Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 88, NWS Little Rock, AR

April 10, 2012Clark County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Apr 10, 2012, 7:05 PM CDT for Clark County, Arkansas. It was in force for 25 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 10, 2012, 7:05 PM CDT (00:05 UTC)
Expired
Apr 10, 2012, 7:30 PM CDT
In force
25 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon

County Clark County, AR

The radar

The Little Rock radar (KLZK), 121 km from the middle of the area, began a volume at 00:07 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 nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 0.1 hours before the alert went out and 183 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, Shreveport, LA at 00:00Z on 2012-04-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 498 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, Shreveport, LA at 00:00Z on 2012-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
498 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1885 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
19 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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 10, 6:40 PM CDT, 25 minutes earlier.

Area forecast discussion, Apr 10, 6:40 PM CDT, 25 minutes before
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Hazardous weather outlook, Apr 10, 5:00 AM CDT, 14 hours 5 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
500 AM CDT TUE APR 10 2012

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-111000-
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 TUE APR 10 2012

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

.DAY ONE...TODAY AND TONIGHT

WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE TODAY AS
A COUPLE OF WEAK UPPER LEVEL DISTURBANCES RIPPLE THROUGH THE
NORTHWEST FLOW ALOFT. THE BEST CHANCES OF SEEING ANY PRECIPITATION
TODAY WILL BE OVER THE SOUTHERN PART OF THE FORECAST AREA.
HOWEVER...THE CHANCES OF ANY ORGANIZED SEVERE WEATHER REMAINS VERY
LOW.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

UPPER LEVEL HIGH PRESSURE WILL BE CENTERED OVER THE WESTERN HIGH
PLAINS WEDNESDAY MORNING RESULTING IN A BROAD NORTHWEST FLOW ALOFT
OVER THE MID SOUTH. SEVERAL WEAK DISTURBANCES WILL MOVE THROUGH THE
FLOW RESULTING IN ISOLATED SHOWERS AND THUNDERSTORMS THROUGH THE END
OF THE WORK WEEK AS THE HIGH PRESSURE SHIFTS EAST. THE BEST CHANCES
OF RAIN WILL REMAIN OVER THE SOUTHWEST WITH THE POSSIBILITY OF
SEVERE WEATHER REMAINING LOW.

OVER THE WEEKEND...THE PATTERN ALOFT WILL TRANSITION AND UPPER FLOW
FROM THE SOUTHWEST WILL DOMINATE AS A DEEP AREA OF LOW PRESSURE
DEVELOPS OVER THE WEST. SEVERAL UPPER LEVEL DISTURBANCES WILL MOVE
THROUGH THE PREVAILING FLOW KEEPING SHOWERS AND THUNDERSTORMS IN THE
FORECAST. ONCE AGAIN...ORGANIZED SEVERE WEATHER IS NOT EXPECTED.

EARLY NEXT WEEK...A COLD FRONT WILL MOVE INTO NORTHWEST ARKANSAS
AND SLOW DOWN CONSIDERABLY AS IT RUNS INTO UPPER LEVEL HIGH PRESSURE
OVER THE SOUTHEAST UNITED STATES. WITH PLENTY OF GULF MOISTURE IN
PLACE...LOCALLY HEAVY RAIN REMAINS A DISTINCT POSSIBILITY AND THE
SITUATION WILL NEED TO BE MONITORED. SEVERE WEATHER POSSIBILITIES
WILL ALSO NEED TO BE WATCHED ON MONDAY AS WELL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

&&

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

56

In the hours before

Special weather statement, Apr 10, 2:33 PM CDT, 4 hours 32 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
233 PM CDT TUE APR 10 2012

ARZ052-102020-
PIKE AR-
233 PM CDT TUE APR 10 2012

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN PIKE COUNTY UNTIL 315 PM
CDT...

AT 228 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 3 MILES SOUTHWEST OF BEACON HILL PICNIC AREA...OR
5 MILES NORTHWEST OF MURFREESBORO...MOVING SOUTHEAST AT 15 MPH.

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

* LOCATIONS IMPACTED INCLUDE...
  MURFREESBORO...       NARROWS DAM...        HIGHLAND...
  CRATER OF DIAMONDS SP...                    ROY...
  PISGAH...             NATHAN...             DELIGHT...
  BILLSTOWN...          STELLTOWN...
  RIVERSIDE PICNIC AREA...                    PINEY GROVE...
  PIKEVILLE REC AREA... PARKER CREEK REC AREA...
  NARROWS DAM REC AREA...                     MT MORIAH...
  LAUREL CREEK REC AREA...                    COOLEYVILLE...

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

LAT...LON 3417 9383 3417 9382 3422 9375 3397 9337
      3395 9337 3395 9342 3396 9347 3394 9352
      3396 9361 3398 9365 3400 9375 3400 9382
      3407 9384
TIME...MOT...LOC 1933Z 328DEG 11KT 3410 9375

44
Special weather statement, Apr 10, 2:54 PM CDT, 4 hours 11 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
254 PM CDT TUE APR 10 2012

ARZ053-102040-
CLARK AR-
254 PM CDT TUE APR 10 2012

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN CLARK COUNTY UNTIL 345
PM CDT...

AT 249 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 2 MILES NORTHWEST OF SHILOH...OR 9 MILES
SOUTHWEST OF ARKADELPHIA...MOVING SOUTHEAST AT 15 MPH.

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

* LOCATIONS IMPACTED INCLUDE...
  WHELEN SPRINGS...     RICHWOODS...          OKOLONA...
  GURDON...             BEIRNE...             VADEN...
  HOLLYWOOD...          GUM SPRINGS...        TRACE...
  SYCAMORE...           SMYRNA...             SMITHTON...
  SHILOH...             SHAKERTOWN...         RED SPRINGS...
  MCGILL FORD...        LOVE CREEK...         KANSAS...

THIS INCLUDES INTERSTATE 30 BETWEEN MILE MARKERS 57 AND 71.

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

LAT...LON 3379 9307 3378 9311 3403 9339 3417 9318
      3392 9292 3386 9290 3384 9287 3383 9290
      3381 9290 3382 9293 3378 9300 3377 9304
TIME...MOT...LOC 1954Z 321DEG 14KT 3404 9319

44
Special weather statement, Apr 10, 4:29 PM CDT, 2 hours 36 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
429 PM CDT TUE APR 10 2012

ARZ052-102215-
PIKE AR-
429 PM CDT TUE APR 10 2012

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL PIKE COUNTY UNTIL 515 PM
CDT...

AT 426 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 5 MILES SOUTHWEST OF PARKER CREEK REC AREA...OR 6
MILES NORTHWEST OF MURFREESBORO...MOVING SOUTHEAST AT 20 MPH.

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

* LOCATIONS IMPACTED INCLUDE...
  MURFREESBORO...       HIGHLAND...
  CRATER OF DIAMONDS SP...                    ROY...
  NATHAN...             PARKER CREEK REC AREA...
  COOLEYVILLE...

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

LAT...LON 3417 9382 3419 9375 3396 9360 3401 9382
TIME...MOT...LOC 2129Z 334DEG 10KT 3410 9379

59
Local storm report, Apr 10, 5:40 PM CDT, 1 hour 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
540 PM CDT TUE APR 10 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0528 PM     HAIL             MURFREESBORO            34.06N 93.69W
04/10/2012  E1.00 INCH       PIKE               AR   LAW ENFORCEMENT

            1 INCH HAIL FALLING AT THE SHERIFF OFFICE IN
            MURFRESSBORO.

0536 PM     HAIL             3 E MURFREESBORO        34.06N 93.64W
04/10/2012  E1.00 INCH       PIKE               AR   TRAINED SPOTTER

            1 INCH TO NEAR 2 INCH HAIL FELL AROUND MURFREESBORO.

&&

59
Local storm report, Apr 10, 6:07 PM CDT, 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
607 PM CDT TUE APR 10 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0600 PM     HAIL             DELIGHT                 34.03N 93.51W
04/10/2012  E1.00 INCH       PIKE               AR   PUBLIC

&&

58
Local storm report, Apr 10, 6:43 PM CDT, 22 minutes before
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Nearby

Severe Thunderstorm Warnings in Arkansas, 2012Every severe thunderstorm warning in 2012

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.