Alert archive / Arizona / Special Weather Statements in 2017

Special Weather Statement, NWS Tucson, AZ

August 3, 2017Pinal County, Arizona

NWS Tucson, AZ issued this special weather statement at Aug 3, 2017, 6:21 PM MST for Pinal County, Arizona. It was in force for 54 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 3, 2017, 6:21 PM MST (01:21 UTC)
Expired: Aug 3, 2017, 7:15 PM MST
In force: 54 min
Issued by: NWS Tucson, AZ

County Pinal County, AZ

The radar

The Phoenix radar (KIWA), 56 km from the middle of the area, began a volume at 01:21 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 (KDMA), launched 00:00Z, 1.4 hours before the alert went out and 88 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: 236 J/kg
Mixed-layer CIN: -157 J/kg
Mixed-layer LCL: 2037 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -33 m²/s²
0-3 km storm-relative helicity: -19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

257 
WWUS85 KTWC 040121
SPSTWC

Special Weather Statement
National Weather Service Tucson AZ
621 PM MST THU AUG 3 2017
 
AZZ502-504>506-040215-
Tohono O'odham Nation including Sells-Southeast Pinal County
including Kearny/Mammoth/Oracle-Tucson Metro Area including
Tucson/Green Valley/Marana/Vail-South Central Pinal County including
Eloy/Picacho Peak State Park-
621 PM MST THU AUG 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL PINAL COUNTY UNTIL 715 PM
MST...

At 621 PM MST, Doppler radar was tracking strong thunderstorms along
a line extending from Florence Junction to 17 miles southwest of
Arizona City. Movement was east at 15 mph.

Wind gusts of 50 mph and blowing dust will be possible with these
storms.

Locations impacted include...
Eloy, Kearny, Red Rock, Friendly Corners, Picacho, Kelvin, Oracle
Junction and Picacho Peak.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms 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.

Areas of blowing dust may briefly reduce visibilities to near or
below 1 mile. If you encounter localized dense blowing dust, do not
drive into it if at all possible.

&&

LAT...LON 3325 11094 3312 11086 3251 11093 3251 11191
      3277 11174 3273 11174 3273 11167 3276 11161
      3285 11152
TIME...MOT...LOC 0121Z 264DEG 12KT 3325 11136 3255 11184 

$$

LEINS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 5:13 PM MST	Special Weather Statement	TWC	Pima	47 min
Aug 3, 5:46 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	119 min
Aug 3, 5:55 PM MST	Areal Flood Advisory	TWC	Pima	2 hr
Aug 3, 6:00 PM MST	Special Weather Statement	TWC		30 min
Aug 3, 6:19 PM MST	Flash Flood Warning	TWC	Pima, Pinal	3 hr
Aug 3, 7:29 PM MST	Areal Flood Advisory	TWC	Pima	2 hr
Aug 4, 12:58 PM MST	Special Weather Statement	TWC	Graham	32 min
Aug 4, 1:35 PM MST	Special Weather Statement	TWC	Graham	25 min
Aug 4, 1:47 PM MST	Special Weather Statement	TWC	Cochise	28 min
Aug 4, 1:58 PM MST	Special Weather Statement	TWC	Graham	32 min
Aug 4, 2:12 PM MST	Areal Flood Advisory	TWC	Graham	3 hr
Aug 4, 4:18 PM MST	Flash Flood Warning	TWC	Cochise	3 hr

Nearby

Special Weather Statements in Arizona, 2017 Every special weather statement in 2017

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.