Alert archive / Arizona / Flash Flood Warnings in 2026

Flash Flood Warning 52, NWS Flagstaff, AZ

July 21, 2026Coconino County, Gila County, Arizona

NWS Flagstaff, AZ issued this flash flood warning at Jul 21, 2026, 1:33 PM MST for Coconino County, Gila County, Arizona. It was in force for 3 hr. 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 21, 2026, 1:33 PM MST (20:33 UTC)
Expired: Jul 21, 2026, 4:30 PM MST
In force: 3 hr
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

Counties Coconino County, AZ, Gila County, AZ

The radar

The Flagstaff radar (KFSX), 29 km from the middle of the area, began a volume at 20:34 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, 8.6 hours before the alert went out and 167 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: 92 J/kg
Mixed-layer CIN: -212 J/kg
Mixed-layer LCL: 1523 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 88 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 flash flood 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 flash flood warning went out at Jul 21, 10:48 AM MST, 2 hours 45 minutes earlier.

Area forecast discussion, Jul 21, 10:48 AM MST, 2 hours 45 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 20, 5:37 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Gila, Navajo	38 min
Jul 20, 6:36 PM MST	Severe Thunderstorm Warning	FGZ	Gila	24 min
Jul 20, 6:39 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila	3 hr
Jul 20, 7:00 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila	3 hr
Jul 20, 7:25 PM MST	Severe Thunderstorm Warning	FGZ	Apache	35 min
Jul 20, 7:57 PM MST	Severe Thunderstorm Warning	FGZ	Apache, Navajo	33 min
Jul 20, 8:05 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila	3 hr
Jul 21, 12:15 AM MST	Severe Thunderstorm Warning	FGZ	Coconino	30 min
Jul 21, 12:55 AM MST	Special Weather Statement	FGZ		35 min
Jul 21, 1:06 PM MST	Severe Thunderstorm Warning	FGZ	Apache	24 min
Jul 21, 1:56 PM MST	Severe Thunderstorm Warning	FGZ	Apache	34 min
Jul 21, 3:30 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Navajo	3 hr
Jul 21, 4:55 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr

Nearby

Flash Flood Warnings in Arizona, 2026 Every flash flood 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.