Alert archive / Utah / Flash Flood Warnings in 2013

Flash Flood Warning 39, NWS Salt Lake City, UT

July 28, 2013Wayne County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Jul 28, 2013, 3:03 PM MDT for 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: Jul 28, 2013, 3:03 PM MDT (21:03 UTC)
Expired: Jul 28, 2013, 6:00 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), 159 km from the middle of the area, began a volume at 21:03 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

Time	Report	Where	Remark
Jul 28, 5:15 PM MDT	FLASH FLOOD	Capitol Reef Np, UT	FLOODING AT SULPHUR CREEK IN CAPITOL REEF NP

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, 9.1 hours before the alert went out and 259 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: 298 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 788 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

780 
WGUS55 KSLC 282103
FFWSLC
UTC055-290000-
/O.NEW.KSLC.FF.W.0039.130728T2103Z-130729T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
303 PM MDT SUN JUL 28 2013

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

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

* UNTIL 600 PM MDT

* AT 254 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  HEAVY RAIN FROM A THUNDERSTORM OVER THE SULPHUR CREEK DRAINAGE. 

* FLASH FLOODING CAN BE EXPECTED ALONG SULPHUR CREEK WITHIN CAPITOL 
  REEF NATIONAL PARK. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 3835 11137 3831 11119 3825 11120 3827 11136

$$

MPS

3 follow-up statements

888 
WGUS75 KSLC 282219
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
419 PM MDT SUN JUL 28 2013

UTC055-290000-
/O.CON.KSLC.FF.W.0039.000000T0000Z-130729T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-
419 PM MDT SUN JUL 28 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM MDT FOR
CENTRAL WAYNE COUNTY...

AT 413 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED UP 
TO ONE HALF INCH OF RAIN FELL ACROSS THE SULPHUR CREEK DRAINAGE FROM 
EARLIER THUNDERSTORMS. 

CAPITOL REEF NATIONAL PARK RANGERS INDICATED WASHES FLOWING INTO 
SULPHUR CREEK WERE ACTIVE...AND WOULD LIKELY PRODUCE A FLASH FLOOD 
ALONG SULPHUR CREEK AS FLOWS THROUGH CAPITOL REEF TO ITS TERMINATION 
AT THE FREMONT RIVER. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 3835 11137 3831 11119 3825 11120 3827 11136

$$

MPS

803 
WGUS75 KSLC 282320
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
520 PM MDT SUN JUL 28 2013

UTC055-290000-
/O.CON.KSLC.FF.W.0039.000000T0000Z-130729T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-
520 PM MDT SUN JUL 28 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM MDT FOR
CENTRAL WAYNE COUNTY...

AT 514 PM MDT...NATIONAL PARK SERVICE RANGERS REPORTED FLASH 
FLOODING ALONG SULPHUR CREEK WITHIN CAPITOL REEF NATIONAL PARK. 
FLASH FLOODING WILL CONTINUE ALONG SULPHUR CREEK AS THIS WATER WORKS 
DOWNSTREAM TO THE FREMONT RIVER. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 3835 11137 3831 11119 3825 11120 3827 11136

$$

MPS

023 
WGUS75 KSLC 282353
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
553 PM MDT SUN JUL 28 2013

UTC055-290002-
/O.EXP.KSLC.FF.W.0039.000000T0000Z-130729T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-
553 PM MDT SUN JUL 28 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 600 PM MDT FOR CENTRAL
WAYNE COUNTY...

RUNOFF FROM EARLIER PRECIPITATION HAS DIMINISHED ALONG SULPHUR CREEK 
WITHIN CAPITOL REEF NATIONAL PARK AND ADDITIONAL FLASH FLOODING IS 
NOT ANTICIPATED. THEREFORE...THE FLASH FLOOD WARNING WILL BE ALLOWED 
TO EXPIRE. MONITOR NOAA WEATHER RADIO OR LOCAL TELEVISION OR RADIO 
FOR THE LATEST WEATHER INFORMATION.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

LAT...LON 3835 11137 3831 11119 3825 11120 3827 11136

$$

MPS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 7:37 PM MDT	Flash Flood Warning	SLC	Iron, Washington	3 hr
Jul 28, 10:24 AM MDT	Flash Flood Watch	SLC		16 hr
Jul 28, 12:37 PM MDT	Areal Flood Advisory	SLC	Kane	3 hr
Jul 28, 1:32 PM MDT	Flash Flood Warning	SLC	Kane	6 hr
Jul 28, 2:14 PM MDT	Areal Flood Advisory	SLC	Salt Lake	3 hr
Jul 28, 3:12 PM MDT	Severe Thunderstorm Warning	SLC	Duchesne	63 min
Jul 28, 3:14 PM MDT	Special Weather Statement	SLC	Cache	46 min
Jul 28, 3:37 PM MDT	Flash Flood Warning	SLC	Kane, Washington	4 hr
Jul 28, 4:54 PM MDT	Severe Thunderstorm Warning	SLC	Juab	66 min
Jul 28, 5:02 PM MDT	Special Weather Statement	SLC	Box Elder, Tooele	73 min
Jul 28, 5:44 PM MDT	Severe Thunderstorm Warning	SLC	Box Elder	61 min
Jul 28, 5:57 PM MDT	Severe Thunderstorm Warning	SLC	Tooele	78 min

Nearby

Flash Flood Warnings in Utah, 2013 Every flash flood warning in 2013

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.