Alert archive / Arizona / Tornado Warnings in 2016

Tornado Warning 1, NWS Flagstaff, AZ

June 20, 2016Navajo County, Arizona

NWS Flagstaff, AZ issued this tornado warning at Jun 20, 2016, 5:48 PM MDT for Navajo County, Arizona. It was in force for 12 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: Jun 20, 2016, 5:48 PM MDT (23:48 UTC)
Expired: Jun 20, 2016, 6:00 PM MDT
In force: 12 min
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon

County Navajo County, AZ

The radar

The Flagstaff radar (KFSX), 103 km from the middle of the area, began a volume at 23:51 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 177 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: 3435 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 80 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

493 
WFUS55 KFGZ 202348
TORFGZ
AZC017-210000-
/O.NEW.KFGZ.TO.W.0001.160620T2348Z-160621T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
448 PM MST MON JUN 20 2016

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL NAVAJO COUNTY IN NORTH CENTRAL ARIZONA...

* UNTIL 500 PM MST
    
* AT 447 PM MST...THE PUBLIC REPORTED A TORNADO 2 MILES SOUTHEAST OF
  SNOWFLAKE...OR 18 MILES NORTH OF SHOW LOW. DOPPLER RADAR SHOWED
  THIS TORNADO MOVING NORTHWEST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  TAYLOR...SHUMWAY AND SNOWFLAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO HAS BEEN SIGHTED. MOVE TO A BASEMENT OR AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF YOU ARE IN A MOBILE HOME OR OUTDOORS...MOVE TO THE CLOSEST
SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3450 10996 3440 11004 3442 11030 3468 11015
TIME...MOT...LOC 2347Z 112DEG 29KT 3451 11007 

$$

RR

1 follow-up statement

053 
WWUS55 KFGZ 210000
SVSFGZ

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
500 PM MST MON JUN 20 2016

AZC017-210009-
/O.EXP.KFGZ.TO.W.0001.000000T0000Z-160621T0000Z/
NAVAJO AZ-
500 PM MST MON JUN 20 2016

...THE TORNADO WARNING FOR EAST CENTRAL NAVAJO COUNTY WILL EXPIRE AT
500 PM MST...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS
WEAKENED. THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 3450 10996 3440 11004 3442 11030 3468 11015
TIME...MOT...LOC 2357Z 112DEG 29KT 3451 11007 

$$

RR

Nearby

Tornado Warnings in Arizona, 2016 Every tornado warning in 2016 Tornadoes in 2016

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.