Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 152, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 23, 2021, 1:50 PM MST for Cochise 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 23, 2021, 1:50 PM MST (20:50 UTC)
- Expired
- Aug 23, 2021, 2:30 PM MST
- In force
- 40 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 68 km from the middle of the area, began a volume at 20:52 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, 8.8 hours before the alert went out and 107 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2559 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
389
WUUS55 KTWC 232050
SVRTWC
AZC003-232130-
/O.NEW.KTWC.SV.W.0152.210823T2050Z-210823T2130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
150 PM MST Mon Aug 23 2021
The National Weather Service in Tucson has issued a
* Severe Thunderstorm Warning for...
Southwestern Cochise County in southeastern Arizona...
* Until 230 PM MST.
* At 149 PM MST, a severe thunderstorm was located near Hereford, or
near Sierra Vista, moving northeast at 5 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...
Sierra Vista and Hereford.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3139 11009 3148 11022 3167 11010 3156 10991
TIME...MOT...LOC 2049Z 211DEG 7KT 3148 11011
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
AH2 follow-up statements
499 WWUS55 KTWC 232108 SVSTWC Severe Weather Statement National Weather Service Tucson AZ 208 PM MST Mon Aug 23 2021 AZC003-232130- /O.CON.KTWC.SV.W.0152.000000T0000Z-210823T2130Z/ Cochise- 208 PM MST Mon Aug 23 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM MST FOR SOUTH CENTRAL COCHISE COUNTY... At 208 PM MST, a severe thunderstorm was located 8 miles east of Sierra Vista, moving northeast at 10 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. This severe thunderstorm will remain over mainly remote areas of south central Cochise County. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3143 11005 3152 11017 3167 11010 3156 10991 TIME...MOT...LOC 2108Z 211DEG 7KT 3151 11009 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ AH
943
WWUS55 KTWC 232124
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
224 PM MST Mon Aug 23 2021
AZC003-232133-
/O.EXP.KTWC.SV.W.0152.000000T0000Z-210823T2130Z/
Cochise-
224 PM MST Mon Aug 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL COCHISE COUNTY
WILL EXPIRE AT 230 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 3143 11005 3152 11017 3167 11010 3156 10991
TIME...MOT...LOC 2123Z 211DEG 7KT 3153 11008
$$
AHThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 6:24 PM MST | Special Weather Statement | TWC | Cochise | 36 min |
| Aug 23, 12:11 PM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
| Aug 23, 12:42 PM MST | Flash Flood Warning | TWC | Cochise | 3 hr |
| Aug 23, 1:12 PM MST | Special Weather Statement | TWC | Cochise | 48 min |
| Aug 23, 1:26 PM MST | Special Weather Statement | TWC | Cochise | 49 min |
| Aug 23, 1:28 PM MST | Areal Flood Advisory | TWC | Cochise | 2 hr |
| Aug 23, 1:42 PM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
| Aug 23, 1:54 PM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
| Aug 23, 2:09 PM MST | Excessive Heat Watch | TWC | Pima, Pinal | 24 hr |
| Aug 23, 2:13 PM MST | Special Weather Statement | TWC | Cochise | 47 min |
| Aug 23, 2:22 PM MST | Flash Flood Warning | TWC | Cochise | 3 hr |
| Aug 23, 2:37 PM MST | Special Weather Statement | TWC | Cochise | 38 min |
| Aug 23, 2:43 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 24 min |
| Aug 23, 3:00 PM MST | Special Weather Statement | TWC | Cochise | 45 min |
| Aug 23, 3:32 PM MST | Areal Flood Advisory | TWC | Cochise | 118 min |
| Aug 23, 4:03 PM MST | Special Weather Statement | TWC | Graham | 42 min |
| Aug 23, 4:37 PM MST | Severe Thunderstorm Warning | TWC | Graham, Greenlee | 38 min |
| Aug 23, 4:59 PM MST | Flash Flood Warning | TWC | Graham | 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.