Alert archive / Arizona / Special Weather Statements in 2021
Special Weather Statement, NWS Tucson, AZ
NWS Tucson, AZ issued this special weather statement at Sep 26, 2021, 1:21 PM MST. It was in force for 39 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
- Sep 26, 2021, 1:21 PM MST (20:21 UTC)
- Expired
- Sep 26, 2021, 2:00 PM MST
- In force
- 39 min
- Issued by
- NWS Tucson, AZ
- Hail
- 0.88 in
- Wind
- 40
The radar
The Tucson radar (KEMX), 99 km from the middle of the area, began a volume at 20:24 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, 8.4 hours before the alert went out and 94 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
- 252 J/kg
- Mixed-layer CIN
- -123 J/kg
- Mixed-layer LCL
- 1157 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
576
WWUS85 KTWC 262021
SPSTWC
Special Weather Statement
National Weather Service Tucson AZ
121 PM MST Sun Sep 26 2021
AZZ502-503-515-262100-
Tohono O'odham Nation including Sells-Upper Santa Cruz River and
Altar Valleys including Nogales-Baboquivari Mountains including Kitt
Peak-
121 PM MST Sun Sep 26 2021
...A strong thunderstorm will impact portions of south central Pima
County through 200 PM MST...
At 121 PM MST, Doppler radar was tracking a strong thunderstorm 10
miles southeast of San Miguel, or 31 miles southeast of Sells, moving
east at 15 mph.
HAZARD...Winds in excess of 40 mph and nickel 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...
Newfield, Sasabe and Hashan Chuchg.
This includes Route 286 between mile markers 1 and 11.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3157 11183 3171 11157 3157 11142 3144 11140
TIME...MOT...LOC 2021Z 263DEG 12KT 3151 11165
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH
$$
KRGThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 25, 5:03 PM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
| Sep 25, 6:27 PM MST | Areal Flood Advisory | TWC | Cochise, Graham, Pima, Pinal | 3 hr |
| Sep 25, 6:46 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 3 hr |
| Sep 25, 7:17 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Sep 26, 11:51 AM MST | Special Weather Statement | TWC | Cochise | 39 min |
| Sep 26, 11:57 AM MST | Severe Thunderstorm Warning | TWC | Cochise | 28 min |
| Sep 26, 12:20 PM MST | Special Weather Statement | TWC | 40 min | |
| Sep 26, 12:44 PM MST | Special Weather Statement | TWC | Santa Cruz | 46 min |
| Sep 26, 12:58 PM MST | Special Weather Statement | TWC | Cochise | 47 min |
| Sep 26, 1:40 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 50 min |
| Sep 26, 2:18 PM MST | Special Weather Statement | TWC | Santa Cruz | 42 min |
| Sep 26, 2:33 PM MST | Areal Flood Advisory | TWC | Pima, Santa Cruz | 104 min |
| Sep 26, 2:56 PM MST | Severe Thunderstorm Warning | TWC | Pima | 49 min |
| Sep 26, 3:43 PM MST | Special Weather Statement | TWC | Santa Cruz | 47 min |
| Sep 26, 4:24 PM MST | Special Weather Statement | TWC | Pima | 51 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.