Alert archive / Arkansas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 33, NWS Little Rock, AR

March 1, 20176 counties in Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Mar 1, 2017, 5:12 AM CST for 6 counties in Arkansas. It was in force for 48 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 1, 2017, 5:12 AM CST (11:12 UTC)
Expired: Mar 1, 2017, 6:00 AM CST
In force: 48 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Jackson County, AR, Lonoke County, AR, Monroe County, AR, Prairie County, AR, White County, AR, Woodruff County, AR

The radar

The Little Rock radar (KLZK), 76 km from the middle of the area, began a volume at 11:15 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, 11.2 hours before the alert went out and 293 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: 1117 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 931 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 341 m²/s²
0-3 km storm-relative helicity: 315 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 8.2

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 1, 4:11 AM CST, 1 hour 1 minute earlier.

Area forecast discussion, Mar 1, 4:11 AM CST, 1 hour 1 minute before

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Hazardous weather outlook, Mar 1, 4:26 AM CST, 46 minutes before

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In the hours before

Local storm report, Mar 1, 4:48 AM CST, 24 minutes before

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Local storm report, Mar 1, 4:51 AM CST, 21 minutes before

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Local storm report, Mar 1, 5:01 AM CST, 11 minutes before

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Local storm report, Mar 1, 5:03 AM CST, 9 minutes before

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Local storm report, Mar 1, 5:09 AM CST, 3 minutes before

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Local storm report, Mar 1, 5:10 AM CST, 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
Feb 28, 6:05 PM CST	Severe Thunderstorm Warning	LZK	Faulkner, Perry, Pulaski	40 min
Feb 28, 6:25 PM CST	Severe Thunderstorm Warning	LZK	Faulkner, Lonoke, White	50 min
Feb 28, 6:33 PM CST	Tornado Warning	LZK	White	42 min
Feb 28, 7:09 PM CST	Severe Thunderstorm Warning	LZK	Jackson, White, Woodruff	51 min
Feb 28, 7:14 PM CST	Tornado Warning	LZK	Jackson, White, Woodruff	35 min
Feb 28, 7:35 PM CST	Special Weather Statement	LZK	Baxter	40 min
Feb 28, 7:52 PM CST	Severe Thunderstorm Warning	LZK	Jackson, Woodruff	23 min
Feb 28, 8:40 PM CST	Special Weather Statement	LZK	Izard, Stone	35 min
Feb 28, 9:40 PM CST	Special Weather Statement	LZK	Sharp	20 min
Mar 1, 1:07 AM CST	Severe Thunderstorm Warning	LZK	Johnson, Logan, Newton, Pope, Searcy, Yell	38 min
Mar 1, 1:39 AM CST	Severe Thunderstorm Warning	LZK	Baxter, Conway, Johnson, Logan, Marion, Newton and 4 more	51 min
Mar 1, 1:47 AM CST	Special Weather Statement	LZK	Logan, Scott, Yell	43 min
Mar 1, 2:27 AM CST	Severe Thunderstorm Warning	LZK	Baxter, Cleburne, Conway, Faulkner, Independence, Izard and 6 more	48 min
Mar 1, 2:35 AM CST	Special Weather Statement	LZK	Conway, Perry, Yell	40 min
Mar 1, 2:36 AM CST	Special Weather Statement	LZK	Montgomery, Polk	39 min
Mar 1, 2:43 AM CST	Severe Thunderstorm Warning	LZK	Baxter, Fulton, Izard, Sharp	47 min
Mar 1, 3:05 AM CST	Severe Thunderstorm Warning	LZK	Independence, Jackson, Sharp, White, Woodruff	40 min
Mar 1, 3:16 AM CST	Special Weather Statement	LZK	Prairie, White, Woodruff	44 min
Mar 1, 4:35 AM CST	Severe Thunderstorm Warning	LZK	Lonoke, Prairie, Pulaski, Saline, White	40 min
Mar 1, 5:43 AM CST	Special Weather Statement	LZK	Pulaski, Saline	32 min
Mar 1, 6:42 AM CST	Special Weather Statement	LZK	Lonoke, Prairie, Pulaski, Saline	48 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2017 Every severe thunderstorm warning in 2017

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.