Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 47, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Jul 16, 2021, 4:48 PM MST for Coconino County, Gila County, Arizona. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 16, 2021, 4:48 PM MST (23:48 UTC)
- Expired
- Jul 16, 2021, 5:08 PM MST
- In force
- 20 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Coconino County, AZ, Gila County, AZ
The radar
The Flagstaff radar (KFSX), 31 km from the middle of the area, began a volume at 23:49 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, 11.8 hours before the alert went out and 103 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
- 487 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 1090 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 88 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
364
WUUS55 KFGZ 162348
SVRFGZ
AZC005-007-170030-
/O.NEW.KFGZ.SV.W.0047.210716T2348Z-210717T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Flagstaff AZ
448 PM MST Fri Jul 16 2021
The National Weather Service in Flagstaff has issued a
* Severe Thunderstorm Warning for...
Gila County in east central Arizona...
Coconino County in north central Arizona...
* Until 530 PM MST.
* At 447 PM MST, a severe thunderstorm was located near Pine, or 9
miles northwest of Payson, and is nearly stationary.
HAZARD...Ping pong ball size hail and 45 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles.
* This severe thunderstorm will remain over mainly rural areas of
Gila and Coconino Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3436 11148 3439 11144 3440 11140 3437 11136
3433 11137 3430 11140
TIME...MOT...LOC 2347Z 038DEG 3KT 3436 11141
HAIL...1.50IN
WIND...60MPH
$$
McCollum1 follow-up statement
575
WWUS55 KFGZ 170008
SVSFGZ
Severe Weather Statement
National Weather Service Flagstaff AZ
508 PM MST Fri Jul 16 2021
AZC005-007-170016-
/O.CAN.KFGZ.SV.W.0047.000000T0000Z-210717T0030Z/
Gila-Coconino-
508 PM MST Fri Jul 16 2021
...THE SEVERE THUNDERSTORM WARNING FOR GILA AND COCONINO COUNTIES IS
CANCELLED...
The storm which prompted the warning near Pine has weakened below
severe limits, and no longer poses an immediate threat to life or
property.
Therefore, the warning has been cancelled.
LAT...LON 3436 11148 3439 11144 3440 11140 3437 11136
3433 11137 3430 11140
TIME...MOT...LOC 0001Z 038DEG 3KT 3435 11142
$$
McCollumThe office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 5:20 PM MST | Areal Flood Advisory | FGZ | Yavapai | 115 min |
| Jul 15, 6:33 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 27 min |
| Jul 15, 6:55 PM MST | Areal Flood Advisory | FGZ | Yavapai | 3 hr |
| Jul 15, 8:21 PM MST | Flash Flood Warning | FGZ | Yavapai | 114 min |
| Jul 16, 11:56 AM MST | Flash Flood Warning | FGZ | Coconino | 3 hr |
| Jul 16, 12:03 PM MST | Areal Flood Advisory | FGZ | Yavapai | 2 hr |
| Jul 16, 12:36 PM MST | Areal Flood Advisory | FGZ | Coconino | 2 hr |
| Jul 16, 12:52 PM MST | Special Weather Statement | FGZ | 23 min | |
| Jul 16, 1:16 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 29 min |
| Jul 16, 1:20 PM MST | Flash Flood Warning | FGZ | Coconino | 115 min |
| Jul 16, 1:24 PM MST | Severe Thunderstorm Warning | FGZ | Gila, Navajo | 51 min |
| Jul 16, 1:44 PM MST | Special Weather Statement | FGZ | 46 min | |
| Jul 16, 2:13 PM MST | Severe Thunderstorm Warning | FGZ | Gila, Navajo | 32 min |
| Jul 16, 2:25 PM MST | Areal Flood Advisory | FGZ | Coconino | 3 hr |
| Jul 16, 2:59 PM MST | Flash Flood Warning | FGZ | Coconino | 61 min |
| Jul 16, 3:14 PM MST | Special Weather Statement | FGZ | 31 min | |
| Jul 16, 3:43 PM MST | Severe Thunderstorm Warning | FGZ | Coconino, Yavapai | 32 min |
| Jul 16, 4:18 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 12 min |
| Jul 16, 4:34 PM MST | Severe Thunderstorm Warning | FGZ | Gila | 41 min |
| Jul 16, 4:41 PM MST | Flash Flood Warning | FGZ | Gila | 3 hr |
| Jul 16, 4:59 PM MST | Severe Thunderstorm Warning | FGZ | Gila, Yavapai | 15 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 2021Every severe thunderstorm warning in 2021
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.