Alert archive / Arkansas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 207, NWS Little Rock, AR

June 14, 2018Independence County, Izard County, Sharp County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Jun 14, 2018, 6:36 PM CDT for Independence County, Izard County, Sharp County, Arkansas. It was in force for 39 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 14, 2018, 6:36 PM CDT (23:36 UTC)
Expired
Jun 14, 2018, 7:15 PM CDT
In force
39 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Independence County, AR, Izard County, AR, Sharp County, AR

The radar

The Little Rock radar (KLZK), 141 km from the middle of the area, began a volume at 23:39 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

Springfield, MO (KSGF), launched 12:00Z, 11.6 hours before the alert went out and 216 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, Springfield, MO at 12:00Z on 2018-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2648 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2018-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 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
2648 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
1120 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
48 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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Little Rock, AR wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 14, 6:27 PM CDT, 9 minutes earlier.

Area forecast discussion, Jun 14, 6:27 PM CDT, 9 minutes before
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Hazardous weather outlook, Jun 14, 4:57 AM CDT, 13 hours 39 minutes before
Hazardous Weather Outlook
National Weather Service Little Rock AR
457 AM CDT Thu Jun 14 2018

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-151000-
Boone-Marion-Baxter-Fulton-Sharp-Newton-Searcy-Stone-Izard-
Independence-Johnson-Pope-Van Buren-Cleburne-Jackson-Logan-Conway-
Faulkner-White-Woodruff-Scott-Yell-Perry-Polk-Montgomery-Garland-
Saline-Pulaski-Lonoke-Prairie-Monroe-Pike-Clark-Hot Spring-Grant-
Jefferson-Arkansas-Dallas-Cleveland-Lincoln-Desha-Ouachita-
Calhoun-Bradley-Drew-
457 AM CDT Thu Jun 14 2018

This Hazardous Weather Outlook is for a Large Part of Arkansas.

.DAY ONE...Today and Tonight

Scattered showers and thunderstorms will continue over parts of
north Arkansas this morning. Otherwise, expect isolated showers
and thunderstorms to form this afternoon statewide. A few strong
storms will again be possible, capable of producing gusty winds,
hail and locally heavy downpours.

.DAYS TWO THROUGH SEVEN...Friday Through Wednesday

Isolated to scattered afternoon and early evening thunderstorms
will remain possible each day. The overall threat for organized
or widespread severe weather is expected to remain low at this
time. However, an isolated strong to severe thunderstorm may be
seen each day.

Heat index values each afternoon will warm into the mid 90s to
near or just over 100 through much of the period.

.Spotter Information Statement...

Spotter activation will not be needed.

&&

Visit NWS Little Rock on the web. Go to http://weather.gov/lzk.

44/Cooper

In the hours before

Special weather statement, Jun 14, 4:32 PM CDT, 2 hours 4 minutes before
Special Weather Statement
National Weather Service Little Rock AR
432 PM CDT THU JUN 14 2018

ARZ006-007-142230-
Sharp AR-Fulton AR-
432 PM CDT THU JUN 14 2018

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN FULTON AND NORTHERN SHARP
COUNTIES UNTIL 530 PM CDT...

At 432 PM CDT, Doppler radar was tracking a strong thunderstorm over
Thayer, moving south at 25 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Cherokee Village...               Ash Flat...
Highland in Sharp County...       Mammoth Spring...
Hardy...                          Mammoth Spring State Park...
Williford...                      Fryatt...
Saddler Falls...                  Kittle...
Saddle...                         Wirth...
Ozark Acres...

LAT...LON 3627 9127 3617 9163 3650 9168 3650 9141
TIME...MOT...LOC 2132Z 340DEG 20KT 3654 9157

57
Special weather statement, Jun 14, 4:47 PM CDT, 1 hour 49 minutes before
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Local storm report, Jun 14, 5:45 PM CDT, 51 minutes before
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Special weather statement, Jun 14, 5:45 PM CDT, 51 minutes before
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Local storm report, Jun 14, 6:28 PM CDT, 8 minutes before
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Special weather statement, Jun 14, 6:32 PM CDT, 4 minutes before
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The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 14, 3:55 AM CDTSpecial Weather StatementLZKMarion, Searcy, Van Buren50 min
Jun 14, 4:44 AM CDTSpecial Weather StatementLZKMarion46 min
Jun 14, 3:37 PM CDTSpecial Weather StatementLZKCleveland38 min
Jun 14, 4:32 PM CDTSpecial Weather StatementLZKSharp58 min
Jun 14, 4:36 PM CDTSevere Thunderstorm WarningLZKFulton, Sharp24 min
Jun 14, 4:47 PM CDTSpecial Weather StatementLZKCleburne43 min
Jun 14, 4:54 PM CDTSevere Thunderstorm WarningLZKFulton, Sharp51 min
Jun 14, 5:03 PM CDTTornado WarningLZKFulton27 min
Jun 14, 5:45 PM CDTSpecial Weather StatementLZKSharp45 min
Jun 14, 5:49 PM CDTSevere Thunderstorm WarningLZKFulton, Izard, Sharp56 min
Jun 14, 6:32 PM CDTSpecial Weather StatementLZKVan Buren43 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2018Every severe thunderstorm warning 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.