Alert archive / Arkansas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 80, NWS Little Rock, AR

March 30, 2013Newton County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Mar 30, 2013, 10:34 PM CDT for Newton 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: Mar 30, 2013, 10:34 PM CDT (03:34 UTC)
Expired: Mar 30, 2013, 11:15 PM CDT
In force: 41 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

County Newton County, AR

The radar

The Western Arkansas radar (KSRX), 125 km from the middle of the area, began a volume at 03:36 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, 3.6 hours before the alert went out and 121 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: 453 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 1112 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 139 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 0.8

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 Mar 30, 9:39 PM CDT, 55 minutes earlier.

Area forecast discussion, Mar 30, 9:39 PM CDT, 55 minutes before

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Hazardous weather outlook, Mar 30, 9:45 PM CDT, 49 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
Mar 31, 12:43 AM CDT	Special Weather Statement	LZK	Logan	47 min
Mar 31, 1:27 AM CDT	Special Weather Statement	LZK	Faulkner	43 min
Mar 31, 1:29 AM CDT	Special Weather Statement	LZK	Conway	46 min
Mar 31, 2:10 AM CDT	Special Weather Statement	LZK	Pulaski	45 min
Mar 31, 2:14 AM CDT	Special Weather Statement	LZK	Lincoln	46 min
Mar 31, 3:11 AM CDT	Special Weather Statement	LZK	Jefferson	44 min
Mar 31, 3:40 AM CDT	Special Weather Statement	LZK	Arkansas, Desha, Jefferson, Lincoln	60 min
Mar 31, 6:18 AM CDT	Special Weather Statement	LZK	Scott	47 min
Mar 31, 6:57 AM CDT	Special Weather Statement	LZK	Yell	28 min
Mar 31, 6:59 AM CDT	Special Weather Statement	LZK	Scott	31 min
Mar 31, 8:02 AM CDT	Special Weather Statement	LZK	Pulaski	33 min
Mar 31, 8:20 AM CDT	Special Weather Statement	LZK	Garland, Hot Spring	30 min
Mar 31, 8:22 AM CDT	Special Weather Statement	LZK	Clark	33 min
Mar 31, 9:17 AM CDT	Special Weather Statement	LZK	Dallas, Ouachita	28 min
Mar 31, 10:47 AM CDT	Special Weather Statement	LZK	Bradley	48 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.