Alert archive / Arkansas / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 635, NWS Little Rock, AR

June 30, 2011Pike County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Jun 30, 2011, 2:51 PM CDT for Pike County, Arkansas. It was in force for 24 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, 2011, 2:51 PM CDT (19:51 UTC)
Expired: Jun 30, 2011, 3:15 PM CDT
In force: 24 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

County Pike County, AR

The radar

The Western Arkansas radar (KSRX), 141 km from the middle of the area, began a volume at 19:53 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 (KSHV), launched 12:00Z, 7.9 hours before the alert went out and 187 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: 1415 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1324 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 61 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 Jun 30, 2:50 PM CDT, 1 minute earlier.

Area forecast discussion, Jun 30, 2:50 PM CDT, 1 minute before

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Hazardous weather outlook, Jun 30, 8:35 AM CDT, 6 hours 16 minutes before

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In the hours before

Special weather statement, Jun 30, 1:20 PM CDT, 1 hour 31 minutes before

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Special weather statement, Jun 30, 1:35 PM CDT, 1 hour 16 minutes before

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Special weather statement, Jun 30, 2:21 PM CDT, 30 minutes before

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Special weather statement, Jun 30, 2:25 PM CDT, 26 minutes before

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Local storm report, Jun 30, 2:41 PM CDT, 10 minutes before

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Special weather statement, Jun 30, 2:45 PM CDT, 6 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, 12:48 PM CDT	Special Weather Statement	LZK	Polk	47 min
Jun 30, 1:20 PM CDT	Special Weather Statement	LZK	Polk	45 min
Jun 30, 1:35 PM CDT	Special Weather Statement	LZK	Polk	45 min
Jun 30, 1:50 PM CDT	Severe Thunderstorm Warning	LZK	Polk	40 min
Jun 30, 2:21 PM CDT	Special Weather Statement	LZK	Montgomery	29 min
Jun 30, 2:25 PM CDT	Special Weather Statement	LZK	Scott	45 min
Jun 30, 2:45 PM CDT	Special Weather Statement	LZK	Howard	45 min
Jun 30, 3:16 PM CDT	Severe Thunderstorm Warning	LZK	Pike	29 min
Jun 30, 3:44 PM CDT	Severe Thunderstorm Warning	LZK	Pike	31 min
Jun 30, 3:55 PM CDT	Areal Flood Advisory	LZK	Pike	3 hr
Jun 30, 4:53 PM CDT	Special Weather Statement	LZK	Logan	32 min
Jun 30, 5:38 PM CDT	Special Weather Statement	LZK	Ouachita	42 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2011 Every severe thunderstorm warning in 2011

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.