Alert archive / Arizona / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 46, NWS Flagstaff, AZ

August 16, 2022Apache County, Arizona

NWS Flagstaff, AZ issued this severe thunderstorm warning at Aug 16, 2022, 11:54 AM MST for Apache County, Arizona. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 16, 2022, 11:54 AM MST (18:54 UTC)
Expired: Aug 16, 2022, 12:45 PM MST
In force: 51 min
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Apache County, AZ

The radar

The Flagstaff radar (KFSX), 181 km from the middle of the area, began a volume at 18:55 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

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 6.9 hours before the alert went out and 210 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: 42 J/kg
Mixed-layer CIN: -92 J/kg
Mixed-layer LCL: 2816 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 21 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

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Flagstaff, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 16, 11:06 AM MST, 48 minutes earlier.

Area forecast discussion, Aug 16, 11:06 AM MST, 48 minutes before

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In the hours before

Local storm report, Aug 16, 8:11 AM MST, 3 hours 43 minutes before

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Local storm report, Aug 16, 11:00 AM MST, 54 minutes before

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Special weather statement, Aug 16, 11:25 AM MST, 29 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 15, 5:57 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Apache, Navajo	3 hr
Aug 15, 6:57 PM MST	Special Weather Statement	FGZ	Yavapai	48 min
Aug 15, 6:59 PM MST	Special Weather Statement	FGZ		46 min
Aug 15, 11:13 PM MST	Areal Flood Advisory	FGZ	Coconino, Yavapai	62 min
Aug 16, 11:25 AM MST	Special Weather Statement	FGZ		35 min
Aug 16, 12:30 PM MST	Special Weather Statement	FGZ		45 min
Aug 16, 12:32 PM MST	Areal Flood Advisory	FGZ	Apache	3 hr
Aug 16, 12:56 PM MST	Areal Flood Advisory	FGZ	Coconino	3 hr
Aug 16, 1:06 PM MST	Special Weather Statement	FGZ		24 min
Aug 16, 1:37 PM MST	Special Weather Statement	FGZ		23 min
Aug 16, 2:07 PM MST	Special Weather Statement	FGZ		38 min
Aug 16, 2:22 PM MST	Special Weather Statement	FGZ		23 min
Aug 16, 2:49 PM MST	Areal Flood Advisory	FGZ	Apache, Navajo	3 hr
Aug 16, 2:55 PM MST	Special Weather Statement	FGZ		35 min
Aug 16, 3:22 PM MST	Severe Thunderstorm Warning	FGZ	Navajo	23 min
Aug 16, 3:23 PM MST	Severe Thunderstorm Warning	FGZ	Navajo	22 min
Aug 16, 3:55 PM MST	Severe Thunderstorm Warning	FGZ	Apache	50 min
Aug 16, 4:15 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Apache	3 hr

Nearby

Severe Thunderstorm Warnings in Arizona, 2022 Every severe thunderstorm warning in 2022

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.