Alert archive / Arkansas / Tornado Warnings in 2010

Tornado Warning 9, NWS Little Rock, AR

April 23, 20105 counties in Arkansas

NWS Little Rock, AR issued this tornado warning at Apr 23, 2010, 3:23 PM CDT for 5 counties in Arkansas. It was in force for 37 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 23, 2010, 3:23 PM CDT (20:23 UTC)
Expired
Apr 23, 2010, 4:00 PM CDT
In force
37 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon

Counties Conway County, AR, Perry County, AR, Pope County, AR, Van Buren County, AR, Yell County, AR

The radar

The Little Rock radar (KLZK), 75 km from the middle of the area, began a volume at 20:25 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.

IssuedProductOfficeLasted
Apr 23, 12:51 PM CDTTornado WatchSPC9 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 8.4 hours before the alert went out and 200 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-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 2010-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 144 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2010-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
144 J/kg
Mixed-layer CIN
-173 J/kg
Mixed-layer LCL
855 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
139 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 tornado 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 tornado warning went out at Apr 23, 3:03 PM CDT, 20 minutes earlier.

Area forecast discussion, Apr 23, 3:03 PM CDT, 20 minutes before
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Hazardous weather outlook, Apr 23, 5:00 AM CDT, 10 hours 23 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
500 AM CDT FRI APR 23 2010

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-241000-
ARKANSAS-BAXTER-BOONE-BRADLEY-CALHOUN-CLARK-CLEBURNE-CLEVELAND-
CONWAY-DALLAS-DESHA-DREW-FAULKNER-FULTON-GARLAND-GRANT-HOT SPRING-
INDEPENDENCE-IZARD-JACKSON-JEFFERSON-JOHNSON-LINCOLN-LOGAN-LONOKE-
MARION-MONROE-MONTGOMERY-NEWTON-OUACHITA-PERRY-PIKE-POLK-POPE-
PRAIRIE-PULASKI-SALINE-SCOTT-SEARCY-SHARP-STONE-VAN BUREN-WHITE-
WOODRUFF-YELL-
500 AM CDT FRI APR 23 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS.

.DAY ONE...TODAY AND TONIGHT

SIGNIFICANT SEVERE WEATHER OUTBREAK EXPECTED THIS AFTERNOON AND
EVENING

A SIGNIFICANT SEVERE WEATHER THREAT IS ABOUT TO UNFOLD ACROSS
ARKANSAS TODAY AND TONIGHT. A STRONG UPPER LEVEL STORM SYSTEM WILL
EMERGE FROM THE ROCKY MOUNTAINS TODAY AND BRING INCREASING CHANCES
OF SHOWERS AND THUNDERSTORMS TO THE NATURAL STATE FOR TODAY AND
TONIGHT.

ARKANSAS WILL BE IN THE WARM SECTOR TODAY WITH INCREASING
TEMPERATURES AND MOISTURE AS THE WARM FRONT IS IN MISSOURI. SOME
STORMS WILL BE STRONG TO SEVERE...PARTICULARLY THIS AFTERNOON AND
EVENING AHEAD OF AN APPROACHING COLD FRONT. A MODERATE RISK OF
SEVERE THUNDERSTORMS HAS BEEN ISSUED FOR NEARLY ALL OF ARKANSAS.

SEVERE STORMS THAT DEVELOP WILL HAVE THE CAPABILITY TO PRODUCE LARGE
HAIL...DAMAGING WINDS AND ISOLATED TORNADOES. THERE WILL BE A LARGE
AMOUNT OF WIND ENERGY AND WIND SHEAR IN THE LOWER LEVELS OF THE
ATMOSPHERE AND GIVEN THIS...ISOLATED TORNADOES WILL BE A THREAT.

THE TORNADO THREAT WILL BE HIGHEST ON FRIDAY AND FRIDAY NIGHT AHEAD
OF THE COLD FRONTAL BOUNDARY. RESIDENTS ACROSS ARKANSAS SHOULD STAY
INFORMED CONCERNING THE WEATHER TODAY AND TONIGHT DUE TO THE
POTENTIAL FOR SEVERE WEATHER.

THE POTENTIAL DOES EXIST THAT SOME STORMS WILL FORM AND MOVE OVER
THE SAME AREAS...AND THIS WILL ALLOW FOR THE POSSIBILITY OF LOCALLY
HEAVY RAINFALL AND FLASH FLOODING. ONE TO THREE INCHES OF RAINFALL
ARE POSSIBLE...MAINLY IN AREAS EAST OF A LINE FROM CAMDEN TO
BRINKLEY FRIDAY THROUGH SATURDAY NIGHT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THE SEVERE THUNDERSTORM THREAT WILL CONTINUE INTO SATURDAY ALONG AND
AHEAD OF THE COLD FRONT. A MODERATE RISK OF SEVERE THUNDERSTORMS HAS
BEEN ISSUED FOR SOUTHEAST AND EAST ARKANSAS ON SATURDAY...AND A
SLIGHT RISK FOR THE REST OF THE STATE. THESE STORMS WILL HAVE THE
CAPABILITY TO PRODUCE LARGE HAIL...DAMAGING WINDS AND ISOLATED
TORNADOES.

RESIDENTS ACROSS ARKANSAS SHOULD STAY INFORMED CONCERNING THE
WEATHER SATURDAY DUE TO THE POTENTIAL FOR SEVERE WEATHER. THE
POTENTIAL DOES EXIST THAT SOME STORMS WILL FORM AND MOVE OVER THE
SAME AREAS...AND THIS WILL ALLOW FOR THE POSSIBILITY OF LOCALLY
HEAVY RAINFALL AND FLASH FLOODING.

THE COLD FRONT IS EXPECTED TO MOVE QUICKLY THROUGH THE STATE AND
CLEAR THE AREA SATURDAY AFTERNOON...DECREASING PRECIPITATION
CHANCES. SMALL RAIN CHANCES WILL CONTINUE INTO SUNDAY ESPECIALLY
NORTH THROUGH SUNDAY AFTERNOON.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE LIKELY THIS AFTERNOON AND EVENING AND
AGAIN ON SATURDAY.

&&

VISIT NWS LITTLE ROCK ON THE WEB. GO TO WEATHER.GOV AND CLICK ON
CENTRAL ARKANSAS.

51

In the hours before

Special weather statement, Apr 23, 10:59 AM CDT, 4 hours 24 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1059 AM CDT FRI APR 23 2010

ARZ042-043-054-231640-
GARLAND-HOT SPRING-SALINE-
1059 AM CDT FRI APR 23 2010

...SIGNIFICANT WEATHER ADVISORY FOR GARLAND...HOT SPRING AND SALINE
COUNTIES UNTIL 1140 AM CDT...

AT 1059 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES SOUTHWEST OF
LAKE OUACHITA TO PINEY TO LAKE CATHERINE...MOVING NORTHEAST AT 50
MPH.

SMALL HAIL...AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THESE
STORMS.

AREAS THAT WILL BE AFFECTED INCLUDE LAKE OUACHITA...LONSDALE...
BENTON...BRYANT...JESSIEVILLE AND HURRICANE LAKE.

PEOPLE IN GARLAND...HOT SPRING AND SALINE COUNTIES...INCLUDING
MOUNTAIN PINE...LAKE OUACHITA...LONSDALE...BENTON...BRYANT...
JESSIEVILLE AND HURRICANE LAKE...SHOULD MONITOR THE WEATHER SITUATION
CLOSELY. LISTEN FOR POSSIBLE WARNINGS AND BE PREPARED TO TAKE
APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN.

57
Local storm report, Apr 23, 1:08 PM CDT, 2 hours 15 minutes before
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Local storm report, Apr 23, 2:54 PM CDT, 29 minutes before
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Local storm report, Apr 23, 3:02 PM CDT, 21 minutes before
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Local storm report, Apr 23, 3:04 PM CDT, 19 minutes before
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Local storm report, Apr 23, 3:13 PM CDT, 10 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 23, 12:30 PM CDTSevere Thunderstorm WarningLZKConway, Faulkner, Perry, Pulaski, Saline26 min
Apr 23, 12:49 PM CDTSevere Thunderstorm WarningLZKConway, Faulkner, Perry, Pulaski26 min
Apr 23, 1:13 PM CDTSevere Thunderstorm WarningLZKMontgomery, Pike, Polk34 min
Apr 23, 1:21 PM CDTSevere Thunderstorm WarningLZKClark, Garland, Hot Spring, Montgomery, Pike24 min
Apr 23, 1:37 PM CDTSevere Thunderstorm WarningLZKBradley, Calhoun, Ouachita38 min
Apr 23, 1:45 PM CDTSevere Thunderstorm WarningLZKConway, Garland, Montgomery, Perry, Pope, Saline and 1 more45 min
Apr 23, 2:09 PM CDTSevere Thunderstorm WarningLZKClark, Garland, Hot Spring, Saline51 min
Apr 23, 2:17 PM CDTSevere Thunderstorm WarningLZKConway, Faulkner, Garland, Perry, Pulaski, Saline43 min
Apr 23, 2:57 PM CDTSevere Thunderstorm WarningLZKCleburne, Conway, Faulkner, Perry, Van Buren48 min
Apr 23, 2:59 PM CDTSevere Thunderstorm WarningLZKConway, Perry, Pope, Van Buren, Yell46 min
Apr 23, 3:45 PM CDTSevere Thunderstorm WarningLZKCleburne, Faulkner, Independence, Stone, Van Buren, White45 min
Apr 23, 3:48 PM CDTSevere Thunderstorm WarningLZKCalhoun, Cleveland, Dallas, Grant, Jefferson, Ouachita42 min
Apr 23, 3:58 PM CDTSevere Thunderstorm WarningLZKCleburne, Conway, Faulkner, Stone, Van Buren47 min
Apr 23, 4:18 PM CDTFlash Flood WarningLZKCleburne, Conway, Faulkner, Van Buren3 hr
Apr 23, 4:29 PM CDTSevere Thunderstorm WarningLZKCleveland, Dallas, Grant, Jefferson, Lincoln46 min
Apr 23, 4:30 PM CDTSevere Thunderstorm WarningLZKCleburne, Faulkner, Independence, Izard, Stone, Van Buren45 min
Apr 23, 4:36 PM CDTSevere Thunderstorm WarningLZKCleburne, Independence, Jackson, Sharp, White39 min
Apr 23, 5:08 PM CDTFlash Flood WarningLZKCleburne, Independence, Stone, Van Buren3 hr
Apr 23, 5:15 PM CDTSevere Thunderstorm WarningLZKCleburne, Independence, Jackson, Sharp, Stone45 min
Apr 23, 5:49 PM CDTFlash Flood WarningLZKIndependence, Jackson, Sharp2 hr
Apr 23, 5:54 PM CDTSevere Thunderstorm WarningLZKIndependence, Jackson36 min
Apr 23, 6:13 PM CDTSevere Thunderstorm WarningLZKLonoke, Prairie, White, Woodruff47 min

Nearby

Tornado Warnings in Arkansas, 2010Every tornado warning in 2010Tornadoes in 2010

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.