Alert archive / Arizona / Tornado Warnings in 2021

Tornado Warning 3, NWS Flagstaff, AZ

October 5, 2021Apache County, Gila County, Navajo County, Arizona

NWS Flagstaff, AZ issued this tornado warning at Oct 5, 2021, 5:04 PM MST for Apache County, Gila County, Navajo County, Arizona. It was in force for 26 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: Oct 5, 2021, 5:04 PM MST (00:04 UTC)
Expired: Oct 5, 2021, 5:30 PM MST
In force: 26 min
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Apache County, AZ, Gila County, AZ, Navajo County, AZ

The radar

The Flagstaff radar (KFSX), 117 km from the middle of the area, began a volume at 00:06 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
Oct 5, 5:30 PM MST	HAIL 0.75	1 Ese Pinetop-Lakeside, AZ	PERSISTENT HAIL LED TO HAIL COVERING THE GROUND.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Oct 5, 11:46 AM MST	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 0.1 hours before the alert went out and 204 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 840 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

033 
WFUS55 KFGZ 060004
TORFGZ
AZC001-007-017-060030-
/O.NEW.KFGZ.TO.W.0003.211006T0004Z-211006T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Flagstaff AZ
504 PM MST Tue Oct 5 2021

The National Weather Service in Flagstaff has issued a

* Tornado Warning for...
  Gila County in east central Arizona...
  Apache County in northeastern Arizona...
  Navajo County in north central Arizona...

* Until 530 PM MST.
    
* At 503 PM MST, a severe thunderstorm capable of producing a tornado
  was located near North Fork, or 13 miles south of Show Low, moving
  northeast at 45 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Lake Of The Woods--Pinetop-lakeside around 510 PM MST.
  Pinetop-lakeside and Hondah around 515 PM MST.

Other locations impacted by this tornadic thunderstorm include
Lakeside Campground, White Mountain Apache Reservation, Pinetop
Country Club and Scott Reservoir Campground.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3391 11019 3400 11023 3424 11012 3418 11008
      3419 10980 3391 11009
TIME...MOT...LOC 0003Z 237DEG 39KT 3404 11003 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

NL

2 follow-up statements

549 
WWUS55 KFGZ 060016
SVSFGZ

Severe Weather Statement
National Weather Service Flagstaff AZ
516 PM MST Tue Oct 5 2021

AZC001-007-060024-
/O.CAN.KFGZ.TO.W.0003.000000T0000Z-211006T0030Z/
Gila-Apache-
516 PM MST Tue Oct 5 2021

...THE TORNADO WARNING FOR GILA AND APACHE COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area in these counties. Therefore, the warning has 
been cancelled.

A Severe Thunderstorm Watch remains in effect until 800 PM MST for
north central and east central Arizona.

LAT...LON 3424 11012 3418 11008 3419 10985 3414 10985
      3400 11000 3400 11023
TIME...MOT...LOC 0014Z 237DEG 39KT 3411 10990 

$$

AZC017-060030-
/O.CON.KFGZ.TO.W.0003.000000T0000Z-211006T0030Z/
Navajo-
516 PM MST Tue Oct 5 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM MST FOR NAVAJO
COUNTY...
    
At 514 PM MST, a severe thunderstorm capable of producing a tornado
was located over Hondah, or 12 miles southeast of Show Low, moving
northeast at 45 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
Navajo County, including the following locations... Lakeside
Campground, Pinetop Country Club, Scott Reservoir Campground and
White Mountain Apache Reservation.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3424 11012 3418 11008 3419 10985 3414 10985
      3400 11000 3400 11023
TIME...MOT...LOC 0014Z 237DEG 39KT 3411 10990 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

NL

729 
WWUS55 KFGZ 060030
SVSFGZ

Severe Weather Statement
National Weather Service Flagstaff AZ
530 PM MST Tue Oct 5 2021

AZC017-060038-
/O.EXP.KFGZ.TO.W.0003.000000T0000Z-211006T0030Z/
Navajo-
530 PM MST Tue Oct 5 2021

...THE TORNADO WARNING FOR NAVAJO COUNTY WILL EXPIRE AT 530 PM MST...
                
The low level rotation on the storm which prompted the warning near 
Pinetop-Lakeside has weakened, and no longer appears capable of 
producing a tornado. Therefore, the warning will be allowed to 
expire. Small hail and heavy rain are still likely occurring with 
this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 800 PM MST for
north central and east central Arizona.

LAT...LON 3424 11012 3418 11008 3419 10985 3414 10985
      3400 11000 3400 11023
TIME...MOT...LOC 0028Z 237DEG 39KT 3418 10977 

$$

NL

The office that day

Everything else NWS Flagstaff, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 5, 6:10 PM MST	Special Weather Statement	FGZ		35 min
Oct 5, 6:16 PM MST	Special Weather Statement	FGZ	Gila	29 min
Oct 5, 6:51 PM MST	Special Weather Statement	FGZ		24 min
Oct 5, 7:07 PM MST	Special Weather Statement	FGZ		23 min

Nearby

Tornado Warnings in Arizona, 2021 Every tornado warning in 2021 Tornadoes 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.