Alert archive / Utah / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 34, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Jun 15, 2010, 5:39 PM MDT for Box Elder County, Utah. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 15, 2010, 5:39 PM MDT (23:39 UTC)
- Expired
- Jun 15, 2010, 6:15 PM MDT
- In force
- 36 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
County Box Elder County, UT
The radar
The Salt Lake City radar (KMTX), 60 km from the middle of the area, began a volume at 23:38 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, 11.7 hours before the alert went out and 118 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2783 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 196 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jun 15, 4:24 PM MDT, 1 hour 15 minutes earlier.
Area forecast discussion, Jun 15, 4:24 PM MDT, 1 hour 15 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>Hazardous weather outlook, Jun 15, 4:50 AM MDT, 12 hours 49 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SALT LAKE CITY UT 450 AM MDT TUE JUN 15 2010 UTZ001>016-019>021-517-518-WYZ021-161200- 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- 450 AM MDT TUE JUN 15 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF UTAH AND SOUTHWEST WYOMING. .DAY ONE...TODAY AND TONIGHT WARMER AND DRIER CONDITIONS WILL DEVELOP OVER THE AREA TODAY. A FEW THUNDERSTORMS ARE POSSIBLE TODAY ACROSS PORTIONS OF NORTHERN AND CENTRAL UTAH. THESE STORMS MAY PRODUCE LOCALLY STRONG OUTFLOW WINDS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE NEXT STORM SYSTEM WILL PUSH A COLD FRONT THROUGH UTAH WEDNESDAY AFTERNOON AND EVENING...BRINGING A BRIEF PERIOD OF COOLER TEMPERATURES TO THE AREA. STRONG NORTHWEST WINDS ARE EXPECTED BEHIND THE FRONT WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING ACROSS NORTHERN AND PORTIONS OF CENTRAL UTAH AND SOUTHWEST WYOMING. SOUTH OF THE FRONT...STRONG SOUTH WINDS WILL DEVELOP FOR WEDNESDAY AFTERNOON AND EVENING. THESE WINDS WILL LIKELY AFFECT WIND-SENSITIVE OPERATIONS. ACROSS FAR SOUTHWEST AND SOUTH-CENTRAL UTAH...THE WINDS WILL COMBINE WITH LOW HUMIDITIES AND CRITICALLY DRY FUELS TO PRODUCE EXTREME FIRE WEATHER CONDITIONS. IN ADDITION...SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS NORTHERN UTAH ON WEDNESDAY. THESE THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE HAIL AND STRONG MICROBURST WINDS. THE STORM SYSTEM WILL EXIT THE AREA THURSDAY WITH A RETURN TO WARMER AND DRIER CONDITIONS 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 (ALL LOWER CASE)
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 3:28 AM MDT | Red Flag Warning | SLC | 45 hr | |
| Jun 15, 3:54 AM MDT | High Wind Watch | SLC | 11 hr | |
| Jun 15, 3:16 PM MDT | High Wind Watch | SLC | 13 hr | |
| Jun 15, 3:16 PM MDT | High Wind Warning | SLC | 33 hr |
Nearby
Severe Thunderstorm Warnings in Utah, 2010Every severe thunderstorm warning in 2010
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.