Alert archive / Utah / Special Weather Statements in 2021

Special Weather Statement, NWS Salt Lake City, UT

July 22, 2021Beaver County, Utah

NWS Salt Lake City, UT issued this special weather statement at Jul 22, 2021, 2:00 PM MDT for Beaver County, Utah. It was in force for 30 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: Jul 22, 2021, 2:00 PM MDT (20:00 UTC)
Expired: Jul 22, 2021, 2:30 PM MDT
In force: 30 min
Issued by: NWS Salt Lake City, UT

County Beaver County, UT

The radar

The Cedar City radar (KICX), 90 km from the middle of the area, began a volume at 20:01 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

Salt Lake City I, UT (KSLC), launched 12:00Z, 8.0 hours before the alert went out and 284 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: 56 J/kg
Mixed-layer CIN: -151 J/kg
Mixed-layer LCL: 2355 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

079 
WWUS85 KSLC 222000
SPSSLC

Special Weather Statement
National Weather Service Salt Lake City UT
200 PM MDT Thu Jul 22 2021
 
UTZ122-125-222030-
Southwest Utah UT-Southern Mountains UT-
200 PM MDT Thu Jul 22 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BEAVER COUNTY UNTIL 230
PM MDT...

At 200 PM MDT, National Weather Service Doppler radar indicated a
strong thunderstorm near Milford...moving east at 10 mph.

Penny to nickel size hail and wind gusts up to 50 mph will be
possible.

Locations impacted include...
Milford.

This includes Utah Route 21 between mile markers 67 and 83.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Heavy rainfall is also occurring with this storm, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio and
available television stations for additional information and possible
warnings from the National Weather Service.

&&

LAT...LON 3829 11313 3846 11320 3857 11294 3832 11283
TIME...MOT...LOC 2000Z 251DEG 7KT 3840 11308 

$$

ND

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 8:41 PM MDT	Flash Flood Warning Considerable damage threat	SLC	Kane	6 hr
Jul 22, 2:43 AM MDT	Flash Flood Watch	SLC	Emery, Garfield, Kane, Sevier, Washington, Wayne	20 hr
Jul 22, 11:16 AM MDT	Special Weather Statement	SLC	Piute	29 min
Jul 22, 11:41 AM MDT	Special Weather Statement	SLC		49 min
Jul 22, 11:54 AM MDT	Flood Watch	SLC	Beaver, Garfield, Iron, Kane, Piute, Washington and 1 more	11 hr
Jul 22, 1:02 PM MDT	Special Weather Statement	SLC	Iron	43 min
Jul 22, 1:13 PM MDT	Special Weather Statement	SLC	Garfield	32 min
Jul 22, 1:18 PM MDT	Areal Flood Advisory	SLC	Iron	117 min
Jul 22, 1:20 PM MDT	Severe Thunderstorm Warning	SLC	Garfield	25 min
Jul 22, 1:45 PM MDT	Special Weather Statement	SLC	Kane	45 min
Jul 22, 2:13 PM MDT	Flash Flood Warning Considerable damage threat	SLC	Garfield, Kane	3 hr
Jul 22, 2:13 PM MDT	Severe Thunderstorm Warning	SLC	Beaver	32 min
Jul 22, 2:34 PM MDT	Flash Flood Warning Considerable damage threat	SLC	Kane, Washington	3 hr
Jul 22, 2:42 PM MDT	Areal Flood Advisory	SLC	Beaver	2 hr
Jul 22, 2:58 PM MDT	Severe Thunderstorm Warning	SLC	Washington	32 min
Jul 22, 3:08 PM MDT	Flash Flood Warning Considerable damage threat	SLC	Garfield, Wayne	3 hr
Jul 22, 3:14 PM MDT	Flash Flood Warning Considerable damage threat	SLC	Garfield, Kane	5 hr
Jul 22, 3:14 PM MDT	Special Weather Statement	SLC	Washington	46 min
Jul 22, 3:30 PM MDT	Severe Thunderstorm Warning	SLC	Garfield
Jul 22, 3:46 PM MDT	Flash Flood Warning Considerable damage threat	SLC	Garfield, Kane	7 hr
Jul 22, 4:02 PM MDT	Severe Thunderstorm Warning	SLC	Iron	28 min
Jul 22, 4:15 PM MDT	Special Weather Statement	SLC	Box Elder	30 min
Jul 22, 4:28 PM MDT	Severe Thunderstorm Warning	SLC	Iron	32 min
Jul 22, 4:48 PM MDT	Special Weather Statement	SLC	Washington	27 min
Jul 22, 5:51 PM MDT	Special Weather Statement	SLC		39 min
Jul 22, 5:58 PM MDT	Flash Flood Warning Considerable damage threat	SLC	Utah	3 hr

Nearby

Special Weather Statements in Utah, 2021 Every 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.