Alert archive / Arkansas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 293, NWS Little Rock, AR

September 15, 2016Independence County, Jackson County, Sharp County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Sep 15, 2016, 6:57 PM CDT for Independence County, Jackson County, Sharp County, Arkansas. It was in force for 22 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: Sep 15, 2016, 6:57 PM CDT (23:57 UTC)
Expired: Sep 15, 2016, 7:19 PM CDT
In force: 22 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Independence County, AR, Jackson County, AR, Sharp County, AR

The radar

The Little Rock radar (KLZK), 135 km from the middle of the area, began a volume at 23:58 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, 12.0 hours before the alert went out and 174 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: 797 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 1264 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 36 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 Sep 15, 6:04 PM CDT, 53 minutes earlier.

Area forecast discussion, Sep 15, 6:04 PM CDT, 53 minutes before

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Hazardous weather outlook, Sep 15, 5:00 AM CDT, 13 hours 57 minutes before

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In the hours before

Special weather statement, Sep 15, 3:26 PM CDT, 3 hours 31 minutes before

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Special weather statement, Sep 15, 6:11 PM CDT, 46 minutes before

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Special weather statement, Sep 15, 6:31 PM CDT, 26 minutes before

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Special weather statement, Sep 15, 6:55 PM CDT, 2 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
Sep 14, 8:56 PM CDT	Flash Flood Warning	LZK	Pulaski, Saline	2 hr
Sep 15, 3:26 PM CDT	Special Weather Statement	LZK	Marion	19 min
Sep 15, 6:11 PM CDT	Special Weather Statement	LZK	Jackson	34 min
Sep 15, 6:31 PM CDT	Special Weather Statement	LZK	White	44 min
Sep 15, 6:55 PM CDT	Special Weather Statement	LZK	Independence	35 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2016 Every severe thunderstorm warning in 2016

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.