Alert archive / Utah / Flash Flood Warnings in 2016

Flash Flood Warning 3, NWS Salt Lake City, UT

July 19, 2016Wayne County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Jul 19, 2016, 4:59 PM MDT for Wayne County, Utah. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 19, 2016, 4:59 PM MDT (22:59 UTC)
Expired
Jul 19, 2016, 8:00 PM MDT
In force
3 hr
Issued by
NWS Salt Lake City, UT
Area
Storm-based polygon
Flood severity
None

County Wayne County, UT

The radar

The Cedar City radar (KICX), 161 km from the middle of the area, began a volume at 23:00 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, 11.0 hours before the alert went out and 257 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 2016-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 32 joules per kilogram.LCLLFCEL10008507005003002001001 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 2016-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.1939Sfc1 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
32 J/kg
Mixed-layer CIN
-167 J/kg
Mixed-layer LCL
1186 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
104 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

863 
WGUS55 KSLC 192259
FFWSLC
UTC055-200200-
/O.NEW.KSLC.FF.W.0003.160719T2259Z-160720T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
459 PM MDT TUE JUL 19 2016

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN WAYNE COUNTY IN UTAH...

* UNTIL 800 PM MDT
    
* AT 455 PM MDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN OVER CAPITOL REEF NATIONAL PARK. FLASH FLOODING IS
  EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... 
  CAPITOL REEF NATIONAL PARK...SULPHUR CREEK...GRAND WASH...
  THE SCENIC DRIVE AND FRUITA. THE FREMONT RIVER WILL ALSO 
  EXPERIENCE ENHANCED DRAINAGE.  IN ADDITION...
  HEAVY RAINFALL IS FALLING IN THE CATHEDRAL VALLEY OF CAPITOL REEF
  NATIONAL PARK AND ADDITIONAL FLASH FLOODING IS EXPECTED IN THIS
  AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3846 11122 3817 11108 3815 11121 3826 11142
      3840 11151

$$

CRK
2 follow-up statements
832 
WGUS75 KSLC 200035
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
635 PM MDT TUE JUL 19 2016

UTC055-200200-
/O.CON.KSLC.FF.W.0003.000000T0000Z-160720T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-
635 PM MDT TUE JUL 19 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 PM MDT FOR
WESTERN WAYNE COUNTY...

AT 633 PM MDT...DOPPLER RADAR INDICATED HEAVY RAIN HAS
OCCURRED ACROSS PORTIONS OF CAPITOL REEF NATIONAL PARK.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... 
  CAPITOL REEF NATIONAL PARK...SULPHUR CREEK...GRAND WASH...
  THE SCENIC DRIVE AND FRUITA. THE FREMONT RIVER WILL ALSO 
  EXPERIENCE ENHANCED DRAINAGE.  IN ADDITION...
  HEAVY RAINFALL IS FALLING IN THE CATHEDRAL VALLEY OF CAPITOL REEF
  NATIONAL PARK AND ADDITIONAL FLASH FLOODING IS EXPECTED IN THIS
  AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3846 11122 3817 11108 3815 11121 3826 11142
      3840 11151

$$

CRK
275 
WGUS75 KSLC 200155
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
755 PM MDT TUE JUL 19 2016

UTC055-200202-
/O.EXP.KSLC.FF.W.0003.000000T0000Z-160720T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-
755 PM MDT TUE JUL 19 2016

...THE FLASH FLOOD WARNING FOR WESTERN WAYNE COUNTY WILL EXPIRE AT
800 PM MDT...

THE HEAVY RAIN HAS ENDED OVER CAPITOL REEF NATIONAL PARK. ALTHOUGH
AREA STREAMS INCLUDING SULPHUR CREEK MAY CONTINUE TO SEE ELEVATED
FLOWS, FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. PLEASE
CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3846 11122 3817 11108 3815 11121 3826 11142
      3840 11151

$$

LC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 6:07 PM MDTSpecial Weather StatementSLCSalt Lake23 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.