Alert archive / Arizona / Special Weather Statements in 2021

Special Weather Statement, NWS Flagstaff, AZ

July 9, 2021Yavapai County, Arizona

NWS Flagstaff, AZ issued this special weather statement at Jul 9, 2021, 5:21 PM MST for Yavapai County, Arizona. It was in force for 39 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 9, 2021, 5:21 PM MST (00:21 UTC)
Expired: Jul 9, 2021, 6:00 PM MST
In force: 39 min
Issued by: NWS Flagstaff, AZ

County Yavapai County, AZ

The radar

The Flagstaff radar (KFSX), 180 km from the middle of the area, began a volume at 00:21 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.

What was reported inside it

Time	Report	Where	Remark
Jul 9, 5:55 PM MST	TSTM WND DMG	Bagdad, AZ	VIDEO AND REPORTS OF WIND DAMAGE TO TREES AND STRUCTURES VIA SOCIAL MEDIA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 0.4 hours before the alert went out and 148 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: 49 J/kg
Mixed-layer CIN: -141 J/kg
Mixed-layer LCL: 3400 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 85 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

578 
WWUS85 KFGZ 100021
SPSFGZ

Special Weather Statement
National Weather Service Flagstaff AZ
521 PM MST Fri Jul 9 2021
 
AZZ008-037-100100-
Yavapai County Valleys and Basins-Yavapai County  Mountains-
521 PM MST Fri Jul 9 2021

...SIGNIFICANT WEATHER ADVISORY FOR YAVAPAI COUNTY IN THE 
BAGDAD AREA UNTIL 600 PM MST...

At 520 PM MST, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles northeast of Bagdad to near Yava.
Movement was southwest at 20 mph.

Pea size hail and wind gusts up to 50 mph will be possible with these
storms.

Locations impacted include...
Bagdad and Yava. 

LAT...LON 3452 11333 3474 11310 3457 11277 3422 11308
      3441 11334
TIME...MOT...LOC 0020Z 037DEG 19KT 3465 11311 3450 11293 

$$
JJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 5:00 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	45 min
Jul 9, 5:11 PM MST	Special Weather Statement	FGZ		34 min
Jul 9, 5:32 PM MST	Severe Thunderstorm Warning	FGZ	Navajo	43 min
Jul 9, 5:40 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	35 min
Jul 9, 6:14 PM MST	Severe Thunderstorm Warning	FGZ	Navajo	46 min
Jul 9, 7:14 PM MST	Special Weather Statement	FGZ	Gila	46 min
Jul 10, 12:36 PM MST	Special Weather Statement	FGZ	Apache	24 min
Jul 10, 1:29 PM MST	Areal Flood Advisory	FGZ	Apache	2 hr
Jul 10, 1:38 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Yavapai	31 min
Jul 10, 1:57 PM MST	Special Weather Statement	FGZ		33 min
Jul 10, 2:21 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	39 min
Jul 10, 2:40 PM MST	Areal Flood Advisory	FGZ	Gila	4 hr
Jul 10, 2:55 PM MST	Special Weather Statement	FGZ	Yavapai	50 min
Jul 10, 3:40 PM MST	Areal Flood Advisory	FGZ	Yavapai	3 hr
Jul 10, 4:18 PM MST	Severe Thunderstorm Warning	FGZ	Gila	27 min
Jul 10, 4:27 PM MST	Severe Thunderstorm Warning	FGZ	Apache, Navajo	48 min
Jul 10, 4:40 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila	3 hr
Jul 10, 4:40 PM MST	Severe Thunderstorm Warning	FGZ	Gila, Navajo	50 min
Jul 10, 4:51 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Yavapai	24 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.