Alert archive / Utah / Flash Flood Warnings in 2016

Flash Flood Warning 22, NWS Salt Lake City, UT

August 25, 2016Garfield County, Wayne County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Aug 25, 2016, 12:58 PM MDT for Garfield County, Wayne County, Utah. It was in force for 3 hr. 2 reports 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 25, 2016, 12:58 PM MDT (18:58 UTC)
Expired
Aug 25, 2016, 4:00 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), 160 km from the middle of the area, began a volume at 19:01 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 25, 2:00 PM MDTFLASH FLOOD5 Sse Fruita, UTGRAND WASH ROAD FLOODED AND SCENIC DRIVE WAS CLOSED.
Aug 25, 2:10 PM MDTFLASH FLOOD7 Sse Fruita, UTPLEASANT CREEK FLASH FLOODED.

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, 7.0 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 2016-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 59 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 2016-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 184 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
59 J/kg
Mixed-layer CIN
-309 J/kg
Mixed-layer LCL
2146 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
184 m²/s²
0-3 km storm-relative helicity
276 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

971 
WGUS55 KSLC 251858
FFWSLC
UTC017-055-252200-
/O.NEW.KSLC.FF.W.0022.160825T1858Z-160825T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1258 PM MDT THU AUG 25 2016

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN WAYNE COUNTY IN UTAH...
  NORTH CENTRAL GARFIELD COUNTY IN UTAH...

* UNTIL 400 PM MDT
    
* AT 1254 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN OVER CAPITOL REEF NATIONAL PARK...SPECIFICALLY SULFUR
  CREEK...GRAND WASH AND CAPITOL GORGE. FLASH FLOODING IS EXPECTED
  TO BEGIN SHORTLY.

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

LAT...LON 3802 11120 3835 11144 3846 11116 3808 11104

$$

MS
2 follow-up statements
556 
WGUS75 KSLC 252041
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
241 PM MDT THU AUG 25 2016

UTC017-055-252200-
/O.CON.KSLC.FF.W.0022.000000T0000Z-160825T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-GARFIELD UT-
241 PM MDT THU AUG 25 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 PM MDT FOR
WESTERN WAYNE AND NORTH CENTRAL GARFIELD COUNTIES...

AT 236 PM MDT...DOPPLER RADAR INDICATED SHOWERS AND THUNDERSTORMS
PRODUCING LOCALLY HEAVY RAIN ACROSS THE WARNED AREA.  THIS HAS
RESULTED IN FLASH FLOODING ACROSS GRAND WASH ROAD. SCENIC DRIVE HAS
BEEN CLOSED FOR PRECAUTIONARY MEASURES.

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


LAT...LON 3802 11120 3835 11144 3846 11116 3808 11104

$$

MS
586 
WGUS75 KSLC 252157
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
357 PM MDT THU AUG 25 2016

UTC017-055-252205-
/O.EXP.KSLC.FF.W.0022.000000T0000Z-160825T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-GARFIELD UT-
357 PM MDT THU AUG 25 2016

...THE FLASH FLOOD WARNING FOR WESTERN WAYNE AND NORTH CENTRAL
GARFIELD COUNTIES WILL EXPIRE AT 400 PM MDT...

FLOOD WATERS HAVE RECEDED IN CAPITOL REEF NATIONAL PARK. FLOODING IS
NO LONGER EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO HEED ANY
REMAINING ROAD CLOSURES.

LAT...LON 3802 11120 3835 11144 3846 11116 3808 11104

$$

MS

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.