Alert archive / Utah / Special Weather Statements in 2018
Special Weather Statement, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this special weather statement at Oct 3, 2018, 2:18 PM MDT for Emery County, Utah. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Oct 3, 2018, 2:18 PM MDT (20:18 UTC)
- Expired
- Oct 3, 2018, 2:45 PM MDT
- In force
- 27 min
- Issued by
- NWS Salt Lake City, UT
County Emery County, UT
The radar
The Grand Junction radar (KGJX), 165 km from the middle of the area, began a volume at 20:20 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
Elko, NV (KLKN), launched 12:00Z, 8.3 hours before the alert went out and 406 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.
- Mixed-layer CAPE
- 2 J/kg
- Mixed-layer CIN
- -274 J/kg
- Mixed-layer LCL
- 1270 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Oct 3, 10:34 AM MDT, 3 hours 44 minutes earlier.
Area forecast discussion, Oct 3, 10:34 AM MDT, 3 hours 44 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.
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</html>Hazardous weather outlook, Oct 3, 6:04 AM MDT, 8 hours 14 minutes before
Hazardous Weather Outlook National Weather Service Salt Lake City UT 604 AM MDT Wed Oct 3 2018 UTZ001>016-019>021-517-518-WYZ021-041300- 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- 604 AM MDT Wed Oct 3 2018 This Hazardous Weather Outlook is for the western two thirds of Utah and southwest Wyoming. .DAY ONE...Today and Tonight Scattered showers and thunderstorms are expected today, then rain will become more widespread tonight. Locally heavy rain is expected with some of the stronger showers and thunderstorms. There remains a potential for flash flooding particularly in prone areas such as slot canyons, burn scars, normally dry washes, small streams in steep terrain, and urban areas with poor drainage. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Another storm system will push a cold front into the area late Thursday, bringing colder temperatures to the area along with the potential for accumulating snow across the northern mountains. Cool and wet weather will then continue for the weekend. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. For more information from NOAA/s National Weather Service visit... http://weather.gov/saltlakecity For information on potential road travel impacts visit... http://www.udottraffic.utah.gov/roadweatherforecast.aspx
In the hours before
Special weather statement, Oct 3, 2:18 PM MDT, 0 minutes before
Special Weather Statement
National Weather Service Salt Lake City UT
218 PM MDT WED OCT 3 2018
UTZ010-013-032045-
San Rafael Swell UT-Wasatch Plateau/Book Cliffs UT-
218 PM MDT WED OCT 3 2018
...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL EMERY COUNTY UNTIL
245 PM MDT...
At 217 PM MDT, National Weather Service Doppler radar indicated a
strong thunderstorm over Green River near I-70...moving east at 20
mph.
Half inch hail and winds in excess of 40 mph will be possible.
Locations impacted include...
Green River and Elgin.
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.
&&
LAT...LON 3895 11004 3899 11011 3897 11015 3893 11014
3890 11023 3906 11031 3912 11012 3900 11015
3900 11010 3899 11009 3899 11005 3895 11000
TIME...MOT...LOC 2017Z 254DEG 18KT 3900 11019
NCThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 2, 7:25 PM MDT | Special Weather Statement | SLC | Davis, Tooele | 65 min |
| Oct 2, 7:32 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder | 28 min |
| Oct 2, 8:26 PM MDT | Special Weather Statement | SLC | Cache, Davis, Salt Lake, Weber | 49 min |
| Oct 2, 9:17 PM MDT | Special Weather Statement | SLC | Morgan, Rich | 28 min |
| Oct 2, 9:23 PM MDT | Areal Flood Advisory | SLC | Salt Lake | 112 min |
| Oct 2, 9:42 PM MDT | Special Weather Statement | SLC | Salt Lake | 63 min |
| Oct 2, 9:56 PM MDT | Special Weather Statement | SLC | Summit | 64 min |
| Oct 2, 10:01 PM MDT | Areal Flood Advisory | SLC | Utah | 119 min |
| Oct 2, 10:15 PM MDT | Special Weather Statement | SLC | Utah, Wasatch | 60 min |
| Oct 3, 3:59 AM MDT | Flash Flood Watch | SLC | 26 hr |
Nearby
Special Weather Statements in Utah, 2018Every special weather statement in 2018
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.