Alert archive / Utah / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 2, NWS Salt Lake City, UT

May 13, 2001Kane County, Washington County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at May 13, 2001, 1:43 PM MDT for Kane County, Washington County, Utah. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: May 13, 2001, 1:43 PM MDT (19:43 UTC)
Expired: May 13, 2001, 2:30 PM MDT
In force: 47 min
Issued by: NWS Salt Lake City, UT
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Kane County, UT, Washington County, UT

The radar

The Cedar City radar (KICX), 44 km from the middle of the area, began a volume at 19:45 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, 7.7 hours before the alert went out and 249 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: 11 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 1220 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 39 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS55 KSLC 131948
SVRSLC
UTC025-053-132030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
143 PM MDT SUN MAY 13 2001

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS EXTENDED THE 
SEVERE THUNDERSTORM WARNING TO INCLUDE THE FOLLOWING

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME WEST CENTRAL KANE COUNTY IN UTAH
  EAST CENTRAL WASHINGTON COUNTY IN UTAH

* UNTIL 230 PM MDT

* AT 134 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 11 MILES SOUTHWEST OF ZION NP...OR ABOUT 27
  MILES EAST OF ST GEORGE...MOVING NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  OVER SOUTH CENTRAL ZION NP AT 205 PM MDT

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE
THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN 
EXCESS OF 55 MPH...DEADLY LIGHTNING...AND HEAVY RAIN.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN SALT LAKE CITY.

LAT...LON 3715 11323 3705 11304 3734 11278 3746 11302

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 1:02 PM MDT	Severe Thunderstorm Warning	SLC	Washington	43 min
May 13, 4:46 PM MDT	Severe Thunderstorm Warning	SLC	Piute	29 min

Nearby

Severe Thunderstorm Warnings in Utah, 2001 Every severe thunderstorm warning in 2001

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.