Alert archive / Arizona / Special Weather Statements in 2021

Special Weather Statement, NWS Flagstaff, AZ

July 26, 2021

NWS Flagstaff, AZ issued this special weather statement at Jul 26, 2021, 3:21 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
Jul 26, 2021, 3:21 PM MST (22:21 UTC)
Expired
Jul 26, 2021, 4:00 PM MST
In force
39 min
Issued by
NWS Flagstaff, AZ

The radar

The Albuquerque radar (KABX), 223 km from the middle of the area, began a volume at 22:21 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

Albuquerq/Krtlnd, NM (KABQ), launched 12:00Z, 10.4 hours before the alert went out and 247 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-pSkew-T log-p diagram, Albuquerq/Krtlnd, NM at 12:00Z on 2021-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 169 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albuquerq/Krtlnd, NM at 12:00Z on 2021-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
169 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
1436 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
-15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

638 
WWUS85 KFGZ 262221
SPSFGZ

Special Weather Statement
National Weather Service Flagstaff AZ
421 PM MDT Mon Jul 26 2021
 
AZZ011-262300-
Chuska Mountains and Defiance Plateau-
421 PM MDT Mon Jul 26 2021

...SIGNIFICANT WEATHER ADVISORY FOR APACHE COUNTY UNTIL 500 PM MDT...

At 420 PM MDT, Doppler radar was tracking a strong thunderstorm near
Navajo, or 30 miles northwest of Gallup. This storm was nearly
stationary.

Pea size hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Red Lake Chapter House and Sawmill. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is also occurring with this storm, and may lead to 
localized flooding. Do not drive your vehicle through flooded 
roadways.

&&

LAT...LON 3579 10918 3599 10918 3600 10905 3579 10905
TIME...MOT...LOC 2220Z 012DEG 2KT 3586 10907 

$$

MAS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 7:05 PM MSTFlash Flood Warning Considerable damage threatFGZApache, Navajo3 hr
Jul 26, 12:38 PM MSTSpecial Weather StatementFGZ37 min
Jul 26, 4:29 PM MSTFlash Flood Warning Considerable damage threatFGZApache3 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.