Alert archive / Utah / Flash Flood Warnings in 2008

Flash Flood Warning 7, NWS Salt Lake City, UT

July 16, 2008Garfield County, Wayne County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Jul 16, 2008, 1:13 PM MDT for Garfield County, 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, 2008, 1:13 PM MDT (19:13 UTC)
Expired: Jul 16, 2008, 4:15 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), 162 km from the middle of the area, began a volume at 19:14 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, 2:05 PM MDT	FLASH FLOOD	10 Se Torrey, UT	FLASH FLOOD IN CAPITOL GORGE AND GRAND WASH OF CAPITOL REEF NATIONAL PARK. LAW ENFORCEMENT LOOKING TO FIND TWO MISSING HIKERS IN CAPITOL GORGE.

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, 7.2 hours before the alert went out and 255 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3345 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 59 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.

000 
WGUS55 KSLC 161916
FFWSLC
UTC017-055-162215-
/O.NEW.KSLC.FF.W.0007.080716T1913Z-080716T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
113 PM MDT WED JUL 16 2008

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

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

* UNTIL 415 PM MDT

* AT 106 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
FLASH FLOODING FROM A SERIES OF THUNDERSTORMS OVER CAPITOL REEF 
NATIONAL PARK AND TRIBUTARIES THAT FLOW INTO THE PARK.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CAPITOL   
REEF NP. WATERWAYS THAT MAY BE AFFECTED INCLUDE CAPITOL GORGE...THE 
GRAND WASH...AND SPRING CREEK...WHICH IS LOCATED TO THE WEST OF THE 
PARK.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

LAT...LON 3837 11138 3834 11102 3814 11103 3798 11121

$$

MCINERNEY

2 follow-up statements

000 
WGUS75 KSLC 162103
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
257 PM MDT WED JUL 16 2008

UTC017-055-162215-
/O.CON.KSLC.FF.W.0007.000000T0000Z-080716T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GARFIELD UT-WAYNE UT-
257 PM MDT WED JUL 16 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM MDT FOR
CENTRAL WAYNE AND NORTH CENTRAL GARFIELD COUNTIES...

AT 248 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE FLASH FLOODING OVER THE WARNED AREA.  ALSO...CAPITOL REEF 
PARK RANGERS HAVE CLOSED THE CAPITOL GORGE AND GRAND WASH HIKING 
AREAS DUE TO THE FLASH FLOOD MOVING THROUGH THESE AREAS.  

RAINFALL CONTINUES TO THE WEST OF CAPITOL REEF NATIONAL PARK...AND 
IS EXPECTED TO PRODUCE ADDITIONAL FLOWS TO THE ALREADY FLOODED 
AREAS. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CAPITOL REEF
NP

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

LAT...LON 3837 11138 3834 11102 3814 11103 3798 11121

$$

MCINERNEY

000 
WGUS75 KSLC 162215
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
413 PM MDT WED JUL 16 2008

UTC017-055-162223-
/O.EXP.KSLC.FF.W.0007.000000T0000Z-080716T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GARFIELD UT-WAYNE UT-
413 PM MDT WED JUL 16 2008

...THE FLASH FLOOD WARNING WILL EXPIRE AT 415 PM MDT FOR CENTRAL
WAYNE AND NORTH CENTRAL GARFIELD COUNTIES...

FLOOD WATERS IN CAPITOL REEF NATIONAL PARK HAVE RECEDED.  ALSO...TWO 
VISITORS HIKING IN CAPITOL GORGE HAVE BEEN FOUND.

ALTHOUGH THE FLOOD WATERS HAVE RECEDED...IT IS POSSIBLE ADDITIONAL 
RAINFALL CAN BRING THESE WATERWAYS BACK TO HIGHER LEVELS. PLEASE 
USE CAUTION IF YOU ARE TRAVELING THROUGH THESE AREAS TONIGHT.


LAT...LON 3837 11138 3834 11102 3814 11103 3798 11121

$$

MCINERNEY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 3:18 AM MDT	Flash Flood Watch	SLC		19 hr

Nearby

Flash Flood Warnings in Utah, 2008 Every flash flood warning in 2008

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.