Alert archive / Arizona / Tornado Warnings in 2012

Tornado Warning 4, NWS Flagstaff, AZ

July 16, 2012Coconino County, Arizona

NWS Flagstaff, AZ issued this tornado warning at Jul 16, 2012, 4:14 PM MST for Coconino County, Arizona. It was in force for 31 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, 2012, 4:14 PM MST (23:14 UTC)
Expired: Jul 16, 2012, 4:45 PM MST
In force: 31 min
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon

County Coconino County, AZ

The radar

The Flagstaff radar (KFSX), 145 km from the middle of the area, began a volume at 23:14 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, 11.2 hours before the alert went out and 80 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: 84 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 956 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 128 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

833 
WFUS55 KFGZ 162314
TORFGZ
AZC005-162345-
/O.NEW.KFGZ.TO.W.0004.120716T2314Z-120716T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
414 PM MST MON JUL 16 2012

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL COCONINO COUNTY IN NORTH CENTRAL ARIZONA...

* UNTIL 445 PM MST...545 MST

* AT 409 PM MST...509 MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR 
  INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR 
  CAMERON...OR 20 MILES SOUTH OF TUBA CITY...MOVING EAST AT 25 MPH.

* THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
  INDICATED COUNTY.

THIS STORM MAY ALSO PRODUCE LARGE HAIL UP TO AN INCH AND ONE HALF IN
DIAMETER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.


&&

LAT...LON 3597 11129 3578 11124 3577 11158 3586 11160
TIME...MOT...LOC 2314Z 253DEG 21KT 3585 11130

$$

DB

2 follow-up statements

979 
WFUS55 KFGZ 162321 CCA
TORFGZ
AZC005-162345-
/O.COR.KFGZ.TO.W.0004.120716T2314Z-120716T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING...CORRECTED
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
414 PM MST MON JUL 16 2012

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL COCONINO COUNTY IN NORTH CENTRAL ARIZONA...

* UNTIL 445 PM MST...545 MDT

* AT 409 PM MST...509 MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR 
  INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR 
  CAMERON...OR 20 MILES SOUTH OF TUBA CITY...MOVING EAST AT 25 MPH.

* THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
  INDICATED COUNTY.

THIS STORM MAY ALSO PRODUCE LARGE HAIL UP TO AN INCH AND ONE HALF IN
DIAMETER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.


&&

LAT...LON 3597 11129 3578 11124 3577 11158 3586 11160
TIME...MOT...LOC 2314Z 253DEG 21KT 3585 11130

$$

DB

121 
WWUS55 KFGZ 162340
SVSFGZ

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
440 PM MST MON JUL 16 2012

AZC005-162349-
/O.EXP.KFGZ.TO.W.0004.000000T0000Z-120716T2345Z/
COCONINO AZ-
440 PM MST MON JUL 16 2012

...THE TORNADO WARNING FOR CENTRAL COCONINO COUNTY WILL EXPIRE AT 445
PM MST OR 545 MDT...

THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING NEAR CAMERON
HAS WEAKENED...THEREFORE THE TORNDO WARNING HAS BEEN ALLOWED TO EXPIRE.

THIS STORM MAY STILL PRODUCE HEAVY RAINFALL AND SMALL HAIL.

LAT...LON 3597 11129 3578 11124 3577 11158 3586 11160
TIME...MOT...LOC 2339Z 253DEG 21KT 3589 11113

$$

DB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 5:01 PM MST	Areal Flood Advisory	FGZ	Coconino, Navajo	119 min
Jul 15, 5:35 PM MST	Areal Flood Advisory	FGZ	Gila, Navajo	3 hr
Jul 15, 5:43 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	20 min
Jul 15, 5:58 PM MST	Flash Flood Warning	FGZ	Navajo	51 min
Jul 15, 6:07 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Yavapai	23 min
Jul 15, 6:29 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Yavapai	16 min
Jul 15, 9:46 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Gila	14 min
Jul 15, 10:29 PM MST	Areal Flood Advisory	FGZ	Coconino	90 min
Jul 15, 11:29 PM MST	Areal Flood Advisory	FGZ	Coconino, Gila, Yavapai	2 hr
Jul 16, 12:30 AM MST	Areal Flood Advisory	FGZ	Yavapai	87 min
Jul 16, 12:51 AM MST	Areal Flood Advisory	FGZ	Coconino, Yavapai	54 min
Jul 16, 11:52 AM MST	Severe Thunderstorm Warning	FGZ	Coconino	23 min
Jul 16, 1:31 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	29 min
Jul 16, 1:39 PM MST	Tornado Warning	FGZ	Coconino	36 min
Jul 16, 2:15 PM MST	Tornado Warning	FGZ	Coconino	16 min
Jul 16, 3:40 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	35 min
Jul 16, 3:49 PM MST	Tornado Warning	FGZ	Coconino	26 min

Nearby

Tornado Warnings in Arizona, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.