Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 354, NWS Little Rock, AR

August 13, 2012Arkansas County, Desha County, Monroe County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Aug 13, 2012, 7:19 AM CDT for Arkansas County, Desha County, Monroe County, Arkansas. It was in force for 41 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: Aug 13, 2012, 7:19 AM CDT (12:19 UTC)
Expired: Aug 13, 2012, 8:00 AM CDT
In force: 41 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

Counties Arkansas County, AR, Desha County, AR, Monroe County, AR

The radar

The Little Rock radar (KLZK), 110 km from the middle of the area, began a volume at 12:20 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

Little Rock, AR (KBYH), launched 12:00Z, 0.3 hours before the alert went out and 137 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: 1586 J/kg
Mixed-layer CIN: -113 J/kg
Mixed-layer LCL: 909 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 163 m²/s²
0-3 km storm-relative helicity: 211 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.0

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 Aug 13, 6:26 AM CDT, 53 minutes earlier.

Area forecast discussion, Aug 13, 6:26 AM CDT, 53 minutes before

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Hazardous weather outlook, Aug 13, 5:00 AM CDT, 2 hours 19 minutes before

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In the hours before

Special weather statement, Aug 13, 4:47 AM CDT, 2 hours 32 minutes before

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Special weather statement, Aug 13, 4:57 AM CDT, 2 hours 22 minutes before

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Special weather statement, Aug 13, 6:09 AM CDT, 1 hour 10 minutes before

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Special weather statement, Aug 13, 7:06 AM CDT, 13 minutes before

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Special weather statement, Aug 13, 7:07 AM CDT, 12 minutes before

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Special weather statement, Aug 13, 7:08 AM CDT, 11 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
Aug 13, 12:22 AM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan	38 min
Aug 13, 12:47 AM CDT	Special Weather Statement	LZK	Logan, Yell	43 min
Aug 13, 1:01 AM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan, Pope, Yell	44 min
Aug 13, 1:03 AM CDT	Special Weather Statement	LZK	Scott	47 min
Aug 13, 1:05 AM CDT	Severe Thunderstorm Warning	LZK	Logan, Scott	40 min
Aug 13, 1:32 AM CDT	Severe Thunderstorm Warning	LZK	Conway, Logan, Perry, Pope, Yell	58 min
Aug 13, 1:37 AM CDT	Special Weather Statement	LZK	Yell	43 min
Aug 13, 2:07 AM CDT	Special Weather Statement	LZK	Conway	43 min
Aug 13, 2:10 AM CDT	Special Weather Statement	LZK	Newton	45 min
Aug 13, 2:15 AM CDT	Special Weather Statement	LZK	Perry	45 min
Aug 13, 2:23 AM CDT	Severe Thunderstorm Warning	LZK	Conway, Faulkner, Perry, Pulaski	67 min
Aug 13, 3:01 AM CDT	Severe Thunderstorm Warning	LZK	Faulkner, Lonoke, Prairie, Pulaski, White	59 min
Aug 13, 3:49 AM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Monroe, Prairie	41 min
Aug 13, 3:53 AM CDT	Special Weather Statement	LZK	Pulaski, Saline	47 min
Aug 13, 4:00 AM CDT	Severe Thunderstorm Warning	LZK	Pulaski, Saline	45 min
Aug 13, 4:22 AM CDT	Severe Thunderstorm Warning	LZK	Conway, Faulkner, Van Buren	38 min
Aug 13, 4:24 AM CDT	Special Weather Statement	LZK	Sharp	46 min
Aug 13, 4:45 AM CDT	Severe Thunderstorm Warning	LZK	Faulkner, Perry, Pulaski	45 min
Aug 13, 4:47 AM CDT	Special Weather Statement	LZK	Monroe, Prairie	63 min
Aug 13, 4:57 AM CDT	Special Weather Statement	LZK	Faulkner	28 min
Aug 13, 6:09 AM CDT	Special Weather Statement	LZK	Monroe	46 min
Aug 13, 7:06 AM CDT	Special Weather Statement	LZK	Arkansas, Jefferson, Lincoln	44 min
Aug 13, 7:07 AM CDT	Special Weather Statement	LZK	Monroe	23 min
Aug 13, 7:08 AM CDT	Special Weather Statement	LZK	Lonoke	32 min
Aug 13, 7:45 AM CDT	Special Weather Statement	LZK	Desha, Lincoln	30 min
Aug 13, 8:19 AM CDT	Special Weather Statement	LZK	Arkansas	31 min
Aug 13, 3:03 PM CDT	Special Weather Statement	LZK	Desha	32 min
Aug 13, 4:16 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Monroe	34 min
Aug 13, 4:32 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Desha	43 min
Aug 13, 5:14 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Desha	46 min
Aug 13, 6:00 PM CDT	Severe Thunderstorm Warning	LZK	Desha	45 min
Aug 13, 6:19 PM CDT	Severe Thunderstorm Warning	LZK	Desha	41 min
Aug 13, 6:45 PM CDT	Severe Thunderstorm Warning	LZK	Desha	30 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2012 Every severe thunderstorm warning in 2012

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.