Alert archive / Arkansas / Tornado Warnings in 2019

Tornado Warning 38, NWS Little Rock, AR

October 21, 2019Jefferson County, Arkansas

NWS Little Rock, AR issued this tornado warning at Oct 21, 2019, 4:41 AM CDT for Jefferson County, Arkansas. It was in force for 20 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: Oct 21, 2019, 4:41 AM CDT (09:41 UTC)
Expired: Oct 21, 2019, 5:01 AM CDT
In force: 20 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Jefferson County, AR

The radar

The Little Rock radar (KLZK), 70 km from the middle of the area, began a volume at 09:43 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
Oct 20, 11:48 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 9.7 hours before the alert went out and 192 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: 689 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 952 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 167 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.6

Open this sounding in Storm Lab

The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 20, 9:48 PM CDT	Special Weather Statement	LZK	Ouachita	27 min
Oct 20, 10:18 PM CDT	Special Weather Statement	LZK	Ouachita	27 min
Oct 20, 10:47 PM CDT	Special Weather Statement	LZK	Dallas	28 min
Oct 20, 11:24 PM CDT	Special Weather Statement	LZK	Polk	36 min
Oct 21, 12:12 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Montgomery, Pike, Polk	48 min
Oct 21, 12:46 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Garland, Hot Spring, Montgomery, Perry, Pike and 2 more	44 min
Oct 21, 1:11 AM CDT	Severe Thunderstorm Warning	LZK	Conway, Faulkner, Garland, Grant, Hot Spring, Perry and 2 more	49 min
Oct 21, 1:14 AM CDT	Severe Thunderstorm Warning	LZK	Boone, Johnson, Logan, Marion, Newton, Searcy	46 min
Oct 21, 1:30 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Garland, Grant, Hot Spring, Montgomery, Pike and 1 more	30 min
Oct 21, 1:47 AM CDT	Severe Thunderstorm Warning	LZK	Baxter, Boone, Johnson, Marion, Newton, Pope and 1 more	25 min
Oct 21, 1:50 AM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Conway, Faulkner, Lonoke, Perry, Pulaski and 1 more	40 min
Oct 21, 1:54 AM CDT	Special Weather Statement	LZK	Montgomery, Scott	36 min
Oct 21, 1:59 AM CDT	Severe Thunderstorm Warning	LZK	Grant, Hot Spring, Saline	31 min
Oct 21, 2:04 AM CDT	Severe Thunderstorm Warning	LZK	Logan, Montgomery, Polk, Scott, Yell	41 min
Oct 21, 2:31 AM CDT	Severe Thunderstorm Warning	LZK	Conway, Garland, Logan, Montgomery, Perry, Pope and 2 more	44 min
Oct 21, 2:37 AM CDT	Severe Thunderstorm Warning	LZK	Grant, Jefferson, Lonoke, Pulaski, Saline	38 min
Oct 21, 2:41 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Garland, Hot Spring, Montgomery, Pike	49 min
Oct 21, 2:47 AM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Prairie, Pulaski, White	28 min
Oct 21, 3:04 AM CDT	Severe Thunderstorm Warning	LZK	Jackson, Jefferson, Lonoke, Prairie, Pulaski, White and 1 more	41 min
Oct 21, 3:08 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Garland, Hot Spring, Montgomery, Pike, Saline	52 min
Oct 21, 3:27 AM CDT	Severe Thunderstorm Warning	LZK	Jackson, Lonoke, Monroe, Prairie, White, Woodruff	33 min
Oct 21, 3:45 AM CDT	Severe Thunderstorm Warning	LZK	Faulkner, Lonoke, Pulaski, Saline, White	45 min
Oct 21, 3:49 AM CDT	Special Weather Statement	LZK	Dallas, Grant, Lonoke	41 min
Oct 21, 4:14 AM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Prairie, Pulaski, Saline, White, Woodruff	46 min
Oct 21, 4:31 AM CDT	Severe Thunderstorm Warning	LZK	Grant, Jefferson	44 min
Oct 21, 4:45 AM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Monroe, Prairie, White, Woodruff	60 min
Oct 21, 4:54 AM CDT	Severe Thunderstorm Warning	LZK	Bradley, Calhoun, Cleveland, Dallas, Ouachita	51 min
Oct 21, 5:06 AM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Cleveland, Grant, Jefferson, Lincoln, Lonoke and 2 more	39 min
Oct 21, 5:19 AM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Bradley, Calhoun, Cleveland, Desha, Drew and 1 more	41 min
Oct 21, 5:43 AM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Desha, Jefferson, Lincoln, Monroe	66 min
Oct 21, 5:55 AM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Bradley, Calhoun, Cleveland, Desha, Drew and 1 more	70 min

Nearby

Tornado Warnings in Arkansas, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.