Alert archive / Arkansas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 74, NWS Little Rock, AR

April 29, 2016Montgomery County, Polk County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Apr 29, 2016, 4:40 AM CDT for Montgomery County, Polk County, Arkansas. It was in force for 65 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: Apr 29, 2016, 4:40 AM CDT (09:40 UTC)
Expired: Apr 29, 2016, 5:45 AM CDT
In force: 65 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

Counties Montgomery County, AR, Polk County, AR

The radar

The Western Arkansas radar (KSRX), 95 km from the middle of the area, began a volume at 09:39 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 29, 4:21 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 00:00Z, 9.7 hours before the alert went out and 227 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: 101 J/kg
Mixed-layer CIN: -347 J/kg
Mixed-layer LCL: 2092 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: 104 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 Apr 28, 7:32 PM CDT, 9 hours 8 minutes earlier.

Area forecast discussion, Apr 28, 7:32 PM CDT, 9 hours 8 minutes before

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Hazardous weather outlook, Apr 28, 4:00 PM CDT, 12 hours 40 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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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
Apr 29, 5:20 AM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Pike, Polk	55 min
Apr 29, 6:06 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Garland, Hot Spring, Montgomery, Pike	54 min
Apr 29, 6:19 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas	26 min
Apr 29, 6:25 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Montgomery, Perry	34 min
Apr 29, 6:41 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Hot Spring	23 min
Apr 29, 6:42 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas	33 min
Apr 29, 7:14 AM CDT	Special Weather Statement	LZK	Dallas, Grant	46 min
Apr 29, 7:56 AM CDT	Flash Flood Warning	LZK	Montgomery, Pike, Polk	6 hr
Apr 29, 8:49 AM CDT	Special Weather Statement	LZK	Lonoke	41 min
Apr 29, 8:57 AM CDT	Flash Flood Warning	LZK	Pulaski, Saline	5 hr
Apr 29, 9:18 AM CDT	Special Weather Statement	LZK	White	42 min
Apr 29, 9:40 AM CDT	Special Weather Statement	LZK	Garland, Pike	50 min
Apr 29, 10:08 AM CDT	Flash Flood Warning	LZK	Garland, Saline	3 hr
Apr 29, 10:21 AM CDT	Special Weather Statement	LZK	Monroe	24 min
Apr 29, 10:22 AM CDT	Special Weather Statement	LZK	Pulaski	38 min
Apr 29, 10:38 AM CDT	Special Weather Statement	LZK	Desha, Drew	37 min
Apr 29, 10:41 AM CDT	Special Weather Statement	LZK	Hot Spring	49 min
Apr 29, 10:44 AM CDT	Special Weather Statement	LZK	Monroe	16 min
Apr 29, 10:46 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Hot Spring	44 min
Apr 29, 10:54 AM CDT	Special Weather Statement	LZK	Monroe	21 min
Apr 29, 11:04 AM CDT	Special Weather Statement	LZK	Pulaski	41 min
Apr 29, 11:53 AM CDT	Special Weather Statement	LZK	Independence, White	37 min
Apr 29, 12:07 PM CDT	Special Weather Statement	LZK	Pike	38 min
Apr 29, 12:14 PM CDT	River Flood Warning	LZK	Calhoun, Ouachita	15 days
Apr 29, 12:19 PM CDT	River Flood Warning	LZK	Saline	64 hr
Apr 29, 12:24 PM CDT	Special Weather Statement	LZK	Jefferson	51 min
Apr 29, 1:06 PM CDT	Special Weather Statement	LZK	Arkansas	39 min
Apr 29, 1:53 PM CDT	Special Weather Statement	LZK	Polk	52 min
Apr 29, 4:57 PM CDT	Flash Flood Warning	LZK	Clark, Pike	5 hr
Apr 29, 6:06 PM CDT	Special Weather Statement	LZK	Clark, Hot Spring	39 min
Apr 29, 6:26 PM CDT	Flash Flood Warning	LZK	Montgomery, Polk	3 hr

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.