Alert archive / Arizona / Special Weather Statements in 2021

Special Weather Statement, NWS Phoenix, AZ

June 30, 2021

NWS Phoenix, AZ issued this special weather statement at Jun 30, 2021, 5:13 PM MST. It was in force for 32 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: Jun 30, 2021, 5:13 PM MST (00:13 UTC)
Expired: Jun 30, 2021, 5:45 PM MST
In force: 32 min
Issued by: NWS Phoenix, AZ

The radar

The Yuma radar (KYUX), 133 km from the middle of the area, began a volume at 00:16 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

Yuma Prvg Ground, AZ (K1Y7), launched 00:00Z, 0.2 hours before the alert went out and 115 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1149 J/kg
Mixed-layer CIN: -92 J/kg
Mixed-layer LCL: 2552 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

082 
WWUS85 KPSR 010013
SPSPSR

Special Weather Statement
National Weather Service Phoenix AZ
513 PM MST Wed Jun 30 2021
 
AZZ531-533-536-539-010045-
Gila River Valley AZ-Kofa AZ-Gila Bend AZ-Central La Paz AZ-
513 PM MST Wed Jun 30 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LA PAZ...
NORTHEASTERN YUMA AND MARICOPA COUNTIES UNTIL 545 PM MST...

At 512 PM MST, Doppler radar was tracking a strong thunderstorm 15
miles west of Sundad, or 40 miles southwest of Tonopah, moving south
at 25 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Paloma and Hyder. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3338 11362 3341 11343 3295 11326 3288 11357
TIME...MOT...LOC 0012Z 344DEG 21KT 3318 11351 

$$

LJH

The office that day

Everything else NWS Phoenix, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 30, 5:22 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	53 min
Jun 30, 5:38 PM MST	Dust Storm Advisory	PSR	Maricopa, Yuma	67 min
Jun 30, 5:44 PM MST	Special Weather Statement	PSR		31 min
Jun 30, 5:48 PM MST	Special Weather Statement	PSR	Maricopa	27 min
Jun 30, 6:19 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	56 min
Jun 30, 6:31 PM MST	Dust Storm Warning	PSR	La Paz, Yuma	59 min
Jun 30, 6:47 PM MST	Special Weather Statement	PSR		43 min
Jul 1, 4:04 PM MST	Special Weather Statement	PSR		26 min

Nearby

Special Weather Statements in Arizona, 2021 Every 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.