Alert archive / Utah / Tornado Warnings in 2010

Tornado Warning 2, NWS Salt Lake City, UT

October 6, 2010Kane County, San Juan County, Utah

NWS Salt Lake City, UT issued this tornado warning at Oct 6, 2010, 11:25 AM MDT for Kane County, San Juan County, Utah. It was in force for 20 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: Oct 6, 2010, 11:25 AM MDT (17:25 UTC)
Expired: Oct 6, 2010, 11:45 AM MDT
In force: 20 min
Issued by: NWS Salt Lake City, UT
Area: Storm-based polygon

Counties Kane County, UT, San Juan County, UT

The radar

The Cedar City radar (KICX), 188 km from the middle of the area, began a volume at 17:26 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 watch it was issued in

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

Issued	Product	Office	Lasted
Oct 6, 10:29 AM MDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 5.4 hours before the alert went out and 245 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: 376 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 638 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 286 m²/s²
0-3 km storm-relative helicity: 320 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.8

Open this sounding in Storm Lab

The text

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

375 
WFUS55 KSLC 061725
TORSLC
UTC025-037-061745-
/O.NEW.KSLC.TO.W.0002.101006T1725Z-101006T1745Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1125 AM MDT WED OCT 6 2010

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN KANE COUNTY IN UTAH...
  SOUTHWESTERN SAN JUAN COUNTY IN SOUTHEAST UTAH...

* UNTIL 1145 AM MDT

* AT 1117 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THNUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS
  LOCATED 45 MILES SOUTHWEST OF BULLFROG...OR ABOUT 64 MILES WEST    
  OF MEXICAN HAT...MOVING NORTH AT 35 MPH. THIS WARNING INCLUDES THE
  GLEN CANYON LAKE POWELL RECREATION AREA.

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

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM MDT WEDNESDAY EVENING
FOR CENTRAL UTAH.

&&

LAT...LON 3751 11138 3752 11053 3744 11053 3744 11061
      3739 11062 3739 11069 3730 11069 3731 11065
      3727 11064 3725 11059 3716 11063 3715 11068
      3709 11065 3706 11070 3707 11080 3700 11091
      3699 11126
TIME...MOT...LOC 1724Z 183DEG 30KT 3696 11104

$$

CONGER

2 follow-up statements

875 
WWUS55 KSLC 061736
SVSSLC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1136 AM MDT WED OCT 6 2010

UTC025-037-061745-
/O.CON.KSLC.TO.W.0002.000000T0000Z-101006T1745Z/
SAN JUAN UT-KANE UT-
1136 AM MDT WED OCT 6 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 AM MDT FOR EASTERN
KANE AND SOUTHWESTERN SAN JUAN COUNTIES...

AT 1126 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 40 MILES SOUTHWEST OF
BULLFROG...OR ABOUT 63 MILES SOUTHEAST OF ESCALANTE...MOVING NORTH AT
35 MPH. THIS WARNING INCLUDES THE GLEN CANYON LAKE POWELL RECREATION 
AREA.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM MDT WEDNESDAY EVENING
FOR CENTRAL UTAH.

&&

LAT...LON 3751 11138 3752 11053 3744 11053 3744 11061
      3739 11062 3739 11069 3730 11069 3731 11065
      3727 11064 3725 11059 3716 11063 3715 11068
      3709 11065 3706 11070 3707 11080 3700 11091
      3699 11126
TIME...MOT...LOC 1735Z 183DEG 30KT 3705 11103

$$

CONGER

663 
WWUS55 KSLC 061751
SVSSLC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1151 AM MDT WED OCT 6 2010

UTC025-037-061800-
/O.EXP.KSLC.TO.W.0002.000000T0000Z-101006T1745Z/
SAN JUAN UT-KANE UT-
1151 AM MDT WED OCT 6 2010

...THE TORNADO WARNING FOR EASTERN KANE AND SOUTHWESTERN SAN JUAN
COUNTIES HAS EXPIRED...

THE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO HAS WEAKENED. THIS 
STORM DOES REMAIN STRONG...AND MAY BECOME TORNADIC AGAIN SHORTLY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM MDT WEDNESDAY EVENING
FOR CENTRAL UTAH.

LAT...LON 3751 11138 3752 11053 3744 11053 3744 11061
      3739 11062 3739 11069 3730 11069 3731 11065
      3727 11064 3725 11059 3716 11063 3715 11068
      3709 11065 3706 11070 3707 11080 3700 11091
      3699 11126
TIME...MOT...LOC 1736Z 183DEG 30KT 3706 11103

$$

CONGER

The office that day

Everything else NWS Salt Lake City, UT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 6, 9:18 AM MDT	Severe Thunderstorm Warning	SLC	Kane, San Juan	42 min
Oct 6, 9:54 AM MDT	Areal Flood Warning	SLC	Emery, Garfield, Iron, Kane, San Juan, Sanpete and 3 more	23 hr
Oct 6, 11:12 AM MDT	Severe Thunderstorm Warning	SLC	Kane, San Juan	48 min
Oct 6, 12:02 PM MDT	Severe Thunderstorm Warning	SLC	Garfield, Kane, San Juan	43 min
Oct 6, 12:15 PM MDT	Special Weather Statement	SLC	Wayne	45 min
Oct 6, 12:45 PM MDT	Severe Thunderstorm Warning	SLC	Garfield, San Juan, Wayne	60 min
Oct 6, 1:39 PM MDT	Special Weather Statement	SLC	Emery	36 min
Oct 6, 1:47 PM MDT	Severe Thunderstorm Warning	SLC	Emery, Wayne	43 min
Oct 6, 1:50 PM MDT	Severe Thunderstorm Warning	SLC	Emery	40 min
Oct 6, 2:29 PM MDT	Severe Thunderstorm Warning	SLC	Emery, Wayne	46 min
Oct 6, 2:29 PM MDT	Severe Thunderstorm Warning	SLC	Emery	61 min
Oct 6, 3:07 PM MDT	Special Weather Statement	SLC	Carbon	38 min
Oct 6, 3:15 PM MDT	Severe Thunderstorm Warning	SLC	Carbon, Duchesne	27 min
Oct 6, 3:56 PM MDT	Special Weather Statement	SLC	Box Elder, Davis, Salt Lake, Tooele	94 min
Oct 6, 4:21 PM MDT	Special Weather Statement	SLC	Iron	24 min

Nearby

Tornado Warnings in Utah, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.