Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 33, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 10, 2021, 5:14 PM MST for Cochise County, Graham County, Arizona. It was in force for 61 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
- Jul 10, 2021, 5:14 PM MST (00:14 UTC)
- Expired
- Jul 10, 2021, 6:15 PM MST
- In force
- 61 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Cochise County, AZ, Graham County, AZ
The radar
The Tucson radar (KEMX), 112 km from the middle of the area, began a volume at 00:16 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, 0.2 hours before the alert went out and 114 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
- 1025 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 3304 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
530
WUUS55 KTWC 110014
SVRTWC
AZC003-009-110115-
/O.NEW.KTWC.SV.W.0033.210711T0014Z-210711T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
514 PM MST Sat Jul 10 2021
The National Weather Service in Tucson has issued a
* Severe Thunderstorm Warning for...
South central Graham County in southeastern Arizona...
Northern Cochise County in southeastern Arizona...
* Until 615 PM MST.
* At 514 PM MST, a severe thunderstorm was located near Roper Lake
State Park, or 10 miles south of Safford, moving southwest 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...
Safford, Thatcher, Roper Lake State Park, Swift Trail Junction,
Fort Grant, Mount Graham, Bonita and Frye Mesa Dam.
This includes the following highways...
Route 191 between mile markers 99 and 118.
Route 266 between mile markers 105 and 126.
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 3283 10978 3271 10954 3232 10980 3242 11013
TIME...MOT...LOC 0014Z 035DEG 15KT 3267 10971
HAIL...1.00IN
WIND...60MPH
$$
GL2 follow-up statements
796
WWUS55 KTWC 110033
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
533 PM MST Sat Jul 10 2021
AZC003-009-110115-
/O.CON.KTWC.SV.W.0033.000000T0000Z-210711T0115Z/
Graham-Cochise-
533 PM MST Sat Jul 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM MST
FOR SOUTH CENTRAL GRAHAM AND NORTHERN COCHISE COUNTIES...
At 532 PM MST, a severe thunderstorm was located 9 miles north of
Willcox, moving south at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Safford, Thatcher, Roper Lake State Park, Swift Trail Junction, Fort
Grant, Mount Graham, Bonita and Frye Mesa Dam.
This includes the following highways...
Route 191 between mile markers 99 and 118.
Route 266 between mile markers 105 and 126.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3283 10978 3271 10954 3232 10980 3242 11013
TIME...MOT...LOC 0032Z 016DEG 14KT 3238 10982
HAIL...1.00IN
WIND...60MPH
$$
GL313
WWUS55 KTWC 110057
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
557 PM MST Sat Jul 10 2021
AZC003-009-110115-
/O.CON.KTWC.SV.W.0033.000000T0000Z-210711T0115Z/
Graham-Cochise-
557 PM MST Sat Jul 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM MST
FOR SOUTH CENTRAL GRAHAM AND NORTHERN COCHISE COUNTIES...
At 557 PM MST, a severe thunderstorm was located 14 miles northwest
of Willcox, moving southwest 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...
Fort Grant and Bonita.
This includes Route 266 between mile markers 112 and 126.
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 3265 10993 3251 10970 3243 10973 3232 10980
3242 11013
TIME...MOT...LOC 0057Z 057DEG 11KT 3243 10997
HAIL...1.00IN
WIND...60MPH
$$
GLThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 5:10 PM MST | Flash Flood Warning | TWC | Cochise | 2 hr |
| Jul 10, 5:15 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 45 min |
| Jul 10, 5:23 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 52 min |
| Jul 10, 5:30 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 60 min |
| Jul 10, 5:42 PM MST | Flash Flood Warning | TWC | Santa Cruz | 2 hr |
| Jul 10, 5:46 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima, Santa Cruz | 59 min |
| Jul 10, 6:05 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 40 min |
| Jul 10, 6:13 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Graham | 26 min |
| Jul 10, 6:22 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 53 min |
| Jul 10, 6:50 PM MST | Special Weather Statement | TWC | 25 min | |
| Jul 10, 6:57 PM MST | Dust Storm Warning | TWC | Pima, Santa Cruz | 63 min |
| Jul 10, 6:57 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 48 min |
| Jul 10, 7:06 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima | 39 min |
| Jul 10, 7:07 PM MST | Dust Storm Warning | TWC | Pima, Pinal | 83 min |
| Jul 10, 7:14 PM MST | Severe Thunderstorm Warning | TWC | Pima | 61 min |
| Jul 10, 7:29 PM MST | Flash Flood Warning | TWC | Cochise, Pima | 2 hr |
| Jul 10, 7:35 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima | 55 min |
| Jul 10, 8:00 PM MST | Dust Storm Warning | TWC | Pima, Pinal | 86 min |
| Jul 10, 8:06 PM MST | Severe Thunderstorm Warning | TWC | Pima | 39 min |
| Jul 10, 8:12 PM MST | Severe Thunderstorm Warning | TWC | Pima | 48 min |
| Jul 10, 8:22 PM MST | Flash Flood Warning | TWC | Pima | 113 min |
| Jul 10, 8:29 PM MST | Severe Thunderstorm Warning | TWC | Pima | 61 min |
| Jul 10, 8:40 PM MST | Severe Thunderstorm Warning | TWC | Pima, Pinal | 66 min |
| Jul 10, 8:41 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
| Jul 10, 8:48 PM MST | Areal Flood Advisory | TWC | Pima | 117 min |
| Jul 10, 8:51 PM MST | Areal Flood Advisory | TWC | Pima | 114 min |
| Jul 10, 8:51 PM MST | Tornado Warning | TWC | Pima | 14 min |
| Jul 10, 9:45 PM MST | Special Weather Statement | TWC | 60 min | |
| Jul 10, 10:03 PM MST | Severe Thunderstorm Warning | TWC | Pima | 42 min |
| Jul 10, 10:20 PM MST | Areal Flood Advisory | TWC | Pima, Pinal | 3 hr |
| Jul 10, 10:36 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Jul 11, 4:12 PM MST | Special Weather Statement | TWC | Greenlee | 33 min |
| Jul 11, 4:44 PM MST | Special Weather Statement | TWC | Greenlee | 46 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.