Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 106, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 5, 2021, 3:26 PM MST for Santa Cruz County, Arizona. It was in force for 34 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
- Aug 5, 2021, 3:26 PM MST (22:26 UTC)
- Expired
- Aug 5, 2021, 4:00 PM MST
- In force
- 34 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 59 km from the middle of the area, began a volume at 22:27 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, 10.4 hours before the alert went out and 86 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
- 1468 J/kg
- Mixed-layer CIN
- -213 J/kg
- Mixed-layer LCL
- 1735 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
171
WUUS55 KTWC 052226
SVRTWC
AZC023-052300-
/O.NEW.KTWC.SV.W.0106.210805T2226Z-210805T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
326 PM MST Thu Aug 5 2021
The National Weather Service in Tucson has issued a
* Severe Thunderstorm Warning for...
Southeastern Santa Cruz County in southeastern Arizona...
* Until 400 PM MST.
* At 326 PM MST, a severe thunderstorm was located near Nogales
International Airport, or near Nogales, moving west at 10 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...
Nogales, Nogales International Airport, Kino Springs and Lochiel.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3144 11100 3144 11061 3133 11062 3134 11099
TIME...MOT...LOC 2226Z 080DEG 9KT 3136 11086
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$2 follow-up statements
015
WWUS55 KTWC 052241
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
341 PM MST Thu Aug 5 2021
AZC023-052300-
/O.CON.KTWC.SV.W.0106.000000T0000Z-210805T2300Z/
Santa Cruz-
341 PM MST Thu Aug 5 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM MST
FOR SOUTHEASTERN SANTA CRUZ COUNTY...
At 340 PM MST, a severe thunderstorm was located near Nogales
International Airport, or near Nogales, moving west at 5 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Nogales, Nogales International Airport, Kino Springs and Lochiel.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3144 11100 3144 11061 3133 11062 3134 11099
TIME...MOT...LOC 2240Z 076DEG 6KT 3137 11085
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$543
WWUS55 KTWC 052254
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
354 PM MST Thu Aug 5 2021
AZC023-052304-
/O.EXP.KTWC.SV.W.0106.000000T0000Z-210805T2300Z/
Santa Cruz-
354 PM MST Thu Aug 5 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SANTA CRUZ COUNTY
WILL EXPIRE AT 400 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...small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.
LAT...LON 3144 11100 3144 11061 3133 11062 3134 11099
TIME...MOT...LOC 2254Z 063DEG 7KT 3135 11084
$$The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 3:05 PM MST | Special Weather Statement | TWC | Santa Cruz | 40 min |
| Aug 5, 3:36 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 114 min |
| Aug 5, 3:47 PM MST | Flash Flood Warning | TWC | Santa Cruz | 3 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.