Alert archive / Arizona / Special Weather Statements in 2021
Special Weather Statement, NWS Tucson, AZ
NWS Tucson, AZ issued this special weather statement at Aug 6, 2021, 12:52 PM MST for Santa Cruz County, Arizona. It was in force for 38 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 6, 2021, 12:52 PM MST (19:52 UTC)
- Expired
- Aug 6, 2021, 1:30 PM MST
- In force
- 38 min
- Issued by
- NWS Tucson, AZ
- Hail
- 0.75 in
- Wind
- 40
County Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 49 km from the middle of the area, began a volume at 19:54 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, 7.9 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
- 1100 J/kg
- Mixed-layer CIN
- -195 J/kg
- Mixed-layer LCL
- 1879 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- -10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
410
WWUS85 KTWC 061952
SPSTWC
Special Weather Statement
National Weather Service Tucson AZ
1252 PM MST Fri Aug 6 2021
AZZ503-507-513-062030-
Upper San Pedro River Valley including Sierra
Vista/Benson-Dragoon/Mule/Huachuca and Santa Rita Mountains including
Bisbee/Canelo Hills/Madera Canyon-Upper Santa Cruz River and Altar
Valleys including Nogales-
1252 PM MST Fri Aug 6 2021
...A strong thunderstorm will impact portions of southwestern Cochise
and southeastern Santa Cruz Counties through 130 PM MST...
At 1252 PM MST, Doppler radar was tracking a strong thunderstorm over
Parker Canyon Lake, or 15 miles southwest of Sierra Vista. This storm
was nearly stationary.
HAZARD...Winds in excess of 40 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Fort Huachuca, Parker Canyon Lake, Canelo and Lochiel.
This includes Route 83 between mile markers 3 and 15.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3155 11069 3154 11030 3133 11034 3134 11069
TIME...MOT...LOC 1952Z 179DEG 4KT 3141 11046
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH
$$
KGThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 5:21 PM MST | Special Weather Statement | TWC | Pima | 39 min |
| Aug 6, 1:16 PM MST | Areal Flood Advisory | TWC | Cochise, Santa Cruz | 3 hr |
| Aug 6, 1:26 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 34 min |
| Aug 6, 1:58 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 47 min |
| Aug 6, 2:05 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 115 min |
| Aug 6, 2:29 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 31 min |
| Aug 6, 2:36 PM MST | Special Weather Statement | TWC | Pima | 24 min |
| Aug 6, 2:43 PM MST | Areal Flood Advisory | TWC | Graham | 2 hr |
| Aug 6, 2:46 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Graham | 44 min |
| Aug 6, 2:51 PM MST | Special Weather Statement | TWC | Santa Cruz | 24 min |
| Aug 6, 2:57 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 33 min |
| Aug 6, 3:00 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 2 hr |
| Aug 6, 3:10 PM MST | Flash Flood Warning | TWC | Santa Cruz | 3 hr |
| Aug 6, 3:16 PM MST | Areal Flood Advisory | TWC | Pima | 119 min |
| Aug 6, 3:26 PM MST | Areal Flood Advisory | TWC | Pima | 2 hr |
| Aug 6, 3:31 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 29 min |
| Aug 6, 3:40 PM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
| Aug 6, 3:46 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 29 min |
| Aug 6, 3:57 PM MST | Flash Flood Warning | TWC | Pima, Santa Cruz | 4 hr |
| Aug 6, 3:59 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 46 min |
| Aug 6, 4:12 PM MST | Areal Flood Advisory | TWC | Pima | 2 hr |
| Aug 6, 4:19 PM MST | Areal Flood Advisory | TWC | Cochise | 116 min |
| Aug 6, 4:55 PM MST | Areal Flood Advisory | TWC | Pima | 2 hr |
| Aug 6, 4:58 PM MST | Special Weather Statement | TWC | Pima | 32 min |
Nearby
Special Weather Statements in Arizona, 2021Every special weather statement 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.