Alert archive / Utah / Flash Flood Warnings in 2016

Flash Flood Warning 23, NWS Salt Lake City, UT

August 26, 2016Garfield County, Wayne County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Aug 26, 2016, 3:32 PM MDT for Garfield County, Wayne County, Utah. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 26, 2016, 3:32 PM MDT (21:32 UTC)
Expired
Aug 26, 2016, 6:30 PM MDT
In force
3 hr
Issued by
NWS Salt Lake City, UT
Area
Storm-based polygon
Flood severity
None

Counties Garfield County, UT, Wayne County, UT

The radar

The Cedar City radar (KICX), 164 km from the middle of the area, began a volume at 21:36 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.

What was reported inside it

TimeReportWhereRemark
Aug 26, 4:00 PM MDTFLASH FLOOD2 S Fruita, UTFLASH FLOODING REPORTED ALONG GRAND WASH.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Grand Junction, CO (KGJT), launched 12:00Z, 9.5 hours before the alert went out and 253 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, Grand Junction, CO at 12:00Z on 2016-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Grand Junction, CO at 12:00Z on 2016-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1432 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

945 
WGUS55 KSLC 262134
FFWSLC
UTC017-055-270030-
/O.NEW.KSLC.FF.W.0023.160826T2132Z-160827T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
332 PM MDT FRI AUG 26 2016

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL WAYNE COUNTY IN UTAH...
  NORTHEASTERN GARFIELD COUNTY IN UTAH...

* UNTIL 630 PM MDT
    
* AT 332 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN OVER CAPITOL REEF NATIONAL PARK. FLASH FLOODING IS
  EXPECTED TO BEGIN SHORTLY ALONG SULPHUR CREEK...THE GRAND WASH AND
  CAPITOL GORGE. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CAPITOL REEF NATIONAL PARK AND FRUITA. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMAIN ALERT FOR FLOODING EVEN IN LOCATIONS NOT RECEIVING RAIN. DRY
WASHES...STREAMS...AND RIVERS CAN BECOME RAGING KILLER CURRENTS IN A
MATTER OF MINUTES...EVEN FROM DISTANT RAINFALL.

&&

LAT...LON 3829 11112 3815 11110 3815 11121 3834 11136

$$

MPS
2 follow-up statements
790 
WGUS75 KSLC 262225
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
423 PM MDT FRI AUG 26 2016

UTC017-055-270030-
/O.CON.KSLC.FF.W.0023.000000T0000Z-160827T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-GARFIELD UT-
423 PM MDT FRI AUG 26 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM MDT FOR
SOUTH CENTRAL WAYNE AND NORTHEASTERN GARFIELD COUNTIES...

AT 423 PM MDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN CONTINUED ACROSS PORTIONS OF CAPITOL REEF NATIONAL PARK
INCLUDING THE GRAND WASH.  RAINFALL IN EXCESS OF ONE INCH HAS FALLEN
OVER THE GRAND WASH, AND IS LIKELY RESULTING IN FLASH FLOODING. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
THE GRAND WASH AND CAPITOL GORGE WITHIN CAPITOL REEF NATIONAL PARK. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMAIN ALERT FOR FLOODING EVEN IN LOCATIONS NOT RECEIVING RAIN. DRY
WASHES...STREAMS...AND RIVERS CAN BECOME RAGING KILLER CURRENTS IN A
MATTER OF MINUTES...EVEN FROM DISTANT RAINFALL.

&&

LAT...LON 3829 11112 3815 11110 3815 11121 3834 11136

$$

MPS
176 
WGUS75 KSLC 270037
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
637 PM MDT FRI AUG 26 2016

UTC017-055-270047-
/O.EXP.KSLC.FF.W.0023.000000T0000Z-160827T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-GARFIELD UT-
637 PM MDT FRI AUG 26 2016

...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL WAYNE AND NORTHEASTERN
GARFIELD COUNTIES HAS EXPIRED...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3829 11112 3815 11110 3815 11121 3834 11136

$$

MPS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 1:44 PM MDTSpecial Weather StatementSLC31 min
Aug 26, 2:23 PM MDTSpecial Weather StatementSLCKane52 min
Aug 26, 2:28 PM MDTSpecial Weather StatementSLCDuchesne47 min
Aug 26, 2:29 PM MDTSevere Thunderstorm WarningSLCGarfield, Wayne30 min
Aug 26, 3:43 PM MDTSpecial Weather StatementSLCGarfield47 min
Aug 26, 3:55 PM MDTFlash Flood WarningSLCGarfield3 hr
Aug 26, 4:00 PM MDTSpecial Weather StatementSLCCarbon30 min
Aug 26, 5:50 PM MDTSpecial Weather StatementSLC55 min

Nearby

Flash Flood Warnings in Utah, 2016Every flash flood warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.