Alert archive / Utah / Flash Flood Warnings in 2008

Flash Flood Warning 9, NWS Salt Lake City, UT

July 22, 2008Garfield County, Wayne County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Jul 22, 2008, 12:15 PM MDT for Garfield County, Wayne County, Utah. It was in force for 3 hr. 2 reports 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 22, 2008, 12:15 PM MDT (18:15 UTC)
Expired
Jul 22, 2008, 3:15 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), 155 km from the middle of the area, began a volume at 18:16 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

TimeReportWhereRemark
Jul 22, 12:45 PM MDTFLASH FLOOD3 E Torrey, UTSCENIC DRIVE IN CAPITOL REEF NP WAS CLOSED DUE TO FLASH FLOOD.
Jul 22, 1:25 PM MDTFLASH FLOOD3 E Torrey, UTSCENIC DRIVE IN CAPITOL REEF NP WAS CLOSED DUE TO FLASH FLOOD.

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, 6.3 hours before the alert went out and 262 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 2008-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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 2008-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 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
2 J/kg
Mixed-layer CIN
-309 J/kg
Mixed-layer LCL
1943 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
91 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 221816
FFWSLC
UTC017-055-222115-
/O.NEW.KSLC.FF.W.0009.080722T1815Z-080722T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1215 PM MDT TUE JUL 22 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 315 PM MDT

* AT 1207 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR 
INDICATED   FLASH FLOODING FROM A THUNDERSTORM OVER TRIBUTARIES AND 
STREAMS IN CAPITOL REEF NATIONAL PARK.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TORREY...
  TEASDALE AND CAPITOL REEF NP

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 3841 11151 3832 11106 3809 11101 3805 11143

$$

MCINERNEY/HOSENFELD
2 follow-up statements
000 
WGUS75 KSLC 221931
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
129 PM MDT TUE JUL 22 2008

UTC017-055-222115-
/O.CON.KSLC.FF.W.0009.000000T0000Z-080722T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GARFIELD UT-WAYNE UT-
129 PM MDT TUE JUL 22 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 PM MDT FOR
CENTRAL WAYNE AND NORTH CENTRAL GARFIELD COUNTIES...

AT 122 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE FLASH FLOODING ALONG THE SCENIC DRIVE IN CAPITOL REEF 
NATIONAL PARK. THE PARK SERVICE CLOSED THE SCENIC DRIVE DUE TO 
FLOODING. ADDITIONAL THUNDERSTORM ACTIVITY IS POSSIBLE.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TORREY...
TEASDALE AND CAPITOL REEF NP

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT
TUESDAY EVENING FOR CENTRAL UTAH AND SOUTHWEST WYOMING.

LAT...LON 3841 11151 3832 11106 3809 11101 3805 11143

$$

NEUMAN/HOSENFELD
000 
WGUS75 KSLC 222103
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
300 PM MDT TUE JUL 22 2008

UTC017-055-222115-
/O.CON.KSLC.FF.W.0009.000000T0000Z-080722T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GARFIELD UT-WAYNE UT-
300 PM MDT TUE JUL 22 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 PM MDT FOR
CENTRAL WAYNE AND NORTH CENTRAL GARFIELD COUNTIES...

AT 254 PM MDT...THUNDERSTORM ACTIVITY OVER CAPITOL REEF NATIONAL 
PARK HAS DIMINISHED.  AS A RESULT...FLOOD WATERS THAT AFFECTED THE 
SCENIC ROADWAY OF THE PARK HAVE ALSO SUBSIDED.  THE FLASH FLOOD 
WARNING FOR THIS AREA HAS BEEN ALLOWED TO EXPIRE. 

ADDITIONALLY...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 
900 PM MDT TUESDAY EVENING FOR CENTRAL UTAH AND SOUTHWEST WYOMING.

LAT...LON 3841 11151 3832 11106 3809 11101 3805 11143

$$

MCINERNEY/HOSENFELD

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 1:27 PM MDTSevere Thunderstorm WarningSLCSalt Lake33 min
Jul 22, 1:54 PM MDTAreal Flood AdvisorySLCSalt Lake3 hr
Jul 22, 1:59 PM MDTSevere Thunderstorm WarningSLCDuchesne, Wasatch27 min

Nearby

Flash Flood Warnings in Utah, 2008Every 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.