Alert archive / Utah / Flash Flood Warnings in 2016

Flash Flood Warning 15, NWS Salt Lake City, UT

August 6, 2016Kane County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Aug 6, 2016, 7:26 AM MDT for Kane 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
Aug 6, 2016, 7:26 AM MDT (13:26 UTC)
Expired
Aug 6, 2016, 10:00 AM MDT
In force
3 hr
Issued by
NWS Salt Lake City, UT
Area
Storm-based polygon
Flood severity
None

County Kane County, UT

The radar

The Cedar City radar (KICX), 133 km from the middle of the area, began a volume at 13:28 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

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 1.4 hours before the alert went out and 224 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, Flgstf/Belemont, AZ at 12:00Z on 2016-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 147 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 12:00Z on 2016-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
147 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
1344 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

311 
WGUS55 KSLC 061326
FFWSLC
UTC025-061600-
/O.NEW.KSLC.FF.W.0015.160806T1326Z-160806T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
726 AM MDT SAT AUG 6 2016

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL KANE COUNTY IN UTAH...

* UNTIL 1000 AM MDT
    
* AT 723 AM MDT...THE PUBLIC REPORTED A THUNDERSTORM PRODUCING HEAVY
  RAIN OVER THE WAHWEAP CREEK DRAINAGE. FLASH FLOODING IS OCCURRING
  NEAR BIG WATER UTAH. 

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 3736 11117 3700 11143 3700 11175 3737 11163

$$

MCONGER
2 follow-up statements
533 
WGUS75 KSLC 061436
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
836 AM MDT SAT AUG 6 2016

UTC025-061600-
/O.CON.KSLC.FF.W.0015.000000T0000Z-160806T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KANE UT-
836 AM MDT SAT AUG 6 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 AM MDT FOR
SOUTH CENTRAL KANE COUNTY...

AT 832 AM MDT...THE EARLIER THUNDERSTORMS THAT GENERATED THE HEAVY
RAINFALL HAVE MOVED EAST OF THE WARNED AREA. ADDITIONAL SHOWERS AND
THUNDERSTORMS WILL MOVE INTO THE WARNED AREA FROM THE SOUTH...THOUGH
WIDESPREAD HEAVY RAINFALL IS NOT EXPECTED. FLASH FLOODING ALONG
WAHWEAP CREEK AND THE SURROUNDING DRY WASHES WILL CONTINUE.  

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 3736 11117 3700 11143 3700 11175 3737 11163

$$

MCONGER
551 
WGUS75 KSLC 061600
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1000 AM MDT SAT AUG 6 2016

UTC025-061608-
/O.EXP.KSLC.FF.W.0015.000000T0000Z-160806T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KANE UT-
1000 AM MDT SAT AUG 6 2016

...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL KANE COUNTY WILL EXPIRE
AT 1000 AM MDT...

SHOWERS AND THUNDERSTORMS HAVE ENDED ACROSS THE WARNED AREA. FLOODING
IS NO LONGER EXPECTED TO POSE A THREAT.

LAT...LON 3736 11117 3700 11143 3700 11175 3737 11163

$$

MCONGER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 3:46 AM MDTFlash Flood WarningSLCWashington3 hr
Aug 6, 1:38 PM MDTSpecial Weather StatementSLCSalt Lake37 min
Aug 6, 2:08 PM MDTSevere Thunderstorm WarningSLCSalt Lake, Utah37 min
Aug 6, 2:22 PM MDTAreal Flood AdvisorySLCSalt Lake53 min
Aug 6, 2:44 PM MDTSpecial Weather StatementSLCSalt Lake46 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.