Alert archive / Arizona / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 41, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Aug 2, 2023, 2:41 PM MST for Coconino County, Arizona. It was in force for 34 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 2, 2023, 2:41 PM MST (21:41 UTC)
- Expired
- Aug 2, 2023, 3:15 PM MST
- In force
- 34 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Coconino County, AZ
The radar
The Flagstaff radar (KFSX), 150 km from the middle of the area, began a volume at 21:42 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, 9.7 hours before the alert went out and 68 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
- 353 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 1413 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 8:25 AM MST | Flood Watch | FGZ | Coconino | 9 hr |
| Aug 2, 12:36 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 24 min |
| Aug 2, 1:09 PM MST | Special Weather Statement | FGZ | 36 min | |
| Aug 2, 1:32 PM MST | Special Weather Statement | FGZ | Coconino | 28 min |
| Aug 2, 1:38 PM MST | Special Weather Statement | FGZ | Coconino | 22 min |
| Aug 2, 2:09 PM MST | Special Weather Statement | FGZ | 21 min | |
| Aug 2, 2:22 PM MST | Special Weather Statement | FGZ | Coconino | 23 min |
| Aug 2, 3:42 PM MST | Special Weather Statement | FGZ | Navajo | 33 min |
| Aug 2, 4:47 PM MST | Areal Flood Advisory | FGZ | Navajo | 3 hr |
| Aug 2, 4:52 PM MST | Areal Flood Advisory | FGZ | Apache | 3 hr |
Nearby
Severe Thunderstorm Warnings in Arizona, 2023Every severe thunderstorm warning in 2023
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.