Alert archive / Utah / Flash Flood Warnings in 2000

Flash Flood Warning 5, NWS Salt Lake City, UT

July 1, 2000Emery County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Jul 1, 2000, 5:54 PM MDT for Emery County, Utah. It was in force for 2 hr. 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 1, 2000, 5:54 PM MDT (23:54 UTC)
Expired: Jul 1, 2000, 8:00 PM MDT
In force: 2 hr
Issued by: NWS Salt Lake City, UT
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Emery County, UT

The radar

The Grand Junction radar (KGJX), 215 km from the middle of the area, began a volume at 23:58 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

Grand Junction, CO (KGJT), launched 12:00Z, 11.9 hours before the alert went out and 190 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: 7 J/kg
Mixed-layer CIN: -201 J/kg
Mixed-layer LCL: 2335 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: -9 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 
WGUS55 KSLC 020001
FFWSLC
UTC015-020200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
554 PM MDT SAT JUL 1 2000

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A FLASH
FLOOD WARNING EFFECTIVE UNTIL 800 PM MDT SATURDAY EVENING FOR PEOPLE
IN THE FOLLOWING COUNTY

IN UTAH
     EMERY

INCLUDING THE FOLLOWING LOCATIONS
     EMERY...AND ALONG I-70

AT 545 PM MDT WEATHER SPOTTERS REPORTED A FLASH FLOOD ALONG MILLERS 
CANYON ROAD SOUTH OF EMERY.  A FOOT OF WATER COVERED THE ROADWAY.  
THUNDERSTORMS HAVE BEEN STATIONARY OVER EMERY COUNTY FOR THE PAST 3 
HOURS...AND FLASH FLOODING IS VERY LIKELY ELSEWHERE IN THE COUNTY.  
TRAVELERS ALONG I-70 BETWEEN EXIT 89 AND GREEN RIVER SHOULD BE ALERT 
FOR WATER COVERING THE INTERSTATE.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. 
PERSONS ALONG WASHES AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO 
PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING 
WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR 
VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND.



LAT...LON 3942 11041 3876 11037 3873 11110 3939 11123

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 6:30 PM MDT	Severe Thunderstorm Warning	SLC	Utah	30 min
Jul 1, 2:25 PM MDT	Severe Thunderstorm Warning	SLC	Emery	35 min

Nearby

Flash Flood Warnings in Utah, 2000 Every flash flood warning in 2000

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.