Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 24, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 9, 2021, 4:08 PM MST for Pima County, Arizona. It was in force for 52 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 9, 2021, 4:08 PM MST (23:08 UTC)
- Expired
- Jul 9, 2021, 5:00 PM MST
- In force
- 52 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Pima County, AZ
The radar
The Tucson radar (KEMX), 108 km from the middle of the area, began a volume at 23:10 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, 11.1 hours before the alert went out and 92 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
- 1372 J/kg
- Mixed-layer CIN
- -170 J/kg
- Mixed-layer LCL
- 1795 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
906
WUUS55 KTWC 092308
SVRTWC
AZC019-100000-
/O.NEW.KTWC.SV.W.0024.210709T2308Z-210710T0000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
408 PM MST Fri Jul 9 2021
The National Weather Service in Tucson has issued a
* Severe Thunderstorm Warning for...
South central Pima County in southeastern Arizona...
* Until 500 PM MST.
* At 407 PM MST, a severe thunderstorm was located near Topawa, or 10
miles southeast of Sells, moving west at 20 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Sells, Topawa, San Miguel, Ali Chukson, Vamori, Cowlic, Choulic,
Coldfields, Fresnal Canyon, Artesia, Ali Molina, South Komelik and
Itak.
This includes Route 86 between mile markers 110 and 120.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3190 11159 3156 11158 3166 11207 3197 11202
TIME...MOT...LOC 2307Z 103DEG 21KT 3181 11175
HAIL...1.25IN
WIND...60MPH
$$1 follow-up statement
229
WWUS55 KTWC 092352
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
452 PM MST Fri Jul 9 2021
AZC019-100002-
/O.EXP.KTWC.SV.W.0024.000000T0000Z-210710T0000Z/
Pima-
452 PM MST Fri Jul 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL PIMA COUNTY WILL
EXPIRE AT 500 PM MST...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
LAT...LON 3190 11159 3156 11158 3166 11207 3197 11202
TIME...MOT...LOC 2352Z 103DEG 21KT 3187 11203
$$The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 5:17 PM MST | Special Weather Statement | TWC | 43 min | |
| Jul 9, 2:52 PM MST | Special Weather Statement | TWC | Santa Cruz | 23 min |
| Jul 9, 3:06 PM MST | Severe Thunderstorm Warning | TWC | Pima | 39 min |
| Jul 9, 3:29 PM MST | Tornado Warning | TWC | Pima | 31 min |
| Jul 9, 3:45 PM MST | Severe Thunderstorm Warning | TWC | Pima | 30 min |
| Jul 9, 3:52 PM MST | Flash Flood Warning | TWC | Pima | 113 min |
| Jul 9, 4:58 PM MST | Severe Thunderstorm Warning | TWC | Graham, Pinal | 19 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.