Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 191, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Sep 7, 2021, 6:20 PM MST for Cochise County, Arizona. It was in force for 55 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 7, 2021, 6:20 PM MST (01:20 UTC)
- Expired
- Sep 7, 2021, 7:15 PM MST
- In force
- 55 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 76 km from the middle of the area, began a volume at 01:20 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 7, 6:55 PM MST | HAIL 1.25 | 10 W Bisbee, AZ | |
| Sep 7, 7:15 PM MST | HAIL 2 | 10 Sse Sierra Vista, AZ |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 1.3 hours before the alert went out and 116 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
- 2033 J/kg
- Mixed-layer CIN
- -116 J/kg
- Mixed-layer LCL
- 2247 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted.
508
WUUS55 KTWC 080120
SVRTWC
AZC003-080215-
/O.NEW.KTWC.SV.W.0191.210908T0120Z-210908T0215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
620 PM MST Tue Sep 7 2021
The National Weather Service in Tucson has issued a
* Severe Thunderstorm Warning for...
Southwestern Cochise County in southeastern Arizona...
* Until 715 PM MST.
* At 620 PM MST, a severe thunderstorm was located near Naco, or 7
miles west of Bisbee, moving west at 10 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* Locations impacted include...
Sierra Vista, Bisbee, Hereford, Naco, Palominas, Coronado National
Memorial and Ramsey Canyon Preserve.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3139 10995 3133 10995 3133 11031 3148 11032
TIME...MOT...LOC 0120Z 094DEG 10KT 3137 11004
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$1 follow-up statement
082
WWUS55 KTWC 080147
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
647 PM MST Tue Sep 7 2021
AZC003-080215-
/O.CON.KTWC.SV.W.0191.000000T0000Z-210908T0215Z/
Cochise-
647 PM MST Tue Sep 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM MST
FOR SOUTHWESTERN COCHISE COUNTY...
At 646 PM MST, a severe thunderstorm was located near Hereford, or
10 miles west of Bisbee, moving west at 20 mph. Large Ping pong
sized hail is likely, especially along State Highway 92.
HAZARD...Ping pong ball size hail and 60 mph wind gusts, especially
along State Highway 92.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Sierra Vista, Bisbee, Hereford, Naco, Palominas, Coronado National
Memorial and Ramsey Canyon Preserve.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3139 10995 3133 10995 3133 11031 3148 11032
TIME...MOT...LOC 0146Z 090DEG 17KT 3138 11008
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 5:13 PM MST | Special Weather Statement | TWC | Cochise | 47 min |
| Sep 7, 5:18 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 42 min |
| Sep 7, 5:53 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 67 min |
| Sep 7, 6:43 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 32 min |
| Sep 7, 7:15 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Santa Cruz | 25 min |
| Sep 7, 7:44 PM MST | Special Weather Statement | TWC | Cochise | 46 min |
| Sep 7, 7:56 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 49 min |
| Sep 7, 8:47 PM MST | Special Weather Statement | TWC | Cochise | 43 min |
| Sep 8, 4:45 PM MST | Special Weather Statement | TWC | 45 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.