Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 156, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 26, 2021, 2:46 PM MST for Cochise County, Pima County, Arizona. It was in force for 44 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 26, 2021, 2:46 PM MST (21:46 UTC)
- Expired
- Aug 26, 2021, 3:30 PM MST
- In force
- 44 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Cochise County, AZ, Pima County, AZ
The radar
The Tucson radar (KEMX), 19 km from the middle of the area, began a volume at 21:47 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 12:00Z, 9.8 hours before the alert went out and 40 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
- 410 J/kg
- Mixed-layer CIN
- -282 J/kg
- Mixed-layer LCL
- 2554 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- -13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
937
WUUS55 KTWC 262146
SVRTWC
AZC003-019-262230-
/O.NEW.KTWC.SV.W.0156.210826T2146Z-210826T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
246 PM MST Thu Aug 26 2021
The National Weather Service in Tucson has issued a
* Severe Thunderstorm Warning for...
East central Pima County in southeastern Arizona...
West central Cochise County in southeastern Arizona...
* Until 330 PM MST.
* At 245 PM MST, a severe thunderstorm was located 10 miles east of
Vail, or 13 miles northwest of Benson, moving northeast at 10 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...
Saguaro National Park East and Mescal.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3192 11049 3199 11067 3221 11056 3212 11032
TIME...MOT...LOC 2145Z 206DEG 9KT 3204 11052
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
AH2 follow-up statements
680
WWUS55 KTWC 262201
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
301 PM MST Thu Aug 26 2021
AZC003-019-262230-
/O.CON.KTWC.SV.W.0156.000000T0000Z-210826T2230Z/
Pima-Cochise-
301 PM MST Thu Aug 26 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM MST
FOR EAST CENTRAL PIMA AND WEST CENTRAL COCHISE COUNTIES...
At 301 PM MST, a severe thunderstorm was located 10 miles east of
Vail, or 13 miles northwest of Benson, and is nearly stationary.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Saguaro National Park East and Mescal.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3192 11049 3199 11067 3221 11056 3212 11032
TIME...MOT...LOC 2201Z 211DEG 4KT 3203 11052
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
AH197
WWUS55 KTWC 262223
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
323 PM MST Thu Aug 26 2021
AZC003-019-262233-
/O.EXP.KTWC.SV.W.0156.000000T0000Z-210826T2230Z/
Pima-Cochise-
323 PM MST Thu Aug 26 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PIMA AND WEST
CENTRAL COCHISE COUNTIES WILL EXPIRE AT 330 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.
LAT...LON 3192 11049 3199 11067 3221 11056 3212 11032
TIME...MOT...LOC 2223Z 206DEG 9KT 3207 11050
$$
AHThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 2:17 PM MST | Special Weather Statement | TWC | 43 min | |
| Aug 26, 2:43 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 47 min |
| Aug 26, 2:49 PM MST | Special Weather Statement | TWC | 41 min | |
| Aug 26, 3:40 PM MST | Special Weather Statement | TWC | Pima | 50 min |
| Aug 26, 3:45 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Aug 26, 4:01 PM MST | Severe Thunderstorm Warning | TWC | Pima | 44 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.