Alert archive / Utah / Areal Flood Warnings in 2014

Areal Flood Warning 3, NWS Salt Lake City, UT

September 27, 20147 counties in Utah

NWS Salt Lake City, UT issued this areal flood warning at Sep 27, 2014, 2:32 PM MDT for 7 counties in Utah. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 27, 2014, 2:32 PM MDT (20:32 UTC)
Expired: Sep 27, 2014, 10:30 PM MDT
In force: 8 hr
Issued by: NWS Salt Lake City, UT
Area: Storm-based polygon
Flood severity: None

Counties Emery County, UT, Garfield County, UT, Iron County, UT, Kane County, UT, Piute County, UT, San Juan County, UT, Wayne County, UT

The radar

The Cedar City radar (KICX), 134 km from the middle of the area, began a volume at 20:34 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, 8.5 hours before the alert went out and 314 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: 699 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 686 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Salt Lake City, UT wrote its last area forecast discussion before this areal flood warning went out at Sep 27, 11:02 AM MDT, 3 hours 30 minutes earlier.

Area forecast discussion, Sep 27, 11:02 AM MDT, 3 hours 30 minutes before

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Hazardous weather outlook, Sep 27, 3:04 AM MDT, 11 hours 28 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
304 AM MDT SAT SEP 27 2014

UTZ001>016-019>021-517-518-WYZ021-281300-
CACHE VALLEY/UTAH PORTION-NORTHERN WASATCH FRONT-
SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH FRONT-
GREAT SALT LAKE DESERT AND MOUNTAINS-WASATCH MOUNTAIN VALLEYS-
WASATCH MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80-
WESTERN UINTA MOUNTAINS-WASATCH PLATEAU/BOOK CLIFFS-
WESTERN UINTA BASIN-CASTLE COUNTRY-SAN RAFAEL SWELL-
SANPETE/SEVIER VALLEYS-WEST CENTRAL UTAH-SOUTHWEST UTAH-
UTAHS DIXIE AND ZION NATIONAL PARK-SOUTH CENTRAL UTAH-
GLEN CANYON RECREATION AREA/LAKE POWELL-CENTRAL MOUNTAINS-
SOUTHERN MOUNTAINS-SOUTHWEST WYOMING-
304 AM MDT SAT SEP 27 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF
UTAH AND SOUTHWEST WYOMING.

.DAY ONE...TODAY AND TONIGHT
WIDESPREAD PRECIPITATION WILL CONTINUE THROUGH TONIGHT. RAIN WILL
BE HEAVY AT TIMES...CREATING THE THREAT FOR ISOLATED FLASH
FLOODING. THE HIGHEST THREAT AREAS WILL BE SLOT
CANYONS...SLICKROCK AREAS...RECENT BURN SCARS AND SMALL STREAMS IN
STEEP TERRAIN. ISOLATED URBAN FLOODING WILL ALSO BE POSSIBLE.

SOME THUNDERSTORMS MAY BE SEVERE WITH LOCALLY STRONG WIND GUSTS
THROUGH THIS EVENING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

ISOLATED TO SCATTERED SHOWERS WILL BE POSSIBLE OVER THE ENTIRE
OUTLOOK AREA ON SUNDAY AND ACROSS THE NORTHERN PORTIONS ON
MONDAY. SOME SNOW IS POSSIBLE ABOVE 9000 FEET SUNDAY THROUGH
MONDAY.

FREEZING TEMPERATURES ARE FORECAST FOR SOME OF THE COLDER VALLEYS
BEGINNING MID WEEK.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

ROGOWSKI/VERZELLA

FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY/ (ALL LOWER CASE)

FOR INFORMATION ON POTENTIAL ROAD TRAVEL IMPACTS VISIT...
HTTP://WWW.UDOTTRAFFIC.UTAH.GOV/ROADWEATHERFORECAST.ASPX

In the hours before

Local storm report, Sep 27, 10:19 AM MDT, 4 hours 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1019 AM MDT SAT SEP 27 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1010 AM     FLASH FLOOD      IVINS                   37.17N 113.68W
09/27/2014                   WASHINGTON         UT   911 CALL CENTER

            HOMES FLOODED IN IVINS AROUND 600 S AND 400 W.

&&

BARJENBRUCH

Local storm report, Sep 27, 10:55 AM MDT, 3 hours 37 minutes before

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Local storm report, Sep 27, 12:00 PM MDT, 2 hours 32 minutes before

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Special weather statement, Sep 27, 12:30 PM MDT, 2 hours 2 minutes before

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Special weather statement, Sep 27, 2:17 PM MDT, 15 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 26, 6:31 PM MDT	Severe Thunderstorm Warning	SLC	Box Elder	44 min
Sep 26, 7:05 PM MDT	Special Weather Statement	SLC	Salt Lake	40 min
Sep 26, 7:08 PM MDT	Severe Thunderstorm Warning	SLC	Tooele	37 min
Sep 27, 12:29 AM MDT	Special Weather Statement	SLC	Tooele	76 min
Sep 27, 1:44 AM MDT	Special Weather Statement	SLC	Box Elder	76 min
Sep 27, 2:28 AM MDT	Severe Thunderstorm Warning	SLC	Box Elder	51 min
Sep 27, 8:27 AM MDT	Severe Thunderstorm Warning	SLC	Washington	33 min
Sep 27, 9:22 AM MDT	Flash Flood Warning	SLC	Emery	3 hr
Sep 27, 9:47 AM MDT	Flash Flood Warning	SLC	Kane, Washington	3 hr
Sep 27, 10:06 AM MDT	Flash Flood Warning	SLC	Washington	3 hr
Sep 27, 10:35 AM MDT	Areal Flood Warning	SLC	Iron, Kane, Washington	6 hr
Sep 27, 10:43 AM MDT	Severe Thunderstorm Warning	SLC	Iron, Kane, Washington	32 min
Sep 27, 11:48 AM MDT	Severe Thunderstorm Warning	SLC	Garfield, Kane	27 min
Sep 27, 12:30 PM MDT	Special Weather Statement	SLC	Piute	30 min
Sep 27, 2:17 PM MDT	Special Weather Statement	SLC	Carbon	13 min
Sep 27, 3:06 PM MDT	Special Weather Statement	SLC	Duchesne	24 min
Sep 27, 3:58 PM MDT	Flash Flood Warning	SLC	Carbon, Emery	4 hr
Sep 27, 4:52 PM MDT	Areal Flood Advisory	SLC	Salt Lake	3 hr

Nearby

Areal Flood Warnings in Utah, 2014 Every areal flood warning in 2014

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.