Alert archive / Arizona / Special Weather Statements in 2021
Special Weather Statement, NWS Tucson, AZ
NWS Tucson, AZ issued this special weather statement at Aug 8, 2021, 3:46 PM MST. It was in force for 44 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 8, 2021, 3:46 PM MST (22:46 UTC)
- Expired
- Aug 8, 2021, 4:30 PM MST
- In force
- 44 min
- Issued by
- NWS Tucson, AZ
- Hail
- 0.50 in
- Wind
- 50
The radar
The Phoenix radar (KIWA), 140 km from the middle of the area, began a volume at 22:49 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
Phoenix, AZ (KPSR), launched 12:00Z, 10.8 hours before the alert went out and 134 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
- 413 J/kg
- Mixed-layer CIN
- -224 J/kg
- Mixed-layer LCL
- 2138 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -35 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
670
WWUS85 KTWC 082246
SPSTWC
Special Weather Statement
National Weather Service Tucson AZ
346 PM MST Sun Aug 8 2021
AZZ501-502-082330-
Western Pima County Including Ajo/Organ Pipe Cactus National
Monument-Tohono O'odham Nation including Sells-
346 PM MST Sun Aug 8 2021
...Strong thunderstorms will impact portions of northwestern Pima
County through 430 PM MST...
At 345 PM MST, Doppler radar was tracking a strong thunderstorm near
Ajo and another near Why. These storms were nearly stationary.
HAZARD...Wind gusts up to 50 mph and half inch 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...
Ajo and Why.
This includes the following highways...
Route 85 between mile markers 35 and 54.
Route 86 between mile markers 53 and 54.
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 3251 11272 3251 11269 3250 11268 3225 11265
3223 11286 3245 11299
TIME...MOT...LOC 2245Z 165DEG 0KT 3239 11281
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
$$
JRMThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 5:46 PM MST | Special Weather Statement | TWC | 44 min | |
| Aug 7, 5:54 PM MST | Special Weather Statement | TWC | Greenlee | 36 min |
| Aug 7, 6:19 PM MST | Areal Flood Advisory | TWC | Pima | 116 min |
| Aug 8, 2:48 PM MST | Severe Thunderstorm Warning | TWC | Pima | 42 min |
| Aug 8, 2:54 PM MST | Special Weather Statement | TWC | Greenlee | 36 min |
| Aug 8, 3:08 PM MST | Flash Flood Warning | TWC | Pima | 3 hr |
| Aug 8, 3:42 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 33 min |
| Aug 8, 4:11 PM MST | Special Weather Statement | TWC | Pima | 49 min |
| Aug 8, 4:12 PM MST | Special Weather Statement | TWC | Santa Cruz | 33 min |
| Aug 8, 4:19 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 86 min |
| Aug 8, 4:21 PM MST | Flash Flood Warning | TWC | Cochise | 114 min |
| Aug 8, 4:21 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 84 min |
| Aug 8, 4:26 PM MST | Areal Flood Advisory | TWC | Pima | 2 hr |
| Aug 8, 4:33 PM MST | Special Weather Statement | TWC | Cochise | 27 min |
| Aug 8, 4:48 PM MST | Flash Flood Warning | TWC | Santa Cruz | 3 hr |
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.