Alert archive / Utah / Areal Flood Advisories in 2021

Areal Flood Advisory 2, NWS Salt Lake City, UT

May 17, 2021Washington County, Utah

NWS Salt Lake City, UT issued this areal flood advisory at May 17, 2021, 2:27 PM MDT for Washington County, Utah. It was in force for 93 min.

The area

The counties it named.

The facts

Issued: May 17, 2021, 2:27 PM MDT (20:27 UTC)
Expired: May 17, 2021, 4:00 PM MDT
In force: 93 min
Issued by: NWS Salt Lake City, UT
Area: Storm-based polygon

County Washington County, UT

The radar

The Cedar City radar (KICX), 66 km from the middle of the area, began a volume at 20:25 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 forecasters said that day

The local office's own words before this areal flood advisory 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 advisory went out at May 17, 9:33 AM MDT, 4 hours 54 minutes earlier.

Area forecast discussion, May 17, 9:33 AM MDT, 4 hours 54 minutes before

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Hazardous weather outlook, May 17, 5:27 AM MDT, 9 hours before

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</head>
<body>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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In the hours before

Special weather statement, May 17, 1:08 PM MDT, 1 hour 19 minutes before

Special Weather Statement
National Weather Service Salt Lake City UT
108 PM MDT Mon May 17 2021

UTZ127-128-172000-
South Central Utah UT-Bryce Canyon Country UT-
108 PM MDT Mon May 17 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN GARFIELD AND
NORTHWESTERN KANE COUNTIES UNTIL 200 PM MDT...

At 108 PM MDT, National Weather Service Doppler radar indicated a
strong thunderstorm over Bryce Canyon National Park, or 29 miles west
of Escalante...moving southwest at 5 mph.

Pea size hail and winds in excess of 40 mph will be possible.

Locations impacted include...
Bryce Canyon National Park, Tropic, Cannonville and Rubys Inn.

This includes Utah Route 12 between mile markers 14 and 24.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If threatening weather approaches, take shelter in a sturdy building.

&&

LAT...LON 3754 11227 3757 11224 3757 11223 3770 11215
      3770 11208 3767 11204 3753 11207 3753 11224
TIME...MOT...LOC 1908Z 028DEG 6KT 3766 11212

CRK

Special weather statement, May 17, 1:46 PM MDT, 41 minutes before

Special Weather Statement
National Weather Service Salt Lake City UT
146 PM MDT Mon May 17 2021

UTZ108-111-172030-
Wasatch Back UT-Wasatch Mountains South of I-80 UT-
146 PM MDT Mon May 17 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN WASATCH...EAST
CENTRAL SALT LAKE AND SOUTHWESTERN SUMMIT COUNTIES UNTIL 230 PM
MDT...

At 145 PM MDT, National Weather Service Doppler radar indicated a
strong thunderstorm near Park City...moving west at 10 mph.

Pea size hail and winds in excess of 40 mph will be possible.

Hail may cover area roads.  Use caution in areas with hail!

Locations impacted include...
Park City, Kamas, Francis, South Snyderville Basin, Big Cottonwood
Canyon, Samak, Little Cottonwood Canyon, Mill Creek Canyon, Alta,
Brighton, Snowbird, Snyderville, Marion, Hailstone, Jordanelle
Reservoir and Woodland.

This includes the following highways...
 US Route 40 between mile markers 3 and 11.
 Utah Route 35 between mile markers 0 and 2.
 Mirror Lake Highway between mile markers 0 and 1.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If threatening weather approaches, take shelter in a sturdy building.

&&

LAT...LON 4059 11124 4056 11169 4072 11170 4072 11167
      4070 11167 4068 11161 4071 11158 4070 11127
TIME...MOT...LOC 1945Z 086DEG 9KT 4066 11155

CRK

Local storm report, May 17, 1:52 PM MDT, 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
152 PM MDT MON MAY 17 2021

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

0151 PM     HAIL             PARK CITY               40.66N 111.49W
05/17/2021  M0.75 INCH       SUMMIT             UT   PUBLIC

&&

CRK

Special weather statement, May 17, 1:54 PM MDT, 33 minutes before

Special Weather Statement
National Weather Service Salt Lake City UT
154 PM MDT Mon May 17 2021

UTZ108-111-112-172045-
Wasatch Back UT-Western Uinta Mountains UT-
Wasatch Mountains South of I-80 UT-
154 PM MDT Mon May 17 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN WASATCH AND
SOUTHWESTERN SUMMIT COUNTIES UNTIL 245 PM MDT...

At 154 PM MDT, National Weather Service Doppler radar indicated a
strong thunderstorm over Francis, or 9 miles northeast of Heber
City...moving west at 10 mph.

Penny to nickel size hail and winds in excess of 40 mph will be
possible.

Locations impacted include...
Park City, Heber City, Heber, Kamas, Francis, Daniel, Wasatch
Mountain State Park, Samak, Timber Lakes, Midway, Charleston, Deer
Creek State Park, Woodland, Hailstone and Jordanelle Reservoir.

This includes the following highways...
 US Route 40 between mile markers 8 and 20.
 Utah Route 35 between mile markers 0 and 7.
 Mirror Lake Highway between mile markers 2 and 6.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If threatening weather approaches, take shelter in a sturdy building.

Heavy rainfall is also occurring with this storm, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm is capable of producing a significant amount of hail. Hail
may accumulate on area roads resulting in dangerous travel
conditions.

&&

LAT...LON 4052 11117 4043 11152 4063 11152 4064 11118
TIME...MOT...LOC 1954Z 086DEG 9KT 4059 11126

CRK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 7:30 PM MDT	Special Weather Statement	SLC	Salt Lake	60 min
May 17, 12:12 PM MDT	Fire Weather Watch	SLC	Beaver, Garfield, Iron, Kane, San Juan, Washington and 1 more	27 hr
May 17, 12:12 PM MDT	Red Flag Warning	SLC	Beaver, Carbon, Emery, Garfield, Iron, Juab and 9 more	6 days
May 17, 1:08 PM MDT	Special Weather Statement	SLC	Kane	52 min
May 17, 1:46 PM MDT	Special Weather Statement	SLC	Salt Lake	44 min
May 17, 1:54 PM MDT	Special Weather Statement	SLC	Wasatch	51 min
May 17, 4:43 PM MDT	Special Weather Statement	SLC	Weber	32 min

Nearby

Areal Flood Advisories in Utah, 2021 Every areal flood advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.