Alert archive / Arkansas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 49, NWS Little Rock, AR

February 18, 20135 counties in Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Feb 18, 2013, 4:43 PM CST for 5 counties in 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: Feb 18, 2013, 4:43 PM CST (22:43 UTC)
Expired: Feb 18, 2013, 5:30 PM CST
In force: 47 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

Counties Clark County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Saline County, AR

The radar

The Little Rock radar (KLZK), 76 km from the middle of the area, began a volume at 22:45 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Feb 18, 2:19 PM CST	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 10.7 hours before the alert went out and 226 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 668 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 510 m²/s²
0-3 km storm-relative helicity: 670 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 Feb 18, 3:36 PM CST, 1 hour 7 minutes earlier.

Area forecast discussion, Feb 18, 3:36 PM CST, 1 hour 7 minutes before

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Hazardous weather outlook, Feb 18, 2:55 PM CST, 1 hour 48 minutes before

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In the hours before

Local storm report, Feb 18, 4:23 PM CST, 20 minutes before

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Special weather statement, Feb 18, 4:24 PM CST, 19 minutes before

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Local storm report, Feb 18, 4:27 PM CST, 16 minutes before

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Special weather statement, Feb 18, 4:33 PM CST, 10 minutes before

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Local storm report, Feb 18, 4:38 PM CST, 5 minutes before

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Local storm report, Feb 18, 4:43 PM CST, 0 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
Feb 18, 2:07 PM CST	Special Weather Statement	LZK	Polk	28 min
Feb 18, 2:14 PM CST	Severe Thunderstorm Warning	LZK	Polk	46 min
Feb 18, 2:42 PM CST	Severe Thunderstorm Warning	LZK	Montgomery, Polk	33 min
Feb 18, 2:49 PM CST	Special Weather Statement	LZK	Clark	46 min
Feb 18, 2:56 PM CST	Severe Thunderstorm Warning	LZK	Johnson	49 min
Feb 18, 3:05 PM CST	Special Weather Statement	LZK	Boone	45 min
Feb 18, 3:13 PM CST	Severe Thunderstorm Warning	LZK	Garland, Montgomery	32 min
Feb 18, 3:19 PM CST	Special Weather Statement	LZK	Scott	31 min
Feb 18, 3:27 PM CST	Special Weather Statement	LZK	Logan	28 min
Feb 18, 3:29 PM CST	Special Weather Statement	LZK	Hot Spring	46 min
Feb 18, 3:30 PM CST	Special Weather Statement	LZK	Cleveland	45 min
Feb 18, 3:34 PM CST	Severe Thunderstorm Warning	LZK	Johnson, Logan, Newton, Pope, Searcy, Van Buren and 1 more	26 min
Feb 18, 3:39 PM CST	Severe Thunderstorm Warning	LZK	Montgomery, Polk, Scott, Yell	36 min
Feb 18, 3:44 PM CST	Severe Thunderstorm Warning	LZK	Montgomery, Pike, Polk	31 min
Feb 18, 3:52 PM CST	Special Weather Statement	LZK	Garland	43 min
Feb 18, 3:59 PM CST	Severe Thunderstorm Warning	LZK	Conway, Logan, Pope, Van Buren, Yell	31 min
Feb 18, 4:05 PM CST	Severe Thunderstorm Warning	LZK	Clark, Garland, Hot Spring, Montgomery, Pike	25 min
Feb 18, 4:09 PM CST	Special Weather Statement	LZK	Cleveland, Lincoln	46 min
Feb 18, 4:22 PM CST	Severe Thunderstorm Warning	LZK	Garland, Saline	23 min
Feb 18, 4:24 PM CST	Special Weather Statement	LZK	Calhoun	46 min
Feb 18, 4:30 PM CST	Severe Thunderstorm Warning	LZK	Clark, Garland, Hot Spring, Pike	30 min
Feb 18, 4:33 PM CST	Special Weather Statement	LZK	Cleburne, Stone	32 min
Feb 18, 4:49 PM CST	Severe Thunderstorm Warning	LZK	Pulaski, Saline	41 min
Feb 18, 5:03 PM CST	Severe Thunderstorm Warning	LZK	Clark, Dallas	42 min
Feb 18, 5:10 PM CST	Special Weather Statement	LZK	Cleburne, Independence, Jackson	45 min
Feb 18, 5:12 PM CST	Special Weather Statement	LZK	White	33 min
Feb 18, 5:27 PM CST	Severe Thunderstorm Warning	LZK	Lonoke, Pulaski, White	33 min
Feb 18, 5:30 PM CST	Special Weather Statement	LZK	Grant, Jefferson	45 min
Feb 18, 5:42 PM CST	Severe Thunderstorm Warning	LZK	Calhoun, Clark, Cleveland, Dallas, Grant, Ouachita	33 min
Feb 18, 5:54 PM CST	Special Weather Statement	LZK	Lonoke, Prairie	46 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2013 Every severe thunderstorm warning in 2013

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.