Alert archive / Utah / Special Weather Statements in 2021
Special Weather Statement, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this special weather statement at Jul 21, 2021, 3:13 PM MDT for Sanpete County, Utah. It was in force for 32 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 21, 2021, 3:13 PM MDT (21:13 UTC)
- Expired
- Jul 21, 2021, 3:45 PM MDT
- In force
- 32 min
- Issued by
- NWS Salt Lake City, UT
County Sanpete County, UT
The radar
The Salt Lake City radar (KMTX), 195 km from the middle of the area, began a volume at 21:13 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, 9.2 hours before the alert went out and 141 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
- 14 J/kg
- Mixed-layer CIN
- -235 J/kg
- Mixed-layer LCL
- 2473 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
804 WWUS85 KSLC 212113 SPSSLC Special Weather Statement National Weather Service Salt Lake City UT 313 PM MDT Wed Jul 21 2021 UTZ115>117-212145- Western Millard and Juab Counties UT-Central Mountains UT- Eastern Juab/Millard Counties UT- 313 PM MDT Wed Jul 21 2021 ...GUSTY WINDS CREATED FROM THUNDERSTORMS ACROSS NORTHEASTERN MILLARD AND SOUTHEASTERN JUAB COUNTIES UNTIL 345 PM MDT... At 312 PM MDT, National Weather Service Doppler radar indicated a strong thunderstorm 19 miles north of Scipio...moving northeast at 20 mph. Wind gusts up to 50 mph will be possible. Locations impacted include... Nephi, Leamington, Lynndyl, Mills, Little Sahara State Park and Jericho. This includes the following highways... Interstate 15 between mile markers 196 and 225. US Route 6 between mile markers 98 and 126. PRECAUTIONARY/PREPAREDNESS ACTIONS... If threatening weather approaches, take shelter in a sturdy building. Strong winds with these showers may occur well ahead of any rain. Do not wait for rain or the sound of thunder before taking cover. SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from windows. && LAT...LON 3934 11207 3944 11249 3979 11228 3971 11179 TIME...MOT...LOC 2112Z 212DEG 17KT 3952 11217 $$ 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, 1:45 PM MDT | Special Weather Statement | SLC | Sevier | 30 min |
| Jul 21, 3:16 PM MDT | Special Weather Statement | SLC | Piute | 29 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.