Alert archive / Arizona / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 73, NWS Flagstaff, AZ

August 6, 2026Yavapai County, Arizona

NWS Flagstaff, AZ issued this severe thunderstorm warning at Aug 6, 2026, 4:29 PM MST for Yavapai County, Arizona. It was in force for 31 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 6, 2026, 4:29 PM MST (23:29 UTC)
Expired
Aug 6, 2026, 5:00 PM MST
In force
31 min
Issued by
NWS Flagstaff, AZ
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Yavapai County, AZ

The radar

The Flagstaff radar (KFSX), 124 km from the middle of the area, began a volume at 23:31 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

Phoenix, AZ (KPSR), launched 12:00Z, 11.5 hours before the alert went out and 141 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, Phoenix, AZ at 12:00Z on 2026-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 890 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phoenix, AZ at 12:00Z on 2026-08-06The 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
890 J/kg
Mixed-layer CIN
-229 J/kg
Mixed-layer LCL
1513 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 5:30 PM MSTSevere Thunderstorm WarningFGZYavapai30 min
Aug 5, 5:33 PM MSTSevere Thunderstorm WarningFGZGila27 min
Aug 6, 12:40 PM MSTSevere Thunderstorm WarningFGZCoconino35 min
Aug 6, 2:07 PM MSTSevere Thunderstorm WarningFGZCoconino23 min
Aug 6, 2:48 PM MSTSevere Thunderstorm WarningFGZCoconino, Gila28 min
Aug 6, 2:53 PM MSTSevere Thunderstorm WarningFGZCoconino24 min
Aug 6, 3:30 PM MSTFlash Flood Warning Considerable damage threatFGZGila3 hr
Aug 6, 3:31 PM MSTSevere Thunderstorm WarningFGZCoconino, Yavapai29 min
Aug 6, 3:59 PM MSTSevere Thunderstorm WarningFGZCoconino, Yavapai22 min
Aug 6, 4:04 PM MSTFlash Flood Warning Considerable damage threatFGZCoconino, Yavapai3 hr

Nearby

Severe Thunderstorm Warnings in Arizona, 2026Every severe thunderstorm warning in 2026

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.