Alert archive / Utah / Flash Flood Warnings in 2009

Flash Flood Warning 2, NWS Salt Lake City, UT

June 2, 2009Wayne County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Jun 2, 2009, 1:15 PM MDT for Wayne County, Utah. It was in force for 2 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
Jun 2, 2009, 1:15 PM MDT (19:15 UTC)
Expired
Jun 2, 2009, 3:15 PM MDT
In force
2 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), 159 km from the middle of the area, began a volume at 19:16 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.

The nearest sounding before it

Grand Junction, CO (KGJT), launched 12:00Z, 7.3 hours before the alert went out and 259 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 2009-06-02Temperature 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 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 2009-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 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
5 J/kg
Mixed-layer CIN
-191 J/kg
Mixed-layer LCL
1546 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
54 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 021915
FFWSLC
UTC055-022115-
/O.NEW.KSLC.FF.W.0002.090602T1915Z-090602T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
115 PM MDT TUE JUN 2 2009

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

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

* UNTIL 315 PM MDT

* AT 103 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
FLASH FLOODING FROM A THUNDERSTORM OVER FREMONT RIVER AND SULPHUR 
CREEK JUST WEST OF CAPITOL REEF NATIONAL PARK. THESE STREAMS FLOW 
EAST THROUGH THE NATIONAL PARK.

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.

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 11136 3834 11125 3827 11112 3821 11123
      3819 11137

$$

ROGOWSKI/MCINERNEY
2 follow-up statements
000 
WGUS75 KSLC 022023
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
223 PM MDT TUE JUN 2 2009

UTC055-022115-
/O.CON.KSLC.FF.W.0002.000000T0000Z-090602T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-
223 PM MDT TUE JUN 2 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 PM MDT FOR
CENTRAL WAYNE COUNTY...

AT 208 PM MDT...RAINFALL OVER THE WARNED AREA HAS DIMINISHED. IT IS 
ANTICIPATED THAT HIGH WATER CONTINUES TO FLOW THROUGH DRAINAGES 
ALONG SULPHUR CREEK AND THE FREMONT RIVER AND OTHER NEARBY 
TRIBUTARIES WITHIN CAPITOL REEF NATIONAL PARK.

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.

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 11136 3834 11125 3827 11112 3821 11123
      3819 11137

$$

ROGOWSKI/MCINERNEY
000 
WGUS75 KSLC 022107
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
307 PM MDT TUE JUN 2 2009

UTC055-022115-
/O.EXP.KSLC.FF.W.0002.000000T0000Z-090602T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-
307 PM MDT TUE JUN 2 2009

...THE FLASH FLOOD WARNING WILL EXPIRE AT 315 PM MDT FOR CENTRAL
WAYNE COUNTY...

THOUGH NO FLOODING HAS BEEN REPORTED...SULPHUR CREEK WITHIN CAPITOL 
REEF NATIONAL PARK IS RUNNING HIGH. PERSONS WHO MAY VENTURE NEAR 
THESE AREAS SHOULD USE PRUDENT JUDGEMENT.

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 3837 11136 3834 11125 3827 11112 3821 11123
      3819 11137

$$

ROGOWSKI/MCINERNEY

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 9:23 PM MDTAreal Flood AdvisorySLCBox Elder, Davis, Weber3 hr
Jun 2, 12:51 PM MDTSevere Thunderstorm WarningSLCEmery, Sevier54 min
Jun 2, 2:35 PM MDTSevere Thunderstorm WarningSLCUtah, Wasatch21 min
Jun 2, 4:20 PM MDTSevere Thunderstorm WarningSLCTooele40 min
Jun 2, 4:53 PM MDTSevere Thunderstorm WarningSLCTooele52 min
Jun 2, 5:05 PM MDTSevere Thunderstorm WarningSLCBox Elder, Tooele55 min

Nearby

Flash Flood Warnings in Utah, 2009Every flash flood warning in 2009

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.