Alert archive / Utah / Flash Flood Warnings in 2026

Flash Flood Warning 131, NWS Salt Lake City, UT

September 16, 2026Kane County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Sep 16, 2026, 2:39 PM MDT for Kane 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 counties it named.

The facts

Issued: Sep 16, 2026, 2:39 PM MDT (20:39 UTC)
Expired: Sep 16, 2026, 5:45 PM MDT
In force: 3 hr
Issued by: NWS Salt Lake City, UT
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Kane County, UT

The radar

The Cedar City radar (KICX), 92 km from the middle of the area, began a volume at 20:41 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

Las Vegas, NV (KVEF), launched 12:00Z, 8.7 hours before the alert went out and 340 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2450 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 157 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash 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 flash flood warning went out at Sep 16, 2:31 PM MDT, 8 minutes earlier.

Area forecast discussion, Sep 16, 2:31 PM MDT, 8 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

In the hours before

Local storm report, Sep 16, 10:03 AM MDT, 4 hours 36 minutes before

Preliminary Local Storm Report...Corrected
National Weather Service Salt Lake City UT
1003 AM MDT Wed Sep 16 2026

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

0140 AM     Tstm Wnd Gst     10 SSW Dugway           40.11N 112.81W
09/16/2026  M58 MPH          Tooele             UT   Mesonet

            Mesonet station DPG13 Durand Road.

0155 AM     Tstm Wnd Gst     2 SE Dugway             40.23N 112.73W
09/16/2026  M60 MPH          Tooele             UT   Mesonet

            Mesonet station DPG07 English Village.

0215 AM     Tstm Wnd Gst     3 W Stockton            40.46N 112.41W
09/16/2026  M66 MPH          Tooele             UT   Mesonet

            Mesonet station SMT South Mountain.

0230 AM     Tstm Wnd Gst     2 WNW Tooele            40.55N 112.34W
09/16/2026  M59 MPH          Tooele             UT   Mesonet

            Mesonet station UT112 SR-112 at MP 6 Utah
            Avenue.

0240 AM     Tstm Wnd Gst     2 ENE Provo Canyon      40.34N 111.60W
09/16/2026  M66 MPH          Utah               UT   Mesonet

            Mesonet station PC034 Provo Canyon.

0430 AM     Tstm Wnd Gst     3 S Faust               40.13N 112.38W
09/16/2026  M67 MPH          Tooele             UT   Mesonet

            Mesonet station VRH Vernon Hill.

&&

Special weather statement, Sep 16, 11:04 AM MDT, 3 hours 35 minutes before

Special Weather Statement
National Weather Service Salt Lake City UT
1104 AM MDT Wed Sep 16 2026

UTZ128-131-161745-
South Central Utah UT-Glen Canyon Recreation Area/Lake Powell UT-
1104 AM MDT Wed Sep 16 2026

...A strong thunderstorm will impact portions of southwestern San
Juan and southeastern Kane Counties through 1145 AM MDT
...

At 1103 AM MDT, Doppler radar was tracking a strong thunderstorm near
Lake Powell, or 56 miles southeast of Escalante, moving northeast at
20 mph.

HAZARD...Wind gusts of 50 to 55 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Lake Powell from east to Wahweap to Dangling Rope Marina.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 3700 11130 3739 11114 3727 11083 3700 11104
TIME...MOT...LOC 1703Z 204DEG 19KT 3702 11118

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...55 MPH

CRK

Special weather statement, Sep 16, 12:08 PM MDT, 2 hours 31 minutes before

Special Weather Statement
National Weather Service Salt Lake City UT
1208 PM MDT Wed Sep 16 2026

UTZ128-131-161900-
South Central Utah UT-Glen Canyon Recreation Area/Lake Powell UT-
1208 PM MDT Wed Sep 16 2026

...A strong thunderstorm will impact portions of south central San
Juan and southeastern Kane Counties through 100 PM MDT
...

At 1208 PM MDT, Doppler radar was tracking a strong thunderstorm 10
miles east of Lake Powell, or 53 miles southeast of Escalante, moving
northeast at 20 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Lake Powell and Dangling Rope Marina.

This storm will be capable of producing strong gusty winds on Lake
Powell. This will lead to a sudden increase in waves and very choppy
waters which will result in hazardous boating conditions. Boaters are
urged to seek safe harbor if possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 3700 11128 3746 11105 3735 11074 3700 11102
TIME...MOT...LOC 1808Z 204DEG 18KT 3712 11107

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

CRK

Special weather statement, Sep 16, 1:40 PM MDT, 59 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Sep 16, 2:32 PM MDT, 7 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 15, 11:41 PM MDT	Special Weather Statement	SLC	Juab	49 min
Sep 16, 2:10 AM MDT	Special Weather Statement	SLC	Utah	50 min
Sep 16, 4:17 AM MDT	Special Weather Statement	SLC	Carbon	43 min
Sep 16, 7:12 AM MDT	Severe Thunderstorm Warning	SLC	Garfield, Wayne	48 min
Sep 16, 7:21 AM MDT	Special Weather Statement	SLC	Wasatch	39 min
Sep 16, 7:29 AM MDT	Flash Flood Warning Considerable damage threat	SLC	Garfield	3 hr
Sep 16, 7:38 AM MDT	Special Weather Statement	SLC	Garfield	37 min
Sep 16, 10:11 AM MDT	Flash Flood Warning Considerable damage threat	SLC	Garfield, Kane	6 hr
Sep 16, 11:04 AM MDT	Special Weather Statement	SLC		41 min
Sep 16, 12:01 PM MDT	Flash Flood Warning Considerable damage threat	SLC	San Juan	3 hr
Sep 16, 12:08 PM MDT	Special Weather Statement	SLC		52 min
Sep 16, 12:34 PM MDT	Flash Flood Warning Considerable damage threat	SLC	San Juan	2 hr
Sep 16, 1:40 PM MDT	Special Weather Statement	SLC		50 min
Sep 16, 1:48 PM MDT	Flash Flood Warning Considerable damage threat	SLC	Emery	3 hr
Sep 16, 2:29 PM MDT	Severe Thunderstorm Warning	SLC	Carbon, Emery	46 min
Sep 16, 2:32 PM MDT	Special Weather Statement	SLC	Cache	43 min
Sep 16, 2:36 PM MDT	Areal Flood Warning	SLC	Carbon, Emery	3 hr
Sep 16, 2:45 PM MDT	Special Weather Statement	SLC	Garfield	45 min
Sep 16, 2:49 PM MDT	Special Weather Statement	SLC	Carbon	41 min
Sep 16, 3:03 PM MDT	Severe Thunderstorm Warning	SLC	Garfield, Kane	42 min
Sep 16, 3:04 PM MDT	Special Weather Statement	SLC	Rich	41 min
Sep 16, 3:09 PM MDT	Special Weather Statement	SLC	Carbon	51 min
Sep 16, 3:15 PM MDT	Flash Flood Warning Considerable damage threat	SLC	Wayne	3 hr
Sep 16, 3:28 PM MDT	Flash Flood Warning Considerable damage threat	SLC	Kane	2 hr
Sep 16, 3:38 PM MDT	Flash Flood Warning Considerable damage threat	SLC	Kane	4 hr
Sep 16, 3:52 PM MDT	Severe Thunderstorm Warning	SLC	Carbon, Emery	38 min
Sep 16, 4:02 PM MDT	Special Weather Statement	SLC	Wasatch	43 min
Sep 16, 4:27 PM MDT	Special Weather Statement	SLC	Carbon	48 min
Sep 16, 4:43 PM MDT	Special Weather Statement	SLC		32 min

Nearby

Flash Flood Warnings in Utah, 2026 Every flash flood warning in 2026

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.