Alert archive / Arizona / Tornado Warnings in 2011

Tornado Warning 8, NWS Flagstaff, AZ

September 14, 2011Coconino County, Arizona

NWS Flagstaff, AZ issued this tornado warning at Sep 14, 2011, 12:20 PM MST for Coconino County, Arizona. It was in force for 25 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: Sep 14, 2011, 12:20 PM MST (19:20 UTC)
Expired: Sep 14, 2011, 12:45 PM MST
In force: 25 min
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon

County Coconino County, AZ

The radar

The Flagstaff radar (KFSX), 121 km from the middle of the area, began a volume at 19:24 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, 7.3 hours before the alert went out and 74 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: 224 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 729 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 64 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

552 
WFUS55 KFGZ 141920
TORFGZ
AZC005-141945-
/O.NEW.KFGZ.TO.W.0008.110914T1920Z-110914T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1220 PM MST WED SEP 14 2011

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A

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

* UNTIL 1245 PM MST

* AT 1214 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER EAST
  CENTRAL COCONINO COUNTY...OR 5 MILES NORTHEAST OF WUPATKI NATIONAL
  MONUMENT...MOVING NORTHEAST AT 15 MPH.

* THE TORNADO WILL BE NEAR...
  RURAL EASTERN COCONINO COUNTY...EAST OF WUPATKI...THROUGH 1230
  PM MST

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING
PREVIOUSLY IN EFFECT FOR THIS STORM.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
QUARTER SIZED HAIL.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 3578 11116 3563 11101 3551 11123 3562 11137
TIME...MOT...LOC 1919Z 224DEG 11KT 3560 11123

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 13, 5:00 PM MST	Flash Flood Warning	FGZ	Coconino	60 min
Sep 13, 5:26 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Navajo	34 min
Sep 13, 8:16 PM MST	Special Weather Statement	FGZ		59 min
Sep 14, 11:57 AM MST	Severe Thunderstorm Warning	FGZ	Coconino	33 min
Sep 14, 12:12 PM MST	Severe Thunderstorm Warning	FGZ	Navajo	18 min
Sep 14, 12:13 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	32 min
Sep 14, 12:48 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	27 min
Sep 14, 12:53 PM MST	Special Weather Statement	FGZ		22 min
Sep 14, 1:10 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Yavapai	21 min
Sep 14, 1:12 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	21 min
Sep 14, 1:22 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	23 min
Sep 14, 1:45 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Navajo	18 min
Sep 14, 1:55 PM MST	Flash Flood Warning	FGZ	Coconino	2 hr
Sep 14, 2:06 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	24 min
Sep 14, 2:06 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	24 min
Sep 14, 2:21 PM MST	Areal Flood Advisory	FGZ	Coconino	2 hr
Sep 14, 2:57 PM MST	Areal Flood Advisory	FGZ	Yavapai	105 min
Sep 14, 4:22 PM MST	Flash Flood Warning	FGZ	Coconino, Yavapai	113 min
Sep 14, 4:37 PM MST	Flash Flood Warning	FGZ	Yavapai	113 min

Nearby

Tornado Warnings in Arizona, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.