Alert archive / Arkansas / Flash Flood Warnings in 2011

Flash Flood Warning 97, NWS Little Rock, AR

May 20, 20115 counties in Arkansas

NWS Little Rock, AR issued this flash flood warning at May 20, 2011, 7:01 PM CDT for 5 counties in Arkansas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 20, 2011, 7:01 PM CDT (00:01 UTC)
Expired: May 20, 2011, 10:00 PM CDT
In force: 3 hr
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Flood severity: None

Counties Cleburne County, AR, Faulkner County, AR, Lonoke County, AR, Pulaski County, AR, White County, AR

The radar

The Little Rock radar (KLZK), 50 km from the middle of the area, began a volume at 00:03 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 0.0 hours before the alert went out and 196 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: 1371 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 448 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 351 m²/s²
0-3 km storm-relative helicity: 470 m²/s²
Significant tornado parameter: 3.2
Supercell composite: 19.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

687 
WGUS54 KLZK 210001
FFWLZK
ARC023-045-085-119-145-210300-
/O.NEW.KLZK.FF.W.0097.110521T0001Z-110521T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
701 PM CDT FRI MAY 20 2011

THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EXTREME NORTHWESTERN LONOKE COUNTY IN CENTRAL ARKANSAS...
  FAULKNER COUNTY IN CENTRAL ARKANSAS...
  NORTH CENTRAL PULASKI COUNTY IN CENTRAL ARKANSAS...
  SOUTH CENTRAL CLEBURNE COUNTY IN NORTH CENTRAL ARKANSAS...
  WESTERN WHITE COUNTY IN CENTRAL ARKANSAS...

* UNTIL 1000 PM CDT

* AT 700 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
  AREA OF THUNDERSTORMS WITH VERY HEAVY RAINFALL ALONG A LINE        
  EXTENDING FROM 14 MILES WEST OF SEARCY OR AT GRAVEL HILL TO 4      
  MILES EAST OF CONWAY. DOPPLER RADAR INDICATES 1 TO 3 INCHES OF     
  RAIN HAVE ALREADY FALLEN OVER PARTS OF THE WARNED AREA WITH        
  ADDITIONAL HEAVY RAIN EXPECTED. FLASH FLOODING IS LIKELY TO OCCUR. 
  WHILE PRECIPITATION MAY TAPER OFF IN SOME AREAS DURING THE WARNING 
  PERIOD...IT WILL TAKE SOME TIME FOR ANY HIGH WATER TO RUNOFF.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  LAKE CONWAY...        VILONIA...            SPRINGHILL...
  ROSE BUD...           PICKLES GAP...        MT VERNON...
  GREENBRIER...         GRAVEL HILL...        ENOLA...
  CROSBY...             SALTILLO...           ROMANCE...
  OTTO...               LETONA...             JOY...
  HOPEWELL...           HOLLAND...            HAMLET...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

&&

LAT...LON 3515 9175 3491 9240 3526 9245 3524 9213
      3539 9212 3543 9200 3533 9201 3539 9180

$$

225

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at May 20, 4:06 PM CDT, 2 hours 55 minutes earlier.

Area forecast discussion, May 20, 4:06 PM CDT, 2 hours 55 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LITTLE ROCK AR
406 PM CDT FRI MAY 20 2011

.SHORT TERM...TONIGHT THROUGH SUNDAY NIGHT
SHOWERS AND THUNDERSTORMS BECAME WIDESPREAD ACROSS THE NORTHERN
HALF OF ARKANSAS THIS AFTERNOON. ANOTHER CLUSTER OF STORMS WAS
FORMING IN SOUTHEAST OKLAHOMA/NORTHEAST TEXAS...AND THIS WILL
BUILD INTO THE STATE OVERNIGHT.

WITH AREAS OF HEAVY RAIN ALREADY IN THE NORTH...AND MORE RAIN INTO
THIS EVENING...A FLASH FLOOD WATCH REMAINS IN EFFECT ACROSS MUCH
OF NORTHERN ARKANSAS OVERNIGHT.

SOUTHERN SECTIONS OF THE STATE HAVE BEEN MOSTLY DRY THIS AFTERNOON.
SHOULD HAVE SOME PRECIPITATION IN THE SOUTH TONIGHT...ALTHOUGH IT
WILL LIKELY BE MORE SCATTERED.

THE WEATHER PATTERN WILL FEATURE A RIDGE OF HIGH PRESSURE OVER THE
SOUTHEAST UNITED STATES IN THE COMING DAYS. A COLD FRONT WILL TRY
TO HEAD INTO THE REGION FROM THE PLAINS...BUT WILL ENCOUNTER THE
RIDGE AND STALL.

CHANCES FOR SHOWERS AND THUNDERSTORMS WILL CONTINUE SURROUNDING
THE FRONT THIS WEEKEND. STORMS WILL GENERALLY BE HIT AND
MISS...WITH WIDESPREAD HEAVY RAIN NOT EXPECTED. PRECIPITATION
CHANCES WILL BE HIGHEST IN THE NORTH/WEST NEAREST THE FRONT.

TEMPERATURES THROUGH THE WEEKEND WILL BE ABOVE NORMAL.
&&

.LONG TERM...MONDAY THROUGH FRIDAY
ODEL AGREEMENT FOR THE LONG TERM HAS INCREASED A GOOD DEAL TODAY.
AS SUCH...MADE A FEW CHANGES TO THE LONG TERM FORECAST THAT FURTHER
DEFINES THE EXPECTED CONDITIONS.

STARTING OFF ON MONDAY...FRONTAL BOUNDARY WILL REMAIN STALLED JUST
TO THE NORTHWEST OF THE FORECAST AREA...STRETCHING FROM CENTRAL
OKLAHOMA UP THROUGH MISSOURI. HAVE LEFT SOME 30 PERCENT POPS IN THE
NORTHWEST...TAPERING THEM OFF TO 15-20 PERCENT ACROSS THE CENTRAL
PART OF THE STATE. REMOVED MENTION OF PRECIP FROM THE FAR SE MON
THROUGH TUE MORNING AS CONVECTION SHOULD STAY UP NORTH. LOWERED MAX
TEMPS ALONG THE MISSOURI BORDER TO AROUND 80 DEGREES FOR MON AND
TUE...WHICH MAY STILL BE TOO OPTIMISTIC...ESPECIALLY TUE...GIVEN THE
EXPECTED CLOUD COVER AND RAINFALL. THAT SAID...IT IS LATE MAY SO IT
WILL NOT TAKE MUCH TO GET INTO THE 80S.

THE FRONT WILL SLIDE INTO FAR NW ARKANSAS TUE AFTERNOON AS UPPER
WAVE PASSES OVERHEAD. BEST PRECIP CHANCES WILL REMAIN IN THE
NORTHWEST. THE MOST SIGNIFICANT SHIFT IN THE FRONTAL BOUNDARY THOUGH
WILL OCCUR ON WED AS POTENT UPPER DISTURBANCE MOVES ACROSS TEXAS AND
INTO THE LOWER MISSISSIPPI VALLEY REGION. ASSOC SFC LOW WILL DEVELOP
ALONG THE FRONT OVER ARKANSAS ON WED...THEN SHIFT INTO THE OHIO
RIVER VALLEY WED NIGHT. SURFACE FRONT WILL RESPOND ACCORDINGLY...
SHIFTING SE THROUGH ARKANSAS DURING THE DAY WED AND MOVING EAST OF
ARKANSAS BY THU MORNING. LEFT POPS SHY OF LIKELY CATEGORIES ON WED
MAINLY DUE TO THE POSSIBILITY OF A SLIGHT CHANCE IN TIMING...BUT
CONFIDENCE IS INCREASING THAT FROPA WILL OCCUR WED AFTERNOON. MIDDAY
THU ONWARD LOOKS TO BE DRY.

BEHIND THE FRONT...MORE COOL TEMPERATURES ARE EXPECTED. HIGHS ON THU
AND FRI WILL LIKELY NOT MAKE IT OUT OF THE 70S AREA WIDE.
&&

.PRELIMINARY POINT TEMPS/POPS...
BATESVILLE AR     67  83  67  83 /  70  50  30  30
CAMDEN AR         71  87  69  87 /  40  30  30  30
HARRISON AR       66  82  64  82 /  90  30  20  30
HOT SPRINGS AR    69  86  69  86 /  60  30  30  30
LITTLE ROCK   AR  69  85  69  86 /  60  50  30  30
MONTICELLO AR     71  87  70  88 /  40  40  30  30
MOUNT IDA AR      69  85  67  85 /  60  30  30  30
MOUNTAIN HOME AR  66  81  64  83 /  90  40  30  30
NEWPORT AR        68  83  67  85 /  60  50  30  30
PINE BLUFF AR     70  86  69  87 /  50  40  30  30
RUSSELLVILLE AR   68  84  66  84 /  80  40  30  30
SEARCY AR         68  84  66  86 /  60  50  30  30
STUTTGART AR      69  85  69  87 /  50  50  30  30
&&

.LZK WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH THROUGH SATURDAY MORNING FOR BAXTER-BOONE-
CLEBURNE-CONWAY-FULTON-INDEPENDENCE-IZARD-JOHNSON-LOGAN-MARION-
NEWTON-POPE-SCOTT-SEARCY-SHARP-STONE-VAN BUREN-YELL.

&&

SHORT TERM...46 / LONG TERM...64

Hazardous weather outlook, May 20, 4:01 PM CDT, 3 hours before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LITTLE ROCK AR
401 PM CDT FRI MAY 20 2011

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-211000-
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-
401 PM CDT FRI MAY 20 2011

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

.DAY ONE...TONIGHT

SHOWERS AND THUNDERSTORMS HAVE DWINDLED OVER THE SOUTHERN PARTS OF
THE FORECAST AREA THIS AFTERNOON...BUT MORE SHOULD DEVELOP LATER
THIS EVENING AND CONTINUE THROUGH THE NIGHT. IN THE NORTH...NUMEROUS
SHOWERS AND THUNDERSTORMS WERE ONGOING THIS AFTERNOON AND WILL
CONTINUE IN THOSE AREAS THROUGH THE NIGHT.

SOME STORMS MAY PRODUCE DAMAGING WINDS AND LARGE HAIL. HOWEVER...THE
MAIN THREAT IS LIKELY TO BE FLASH FLOODING. AREAS IN THE NORTH AND
NORTHWEST HAVE RECEIVED UP TO A COUPLE OF INCHES OF RAIN SO FAR
TODAY. WITH MORE SHOWERS AND THUNDERSTORMS EXPECTED TO AFFECT THE
NORTHERN HALF OF THE STATE OVERNIGHT...FLASH FLOODING WILL BE A
CONCERN. A FLASH FLOOD WATCH IS IN EFFECT FOR MUCH OF THE NORTHWEST
HALF OF THE FORECAST AREA THROUGH TOMORROW MORNING.

ADDITIONALLY...RIVER FLOODING CONTINUES ACROSS EASTERN ARKANSAS.
RIVERS HAVE CRESTED...BUT THE WATER WILL BE VERY SLOW TO RECEDE.
SOME ROADS IN EASTERN SECTIONS OF THE STATE REMAIN CLOSED.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

RIVER FLOODING WILL REMAIN AN ISSUE ACROSS EASTERN ARKANSAS
FOR THE NEXT SEVERAL DAYS.

SEVERE STORMS WILL BE POSSIBLE ONCE AGAIN ON SATURDAY ACROSS MUCH OF
THE REGION.

THIS WEEKEND...A COLD FRONT WILL LIKELY STALL TO THE NORTH AND WEST
OF ARKANSAS. STORM SYSTEMS FROM THE SOUTHWEST WILL INTERACT WITH THE
FRONT...AND THIS WILL RESULT IN SEVERAL ROUNDS OF PRECIPITATION
THROUGH THE MIDDLE OF NEXT WEEK.

IN ARKANSAS...THUNDERSTORMS WILL TEND TO BE HIT AND MISS...
AND WILL COME IN BATCHES INSTEAD OF ALL AT ONCE. TWO TO FOUR
INCH RAINFALL AMOUNTS ARE POSSIBLE IN THE NORTHERN AND WESTERN
COUNTIES NEAREST THE STALLED FRONT. THIS WILL BE SPREAD
OUT OVER SEVERAL DAYS...WHICH COULD LEAD TO RISES ON AREA
RIVERS...BUT NOT TO THE LEVELS REACHED EARLIER THIS MONTH.

IT APPEARS THE FRONT WILL FINALLY GAIN SOME MOMENTUM TO THE
SOUTHEAST BY WEDNESDAY OR THURSDAY OF NEXT WEEK. ANOTHER ROUND
OF SEVERE WEATHER AND HEAVY RAIN IS POSSIBLE...FOLLOWED BY
DRIER AND COOLER AIR.

UNCERTAINTY STILL EXISTS WITH EXACTLY HOW THIS EVENT WILL PLAY
OUT...SO STAY TUNED TO LATER FORECASTS. INDIVIDUALS ARE ENCOURAGED
TO MONITOR NATIONAL WEATHER SERVICE FORECASTS FOR THE LATEST ON
RIVER LEVELS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

&&

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

63

In the hours before

Local storm report, May 20, 6:19 PM CDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
619 PM CDT FRI MAY 20 2011

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

0617 PM     HAIL             5 NW TRASKWOOD          34.50N 92.73W
05/20/2011  E0.50 INCH       SALINE             AR   PUBLIC

            1/4 TO 1/2 INCH DIAMETER HAIL FELL AT MILE MARKER 106 ON
            INTERSTATE 30.

&&

28

Local storm report, May 20, 6:40 PM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
640 PM CDT FRI MAY 20 2011

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

0625 PM     HAIL             2 E LONSDALE            34.54N 92.78W
05/20/2011  E1.00 INCH       SALINE             AR   TRAINED SPOTTER

            QUARTER SIZED HAIL EAST OF LONSDALE ON HWY 70.

&&

225

Local storm report, May 20, 6:58 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
658 PM CDT FRI MAY 20 2011

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

0656 PM     HAIL             BRYANT                  34.61N 92.49W
05/20/2011  E0.75 INCH       SALINE             AR   AMATEUR RADIO

            WINDS TO 40 MPH OCCURRED WITH THE HAIL.

&&

28

Special weather statement, May 20, 6:58 PM CDT, 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
658 PM CDT FRI MAY 20 2011

ARZ032-043>045-210045-
FAULKNER AR-LONOKE AR-PULASKI AR-SALINE AR-
658 PM CDT FRI MAY 20 2011

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN FAULKNER...WESTERN
LONOKE...PULASKI AND EASTERN SALINE COUNTIES UNTIL 745 PM CDT...

AT 658 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 3 MILES SOUTHWEST OF SHANNON HILLS...OR NEAR
BRYANT...MOVING NORTHEAST AT 30 MPH.

HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

* LOCATIONS IMPACTED INCLUDE...
  WEST LITTLE ROCK...   SW LITTLE ROCK...     SHERWOOD...
  N LITTLE ROCK ARPT... NORTH LITTLE ROCK...  LONOKE...
  LITTLE ROCK AFB...    JACKSONVILLE...       DWNTWN LITTLE ROCK...
  LITTLE ROCK ARPT...   BRYANT...             WRIGHTSVILLE...
  TERRY LOCK AND DAM... SYLVAN HILLS...       SWEET HOME...
  SOUTH BEND...         SHANNON HILLS...      SCOTT...

THIS INCLUDES INTERSTATE 30 BETWEEN MILE MARKERS 120 AND 142.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 145 AND 174.

THIS INCLUDES INTERSTATE 530 BETWEEN MILE MARKERS 1 AND 9.

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.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

LAT...LON 3504 9217 3479 9187 3447 9246 3462 9259
TIME...MOT...LOC 2358Z 230DEG 28KT 3460 9241

62

Special weather statement, May 20, 6:59 PM CDT, 2 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
659 PM CDT FRI MAY 20 2011

ARZ037-038-041-210045-
MONTGOMERY AR-SCOTT AR-YELL AR-
659 PM CDT FRI MAY 20 2011

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN YELL...EASTERN SCOTT
AND CENTRAL MONTGOMERY COUNTIES UNTIL 745 PM CDT...

AT 659 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR NORMAN...OR 7 MILES SOUTHWEST OF MT IDA...
MOVING NORTH AT 30 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  MT IDA...             NORMAN...             MUDDY CREEK WMA...
  MIMOSA...             MAULDIN...            FOURCHE VALLEY...
  WING...               WASHITA...            STORY...
  SIMS...               PENCIL BLUFF...       NOLA...
  HURRICANE GROVE...    GRAVELLY...           GIBBS...
  CHULA...              CADDO GAP...          BRIGGSVILLE...

LAT...LON 3499 9373 3495 9343 3440 9359 3443 9381
TIME...MOT...LOC 2359Z 190DEG 28KT 3450 9368

56

Special weather statement, May 20, 7:00 PM CDT, 1 minute before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
700 PM CDT FRI MAY 20 2011

ARZ012-021-030-210045-
JOHNSON AR-LOGAN AR-NEWTON AR-
700 PM CDT FRI MAY 20 2011

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN JOHNSON...SOUTHWESTERN
NEWTON AND NORTHERN LOGAN COUNTIES UNTIL 745 PM CDT...

AT 700 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 3 MILES WEST OF HARTMAN...OR 10 MILES SOUTHEAST
OF OZARK...MOVING NORTH AT 30 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  HOYT...               HORSEHEAD LAKE...     HINKLE...
  HARTMAN...            YALE...               UNION CITY...
  ROSEVILLE...          OARK...               HUNT...
  HARMONY...            FRILEY...             FALLSVILLE...
  COAL HILL...          CATALPA...            ARBAUGH...
  WOLF PEN REC AREA...  WHITE OAK...          SIX MILE PARK...

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 45 AND 53.

LAT...LON 3538 9373 3539 9371 3577 9370 3578 9369
      3577 9353 3579 9352 3589 9352 3587 9341
      3534 9358 3537 9380 3540 9380
TIME...MOT...LOC 0000Z 190DEG 28KT 3544 9367

56

The office that day

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

Issued	Product	Office	Counties	Lasted
May 20, 7:00 PM CDT	Special Weather Statement	LZK	Johnson	45 min
May 20, 7:34 PM CDT	Areal Flood Advisory	LZK	Pulaski	3 hr
May 20, 7:38 PM CDT	Special Weather Statement	LZK	Lonoke, Pulaski	47 min
May 20, 7:51 PM CDT	Special Weather Statement	LZK	Independence	44 min
May 20, 8:10 PM CDT	Special Weather Statement	LZK	Boone	45 min
May 20, 8:25 PM CDT	Flash Flood Warning	LZK	Cleburne, Independence, Izard, Jackson, Sharp, Stone and 1 more	3 hr
May 20, 8:29 PM CDT	Flash Flood Warning	LZK	Garland, Montgomery, Yell	3 hr
May 20, 8:29 PM CDT	Special Weather Statement	LZK	White	46 min
May 20, 8:36 PM CDT	Special Weather Statement	LZK	Clark, Pike	44 min
May 20, 8:43 PM CDT	Special Weather Statement	LZK	Faulkner, Lonoke, Pulaski, Saline	47 min
May 20, 8:54 PM CDT	River Flood Advisory	LZK	Independence, Jackson	36 hr
May 20, 9:24 PM CDT	Special Weather Statement	LZK	Faulkner, White	46 min
May 20, 9:40 PM CDT	Flash Flood Warning	LZK	Faulkner, Garland, Grant, Hot Spring, Lonoke, Pulaski and 1 more	3 hr
May 20, 9:53 PM CDT	Flash Flood Warning	LZK	Cleburne, Faulkner, Lonoke, Pulaski, White	3 hr
May 20, 10:45 PM CDT	Flash Flood Warning	LZK	Johnson, Newton, Pope	3 hr
May 20, 10:59 PM CDT	Flash Flood Warning	LZK	Clark, Dallas, Garland, Grant, Hot Spring, Montgomery and 1 more	4 hr
May 20, 11:25 PM CDT	Flash Flood Warning	LZK	Cleburne, Independence, Jackson, Sharp, White, Woodruff	2 hr
May 21, 5:34 AM CDT	River Flood Warning	LZK	White	41 hr
May 21, 6:55 AM CDT	River Flood Advisory	LZK	Independence	4 hr
May 21, 7:46 AM CDT	River Flood Warning	LZK	Perry	37 hr
May 21, 9:07 AM CDT	River Flood Advisory	LZK	Randolph	24 hr
May 21, 9:16 AM CDT	River Flood Advisory	LZK	Lawrence, Randolph	24 hr
May 21, 9:20 AM CDT	River Flood Warning	LZK	Independence, Jackson	15 days
May 21, 11:02 AM CDT	River Flood Advisory	LZK	Calhoun, Ouachita	36 hr
May 21, 12:50 PM CDT	River Flood Advisory	LZK	Arkansas, Desha, Lincoln	36 hr

Nearby

Flash Flood Warnings in Arkansas, 2011 Every flash flood 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.