Alert archive / Arkansas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 68, NWS Little Rock, AR

April 9, 20154 counties in Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Apr 9, 2015, 3:32 PM CDT for 4 counties in Arkansas. It was in force for 43 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 9, 2015, 3:32 PM CDT (20:32 UTC)
Expired: Apr 9, 2015, 4:15 PM CDT
In force: 43 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Calhoun County, AR, Clark County, AR, Dallas County, AR, Ouachita County, AR

The radar

The Little Rock radar (KLZK), 126 km from the middle of the area, began a volume at 20:32 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 9, 3:06 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 8.5 hours before the alert went out and 171 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: 641 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 674 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 207 m²/s²
0-3 km storm-relative helicity: 244 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.1

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 9, 12:34 PM CDT, 2 hours 58 minutes earlier.

Area forecast discussion, Apr 9, 12:34 PM CDT, 2 hours 58 minutes before

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Hazardous weather outlook, Apr 9, 5:00 AM CDT, 10 hours 32 minutes before

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In the hours before

Special weather statement, Apr 9, 3:19 PM CDT, 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
319 PM CDT THU APR 9 2015

ARZ055-056-062-063-092050-
CLEVELAND AR-DALLAS AR-GRANT AR-JEFFERSON AR-
319 PM CDT THU APR 9 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN JEFFERSON...
SOUTHEASTERN GRANT...NORTHEASTERN DALLAS AND NORTHWESTERN CLEVELAND
COUNTIES UNTIL 345 PM CDT...

AT 318 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES SOUTHEAST OF CARTHAGE...OR 11 MILES
NORTHWEST OF GRAYS LAKE...MOVING NORTHEAST AT 25 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  LAMONT...             GRAPEVINE...          FARINDALE...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

LAT...LON 3428 9231 3411 9212 3399 9247 3404 9253
TIME...MOT...LOC 2019Z 227DEG 23KT 3404 9246

51

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 10:53 AM CDT	River Flood Warning	LZK	Prairie, White, Woodruff	13 days
Apr 9, 3:19 PM CDT	Special Weather Statement	LZK	Grant	31 min
Apr 9, 4:18 PM CDT	Special Weather Statement	LZK	Calhoun, Ouachita	32 min
Apr 9, 5:05 PM CDT	Special Weather Statement	LZK	Newton	30 min
Apr 9, 5:06 PM CDT	Special Weather Statement	LZK	Newton	29 min
Apr 9, 5:12 PM CDT	Severe Thunderstorm Warning	LZK	Newton	48 min
Apr 9, 5:12 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Garland, Hot Spring, Montgomery, Pike	33 min
Apr 9, 5:22 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Pulaski, Saline	23 min
Apr 9, 5:34 PM CDT	Severe Thunderstorm Warning	LZK	Newton, Pope, Searcy, Stone, Van Buren	26 min
Apr 9, 5:35 PM CDT	Special Weather Statement	LZK	Bradley, Drew	45 min
Apr 9, 5:41 PM CDT	Severe Thunderstorm Warning	LZK	Conway, Faulkner, Lonoke, Perry, Pulaski, Saline	49 min
Apr 9, 5:42 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Garland, Hot Spring, Montgomery	48 min
Apr 9, 5:45 PM CDT	Severe Thunderstorm Warning	LZK	Boone, Marion, Newton, Searcy	45 min
Apr 9, 5:49 PM CDT	Severe Thunderstorm Warning	LZK	Conway, Perry, Pope, Saline	25 min
Apr 9, 5:53 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Van Buren	52 min
Apr 9, 5:55 PM CDT	Severe Thunderstorm Warning	LZK	Independence, Jackson	35 min
Apr 9, 6:01 PM CDT	Severe Thunderstorm Warning	LZK	Searcy, Stone, Van Buren	44 min
Apr 9, 6:13 PM CDT	Severe Thunderstorm Warning	LZK	Bradley, Calhoun, Cleveland, Ouachita	47 min
Apr 9, 6:24 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner, Lonoke, Pulaski, White	36 min
Apr 9, 6:27 PM CDT	Severe Thunderstorm Warning	LZK	Fulton, Izard, Sharp	33 min
Apr 9, 6:30 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Independence, Jackson, White	30 min
Apr 9, 6:34 PM CDT	Severe Thunderstorm Warning	LZK	Independence, Izard, Stone	26 min
Apr 9, 6:37 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Faulkner, Van Buren, White	38 min
Apr 9, 6:40 PM CDT	Severe Thunderstorm Warning	LZK	Sharp	35 min
Apr 9, 6:55 PM CDT	Severe Thunderstorm Warning	LZK	Independence, Jackson, White	50 min
Apr 9, 6:57 PM CDT	Severe Thunderstorm Warning	LZK	Fulton, Sharp	10 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2015 Every severe thunderstorm warning in 2015

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.