Alert archive / Arizona / Flash Flood Warnings in 2026
Flash Flood Warning 174, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Sep 16, 2026, 2:26 PM MST for Yavapai County, Arizona. It was in force for 4 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
- Sep 16, 2026, 2:26 PM MST (21:26 UTC)
- Expired
- Sep 16, 2026, 6:16 PM MST
- In force
- 4 hr
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Yavapai County, AZ
The radar
The Flagstaff radar (KFSX), 124 km from the middle of the area, began a volume at 21:27 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, 9.4 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.
- Mixed-layer CAPE
- 1115 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1275 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 6:09 PM MST | Flash Flood Warning | FGZ | Apache | 3 hr |
| Sep 16, 11:23 AM MST | Flash Flood Warning | FGZ | Coconino | 3 hr |
| Sep 16, 12:18 PM MST | Flash Flood Warning | FGZ | Coconino | 6 hr |
| Sep 16, 12:44 PM MST | Flash Flood Warning | FGZ | Coconino | 4 hr |
| Sep 16, 12:59 PM MST | Flash Flood Warning | FGZ | Yavapai | 4 hr |
| Sep 16, 1:03 PM MST | Areal Flood Advisory | FGZ | Coconino, Navajo | 4 hr |
| Sep 16, 1:09 PM MST | Flash Flood Warning | FGZ | Coconino, Yavapai | 7 hr |
| Sep 16, 1:53 PM MST | Areal Flood Advisory | FGZ | Apache | 3 hr |
| Sep 16, 1:53 PM MST | Flash Flood Warning | FGZ | Apache | 3 hr |
| Sep 16, 2:43 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 32 min |
| Sep 16, 3:17 PM MST | Flash Flood Warning | FGZ | Coconino | 3 hr |
| Sep 16, 3:32 PM MST | Flash Flood Warning | FGZ | Yavapai | 4 hr |
Nearby
Flash Flood Warnings in Arizona, 2026Every 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.