Alert archive / Arkansas / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 133, NWS Little Rock, AR

May 9, 2014Ouachita County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at May 9, 2014, 5:21 PM CDT for Ouachita 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: May 9, 2014, 5:21 PM CDT (22:21 UTC)
Expired: May 9, 2014, 6:00 PM CDT
In force: 39 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

County Ouachita County, AR

The radar

The Little Rock radar (KLZK), 150 km from the middle of the area, began a volume at 22:24 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

Shreveport, LA (KBAD), launched 12:00Z, 10.4 hours before the alert went out and 148 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: 601 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 511 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 316 m²/s²
0-3 km storm-relative helicity: 378 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.1

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 May 9, 4:37 PM CDT, 44 minutes earlier.

Area forecast discussion, May 9, 4:37 PM CDT, 44 minutes before

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Hazardous weather outlook, May 9, 4:52 PM CDT, 29 minutes before

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In the hours before

Special weather statement, May 9, 2:48 PM CDT, 2 hours 33 minutes before

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Special weather statement, May 9, 3:15 PM CDT, 2 hours 6 minutes before

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Special weather statement, May 9, 3:42 PM CDT, 1 hour 39 minutes before

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Special weather statement, May 9, 5:07 PM CDT, 14 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
May 8, 8:15 PM CDT	Flash Flood Warning	LZK	Johnson, Logan, Montgomery, Polk, Pope, Scott and 1 more	4 hr
May 8, 8:36 PM CDT	Severe Thunderstorm Warning	LZK	Conway, Perry, Pope, Van Buren, Yell	39 min
May 8, 8:43 PM CDT	Tornado Warning	LZK	Conway, Pope, Van Buren	47 min
May 8, 9:15 PM CDT	Severe Thunderstorm Warning	LZK	Conway, Faulkner, Perry, Pope, Van Buren	45 min
May 9, 12:04 AM CDT	Flash Flood Warning	LZK	Montgomery, Polk, Scott, Yell	3 hr
May 9, 9:24 AM CDT	River Flood Warning	LZK	Yell	46 hr
May 9, 2:48 PM CDT	Special Weather Statement	LZK	Cleburne	27 min
May 9, 3:15 PM CDT	Special Weather Statement	LZK	Independence	30 min
May 9, 3:42 PM CDT	Special Weather Statement	LZK	Jackson	18 min
May 9, 5:07 PM CDT	Special Weather Statement	LZK	Jackson	23 min
May 9, 6:25 PM CDT	Special Weather Statement	LZK	Pike	30 min
May 9, 6:58 PM CDT	Special Weather Statement	LZK	Pike	32 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2014 Every severe thunderstorm warning in 2014

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.