Alert archive / Utah / Flash Flood Warnings in 2012

Flash Flood Warning 10, NWS Salt Lake City, UT

July 16, 2012Wayne County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Jul 16, 2012, 1:04 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 16, 2012, 1:04 PM MDT (19:04 UTC)
Expired: Jul 16, 2012, 4:00 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), 165 km from the middle of the area, began a volume at 19:06 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 16, 2:25 PM MDT	FLASH FLOOD	3 W Capitol Reef Np, UT	FLASH FLOOD ON SULPHUR CREEK IN CAPITOL REEF NATIONAL PARK. WATER CROSSED SR24.

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, 7.1 hours before the alert went out and 253 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: 36 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 1548 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 30 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.

270 
WGUS55 KSLC 161904
FFWSLC
UTC055-162200-
/O.NEW.KSLC.FF.W.0010.120716T1904Z-120716T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
104 PM MDT MON JUL 16 2012

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CAPITOL REEF NATIONAL PARK IN WESTERN WAYNE COUNTY IN UTAH 

* UNTIL 400 PM MDT

* AT 1257 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  HEAVY RAIN FROM A THUNDERSTORM MOVING OVER SULPHUR CREEK IN 
  CAPITOL REEF NATIONAL PARK. HEAVY RAIN WILL CONTINUE THROUGH 2 
  PM...LIKELY RESULTING IN FLASH FLOODING. 

* FLASH FLOODING CAN BE EXPECTED ALONG SULPHUR CREEK WITHIN CAPITOL 
  REEF NATIONAL PARK. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE 
  NOT LIMITED TO FRUITA.

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 3842 11120 3832 11112 3821 11112 3822 11132
      3834 11140

$$

MPS

3 follow-up statements

756 
WGUS75 KSLC 162002
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
202 PM MDT MON JUL 16 2012

UTC055-162200-
/O.CON.KSLC.FF.W.0010.000000T0000Z-120716T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-
202 PM MDT MON JUL 16 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 PM MDT FOR 
WESTERN WAYNE COUNTY INCLUDING CAPITOL REEF NATIONAL PARK...

AT 158 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS HAVE EXITED THE AREA...HOWEVER RUNOFF FROM EARLIER 
RAINFALL IS LIKELY STILL RESULTING IN FLASH FLOODING ALONG SULPHUR 
CREEK IN CAPITOL REEF NATIONAL PARK. THIS FLOODING WILL LIKELY 
CONTINUE THROUGH THE NEXT HOUR OR SO BEFORE DIMINISHING BY 4 PM. 

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 3842 11120 3832 11112 3821 11112 3822 11132
      3834 11140

$$

MPS

090 
WGUS75 KSLC 162038
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
238 PM MDT MON JUL 16 2012

UTC055-162200-
/O.CON.KSLC.FF.W.0010.000000T0000Z-120716T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-
238 PM MDT MON JUL 16 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 PM MDT FOR
WESTERN WAYNE COUNTY...

AT 225 PM MDT...RANGERS IN CAPITOL REEF NATIONAL PARK REPORTED FLASH 
FLOODING ALONG SULPHUR CREEK IMPACTING HIGHWAY 24. THIS FLOODING 
WILL LIKELY CONTINUE ALONG SULPHUR CREEK BEFORE DIMINISHING BY 4 PM. 

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 3842 11120 3832 11112 3821 11112 3822 11132
      3834 11140

$$

MPS

079 
WGUS75 KSLC 162152
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
352 PM MDT MON JUL 16 2012

UTC055-162201-
/O.EXP.KSLC.FF.W.0010.000000T0000Z-120716T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-
352 PM MDT MON JUL 16 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 400 PM MDT FOR WESTERN
WAYNE COUNTY...

RUNOFF FROM EARLIER PRECIPITATION HAS DIMINISHED GREATLY. 
THEREFORE...THE FLASH FLOOD WARNING HAS BEEN 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 3842 11120 3832 11112 3821 11112 3822 11132
      3834 11140

$$

MPS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 6:20 PM MDT	Severe Thunderstorm Warning	SLC	Emery	55 min
Jul 15, 8:06 PM MDT	Flash Flood Warning	SLC	Washington	4 hr
Jul 16, 1:13 PM MDT	Flash Flood Warning	SLC	Washington	11 hr
Jul 16, 1:24 PM MDT	Special Weather Statement	SLC	Tooele	66 min
Jul 16, 1:37 PM MDT	Severe Thunderstorm Warning	SLC	Kane	38 min
Jul 16, 1:49 PM MDT	Flash Flood Warning	SLC	Kane, Washington	4 hr
Jul 16, 2:00 PM MDT	Severe Thunderstorm Warning	SLC	Box Elder, Tooele	43 min
Jul 16, 2:20 PM MDT	Special Weather Statement	SLC		70 min
Jul 16, 2:26 PM MDT	Special Weather Statement	SLC		49 min
Jul 16, 2:33 PM MDT	Severe Thunderstorm Warning	SLC	Kane	27 min
Jul 16, 2:55 PM MDT	Flash Flood Warning	SLC	Kane	3 hr
Jul 16, 3:01 PM MDT	Special Weather Statement	SLC		44 min
Jul 16, 3:24 PM MDT	Special Weather Statement	SLC	Carbon	51 min
Jul 16, 4:10 PM MDT	Severe Thunderstorm Warning	SLC	Washington	50 min
Jul 16, 4:38 PM MDT	Special Weather Statement	SLC	Weber	67 min
Jul 16, 4:49 PM MDT	Special Weather Statement	SLC		26 min
Jul 16, 4:54 PM MDT	Flash Flood Warning	SLC	Utah	50 min
Jul 16, 4:56 PM MDT	Severe Thunderstorm Warning	SLC	Washington	49 min
Jul 16, 5:00 PM MDT	Special Weather Statement	SLC	Rich	60 min
Jul 16, 5:01 PM MDT	Flash Flood Warning	SLC	Washington	4 hr
Jul 16, 5:10 PM MDT	Severe Thunderstorm Warning	SLC	Salt Lake, Utah	50 min
Jul 16, 5:19 PM MDT	Severe Thunderstorm Warning	SLC	Davis, Salt Lake, Tooele	41 min
Jul 16, 5:22 PM MDT	Special Weather Statement	SLC	Cache	38 min
Jul 16, 5:28 PM MDT	Flash Flood Warning	SLC	Kane, Washington	6 hr
Jul 16, 5:54 PM MDT	Special Weather Statement	SLC	Davis, Salt Lake	51 min

Nearby

Flash Flood Warnings in Utah, 2012 Every flash flood warning in 2012

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.