Alert archive / Utah / Flash Flood Warnings in 2001

Flash Flood Warning 13, NWS Salt Lake City, UT

July 8, 2001Piute County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Jul 8, 2001, 10:33 PM MDT for Piute County, Utah. It was in force for 42 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
Jul 8, 2001, 10:33 PM MDT (04:33 UTC)
Expired
Jul 8, 2001, 11:15 PM MDT
In force
42 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Piute County, UT

The radar

The Cedar City radar (KICX), 89 km from the middle of the area, began a volume at 04:35 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 00:00Z, 4.6 hours before the alert went out and 288 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, Salt Lake City I, UT at 00:00Z on 2001-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 497 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salt Lake City I, UT at 00:00Z on 2001-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 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
497 J/kg
Mixed-layer CIN
-156 J/kg
Mixed-layer LCL
1878 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
99 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WGUS55 KSLC 090438
FFWSLC

UTC031-090515-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1033 PM MDT SUN JUL 8 2001

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL PIUTE COUNTY IN UTAH
  THIS INCLUDES THE CITY OF JUNCTION...CIRCLEVILLE...KINGSTON

* UNTIL 1115 PM MDT

* AT 1023 PM MDT...WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY     
  RAIN OVER EXTREME SOUTHERN PIUTE COUNTY NEAR CIRCLEVILLE           
  ...JUNCTION AND KINGSTON.

HEAVY RAINFALL IN SOUTHERN PIUTE COUNTY COULD CAUSE WATER AND DEBRIS 
TO FLOW ACROSS STATE ROUTE 62 NEAR KINGSTON.  

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT 
SDRIVE THROUGH FLOWING WATER ON ROADWAYS.

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

LAT...LON 3816 11235 3815 11206 3823 11201 3830 11225

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 7:17 PM MDTFlash Flood WarningSLCJuab58 min
Jul 8, 10:22 PM MDTFlash Flood WarningSLCJuab, Sanpete38 min
Jul 9, 5:45 PM MDTFlash Flood WarningSLCIron105 min

Nearby

Flash Flood Warnings in Utah, 2001Every flash flood 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.