Alert archive / Utah / Flash Flood Warnings in 2008

Flash Flood Warning 2, NWS Salt Lake City, UT

January 5, 2008Washington County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Jan 5, 2008, 3:25 PM MST for Washington 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
Jan 5, 2008, 3:25 PM MST (22:25 UTC)
Expired
Jan 5, 2008, 6:30 PM MST
In force
3 hr
Issued by
NWS Salt Lake City, UT
Area
Storm-based polygon
Flood severity
None

County Washington County, UT

The radar

The Cedar City radar (KICX), 40 km from the middle of the area, began a volume at 22:26 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, 10.4 hours before the alert went out and 251 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 2008-01-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 12:00Z on 2008-01-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 511 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
653 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
511 m²/s²
0-3 km storm-relative helicity
740 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 052227
FFWSLC
UTC053-060130-
/O.NEW.KSLC.FF.W.0002.080105T2225Z-080106T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
325 PM MST SAT JAN 5 2008

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN WASHINGTON COUNTY IN UTAH...

* UNTIL 630 PM MST

* AT 314 PM MST...RAIN CONTINUES TO FALL ACROSS THE AREA AND THE 
NORTH FORK OF THE VIRGIN RIVER...THE EAST FORK OF THE VIRGIN 
RIVER...AND ALL SMALL STREAMS AND SLOT CANYONS ARE RUNNING HIGH AND 
WILL CONTINUE TO RUN HIGH FOR AT LEAST THE NEXT 3 HOURS.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ZION NP



LAT...LON 3735 11314 3748 11290 3704 11291 3707 11308
TIME...MOT...LOC 2225Z 180DEG 0KT 3717 11299

$$

DUNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 4, 9:58 PM MSTHeavy Snow WarningSLC63 hr
Jan 5, 4:44 AM MSTFlash Flood WatchSLC7 hr
Jan 5, 5:37 AM MSTWinter Storm WatchSLC10 hr
Jan 5, 8:55 AM MSTFlash Flood WarningSLCKane, Washington5 hr
Jan 5, 3:51 PM MSTSnow AdvisorySLC24 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.