Alert archive / Arizona / Tornado Warnings in 2021
Tornado Warning 1, NWS Tucson, AZ
NWS Tucson, AZ issued this tornado warning at Jul 9, 2021, 3:29 PM MST for Pima County, Arizona. It was in force for 31 min. 1 report 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
- Jul 9, 2021, 3:29 PM MST (22:29 UTC)
- Expired
- Jul 9, 2021, 4:00 PM MST
- In force
- 31 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.25 in
County Pima County, AZ
The radar
The Tucson radar (KEMX), 86 km from the middle of the area, began a volume at 22:29 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 |
|---|---|---|---|
| Jul 9, 4:05 PM MST | TSTM WND GST 66 | 28 Ssw Three Points, 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 12:00Z, 10.5 hours before the alert went out and 80 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.
687
WFUS55 KTWC 092229
TORTWC
AZC019-092300-
/O.NEW.KTWC.TO.W.0001.210709T2229Z-210709T2300Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tucson AZ
329 PM MST Fri Jul 9 2021
The National Weather Service in Tucson has issued a
* Tornado Warning for...
South central Pima County in southeastern Arizona...
* Until 400 PM MST.
* At 329 PM MST, a severe thunderstorm capable of producing a tornado
was located 9 miles northwest of Arivaca, moving west at 15 mph.
HAZARD...Tornado and half dollar size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This tornadic thunderstorm will remain over mainly remote areas of
south central Pima County.
This includes Route 286 between mile markers 8 and 16.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3171 11140 3165 11138 3155 11163 3169 11167
TIME...MOT...LOC 2229Z 076DEG 12KT 3166 11145
TORNADO...RADAR INDICATED
HAIL...1.25IN
$$
Carpenter2 follow-up statements
238
WWUS55 KTWC 092246
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
346 PM MST Fri Jul 9 2021
AZC019-092300-
/O.CON.KTWC.TO.W.0001.000000T0000Z-210709T2300Z/
Pima-
346 PM MST Fri Jul 9 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM MST FOR SOUTH
CENTRAL PIMA COUNTY...
At 346 PM MST, a severe thunderstorm capable of producing a tornado
was located 11 miles northwest of Arivaca, moving west at 15 mph.
HAZARD...Tornado and half dollar size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly remote areas of
south central Pima County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3170 11152 3164 11150 3160 11164 3169 11167
TIME...MOT...LOC 2246Z 076DEG 12KT 3165 11151
TORNADO...RADAR INDICATED
HAIL...1.25IN
$$
Carpenter563
WWUS55 KTWC 092258
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
358 PM MST Fri Jul 9 2021
AZC019-092307-
/O.EXP.KTWC.TO.W.0001.000000T0000Z-210709T2300Z/
Pima-
358 PM MST Fri Jul 9 2021
...THE TORNADO WARNING FOR SOUTH CENTRAL PIMA COUNTY WILL EXPIRE AT
400 PM MST...
The tornado threat has diminished and the Tornado Warning will be
allowed to expire. However, large hail and damaging winds remain
likely and a Severe Thunderstorm Warning remains in effect for the
area.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Tucson.
LAT...LON 3170 11152 3164 11150 3160 11164 3169 11167
TIME...MOT...LOC 2257Z 076DEG 12KT 3164 11154
$$
CarpenterThe 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, 3:45 PM MST | Severe Thunderstorm Warning | TWC | Pima | 30 min |
| Jul 9, 3:52 PM MST | Flash Flood Warning | TWC | Pima | 113 min |
| Jul 9, 4:08 PM MST | Severe Thunderstorm Warning | TWC | Pima | 52 min |
| Jul 9, 4:58 PM MST | Severe Thunderstorm Warning | TWC | Graham, Pinal | 19 min |
Nearby
Tornado Warnings in Arizona, 2021Every tornado warning in 2021Tornadoes 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.