Alert archive / Arkansas / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 474, NWS Little Rock, AR

May 23, 2011Johnson County, Newton County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at May 23, 2011, 3:48 PM CDT for Johnson County, Newton County, Arkansas. It was in force for 42 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: May 23, 2011, 3:48 PM CDT (20:48 UTC)
Expired: May 23, 2011, 4:30 PM CDT
In force: 42 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

Counties Johnson County, AR, Newton County, AR

The radar

The Western Arkansas radar (KSRX), 105 km from the middle of the area, began a volume at 20:49 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
May 23, 1:34 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 8.8 hours before the alert went out and 135 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: 1041 J/kg
Mixed-layer CIN: -257 J/kg
Mixed-layer LCL: 1640 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 247 m²/s²
0-3 km storm-relative helicity: 224 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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 May 23, 3:35 PM CDT, 13 minutes earlier.

Area forecast discussion, May 23, 3:35 PM CDT, 13 minutes before

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Hazardous weather outlook, May 23, 3:15 PM CDT, 33 minutes before

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In the hours before

Special weather statement, May 23, 1:30 PM CDT, 2 hours 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
130 PM CDT MON MAY 23 2011

ARZ004>006-014-015-231900-
BAXTER AR-FULTON AR-IZARD AR-MARION AR-STONE AR-
130 PM CDT MON MAY 23 2011

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN IZARD...SOUTHERN
BAXTER...EXTREME SOUTHEASTERN MARION...EXTREME NORTHERN STONE AND
EXTREME SOUTHWESTERN FULTON COUNTIES UNTIL 200 PM CDT...

AT 130 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
CLUSTER OF STRONG THUNDERSTORMS NEAR OLD JOE...OR 13 MILES SOUTHEAST
OF MOUNTAIN HOME...MOVING NORTHEAST AT 50 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  WIDEMAN...            SHIPP...              SALESVILLE...
  RODNEY...             PUSH MTN...           PINEVILLE...
  NORFORK DAM...        NORFORK...            HERRON...
  CULP...               CARTNEY...            CALICO ROCK...
  BRIARCLIFF...         ADVANCE...            LONE ROCK...
  JORDAN...             DOLPH...              WOOD PT PARK...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3633 9215 3618 9199 3604 9236 3620 9247
TIME...MOT...LOC 1830Z 244DEG 45KT 3620 9219

58

Local storm report, May 23, 2:00 PM CDT, 1 hour 48 minutes before

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Local storm report, May 23, 2:05 PM CDT, 1 hour 43 minutes before

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Local storm report, May 23, 2:33 PM CDT, 1 hour 15 minutes before

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Local storm report, May 23, 3:06 PM CDT, 42 minutes before

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Local storm report, May 23, 3:48 PM CDT, 0 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
May 22, 7:08 PM CDT	Severe Thunderstorm Warning	LZK	Fulton, Izard, Sharp	37 min
May 22, 7:51 PM CDT	Special Weather Statement	LZK	Sharp	44 min
May 22, 8:30 PM CDT	Flash Flood Watch	LZK	Baxter, Cleburne, Conway, Faulkner, Fulton, Independence and 8 more	59 hr
May 22, 8:31 PM CDT	Special Weather Statement	LZK	Boone, Marion	44 min
May 22, 8:45 PM CDT	Severe Thunderstorm Warning	LZK	Boone, Marion	30 min
May 22, 9:00 PM CDT	Severe Thunderstorm Warning	LZK	Boone	30 min
May 22, 9:14 PM CDT	Flash Flood Warning	LZK	Baxter, Boone, Marion	3 hr
May 22, 9:47 PM CDT	Special Weather Statement	LZK	Boone	28 min
May 22, 10:01 PM CDT	Severe Thunderstorm Warning	LZK	Baxter, Marion	29 min
May 22, 10:09 PM CDT	Special Weather Statement	LZK	Scott	46 min
May 22, 10:20 PM CDT	Severe Thunderstorm Warning	LZK	Logan, Scott, Yell	26 min
May 22, 10:22 PM CDT	Special Weather Statement	LZK	Newton, Searcy, Stone	48 min
May 22, 10:37 PM CDT	Severe Thunderstorm Warning	LZK	Baxter, Izard, Marion, Searcy, Sharp, Stone	53 min
May 22, 11:30 PM CDT	Special Weather Statement	LZK	Independence, Sharp, Stone	45 min
May 22, 11:52 PM CDT	Severe Thunderstorm Warning	LZK	Jackson, White, Woodruff	23 min
May 22, 11:58 PM CDT	Severe Thunderstorm Warning	LZK	Independence, Jackson, Sharp, Stone	47 min
May 23, 12:07 AM CDT	Severe Thunderstorm Warning	LZK	Monroe, Woodruff	23 min
May 23, 12:11 AM CDT	Severe Thunderstorm Warning	LZK	Boone, Marion	31 min
May 23, 12:45 AM CDT	Special Weather Statement	LZK	Baxter, Marion	45 min
May 23, 12:55 AM CDT	Special Weather Statement	LZK	Izard, Sharp	45 min
May 23, 8:47 AM CDT	River Flood Warning	LZK	Calhoun, Ouachita	5 days
May 23, 8:47 AM CDT	River Flood Warning	LZK	Bradley, Calhoun, Union	15 days
May 23, 9:40 AM CDT	River Flood Advisory	LZK	Randolph	36 hr
May 23, 12:38 PM CDT	Severe Thunderstorm Warning	LZK	Baxter, Marion	37 min
May 23, 12:57 PM CDT	Tornado Warning	LZK	Baxter, Fulton	33 min
May 23, 1:19 PM CDT	Tornado Warning	LZK	Baxter, Fulton, Izard	41 min
May 23, 1:30 PM CDT	Special Weather Statement	LZK	Baxter	30 min
May 23, 1:47 PM CDT	Tornado Warning	LZK	Fulton, Izard, Sharp	43 min
May 23, 3:06 PM CDT	River Flood Warning	LZK	Fulton, Sharp	19 hr
May 23, 3:06 PM CDT	River Flood Warning	LZK	Lawrence, Randolph	19 hr
May 23, 3:07 PM CDT	River Flood Warning	LZK	Izard, Stone	4 days
May 23, 3:07 PM CDT	River Flood Warning	LZK	Independence	7 days
May 23, 3:08 PM CDT	River Flood Warning	LZK	Randolph	19 hr
May 23, 3:09 PM CDT	Severe Thunderstorm Warning	LZK	Boone, Newton	51 min
May 23, 3:54 PM CDT	Severe Thunderstorm Warning	LZK	Marion, Newton, Searcy	15 min
May 23, 4:03 PM CDT	Severe Thunderstorm Warning	LZK	Johnson	57 min
May 23, 4:23 PM CDT	Special Weather Statement	LZK	Conway, Van Buren	47 min
May 23, 4:28 PM CDT	Special Weather Statement	LZK	White	47 min
May 23, 4:28 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Newton, Pope	47 min
May 23, 5:14 PM CDT	Special Weather Statement	LZK	Pope, Searcy	46 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2011 Every severe thunderstorm warning in 2011

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.