Alert archive / Utah / Flash Flood Warnings in 2015

Flash Flood Warning 39, NWS Salt Lake City, UT

July 14, 2015Garfield County, Wayne County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Jul 14, 2015, 3:31 PM MDT for Garfield County, Wayne County, Utah. It was in force for 119 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
Jul 14, 2015, 3:31 PM MDT (21:31 UTC)
Expired
Jul 14, 2015, 5:30 PM MDT
In force
119 min
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), 169 km from the middle of the area, began a volume at 21:32 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, 9.5 hours before the alert went out and 248 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 2015-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 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 2015-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 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
5 J/kg
Mixed-layer CIN
-211 J/kg
Mixed-layer LCL
2220 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
56 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.

240 
WGUS55 KSLC 142131
FFWSLC
UTC017-055-142330-
/O.NEW.KSLC.FF.W.0039.150714T2131Z-150714T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
331 PM MDT TUE JUL 14 2015

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 530 PM MDT
    
* AT 328 PM MDT...NATIONAL PARK RANGERS CONTINUED TO REPORT FLASH 
  FLOODING IN CAPITOL REEF NATIONAL PARK. THIS FLOODING INCLUDES 
  SIGNIFICANT STANDING WATER ON THE SCENIC DRIVE...AS WELL AS 
  FLOODING CONTINUING IN CAPITOL GORGE AND GRAND WASH. 

 THIS FLASH FLOOD WARNING NOW CONTINUES THROUGH 530 PM...AND ALSO 
INCLUDES THE NOTOM ROAD AND SHEETS GULCH...WHICH HAVE RECEIVED 
ADDITIONAL HEAVY RAINFALL THIS AFTERNOON.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  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 3833 11105 3808 11101 3807 11117 3826 11126

$$

SCHOENING
1 follow-up statement
655 
WGUS75 KSLC 142242
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
442 PM MDT TUE JUL 14 2015

UTC017-055-142330-
/O.CON.KSLC.FF.W.0039.000000T0000Z-150714T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-GARFIELD UT-
442 PM MDT TUE JUL 14 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 PM MDT FOR
SOUTH CENTRAL WAYNE AND NORTHEASTERN GARFIELD COUNTIES...

AT 438 PM MDT...NATIONAL PARK RANGERS CONTINUED TO REPORT FLASH   
FLOODING IN CAPITOL REEF NATIONAL PARK. THIS FLOODING INCLUDES   
SIGNIFICANT STANDING WATER ON THE SCENIC DRIVE...AS WELL AS   
FLOODING CONTINUING IN CAPITOL GORGE AND GRAND WASH. HIGH FLOWS ARE 
ALSO OCCURRING ALONG SULPHUR CREEK AND PLEASANT CREEK...AS WELL AS 
ALL WASHES ASSOCIATED WITH THESE TWO CREEKS. 

WITH HEAVY RAINFALL CONTINUING ON THE EASTERN BORDER OF CAPITOL REEF 
NATIONAL PARK...FLASH FLOODING IS STILL ALSO POSSIBLE ALONG NOTOM 
ROAD AND SHEETS GULCH.

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 3833 11105 3808 11101 3807 11117 3826 11126

$$

SCHOENING

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 12:31 PM MDTFlash Flood WarningSLCWayne3 hr
Jul 14, 1:53 PM MDTFlash Flood WarningSLCEmery4 hr
Jul 14, 1:53 PM MDTSevere Thunderstorm WarningSLCEmery37 min
Jul 14, 2:14 PM MDTSevere Thunderstorm WarningSLCEmery31 min
Jul 14, 2:45 PM MDTSevere Thunderstorm WarningSLCCarbon25 min
Jul 14, 5:29 PM MDTFlash Flood WarningSLCGarfield, Wayne5 hr

Nearby

Flash Flood Warnings in Utah, 2015Every flash flood warning in 2015

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.