Alert archive / Arizona / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 59, NWS Flagstaff, AZ

October 13, 2025Coconino County, Yavapai County, Arizona

NWS Flagstaff, AZ issued this severe thunderstorm warning at Oct 13, 2025, 3:42 PM MST for Coconino County, Yavapai County, Arizona. It was in force for 33 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: Oct 13, 2025, 3:42 PM MST (22:42 UTC)
Expired: Oct 13, 2025, 4:15 PM MST
In force: 33 min
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Coconino County, AZ, Yavapai County, AZ

The radar

The Flagstaff radar (KFSX), 113 km from the middle of the area, began a volume at 22:43 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, 10.7 hours before the alert went out and 33 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: 56 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 660 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 225 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 Oct 13, 1:53 PM MST, 1 hour 49 minutes earlier.

Area forecast discussion, Oct 13, 1:53 PM MST, 1 hour 49 minutes before

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In the hours before

Special weather statement, Oct 13, 12:15 PM MST, 3 hours 27 minutes before

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Special weather statement, Oct 13, 1:01 PM MST, 2 hours 41 minutes before

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Special weather statement, Oct 13, 2:42 PM MST, 1 hour before

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Special weather statement, Oct 13, 2:49 PM MST, 53 minutes before

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<body>
  <main class="wrap">
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      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 12, 7:08 PM MST	Tornado Warning	FGZ	Coconino	37 min
Oct 13, 1:28 AM MST	Wind Advisory	FGZ	Apache, Coconino, Navajo, Yavapai	42 hr
Oct 13, 6:31 AM MST	Special Weather Statement	FGZ		29 min
Oct 13, 12:15 PM MST	Special Weather Statement	FGZ		30 min
Oct 13, 1:01 PM MST	Special Weather Statement	FGZ		29 min
Oct 13, 2:42 PM MST	Special Weather Statement	FGZ		33 min
Oct 13, 2:49 PM MST	Special Weather Statement	FGZ		26 min
Oct 13, 3:20 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	25 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2025 Every severe thunderstorm warning in 2025

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.