Alert archive / Arizona / Special Weather Statements in 2021

Special Weather Statement, NWS Tucson, AZ

August 7, 2021Cochise County, Arizona

NWS Tucson, AZ issued this special weather statement at Aug 7, 2021, 2:47 PM MST for Cochise County, Arizona. It was in force for 28 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 7, 2021, 2:47 PM MST (21:47 UTC)
Expired: Aug 7, 2021, 3:15 PM MST
In force: 28 min
Issued by: NWS Tucson, AZ
Hail: 0.88 in
Wind: 50

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 119 km from the middle of the area, began a volume at 21:48 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, 9.8 hours before the alert went out and 156 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: 174 J/kg
Mixed-layer CIN: -334 J/kg
Mixed-layer LCL: 2050 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 6 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

802 
WWUS85 KTWC 072147
SPSTWC

Special Weather Statement
National Weather Service Tucson AZ
247 PM MST Sat Aug 7 2021
 
AZZ508-072215-
Eastern Cochise County Below 5000 Feet including Douglas/Willcox-
247 PM MST Sat Aug 7 2021

...A strong thunderstorm will impact portions of south central
Cochise County through 315 PM MST...

At 247 PM MST, Doppler radar was tracking a strong thunderstorm near
Douglas. This storm was nearly stationary over Highway 80.

HAZARD...Wind gusts up to 50 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...
Douglas and Pirtleville. 

This includes the following highways...
 Route 80 between mile markers 363 and 378, and between mile markers
383 and 384.
 Route 191 between mile markers 1 and 4.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 3138 10962 3149 10950 3146 10936 3133 10941
      3133 10962
TIME...MOT...LOC 2147Z 009DEG 3KT 3143 10949 

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

$$

JRM

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 5:01 PM MST	Severe Thunderstorm Warning	TWC	Pima	44 min
Aug 6, 5:02 PM MST	Special Weather Statement	TWC	Pima	43 min
Aug 6, 5:14 PM MST	Special Weather Statement	TWC	Greenlee	46 min
Aug 6, 5:18 PM MST	Severe Thunderstorm Warning	TWC	Pima	42 min
Aug 6, 5:27 PM MST	Areal Flood Advisory	TWC	Pima	2 hr
Aug 6, 5:28 PM MST	Areal Flood Advisory	TWC	Pima	2 hr
Aug 6, 5:29 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	46 min
Aug 6, 5:40 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Aug 6, 5:50 PM MST	Special Weather Statement	TWC	Graham	25 min
Aug 6, 6:00 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Aug 6, 6:02 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	58 min
Aug 6, 6:19 PM MST	Tornado Warning	TWC	Pima	26 min
Aug 6, 6:23 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima, Pinal	4 hr
Aug 6, 7:02 PM MST	Special Weather Statement	TWC		43 min
Aug 6, 9:25 PM MST	Areal Flood Warning	TWC	Pima	3 hr
Aug 7, 12:54 PM MST	Severe Thunderstorm Warning	TWC	Cochise	51 min
Aug 7, 1:41 PM MST	Severe Thunderstorm Warning	TWC	Cochise	49 min
Aug 7, 2:55 PM MST	Severe Thunderstorm Warning	TWC	Cochise	34 min
Aug 7, 3:09 PM MST	Areal Flood Advisory	TWC	Cochise	111 min
Aug 7, 3:17 PM MST	Severe Thunderstorm Warning	TWC	Cochise	43 min
Aug 7, 3:25 PM MST	Special Weather Statement	TWC	Greenlee	50 min
Aug 7, 3:53 PM MST	Special Weather Statement	TWC		52 min
Aug 7, 4:51 PM MST	Special Weather Statement	TWC	Pima	39 min
Aug 7, 4:57 PM MST	Special Weather Statement	TWC	Cochise	48 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.