Alert archive / Utah / Flash Flood Warnings in 2004

Flash Flood Warning 9, NWS Salt Lake City, UT

June 29, 2004Garfield County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Jun 29, 2004, 3:18 PM MDT for Garfield County, Utah. It was in force for 102 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: Jun 29, 2004, 3:18 PM MDT (21:18 UTC)
Expired: Jun 29, 2004, 5:00 PM MDT
In force: 102 min
Issued by: NWS Salt Lake City, UT
Area: Counties, with a storm outline in the text

County Garfield County, UT

The radar

The Cedar City radar (KICX), 115 km from the middle of the area, began a volume at 21:20 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, 9.3 hours before the alert went out and 286 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: 58 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 1817 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 139 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 292121
FFWSLC
UTC017-292300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
318 PM MDT TUE JUN 29 2004

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL GARFIELD COUNTY IN UTAH
  THIS INCLUDES THE CITY OF ESCALANTE
  GRAND STAIRCASE NATIONAL MONUMENT
  CALF CREEK RECREATION AREA

* UNTIL 500 PM MDT

* AT 312 PM MDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY       
  HEAVY RAIN OVER ESCALANTE...MOVING NORTHEAST AT 5 MPH.             
  THUNDERSTORMS WERE REDEVELOPING IN THE SAME REGION AND RADAR       
  ESTIMATES OF 1.50 INCHES ARE INDICATED WITHIN THE PAST HOUR.


* THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL BE...
OVER RURAL CENTRAL GARFIELD COUNTY AT 330 PM MDT
RAINFALL RUNOFF WILL ENTER INTO THE ESCALANTE RIVER

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS 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.

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 3772 11171 3769 11149 3790 11139 3795 11162

$$

1 follow-up statement

329 
RWUS32 KSLC 292308
FFSSLC
UTC017-300100-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
505 PM MDT TUE JUN 29 2004

...FLASH FLOOD WARNING ALLOWED TO EXPIRE AT 5 PM...

HEAVY RAIN FROM THUNDERSTORMS CAUSE LOCAL STREET AND BASEMENT 
FLOODING IN THE ESCALANTE AREA AND RAPID RISES TO THE ESCALANTE 
RIVER. A WEATHER SPOTTER REPORTED 2.31 INCHES OF RAIN BETWEEN 230 
AND 400 PM. NATIONAL WEATHER SERVICE RADAR ESTIMATES INDICATE THAT 
AS MUCH AS 3 INCHES MAY HAVE FALLEN IN ESCALANTE. 

THUNDERSTORMS HAVE MOVED TO THE EAST OF THIS AREA THEREFORE THE 
FLASH FLOODING WARNING HAS BEEN ALLOWED TO EXPIRE. RUNOFF FROM THE 
THUNDERSTORMS MAY STILL CAUSE RISES DOWNSTREAM IN THE ESCALANTE 
RIVER THROUGH 6 PM.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 2:19 PM MDT	Severe Thunderstorm Warning	SLC	Washington	41 min

Nearby

Flash Flood Warnings in Utah, 2004 Every flash flood warning in 2004

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.