Alert archive / Arkansas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 279, NWS Little Rock, AR

July 23, 2017Pope County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Jul 23, 2017, 4:37 PM CDT for Pope County, Arkansas. It was in force for 23 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: Jul 23, 2017, 4:37 PM CDT (21:37 UTC)
Expired: Jul 23, 2017, 5:00 PM CDT
In force: 23 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Pope County, AR

The radar

The Little Rock radar (KLZK), 98 km from the middle of the area, began a volume at 21:38 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

Springfield, MO (KSGF), launched 12:00Z, 9.6 hours before the alert went out and 175 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: 39 J/kg
Mixed-layer CIN: -410 J/kg
Mixed-layer LCL: 1476 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -184 m²/s²
0-3 km storm-relative helicity: -167 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 Jul 23, 3:07 PM CDT, 1 hour 30 minutes earlier.

Area forecast discussion, Jul 23, 3:07 PM CDT, 1 hour 30 minutes before

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Hazardous weather outlook, Jul 23, 5:00 AM CDT, 11 hours 37 minutes before

Hazardous Weather Outlook
National Weather Service Little Rock AR
500 AM CDT Sun Jul 23 2017

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-241000-
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-
500 AM CDT Sun Jul 23 2017

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

.DAY ONE...Today and Tonight

A heat advisory continues for much of Arkansas through this evening
as the combination of high temperatures and humid conditions will
produce heat indices between 105 and 110 degrees. Please exercise
caution to minimize the affects of the heat and humidity and reduce
the possibility of heat related illness.

There is also a Marginal Risk of severe thunderstorms today and
tonight. Scattered thunderstorms will develop this afternoon and a
few of them could become severe with damaging winds and large hail
the main threats. The storms should be slow moving, so heavy
rainfall can be expected in a short period of time with some of
these storms.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

After slightly cooler conditions on Monday courtesy of clouds and
precipitation chances, very warm and humid conditions will return to
the area. High temperatures are expected to climb well into the 90s
once again for Tuesday through Thursday with heat advisories
possible once again.

Rain chances do increase towards the end of the week with cooler
temperatures expected as a frontal system tries to move through the
area. While showers and thunderstorms will be possible, the overall
threat of hazardous weather is low.

.Spotter Information Statement...

Spotter activation is not anticipated at this time.

&&

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

51/56

In the hours before

Special weather statement, Jul 23, 2:48 PM CDT, 1 hour 49 minutes before

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Special weather statement, Jul 23, 4:04 PM CDT, 33 minutes before

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Special weather statement, Jul 23, 4:10 PM CDT, 27 minutes before

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      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
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        Please try again in a few minutes.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 7:14 PM CDT	Special Weather Statement	LZK	Drew	31 min
Jul 23, 3:49 AM CDT	Heat Advisory	LZK	Bradley, Calhoun, Clark, Cleveland, Dallas, Desha and 4 more	16 hr
Jul 23, 2:48 PM CDT	Special Weather Statement	LZK	Johnson	42 min
Jul 23, 4:04 PM CDT	Special Weather Statement	LZK	Saline	26 min
Jul 23, 4:10 PM CDT	Special Weather Statement	LZK	Johnson	35 min
Jul 23, 4:43 PM CDT	Special Weather Statement	LZK	Faulkner	47 min
Jul 23, 4:48 PM CDT	Special Weather Statement	LZK	Scott	27 min
Jul 23, 4:50 PM CDT	Special Weather Statement	LZK	Yell	25 min
Jul 23, 4:53 PM CDT	Special Weather Statement	LZK	Scott	37 min
Jul 23, 5:03 PM CDT	Special Weather Statement	LZK	Faulkner	27 min
Jul 23, 5:09 PM CDT	Special Weather Statement	LZK	Scott	36 min
Jul 23, 5:19 PM CDT	Special Weather Statement	LZK	Saline	26 min
Jul 23, 5:28 PM CDT	Special Weather Statement	LZK	Yell	32 min
Jul 23, 5:31 PM CDT	Special Weather Statement	LZK	Faulkner	44 min
Jul 23, 5:32 PM CDT	Special Weather Statement	LZK	Faulkner	28 min
Jul 23, 6:30 PM CDT	Special Weather Statement	LZK	Hot Spring	30 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2017 Every severe thunderstorm warning in 2017

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.