Alert archive / Utah / Special Weather Statements in 2019

Special Weather Statement, NWS Salt Lake City, UT

June 1, 2019Juab County, Utah

NWS Salt Lake City, UT issued this special weather statement at Jun 1, 2019, 6:08 PM MDT for Juab County, Utah. It was in force for 52 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
Jun 1, 2019, 6:08 PM MDT (00:08 UTC)
Expired
Jun 1, 2019, 7:00 PM MDT
In force
52 min
Issued by
NWS Salt Lake City, UT

County Juab County, UT

The radar

The Salt Lake City radar (KMTX), 200 km from the middle of the area, began a volume at 00:09 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 00:00Z, 0.1 hours before the alert went out and 158 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-pSkew-T log-p diagram, Elko, NV at 00:00Z on 2019-06-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 56 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Elko, NV at 00:00Z on 2019-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
56 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
2552 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
4 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Jun 1, 3:30 PM MDT, 2 hours 38 minutes earlier.

Area forecast discussion, Jun 1, 3:30 PM MDT, 2 hours 38 minutes before
Area Forecast Discussion
National Weather Service Salt Lake City UT
330 PM MDT Sat Jun 1 2019

.SYNOPSIS...A slow moving upper level system will continue to
gradually shift eastward through early next week. This will bring
a warming trend to Utah.

&&

.SHORT TERM (Through 00Z Wednesday)...An upper level low continues
to gradually cut off from the mean flow over central California
this afternoon. Ahead of this low, relatively strong southwesterly
flow continues in the mid-levels. With temperatures reaching to
the mid-70s in most valley locations across northern and central
Utah, somewhere around 500 J/kg of MLCAPE has developed. This
combined with deep layer shear around 30-40kts has allowed a few
isolated thunderstorms to develop. One storm in particular, near
Strawberry Reservoir, has managed to maintain rotation for at
least an hour. Outside of a storm or two capitalizing on terrain
enhancement of localized vorticity pools, expect most storms to
remain more pulse-based in nature.

The only exception may be storms closer to a wave shifting north
across eastern Nevada. More forcing for organized convection
exists in this area...but the threat area is largely confined
outside of the CWA. A few storms may sneak into far western Utah
through this evening.

The upper level low will continue to gradually fill Sunday. Expect
another round of mainly terrain based convection across the state.
By Monday...the upper level low is expected to continue to weaken
and begin gradually shifting eastward across the Desert Southwest.
Another round of convection, mainly tied to the terrain can be
expected Monday afternoon and evening as well as Tuesday afternoon
and evening.

Temperatures will be on the rise...remaining near normal through
the short term forecast period.

.LONG TERM (After 00Z Wednesday)...The filling trough from earlier
in the week will continue a downstream translation Tuesday night,
this in advance of a more energetic trough that will likely impact
the area leading into next weekend. Short wave ridging will build
between to two features beginning Wednesday, with a strengthening
southwest flow aloft replacing that for the late week period.
Sensibly, the mid/late week period will be trending warmer (some 5-7
degrees above climo by Thu), and dry conditions will prevail (though
still can't rule out largely isolated terrain based convection
diurnally, focused north).

Model inconsistencies continue to exist regarding the northern
branch trough evolution as it amplifies south into the northern
Great Basin Friday on. Regardless of this, strengthening pre-frontal
winds are expected to develop across either much, or all of the area
Friday. That said, strength and significance are dependent on
frontal timing and net trough amplification. The resultant cool down
in the post frontal environment, the same. Leaning towards a
somewhat more amplified solution attm, primarily due to the
advertised energy of the upstream jet, and bulk of ensemble
solutions pointing towards those signals.

&&

.AVIATION...Thunderstorm buildups are anticipated to increase near
the southern/eastern gates late this afternoon prior to lifting
north toward the terminal. A 30% chance exists that thunderstorms
will directly impact the terminal during the early evening hours,
while a 50% chance exists that gusty erratic winds will switch the
prevailing northwest winds in place. VFR conditions are expected to
be maintained.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...None.
WY...None.
&&

Kruse/Merrill/Cheng

For more information from NOAA's National Weather Service visit...
http://weather.gov/saltlakecity

For frequently asked questions about the Area Forecast Discussion
visit...
http://weather.gov/saltlakecity/general/afd_faqs.php

In the hours before

Special weather statement, Jun 1, 4:57 PM MDT, 1 hour 11 minutes before
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Special weather statement, Jun 1, 5:09 PM MDT, 59 minutes before
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Special weather statement, Jun 1, 5:18 PM MDT, 50 minutes before
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Special weather statement, Jun 1, 5:23 PM MDT, 45 minutes before
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Special weather statement, Jun 1, 5:53 PM MDT, 15 minutes before
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Special weather statement, Jun 1, 6:08 PM MDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 6:10 PM MDTSpecial Weather StatementSLCJuab50 min
Jun 1, 6:12 PM MDTSpecial Weather StatementSLCUtah48 min
Jun 1, 6:57 PM MDTSpecial Weather StatementSLCTooele33 min
Jun 1, 7:24 PM MDTSpecial Weather StatementSLCJuab36 min
Jun 1, 7:42 PM MDTSpecial Weather StatementSLCTooele33 min
Jun 1, 7:54 PM MDTSpecial Weather StatementSLCTooele51 min
Jun 1, 8:13 PM MDTSevere Thunderstorm WarningSLCTooele32 min
Jun 1, 8:20 PM MDTSpecial Weather StatementSLCTooele25 min
Jun 1, 9:17 PM MDTSevere Thunderstorm WarningSLCBox Elder, Davis, Tooele28 min
Jun 1, 9:21 PM MDTSpecial Weather StatementSLCBox Elder39 min
Jun 2, 1:10 PM MDTSpecial Weather StatementSLCCache35 min
Jun 2, 1:20 PM MDTSevere Thunderstorm WarningSLCCache, Rich25 min
Jun 2, 2:16 PM MDTSpecial Weather StatementSLCMorgan44 min
Jun 2, 2:23 PM MDTSpecial Weather StatementSLCRich52 min
Jun 2, 2:57 PM MDTSpecial Weather StatementSLCMorgan48 min
Jun 2, 3:14 PM MDTSpecial Weather StatementSLCRich46 min
Jun 2, 3:30 PM MDTSpecial Weather StatementSLCMillard30 min
Jun 2, 3:55 PM MDTSpecial Weather StatementSLCCache35 min
Jun 2, 5:16 PM MDTSpecial Weather StatementSLCUtah29 min
Jun 2, 5:43 PM MDTSpecial Weather StatementSLCUtah32 min
Jun 2, 2:42 PM MDTSpecial Weather StatementSLCUinta48 min

Nearby

Special Weather Statements in Utah, 2019Every special weather statement in 2019

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.