Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 89, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 22, 2021, 4:01 PM MST for Pima County, Arizona. It was in force for 59 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 22, 2021, 4:01 PM MST (23:01 UTC)
- Expired
- Jul 22, 2021, 5:00 PM MST
- In force
- 59 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Pima County, AZ
The radar
The Tucson radar (KEMX), 40 km from the middle of the area, began a volume at 23:03 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 22, 4:40 PM MST | HAIL 0.88 | 5 Ene Tucson, AZ | SPOTTER REPORTED NICKEL SIZED HAIL AT 5TH AND PANTANO. |
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, 11.0 hours before the alert went out and 3 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
- 970 J/kg
- Mixed-layer CIN
- -227 J/kg
- Mixed-layer LCL
- 1720 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- -68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
893
WUUS55 KTWC 222301
SVRTWC
AZC019-230000-
/O.NEW.KTWC.SV.W.0089.210722T2301Z-210723T0000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
401 PM MST Thu Jul 22 2021
The National Weather Service in Tucson has issued a
* Severe Thunderstorm Warning for...
Northeastern Pima County in southeastern Arizona...
* Until 500 PM MST.
* At 400 PM MST, a severe thunderstorm was located over Tucson, and
is nearly stationary.
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...
Tucson, Davis-Monthan Air Force Base, Casas Adobes, Drexel Heights,
Flowing Wells, Tanque Verde, South Tucson, Sabino Canyon Recreation
Area, Catalina Foothills, Tucson International Airport, Summit,
Tucson Estates, Saguaro National Park East, Rita Ranch and San
Xavier Mission.
This includes the following highways...
Interstate 10 between mile markers 252 and 271.
Interstate 19 between mile markers 56 and 63.
Route 77 between mile markers 70 and 73.
Route 86 between mile markers 166 and 171.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3210 11071 3208 11105 3229 11112 3235 11078
TIME...MOT...LOC 2300Z 155DEG 4KT 3219 11089
HAIL...1.00IN
WIND...60MPH
$$
GL3 follow-up statements
534
WWUS55 KTWC 222321
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
421 PM MST Thu Jul 22 2021
AZC019-230000-
/O.CON.KTWC.SV.W.0089.000000T0000Z-210723T0000Z/
Pima-
421 PM MST Thu Jul 22 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM MST
FOR NORTHEASTERN PIMA COUNTY...
At 421 PM MST, a severe thunderstorm was located over Davis-Monthan
Air Force Base, moving north at 5 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Tucson, Davis-Monthan Air Force Base, Casas Adobes, Drexel Heights,
Flowing Wells, Tanque Verde, South Tucson, Sabino Canyon Recreation
Area, Catalina Foothills, Tucson International Airport, Summit,
Tucson Estates, Saguaro National Park East, Rita Ranch and San Xavier
Mission.
This includes the following highways...
Interstate 10 between mile markers 252 and 271.
Interstate 19 between mile markers 56 and 63.
Route 77 between mile markers 70 and 73.
Route 86 between mile markers 166 and 171.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3210 11071 3208 11105 3229 11112 3235 11078
TIME...MOT...LOC 2321Z 159DEG 5KT 3218 11085
HAIL...1.00IN
WIND...60MPH
$$
GL535 WWUS55 KTWC 222346 SVSTWC Severe Weather Statement National Weather Service Tucson AZ 446 PM MST Thu Jul 22 2021 AZC019-230000- /O.CON.KTWC.SV.W.0089.000000T0000Z-210723T0000Z/ Pima- 446 PM MST Thu Jul 22 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM MST FOR NORTHEASTERN PIMA COUNTY... At 446 PM MST, a severe thunderstorm was located near Tanque Verde, or near Davis-Monthan Air Force Base, moving north at 5 mph. HAZARD...60 mph wind gusts and nickel size hail. SOURCE...Trained weather spotters. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Tucson, Davis-Monthan Air Force Base, Casas Adobes, Drexel Heights, Flowing Wells, Tanque Verde, South Tucson, Sabino Canyon Recreation Area, Catalina Foothills, Tucson International Airport, Summit, Tucson Estates, Saguaro National Park East, Rita Ranch and San Xavier Mission. This includes the following highways... Interstate 10 between mile markers 252 and 271. Interstate 19 between mile markers 56 and 63. Route 77 between mile markers 70 and 73. Route 86 between mile markers 166 and 171. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3210 11071 3208 11105 3229 11112 3235 11078 TIME...MOT...LOC 2346Z 173DEG 5KT 3224 11079 HAIL...0.88IN WIND...60MPH $$ GL
366
WWUS55 KTWC 222356
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
456 PM MST Thu Jul 22 2021
AZC019-230005-
/O.EXP.KTWC.SV.W.0089.000000T0000Z-210723T0000Z/
Pima-
456 PM MST Thu Jul 22 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PIMA COUNTY WILL
EXPIRE AT 500 PM MST...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with this thunderstorm and a Flash Flood Warning
is in effect until 745 PM MST.
LAT...LON 3210 11071 3208 11105 3229 11112 3235 11078
TIME...MOT...LOC 2355Z 155DEG 4KT 3224 11079
$$
GLThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 6:15 PM MST | Special Weather Statement | TWC | Santa Cruz | 45 min |
| Jul 21, 6:35 PM MST | Special Weather Statement | TWC | Pima | 55 min |
| Jul 21, 7:04 PM MST | Special Weather Statement | TWC | Pima | 41 min |
| Jul 21, 9:02 PM MST | Special Weather Statement | TWC | 43 min | |
| Jul 22, 1:04 PM MST | Special Weather Statement | TWC | Santa Cruz | 26 min |
| Jul 22, 1:37 PM MST | Severe Thunderstorm Warning | TWC | Pima | 38 min |
| Jul 22, 2:34 PM MST | Special Weather Statement | TWC | Santa Cruz | 26 min |
| Jul 22, 2:36 PM MST | Areal Flood Advisory | TWC | Graham, Pinal | 3 hr |
| Jul 22, 2:43 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 47 min |
| Jul 22, 2:51 PM MST | Severe Thunderstorm Warning | TWC | Pima | 39 min |
| Jul 22, 3:17 PM MST | Dust Storm Advisory | TWC | Pima, Pinal | 58 min |
| Jul 22, 3:27 PM MST | Severe Thunderstorm Warning | TWC | Pima | 27 min |
| Jul 22, 3:56 PM MST | Dust Storm Advisory | TWC | Pima, Pinal | 34 min |
| Jul 22, 4:11 PM MST | Areal Flood Advisory | TWC | Pima | 2 hr |
| Jul 22, 4:35 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
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.