Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 173, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Sep 5, 2021, 1:02 PM MST for Pima County, Santa Cruz County, Arizona. It was in force for 43 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
- Sep 5, 2021, 1:02 PM MST (20:02 UTC)
- Expired
- Sep 5, 2021, 1:45 PM MST
- In force
- 43 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Pima County, AZ, Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 66 km from the middle of the area, began a volume at 20:03 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, 8.0 hours before the alert went out and 85 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
- 1016 J/kg
- Mixed-layer CIN
- -184 J/kg
- Mixed-layer LCL
- 1856 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
551
WUUS55 KTWC 052002
SVRTWC
AZC019-023-052045-
/O.NEW.KTWC.SV.W.0173.210905T2002Z-210905T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
Issued by National Weather Service Phoenix AZ
102 PM MST Sun Sep 5 2021
The National Weather Service in Tucson has issued a
* Severe Thunderstorm Warning for...
Southeastern Pima County in southeastern Arizona...
Southwestern Santa Cruz County in southeastern Arizona...
* Until 145 PM MST.
* At 102 PM MST, a severe thunderstorm was located near Rio Rico, or
7 miles north of Nogales, moving west at 10 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Nogales, Rio Rico, Nogales International Airport, Patagonia Lake
State Park and Pena Blanca Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3134 11109 3136 11115 3152 11122 3158 11087
3141 11080 3133 11098
TIME...MOT...LOC 2002Z 070DEG 10KT 3147 11093
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Iniguez1 follow-up statement
573
WWUS55 KTWC 052043
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
143 PM MST Sun Sep 5 2021
AZC019-023-052052-
/O.EXP.KTWC.SV.W.0173.000000T0000Z-210905T2045Z/
Pima-Santa Cruz-
143 PM MST Sun Sep 5 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PIMA AND
SOUTHWESTERN SANTA CRUZ COUNTIES WILL EXPIRE AT 145 PM MST...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
LAT...LON 3134 11109 3136 11115 3152 11122 3158 11087
3141 11080 3133 11098
TIME...MOT...LOC 2042Z 070DEG 10KT 3143 11105
$$
RHThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 11:52 AM MST | Special Weather Statement | TWC | Santa Cruz | 23 min |
| Sep 5, 12:12 PM MST | Special Weather Statement | TWC | Cochise | 33 min |
| Sep 5, 12:24 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 51 min |
| Sep 5, 12:37 PM MST | Areal Flood Advisory | TWC | Cochise | 7 min |
| Sep 5, 12:44 PM MST | Flash Flood Warning | TWC | Cochise | 106 min |
| Sep 5, 12:58 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 19 min |
| Sep 5, 1:26 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 2 hr |
| Sep 5, 2:10 PM MST | Special Weather Statement | TWC | Santa Cruz | 50 min |
| Sep 5, 2:15 PM MST | Special Weather Statement | TWC | Graham | 45 min |
| Sep 5, 2:25 PM MST | Special Weather Statement | TWC | Santa Cruz | 50 min |
| Sep 5, 2:29 PM MST | Severe Thunderstorm Warning | TWC | Graham, Greenlee | 61 min |
| Sep 5, 2:31 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima | 44 min |
| Sep 5, 2:34 PM MST | Special Weather Statement | TWC | Graham | 41 min |
| Sep 5, 2:54 PM MST | Areal Flood Advisory | TWC | Pima | 111 min |
| Sep 5, 3:08 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 37 min |
| Sep 5, 3:13 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
| Sep 5, 3:15 PM MST | Tornado Warning | TWC | Pima | 15 min |
| Sep 5, 3:22 PM MST | Dust Storm Warning | TWC | Pima | 113 min |
| Sep 5, 3:24 PM MST | Severe Thunderstorm Warning | TWC | Graham, Greenlee | 66 min |
| Sep 5, 3:37 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 53 min |
| Sep 5, 3:40 PM MST | Severe Thunderstorm Warning | TWC | Pima | 50 min |
| Sep 5, 3:41 PM MST | Flash Flood Warning | TWC | Graham | 2 hr |
| Sep 5, 3:52 PM MST | Severe Thunderstorm Warning | TWC | Pima | 38 min |
| Sep 5, 3:55 PM MST | Areal Flood Advisory | TWC | Pima | 2 hr |
| Sep 5, 4:00 PM MST | Severe Thunderstorm Warning | TWC | Graham | 45 min |
| Sep 5, 4:06 PM MST | Areal Flood Advisory | TWC | Pima | 114 min |
| Sep 5, 4:12 PM MST | Flash Flood Warning | TWC | Pima | 3 hr |
| Sep 5, 4:16 PM MST | Severe Thunderstorm Warning | TWC | Pima | 59 min |
| Sep 5, 4:30 PM MST | Severe Thunderstorm Warning | TWC | Pima | 45 min |
| Sep 5, 4:42 PM MST | Dust Storm Warning | TWC | Pima, Pinal | 93 min |
| Sep 5, 4:42 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Graham | 63 min |
| Sep 5, 4:47 PM MST | Severe Thunderstorm Warning | TWC | Pima, Pinal | 43 min |
| Sep 5, 4:48 PM MST | Flash Flood Warning | TWC | Pima | 117 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.