Alert archive / Arizona / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 41, NWS Flagstaff, AZ

July 14, 2024Coconino County, Gila County, Yavapai County, Arizona

NWS Flagstaff, AZ issued this severe thunderstorm warning at Jul 14, 2024, 4:10 PM MST for Coconino County, Gila County, Yavapai County, Arizona. It was in force for 50 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: Jul 14, 2024, 4:10 PM MST (23:10 UTC)
Expired: Jul 14, 2024, 5:00 PM MST
In force: 50 min
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Coconino County, AZ, Gila County, AZ, Yavapai County, AZ

The radar

The Flagstaff radar (KFSX), 51 km from the middle of the area, began a volume at 23:09 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, 11.2 hours before the alert went out and 296 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: 1488 J/kg
Mixed-layer CIN: -149 J/kg
Mixed-layer LCL: 1484 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: 151 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.9

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 Jul 14, 1:00 PM MST, 3 hours 10 minutes earlier.

Area forecast discussion, Jul 14, 1:00 PM MST, 3 hours 10 minutes before

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In the hours before

Special weather statement, Jul 14, 1:54 PM MST, 2 hours 16 minutes before

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Special weather statement, Jul 14, 2:16 PM MST, 1 hour 54 minutes before

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Special weather statement, Jul 14, 2:23 PM MST, 1 hour 47 minutes before

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Special weather statement, Jul 14, 2:29 PM MST, 1 hour 41 minutes before

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Special weather statement, Jul 14, 3:23 PM MST, 47 minutes before

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Local storm report, Jul 14, 3:30 PM MST, 40 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
Jul 14, 12:44 PM MST	Special Weather Statement	FGZ		31 min
Jul 14, 1:13 PM MST	Areal Flood Advisory	FGZ	Yavapai	3 hr
Jul 14, 1:21 PM MST	Special Weather Statement	FGZ		24 min
Jul 14, 1:46 PM MST	Special Weather Statement	FGZ	Yavapai	29 min
Jul 14, 1:54 PM MST	Special Weather Statement	FGZ		51 min
Jul 14, 2:16 PM MST	Special Weather Statement	FGZ		44 min
Jul 14, 2:23 PM MST	Special Weather Statement	FGZ		52 min
Jul 14, 2:29 PM MST	Special Weather Statement	FGZ	Yavapai	46 min
Jul 14, 2:39 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Gila	21 min
Jul 14, 2:53 PM MST	Severe Thunderstorm Warning	FGZ	Apache, Gila, Navajo	22 min
Jul 14, 3:01 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Gila	44 min
Jul 14, 3:15 PM MST	Severe Thunderstorm Warning	FGZ	Gila, Navajo	45 min
Jul 14, 3:23 PM MST	Special Weather Statement	FGZ	Gila	37 min
Jul 14, 3:39 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Gila	36 min
Jul 14, 4:19 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Yavapai	41 min
Jul 14, 4:26 PM MST	Special Weather Statement	FGZ		34 min
Jul 14, 4:47 PM MST	Special Weather Statement	FGZ	Gila	28 min
Jul 14, 4:56 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Yavapai	15 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2024 Every severe thunderstorm warning in 2024

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.