Alert archive / Arkansas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 263, NWS Little Rock, AR

June 30, 2017Polk County, Scott County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Jun 30, 2017, 9:43 PM CDT for Polk County, Scott County, Arkansas. It was in force for 47 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 30, 2017, 9:43 PM CDT (02:43 UTC)
Expired: Jun 30, 2017, 10:30 PM CDT
In force: 47 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Polk County, AR, Scott County, AR

The radar

The Western Arkansas radar (KSRX), 71 km from the middle of the area, began a volume at 02:43 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 00:00Z, 2.7 hours before the alert went out and 250 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: 785 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1085 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 80 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.4

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 30, 7:01 PM CDT, 2 hours 42 minutes earlier.

Area forecast discussion, Jun 30, 7:01 PM CDT, 2 hours 42 minutes before

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Hazardous weather outlook, Jun 30, 2:00 PM CDT, 7 hours 43 minutes before

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In the hours before

Special weather statement, Jun 30, 7:31 PM CDT, 2 hours 12 minutes before

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Special weather statement, Jun 30, 8:29 PM CDT, 1 hour 14 minutes before

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Special weather statement, Jun 30, 8:35 PM CDT, 1 hour 8 minutes before

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Special weather statement, Jun 30, 9:22 PM CDT, 21 minutes before

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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
Jun 30, 7:31 PM CDT	Special Weather Statement	LZK	Newton	44 min
Jun 30, 8:29 PM CDT	Special Weather Statement	LZK	Searcy	46 min
Jun 30, 8:35 PM CDT	Special Weather Statement	LZK	Pope	40 min
Jun 30, 9:22 PM CDT	Special Weather Statement	LZK	Logan	53 min
Jun 30, 9:47 PM CDT	Special Weather Statement	LZK	Johnson	28 min
Jun 30, 10:20 PM CDT	Special Weather Statement	LZK	Logan	55 min
Jun 30, 10:22 PM CDT	Special Weather Statement	LZK	Montgomery, Polk	23 min
Jun 30, 10:58 PM CDT	Special Weather Statement	LZK	Garland, Montgomery, Yell	62 min
Jun 30, 11:10 PM CDT	Severe Thunderstorm Warning	LZK	Perry, Yell	35 min
Jun 30, 11:33 PM CDT	Severe Thunderstorm Warning	LZK	Conway, Faulkner, Perry	42 min
Jun 30, 11:36 PM CDT	Special Weather Statement	LZK	Garland, Hot Spring, Saline	54 min
Jun 30, 11:52 PM CDT	Special Weather Statement	LZK	Faulkner, Pulaski	53 min
Jul 1, 12:39 AM CDT	Special Weather Statement	LZK	Jefferson, Lonoke, Prairie, White	36 min
Jul 1, 1:46 PM CDT	Special Weather Statement	LZK	Stone	44 min
Jul 1, 2:36 PM CDT	Special Weather Statement	LZK	Sharp	24 min
Jul 1, 3:57 PM CDT	Special Weather Statement	LZK	Van Buren	33 min
Jul 1, 4:21 PM CDT	Special Weather Statement	LZK	Ouachita	54 min
Jul 1, 4:47 PM CDT	Special Weather Statement	LZK	Bradley, Calhoun, Clark, Dallas, Hot Spring	58 min
Jul 1, 5:07 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas, Grant, Hot Spring	38 min
Jul 1, 5:19 PM CDT	Severe Thunderstorm Warning	LZK	Bradley	41 min
Jul 1, 5:28 PM CDT	Special Weather Statement	LZK	Bradley, Cleveland, Grant	62 min
Jul 1, 5:50 PM CDT	Severe Thunderstorm Warning	LZK	Grant, Hot Spring, Saline	25 min
Jul 1, 6:04 PM CDT	Special Weather Statement	LZK	Drew, Jefferson, Lincoln	56 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.