Alert archive / Utah / Special Weather Statements in 2021

Special Weather Statement, NWS Salt Lake City, UT

May 17, 2021Kane County, Utah

NWS Salt Lake City, UT issued this special weather statement at May 17, 2021, 1:08 PM MDT for Kane County, Utah. It was in force for 52 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
May 17, 2021, 1:08 PM MDT (19:08 UTC)
Expired
May 17, 2021, 2:00 PM MDT
In force
52 min
Issued by
NWS Salt Lake City, UT

County Kane County, UT

The radar

The Cedar City radar (KICX), 60 km from the middle of the area, began a volume at 19:10 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, 7.1 hours before the alert went out and 265 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-pSkew-T log-p diagram, Flgstf/Belemont, AZ at 12:00Z on 2021-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 12:00Z on 2021-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
3543 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-35 m²/s²
0-3 km storm-relative helicity
-61 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

237 
WWUS85 KSLC 171908
SPSSLC

Special Weather Statement
National Weather Service Salt Lake City UT
108 PM MDT Mon May 17 2021
 
UTZ127-128-172000-
South Central Utah UT-Bryce Canyon Country UT-
108 PM MDT Mon May 17 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN GARFIELD AND
NORTHWESTERN KANE COUNTIES UNTIL 200 PM MDT...

At 108 PM MDT, National Weather Service Doppler radar indicated a
strong thunderstorm over Bryce Canyon National Park, or 29 miles west
of Escalante...moving southwest at 5 mph.

Pea size hail and winds in excess of 40 mph will be possible.

Locations impacted include...
Bryce Canyon National Park, Tropic, Cannonville and Rubys Inn. 

This includes Utah Route 12 between mile markers 14 and 24.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If threatening weather approaches, take shelter in a sturdy building.

&&

LAT...LON 3754 11227 3757 11224 3757 11223 3770 11215
      3770 11208 3767 11204 3753 11207 3753 11224
TIME...MOT...LOC 1908Z 028DEG 6KT 3766 11212 

$$

CRK

The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 7:30 PM MDTSpecial Weather StatementSLCSalt Lake60 min
May 17, 12:12 PM MDTFire Weather WatchSLCBeaver, Garfield, Iron, Kane, San Juan, Washington and 1 more27 hr
May 17, 12:12 PM MDTRed Flag WarningSLCBeaver, Carbon, Emery, Garfield, Iron, Juab and 9 more6 days
May 17, 1:46 PM MDTSpecial Weather StatementSLCSalt Lake44 min
May 17, 1:54 PM MDTSpecial Weather StatementSLCWasatch51 min
May 17, 2:27 PM MDTAreal Flood AdvisorySLCWashington93 min
May 17, 4:43 PM MDTSpecial Weather StatementSLCWeber32 min

Nearby

Special Weather Statements in Utah, 2021Every special weather statement in 2021

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.