Alert archive / Arizona / Tornado Warnings in 2011
Tornado Warning 1, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this tornado warning at Sep 6, 2011, 2:09 PM MDT for Navajo County, Arizona. It was in force for 36 min. 2 reports 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
- Sep 6, 2011, 2:09 PM MDT (20:09 UTC)
- Expired
- Sep 6, 2011, 2:45 PM MDT
- In force
- 36 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
County Navajo County, AZ
The radar
The Flagstaff radar (KFSX), 86 km from the middle of the area, began a volume at 20:09 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 |
|---|---|---|---|
| Sep 6, 2:30 PM MDT | TSTM WND DMG | 12 W Snowflake, AZ | FOREST SERVICE REPORTED WIND DAMAGED JUNIPER TREES WITH NEEDLES MISSING ALONG A THREE QUARTER OF A MILE STRETCH ALONG SR 277 1 MILE WEST OF FR 332. |
| Sep 6, 2:30 PM MDT | HAIL 1 | 14 Ene Heber-Overgaard, AZ | ONE INCH OR LARGER HAIL....CRACKS TO WINDSHIELD DUE TO HAIL REPORTED ON SR277 AND FS 332 |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 8.2 hours before the alert went out and 164 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
- 296 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 750 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
661 WFUS55 KFGZ 062009 TORFGZ AZC017-062045- /O.NEW.KFGZ.TO.W.0001.110906T2009Z-110906T2045Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 109 PM MST TUE SEP 6 2011 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A * TORNADO WARNING FOR... SOUTH CENTRAL NAVAJO COUNTY IN NORTHEAST ARIZONA... * UNTIL 145 PM MST * AT 105 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR ARIPINE... OR 24 MILES NORTHWEST OF SHOW LOW...MOVING EAST AT 20 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CLAY SPRINGS...PINEDALE...AND LINDEN. 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 2 INCH DIAMETER HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. 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 3456 11012 3427 11016 3437 11048 3452 11046 TIME...MOT...LOC 2008Z 275DEG 18KT 3444 11036 $$ DJO
2 follow-up statements
565 WWUS55 KFGZ 062029 SVSFGZ SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 129 PM MST TUE SEP 6 2011 AZC017-062045- /O.CON.KFGZ.TO.W.0001.000000T0000Z-110906T2045Z/ NAVAJO AZ- 129 PM MST TUE SEP 6 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 145 PM MST FOR SOUTH CENTRAL NAVAJO COUNTY... AT 125 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM LIKELY PRODUCING A TORNADO. THIS TORNADO WAS LOCATED NEAR CLAY SPRINGS...OR 5 MILES NORTHWEST OF LINDE...MOVING EAST AT 20 MPH. IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING GOLFBALL SIZE HAIL OR LARGER AND DESTRUCTIVE STRAIGHT LINE WINDS. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PINEDALE AND LINDEN. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. && LAT...LON 3456 11012 3427 11016 3437 11048 3452 11046 TIME...MOT...LOC 2025Z 275DEG 18KT 3443 11026 $$ DJO
257 WWUS55 KFGZ 062049 SVSFGZ SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 149 PM MST TUE SEP 6 2011 AZC017-062058- /O.EXP.KFGZ.TO.W.0001.000000T0000Z-110906T2045Z/ NAVAJO AZ- 149 PM MST TUE SEP 6 2011 ...THE TORNADO WARNING FOR SOUTH CENTRAL NAVAJO COUNTY HAS EXPIRED... THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED SOMEWHAT...THEREFORE THE TORNDO WARNING HAS BEEN ALLOWED TO EXPIRE. A SEVERE THUNDERSTORM WARNING FOR LARGE HAIL FROM THIS STORM REMAINS IN EFFECT. LAT...LON 3456 11012 3427 11016 3437 11048 3452 11046 TIME...MOT...LOC 2029Z 275DEG 18KT 3443 11024 $$ DJO
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 7:39 PM MDT | Areal Flood Advisory | FGZ | Yavapai | 2 hr |
| Sep 6, 10:32 AM MDT | Areal Flood Advisory | FGZ | Coconino | 3 hr |
| Sep 6, 12:53 PM MDT | Areal Flood Advisory | FGZ | Apache | 3 hr |
| Sep 6, 1:31 PM MDT | Severe Thunderstorm Warning | FGZ | Navajo | 44 min |
| Sep 6, 2:45 PM MDT | Severe Thunderstorm Warning | FGZ | Navajo | 45 min |
| Sep 6, 3:35 PM MDT | Special Weather Statement | FGZ | 40 min | |
| Sep 6, 3:43 PM MDT | Flash Flood Warning | FGZ | Apache | 62 min |
| Sep 6, 4:06 PM MDT | Areal Flood Advisory | FGZ | Apache | 114 min |
| Sep 6, 4:38 PM MDT | Flash Flood Warning | FGZ | Yavapai | 112 min |
Nearby
Tornado Warnings in Arizona, 2011Every tornado warning in 2011Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.