GL2 follow-up statements
528
WWUS55 KTWC 290037
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
537 PM MST Sat Aug 28 2021
AZC021-290100-
/O.CON.KTWC.SV.W.0165.000000T0000Z-210829T0100Z/
Pinal-
537 PM MST Sat Aug 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM MST
FOR NORTHEASTERN PINAL COUNTY...
At 536 PM MST, a severe thunderstorm was located over Kearny, or 8
miles west of Hayden, moving west at 15 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Kearny and Dudleyville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3298 11078 3299 11076 3300 11076 3303 11072
3293 11063 3285 11095 3308 11106 3311 11086
TIME...MOT...LOC 0036Z 071DEG 12KT 3302 11093
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
GL537
WWUS55 KTWC 290057
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
557 PM MST Sat Aug 28 2021
AZC021-290107-
/O.EXP.KTWC.SV.W.0165.000000T0000Z-210829T0100Z/
Pinal-
557 PM MST Sat Aug 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PINAL COUNTY WILL
EXPIRE AT 600 PM MST...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire. However gusty winds resulting in dense blowing
dust and heavy rain are still possible with this thunderstorm.
LAT...LON 3298 11078 3299 11076 3300 11076 3303 11072
3293 11063 3285 11095 3308 11106 3311 11086
TIME...MOT...LOC 0057Z 071DEG 12KT 3301 11097
$$The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 5:03 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 117 min |
| Aug 28, 5:12 PM MST | Special Weather Statement | TWC | Pinal | 48 min |
| Aug 28, 6:31 PM MST | Severe Thunderstorm Warning | TWC | Pima | 44 min |
| Aug 28, 6:47 PM MST | Special Weather Statement | TWC | Pinal | 43 min |
| Aug 28, 7:01 PM MST | Areal Flood Warning | TWC | Pima, Pinal | 3 hr |
| Aug 28, 7:14 PM MST | Severe Thunderstorm Warning | TWC | Pima | 61 min |
| Aug 28, 7:41 PM MST | Flash Flood Warning | TWC | Pima | 109 min |
| Aug 28, 8:03 PM MST | Severe Thunderstorm Warning | TWC | Pima | 57 min |
| Aug 28, 8:25 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
| Aug 29, 2:32 PM MST | Special Weather Statement | TWC | Cochise | 43 min |
| Aug 29, 3:53 PM MST | Special Weather Statement | TWC | Pima | 37 min |
| Aug 29, 4:23 PM MST | Areal Flood Advisory | TWC | Pima | 112 min |
| Aug 29, 4:46 PM MST | Special Weather Statement | TWC | Pinal | 59 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.