Alert archive / Arkansas / Flash Flood Warnings in 2012

Flash Flood Warning 32, NWS Little Rock, AR

September 1, 20124 counties in Arkansas

NWS Little Rock, AR issued this flash flood warning at Sep 1, 2012, 6:44 PM CDT for 4 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: Sep 1, 2012, 6:44 PM CDT (23:44 UTC)
Expired: Sep 1, 2012, 9:30 PM CDT
In force: 3 hr
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Flood severity: None

Counties Monroe County, AR, Prairie County, AR, White County, AR, Woodruff County, AR

The radar

The Little Rock radar (KLZK), 81 km from the middle of the area, began a volume at 23:45 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 12:00Z, 11.7 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: 1827 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 551 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -58 m²/s²
0-3 km storm-relative helicity: -2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

478 
WGUS54 KLZK 012344
FFWLZK
ARC095-117-145-147-020230-
/O.NEW.KLZK.FF.W.0032.120901T2344Z-120902T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
644 PM CDT SAT SEP 1 2012

THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL MONROE COUNTY IN EASTERN ARKANSAS...
  NORTHERN PRAIRIE COUNTY IN CENTRAL ARKANSAS...
  SOUTHERN WHITE COUNTY IN CENTRAL ARKANSAS...
  SOUTHERN WOODRUFF COUNTY IN EASTERN ARKANSAS...

* UNTIL 930 PM CDT

* AT 642 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  SCATTERED THUNDERSTORMS DEVELOPING AND MOVING OVER THE SAME AREAS  
  FROM BEEBE TO DES ARC AND COTTON PLANT. THESE AREAS RECENTLY       
  RECEIVED EXCESSIVE RAIN WITH THE REMNANTS OF HURRICANE ISAAC...AND
  THE GROUND IS NEARLY SATURATED. ANY ADDITIONAL HEAVY RAIN WILL     
  LIKELY CAUSE FLASH FLOODING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  DES ARC...            THURMAN...            MCRAE...
  HUNTER...             GEORGETOWN...         BEEBE...
  ZENT...               WALKER...             VINITY CORNER...
  MCCLELLAND...         JASMINE...            HOWELL...
  HILLEMAN...           HICKORY PLAINS...     HAYLEY...
  GRIFFITHVILLE...      GARNER...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. TURN
AROUND... DONT DROWN!

&&

LAT...LON 3499 9114 3492 9114 3496 9180 3504 9181
      3504 9195 3515 9201 3513 9104 3505 9103
      3500 9103

$$

46

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 Sep 1, 3:23 PM CDT, 3 hours 21 minutes earlier.

Area forecast discussion, Sep 1, 3:23 PM CDT, 3 hours 21 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LITTLE ROCK AR
323 PM CDT SAT SEP 1 2012

.SHORT TERM...TONIGHT THROUGH WEDNESDAY
THE REMNANTS OF HURRICANE ISAAC WERE OVER EASTERN MISSOURI LATE
THIS AFTERNOON. SURROUNDING THE SYSTEM...THERE WILL BE AT LEAST
ONE MORE ROUND OF THUNDERSTORMS...AND THAT WILL BE THIS EVENING.
SOME OF THE STORMS COULD BE SEVERE FROM NORTHEAST THROUGH CENTRAL
ARKANSAS.

THE SYSTEM WILL DEPART FOR THE OHIO VALLEY TUESDAY/WEDNESDAY. AT
THE SAME TIME...HIGH PRESSURE WILL NUDGE INTO THE REGION FROM
THE SOUTHERN PLAINS. UNDER THE HIGH...RAIN CHANCES WILL DECREASE...
AND IT WILL FEEL VERY MUCH LIKE SUMMER WITH AT/ABOVE NORMAL
TEMPERATURES.

AS THE PERIOD ENDS...THE HIGH WILL BEGIN RETROGRADING. A NORTHWEST
WIND FLOW ALOFT WILL DRIVE A NEW COLD TOWARD THE REGION...AND THAT
WILL PLAY A ROLE IN THE EXTENDED PERIOD.
&&

.LONG TERM...WEDNESDAY NIGHT THROUGH SATURDAY
UNSETTLED WEATHER WILL BE ACROSS THE REGION IN THE LONG TERM. A WEAK
FRONTAL BOUNDARY WILL MOVE INTO THE AREA AND STALL OUT. THIS WILL
KEEP SMALL RAIN CHANCES IN THE FORECAST...AS SEVERAL WAVES MOVE
ALONG THE FRONT. MODELS ARE IN GOOD AGREEMENT WITH TROUGH MOVING
INTO THE REGION SATURDAY...BRINGING BETTER CHANCES OF RAINFALL FOR
THE END OF THE LONG TERM.
&&

.PRELIMINARY POINT TEMPS/POPS...
BATESVILLE AR     74  91  72  94 /  40  20  10  10
CAMDEN AR         76  96  77  98 /  30  10  10  10
HARRISON AR       69  90  70  94 /  20  10  10  10
HOT SPRINGS AR    75  96  76  98 /  40  10  10  10
LITTLE ROCK   AR  75  95  76  97 /  50  10  10  10
MONTICELLO AR     76  94  77  95 /  30  10  10  10
MOUNT IDA AR      74  96  75  97 /  30  10  10  10
MOUNTAIN HOME AR  70  90  70  94 /  30  20  10  10
NEWPORT AR        75  91  73  93 /  50  30  20  10
PINE BLUFF AR     75  94  75  95 /  40  10  10  10
RUSSELLVILLE AR   73  97  74  98 /  20  10  10  10
SEARCY AR         74  93  73  94 /  50  20  20  10
STUTTGART AR      75  93  74  94 /  50  10  10  10
&&

.LZK WATCHES/WARNINGS/ADVISORIES...NONE.
&&

SHORT TERM...46 / LONG TERM...58

Hazardous weather outlook, Sep 1, 4:45 PM CDT, 1 hour 59 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LITTLE ROCK AR
445 PM CDT SAT SEP 1 2012

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-021000-
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-
4455 PM CDT SAT SEP 1 2012

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

THE REMNANTS OF HURRICANE ISAAC ARE NOW OVER CENTRAL MISSOURI.
HOWEVER...TROPICAL MOISTURE REMAINS ACROSS THE NATURAL STATE AND AS
ISAAC CONTINUES TO MOVE ACROSS MISSOURI...ANOTHER ROUND OF SHOWERS
AND THUNDERSTORMS HAS DEVELOPED OVER ARKANSAS. A TORNADO WATCH IS
IN EFFECT FOR PARTS OF CENTRAL AND EASTERN ARKANSAS THROUGH LATE
EVENING.

STRONG TO SEVERE THUNDERSTORMS WILL REMAIN POSSIBLE THIS EVENING
WITH THE BEST CHANCES ACROSS CENTRAL AND EAST CENTRAL PORTIONS OF
THE COUNTY WARNING AREA. SEVERE WEATHER CHANCES WILL BE GREATEST
ALONG A LINE FROM JONESBORO...TO NEWPORT...TO LITTLE ROCK AND
CONWAY. THE MAIN THREAT AT THIS TIME IS STRONG DAMAGING WINDS.
HOWEVER...ISOLATED TORNADOES WILL BE POSSIBLE...AS STRONG WIND
ENERGY REMAINS ACROSS THE REGION DUE TO THE REMNANTS OF HURRICANE
ISAAC.

WITH THE SOUPY AIR MASS SITTING OVER THE STATE...ANY STORM WILL BE
CAPABLE OF PRODUCING BRIEF HEAVY RAIN. ANY ADDITIONAL HEAVY RAINFALL
FROM THUNDERSTORMS WOULD LEAD TO LOCALIZED FLASH FLOODING ESPECIALLY
IN AREAS THAT SAW THE VERY HEAVY RAINFALL THE PAST 2 DAYS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THE THREAT FOR WIDESPREAD SEVERE WEATHER IS EXPECTED TO REMAIN LOW
NEXT WEEK. HOWEVER...MOISTURE LEVELS HAVE INCREASED OVER THE PAST
FEW DAYS AS A RESULT OF WIDESPREAD RAINFALL. AFTERNOON TEMPERATURES
ARE EXPECTED TO WARM BACK INTO THE MID AND EVEN SOME UPPER 90S
ACROSS THE AREA THROUGH THE MIDDLE OF NEXT WEEK. AS A RESULT...HEAT
INDICES COULD RISE TO NEAR OR JUST ABOVE 100 DEGREES SUNDAY...MONDAY
AND TUESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND
EVENING...ESPECIALLY AREAS NORTHEAST OF LITTLE ROCK.

&&

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

56

In the hours before

Local storm report, Sep 1, 5:14 PM CDT, 1 hour 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
514 PM CDT SAT SEP 01 2012

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

0458 PM     TSTM WND DMG     CONWAY                  35.09N 92.45W
09/01/2012                   FAULKNER           AR   TRAINED SPOTTER

            MULTIPLE TREES ARE DOWN IN AND AROUND THE CONWAY AREA.
            SEVERAL TREES ARE DOWN ACROSS SOUTHERN PORTIONS OF
            FAULKNER COUNTY INCLUDING THE AREA OF HAMLET.

0411 PM     TSTM WND DMG     VILONIA                 35.08N 92.21W
09/01/2012                   FAULKNER           AR   TRAINED SPOTTER

            TREES ARE DOWN IN THE VILNOIA AREA. SEVERAL POWER LINES
            ARE ALSO DOWN.

&&

MCLAY

Local storm report, Sep 1, 5:18 PM CDT, 1 hour 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
518 PM CDT SAT SEP 01 2012

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

0507 PM     TSTM WND DMG     NEWPORT                 35.63N 91.24W
09/01/2012                   JACKSON            AR   LAW ENFORCEMENT

            LARGE TRESS LIMBS WERE BLOWN DOWN IN THE NEWPORT AREA. A
            CABLE LINE WAS ALSO BLOWN DOWN.

&&

MCLAY

Local storm report, Sep 1, 5:34 PM CDT, 1 hour 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
534 PM CDT SAT SEP 01 2012

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

0533 PM     TSTM WND DMG     BENTON                  34.57N 92.58W
09/01/2012                   SALINE             AR   TRAINED SPOTTER

            TEREES ARE DOWN IN BENTON.

&&

MCLAY

Local storm report, Sep 1, 5:42 PM CDT, 1 hour 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
542 PM CDT SAT SEP 01 2012

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

0524 PM     TSTM WND DMG     GEORGETOWN              35.13N 91.45W
09/01/2012                   WHITE              AR   CO-OP OBSERVER

            SEVERAL TREES ARE DOWN IN GEORGETOWN. ONE TREE FELL ON A
            VEHICLE THAT WAS UNOCCUPIED.

&&

MCLAY

Local storm report, Sep 1, 5:54 PM CDT, 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
554 PM CDT SAT SEP 01 2012

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

0554 PM     TSTM WND DMG     BRYANT                  34.61N 92.49W
09/01/2012                   SALINE             AR   PUBLIC

            ROOF DAMAGE IN BRYANT. SEVERAL LARGE TREES HAVE BEEN
            SNAPPED OR FALLEN.

&&

MCLAY

Local storm report, Sep 1, 6:18 PM CDT, 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
618 PM CDT SAT SEP 01 2012

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

0554 PM     TSTM WND DMG     1 NW BRYANT             34.62N 92.50W
09/01/2012                   SALINE             AR   TRAINED SPOTTER

            SHINGLES WERE BLOWN OFF OF A HOUSE IN THE COMMUNITY OF
            SALEM JUST NORTHWEST OF BRYANT.

&&

MCLAY

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 31, 7:02 PM CDT	Tornado Warning	LZK	Arkansas, Jefferson, Lincoln	28 min
Sep 1, 2:31 PM CDT	River Flood Warning	LZK	Jackson, Woodruff	17 days
Sep 1, 3:51 PM CDT	Special Weather Statement	LZK	Faulkner	29 min
Sep 1, 3:54 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner, White	36 min
Sep 1, 4:15 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner, Lonoke, White	30 min
Sep 1, 4:21 PM CDT	Severe Thunderstorm Warning	LZK	Independence, Jackson	14 min
Sep 1, 4:40 PM CDT	Special Weather Statement	LZK	White	30 min
Sep 1, 4:47 PM CDT	Special Weather Statement	LZK	Woodruff	33 min
Sep 1, 4:51 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner	24 min
Sep 1, 4:52 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Prairie, White, Woodruff	38 min
Sep 1, 4:56 PM CDT	Severe Thunderstorm Warning	LZK	Jackson	34 min
Sep 1, 5:06 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Hot Spring, Saline	39 min
Sep 1, 5:13 PM CDT	Severe Thunderstorm Warning	LZK	Pulaski, Saline	47 min
Sep 1, 5:21 PM CDT	Severe Thunderstorm Warning	LZK	Woodruff	39 min
Sep 1, 5:23 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Prairie, Pulaski, White	52 min
Sep 1, 5:45 PM CDT	Severe Thunderstorm Warning	LZK	Monroe, Prairie, Woodruff	45 min
Sep 1, 5:45 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Hot Spring	45 min
Sep 1, 5:49 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Grant, Hot Spring, Saline	41 min
Sep 1, 5:57 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Montgomery	48 min
Sep 1, 6:02 PM CDT	Severe Thunderstorm Warning	LZK	Grant, Pulaski, Saline	43 min
Sep 1, 6:27 PM CDT	Severe Thunderstorm Warning	LZK	Monroe, Prairie, Woodruff	33 min
Sep 1, 6:29 PM CDT	Severe Thunderstorm Warning	LZK	Jefferson, Lonoke, Pulaski	46 min
Sep 1, 6:31 PM CDT	Severe Thunderstorm Warning	LZK	Grant, Hot Spring, Jefferson, Saline	44 min
Sep 1, 6:36 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Prairie, White, Woodruff	39 min
Sep 1, 6:41 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Grant, Hot Spring, Saline	34 min
Sep 1, 6:55 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Jefferson, Lincoln	50 min
Sep 1, 6:58 PM CDT	Flash Flood Warning	LZK	Grant, Hot Spring, Jefferson	3 hr

Nearby

Flash Flood Warnings in Arkansas, 2012 Every flash flood 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.