Alert archive / Arizona / Special Weather Statements in 2021
Special Weather Statement, NWS Phoenix, AZ
NWS Phoenix, AZ issued this special weather statement at Aug 28, 2021, 6:21 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
- Aug 28, 2021, 6:21 PM MST (01:21 UTC)
- Expired
- Aug 28, 2021, 7:00 PM MST
- In force
- 39 min
- Issued by
- NWS Phoenix, AZ
- Hail
- 0.25 in
- Wind
- 50
The radar
The Phoenix radar (KIWA), 137 km from the middle of the area, began a volume at 01:23 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 00:00Z, 1.4 hours before the alert went out and 105 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
- 645 J/kg
- Mixed-layer CIN
- -152 J/kg
- Mixed-layer LCL
- 3094 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
431
WWUS85 KPSR 290121
SPSPSR
Special Weather Statement
National Weather Service Phoenix AZ
621 PM MST Sat Aug 28 2021
AZZ534-290200-
Aguila Valley AZ-
621 PM MST Sat Aug 28 2021
...A strong thunderstorm will impact portions of Maricopa County
through 700 PM MST...
At 621 PM MST, Doppler radar was tracking a strong thunderstorm 8
miles east of Aguila, or 15 miles west of Wickenburg, moving south at
20 mph.
HAZARD...Wind gusts up to 50 mph and pea 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...
Aguila.
This includes US Highway 60 between mile markers 80 and 104.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3375 11276 3383 11332 3400 11319 3400 11283
TIME...MOT...LOC 0121Z 013DEG 17KT 3396 11303
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
$$
18The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 6:48 PM MST | Dust Storm Warning | PSR | Pinal | 42 min |
| Aug 28, 7:14 PM MST | Dust Storm Advisory | PSR | Maricopa, Pinal | 31 min |
| Aug 29, 1:15 AM MST | Special Weather Statement | PSR | Yuma | 45 min |
| Aug 29, 5:35 AM MST | Special Weather Statement | PSR | 25 min | |
| Aug 29, 6:51 AM MST | Special Weather Statement | PSR | Yuma | 39 min |
| Aug 29, 7:27 AM MST | Special Weather Statement | PSR | Yuma | 48 min |
| Aug 29, 8:18 AM MST | Special Weather Statement | PSR | Yuma | 42 min |
| Aug 29, 8:22 AM MST | Areal Flood Advisory | PSR | Yuma | 3 hr |
| Aug 29, 4:31 PM MST | Special Weather Statement | PSR | 44 min | |
| Aug 29, 4:49 PM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Aug 29, 1:14 PM MST | Special Weather Statement | PSR | Riverside | 31 min |
| Aug 29, 3:30 PM MST | Special Weather Statement | PSR | Riverside | 30 min |
| Aug 29, 4:01 PM MST | Special Weather Statement | PSR | Riverside | 29 min |
| Aug 29, 4:29 PM MST | Flash Flood Warning | PSR | Riverside, San Bernardino | 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.