Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 33, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Jul 12, 2021, 3:48 PM MST for Apache County, Gila County, Navajo County, Arizona. It was in force for 27 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 12, 2021, 3:48 PM MST (22:48 UTC)
- Expired
- Jul 12, 2021, 4:15 PM MST
- In force
- 27 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Apache County, AZ, Gila County, AZ, Navajo County, AZ
The radar
The Flagstaff radar (KFSX), 133 km from the middle of the area, began a volume at 22:49 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 12, 4:00 PM MST | HAIL 1.5 | 3 W Mcnary, AZ |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phoenix, AZ (KPSR), launched 12:00Z, 10.8 hours before the alert went out and 207 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
- 280 J/kg
- Mixed-layer CIN
- -525 J/kg
- Mixed-layer LCL
- 2475 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 133 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
607
WUUS55 KFGZ 122248
SVRFGZ
AZC001-007-017-122315-
/O.NEW.KFGZ.SV.W.0033.210712T2248Z-210712T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Flagstaff AZ
348 PM MST Mon Jul 12 2021
The National Weather Service in Flagstaff has issued a
* Severe Thunderstorm Warning for...
Gila County in east central Arizona...
Apache County in northeastern Arizona...
Navajo County in north central Arizona...
* Until 415 PM MST.
* At 347 PM MST, a severe thunderstorm was located over Hondah, or 14
miles southeast of Show Low, moving west at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Pinetop-lakeside, Lake Of The Woods--Pinetop-lakeside, Hondah,
North Fork, Fort Apache Reservation, Pinetop Country Club, Lakeside
Campground and Mcnary.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3414 10978 3400 10980 3400 11002 3416 11000
TIME...MOT...LOC 2247Z 095DEG 12KT 3408 10989
HAIL...1.00IN
WIND...60MPH
$$1 follow-up statement
235
WWUS55 KFGZ 122312
SVSFGZ
Severe Weather Statement
National Weather Service Flagstaff AZ
412 PM MST Mon Jul 12 2021
AZC001-007-017-122321-
/O.EXP.KFGZ.SV.W.0033.000000T0000Z-210712T2315Z/
Gila-Apache-Navajo-
412 PM MST Mon Jul 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR GILA...APACHE AND NAVAJO
COUNTIES WILL EXPIRE AT 415 PM MST...
The near Hondah which prompted the Severe Thunderstorm Warning has
weakened below severe limits and no longer poses an immediate threat
to life or property. Therefore, the warning will be allowed to
expire.
LAT...LON 3414 10978 3400 10980 3400 11002 3416 11000
TIME...MOT...LOC 2311Z 095DEG 12KT 3409 10997
$$The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 1:44 PM MST | Flash Flood Watch | FGZ | Coconino, Gila, Yavapai | 39 hr |
| Jul 12, 1:49 PM MST | Special Weather Statement | FGZ | 26 min | |
| Jul 12, 2:03 PM MST | Special Weather Statement | FGZ | Apache | 27 min |
| Jul 12, 2:29 PM MST | Special Weather Statement | FGZ | Apache | 31 min |
| Jul 12, 4:05 PM MST | Severe Thunderstorm Warning | FGZ | Coconino, Gila | 25 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.