Alert archive / Arizona / Special Weather Statements in 2021

Special Weather Statement, NWS Tucson, AZ

August 23, 2021Cochise County, Arizona

NWS Tucson, AZ issued this special weather statement at Aug 23, 2021, 1:12 PM MST for Cochise County, Arizona. It was in force for 48 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 23, 2021, 1:12 PM MST (20:12 UTC)
Expired: Aug 23, 2021, 2:00 PM MST
In force: 48 min
Issued by: NWS Tucson, AZ
Hail: 0.25 in
Wind: 40

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 133 km from the middle of the area, began a volume at 20:15 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, 8.2 hours before the alert went out and 164 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2559 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 50 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

984 
WWUS85 KTWC 232012
SPSTWC

Special Weather Statement
National Weather Service Tucson AZ
112 PM MST Mon Aug 23 2021
 
AZZ508-512-232100-
Chiricahua Mountains including Chiricahua National Monument-Eastern
Cochise County Below 5000 Feet including Douglas/Willcox-
112 PM MST Mon Aug 23 2021

...A strong thunderstorm will impact portions of east central Cochise
County through 200 PM MST...

At 112 PM MST, Doppler radar was tracking a strong thunderstorm 16
miles southwest of Portal, or 18 miles southwest of Rodeo, moving
northeast at 10 mph.

HAZARD...Winds in excess of 40 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...
Portal, Chiricahua National Monument, Rucker Canyon and Paradise. 

This includes the following highways...
 Route 80 between mile markers 399 and 415.
 Route 181 between mile markers 59 and 64.
 Route 186 between mile markers 358 and 359.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 3159 10916 3172 10949 3203 10945 3190 10905
      3173 10905
TIME...MOT...LOC 2012Z 213DEG 9KT 3171 10929 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

$$

AH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 22, 6:24 PM MST	Special Weather Statement	TWC	Cochise	36 min
Aug 23, 12:11 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Aug 23, 12:42 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	3 hr
Aug 23, 1:26 PM MST	Special Weather Statement	TWC	Cochise	49 min
Aug 23, 1:28 PM MST	Areal Flood Advisory	TWC	Cochise	2 hr
Aug 23, 1:42 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Aug 23, 1:50 PM MST	Severe Thunderstorm Warning	TWC	Cochise	40 min
Aug 23, 1:54 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Aug 23, 2:09 PM MST	Excessive Heat Watch	TWC	Pima, Pinal	24 hr
Aug 23, 2:13 PM MST	Special Weather Statement	TWC	Cochise	47 min
Aug 23, 2:22 PM MST	Flash Flood Warning Considerable damage threat	TWC	Cochise	3 hr
Aug 23, 2:37 PM MST	Special Weather Statement	TWC	Cochise	38 min
Aug 23, 2:43 PM MST	Severe Thunderstorm Warning	TWC	Cochise	24 min
Aug 23, 3:00 PM MST	Special Weather Statement	TWC	Cochise	45 min
Aug 23, 3:32 PM MST	Areal Flood Advisory	TWC	Cochise	118 min
Aug 23, 4:03 PM MST	Special Weather Statement	TWC	Graham	42 min
Aug 23, 4:37 PM MST	Severe Thunderstorm Warning	TWC	Graham, Greenlee	38 min
Aug 23, 4:59 PM MST	Flash Flood Warning Considerable damage threat	TWC	Graham	3 hr

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.