Severe Thunderstorm Warning 779, NWS Little Rock, AR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LITTLE ROCK AR
350 PM CDT SUN AUG 7 2011

.SHORT TERM...TONIGHT THROUGH WEDNESDAY NIGHT

MCV SLIDING EWD ACRS CNTRL AR THIS AFTN CAUSED SCTD STORMS TO DVLP
THIS AFTN. ONE STORM PASSED OVR THE LIT AIRPORT AND PRODUCED A WIND
GUST TO 77 MPH /SECOND HIGHEST WIND GUST ON RECORD/. EXPECT THESE
STORMS TO CONT INTO THE EVENING HRS...WITH DOWNBURST WINDS THE MAIN
THREAT. WL MAKE A LAST MINUTE CALL REGARDING POPS THIS EVENING BASED
ON RADAR TRENDS.

MODELS CONT TO INDC A CHG IN THE WEATHER PATTERN IN THE COMING DAYS.
THE UPR RDG WL SLOLY SHIFT WWD...ALLOWING NWLY FLOW ALOFT TO SET UP
ACRS THE REGION. A CDFNT TO DROP SWD INTO AR LATE TUE AND EVENTUALLY
STALL OUT OVR THE AREA. COMBO OF A SERIES OF IMPULSES ALOFT...ALONG
WITH FNTL BNDRY...WL KEEP SCTD CONVECTION IN THE FCST AS SEVERAL
CONVECTIVE COMPLEXES DROP SEWD AND AFFECT PARTS OF THE FA. THE
MODELS ARE INDCG DIFFERING SOLUTIONS WITH THE PLACEMENT OF THE BNDRY
LATE IN THE PD...SO DID NOT PINDOWN PRECIP TIMING ATTM AND WL SEE
HOW THINGS PLAY OUT.

THE LOCATION OF THE FNT WL ALSO PLAY HAVOC WITH TEMPS...ESP TUE AND
WED. TRENDED HIGHS CLOSER TO NORMAL BY MIDWEEK ACRS THE NERN PART OF
THE FA...AND A FEW DEGREES COOLER EACH DAY ELSEWHERE. KEPT THE HEAT
ADVY AS IS FOR MON OVR ALL BUT N-CNTRL AR. PARTS OF SRN AR COULD SEE
HEAT INDICES APCH ADVY CRITERIA TUE AND POSSIBLY WED...BUT WL HOLD
OFF EXTENSIONS ATTM.
&&

.LONG TERM...THURSDAY THROUGH SUNDAY

VERY FEW CHANGES MADE TO LONG TERM FCST TODAY AS MODELS REMAIN
CONSISTENT ON NW FLOW ALOFT PUSHING DISTURBANCES THROUGH NRN AR
INITIALLY. THE MODELS ARE HINTING AT A COLD FRONT PUSHING INTO AND
POSSIBLY EVEN THROUGH THE STATE OVER THE WEEKEND. THE ECMWF WANTS TO
SHOVE THE FRONT ALL THE WAY TO THE GULF COAST WITH THE HELP OF NRLY
FLOW ALOFT. THOUGH MOST ARKANSANS WOULD WELCOME THIS...AM HESITANT
TO BITE ON THIS SOLUTION YET. THE MORE LIKELY SOLUTION ADVERTISED BY
THE MORE CONSISTENT GFS HAS THE FRONT STALLING ACROSS THE STATE OVER
THE WEEKEND. THEREFORE...A SLIGHT CHC OF STORMS WILL BE EXTENDED
THROUGH THE REMAINDER OF THE WEEKEND.

HAVE STAYED CLOSE TO MEX GUIDANCE FOR TEMPS...WHICH ARE IN GENERAL
WITHIN 5 DEGREES OF NORMAL.
&&

.LZK WATCHES/WARNINGS/ADVISORIES...
HEAT ADVISORY UNTIL 9 PM CDT MONDAY FOR ARKANSAS-BRADLEY-CALHOUN-
CLARK-CLEVELAND-CONWAY-DALLAS-DESHA-DREW-FAULKNER-GARLAND-GRANT-
HOT SPRING-INDEPENDENCE-JACKSON-JEFFERSON-JOHNSON-LINCOLN-LOGAN-
LONOKE-MONROE-MONTGOMERY-OUACHITA-PERRY-PIKE-POLK-POPE-PRAIRIE-
PULASKI-SALINE-SCOTT-WHITE-WOODRUFF-YELL.

HEAT ADVISORY UNTIL 9 PM CDT THIS EVENING FOR BAXTER-BOONE-
CLEBURNE-FULTON-IZARD-MARION-NEWTON-SEARCY-SHARP-STONE-VAN BUREN.
&&

SHORT TERM...44 / LONG TERM...63

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
415 AM CDT SUN AUG 7 2011

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-081000-
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-
415 AM CDT SUN AUG 7 2011

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

.DAY ONE...TODAY AND TONIGHT

DANGEROUS HEAT WILL AGAIN PERSIST FOR TODAY AS HIGH TEMPERATURES
WARM TO THE UPPER 90S TO AROUND 107 ACROSS THE AREA. HUMIDITY
LEVELS WILL ALSO REMAIN HIGH...WITH HEAT INDICES EXPECTED TO TO
RANGE FROM 105 TO 114 DEGREES FOR MANY LOCATIONS.

A HEAT ADVISORY REMAINS IN EFFECT FOR TODAY. PEOPLE NEED TO TAKE THE
HEAT SERIOUSLY. HEAT IS THE NUMBER ONE WEATHER RELATED KILLER IN THE
UNITED STATES.

SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON. ANY
STORM THAT DOES FORM COULD BECOME STRONG TO SEVERE...WITH DAMAGING
WINDS THE MAIN THREAT. THE BEST CHANCES FOR STORMS WILL BE ACROSS
THE NORTHEAST HALF OF THE STATE...THOUGH ISOLATED STORMS COULD
FORM FURTHER SOUTH.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A HEAT ADVISORY WILL REMAIN IN EFFECT FOR A LARGE PORTION OF
THE AREA ON MONDAY AS TEMPERATURES REMAIN IN THE UPPER 90S TO
AROUND 106...AND AFTERNOON HEAT INDICES RANGE FROM 105 TO 114
DEGREES.

THE UPPER LEVEL HIGH PRESSURE RESPONSIBLE FOR THE EXCESSIVE HEAT
OVER THE PAST SEVERAL DAYS WILL SHIFT SLOWLY SOUTHWEST IN THE
COMING DAYS. AS THIS UPPER LEVEL HIGH SHIFTS SOUTHWEST... A COLD
FRONT WILL SLIDE SOUTH INTO ARKANSAS BY THE MIDDLE OF NEXT WEEK
AND STALL. THIS WILL KEEP CHANCES FOR SCATTERED SHOWERS AND
THUNDERSTORMS IN THE FORECAST FOR AT LEAST SOME PORTION OF THE
STATE THROUGH THE END OF NEXT WEEK. AS A RESULT OF INCREASED RAIN
CHANCES...THE THREAT FOR THE EXCESSIVE HEAT WILL SLOWLY DECREASE
OVER TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

&&

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

62

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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
257 PM CDT SUN AUG 7 2011

ARZ043-044-072040-
PULASKI AR-SALINE AR-
257 PM CDT SUN AUG 7 2011

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN SALINE AND CENTRAL
PULASKI COUNTIES UNTIL 345 PM CDT...

AT 254 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR COLLEGEVILLE...OR NEAR BRYANT.  THIS STORM
WAS NEARLY STATIONARY.

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

* LOCATIONS IMPACTED INCLUDE...
  SW LITTLE ROCK...     BRYANT...             BENTON...
  SHANNON HILLS...      OTTER CREEK...        MABELVALE...
  HURRICANE LAKE...     GEYER SPRINGS...      WOODLAND HILLS...
  VIMY RIDGE...         SHAW...               SARDIS...
  PARKERS-IRON SPGS...  EAST END...           CONGO...
  CAMMACK VILLAGE...    BAUXITE...            BASELINE...

THIS INCLUDES INTERSTATE 30 BETWEEN MILE MARKERS 118 AND 136.

THIS INCLUDES INTERSTATE 430 BETWEEN MILE MARKERS 1 AND 7.

THIS INCLUDES INTERSTATE 530 BETWEEN MILE MARKERS 7 AND 11.

THIS INCLUDES INTERSTATE 630 BETWEEN MILE MARKERS 3 AND 7.

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

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...TURN AROUND DONT DROWN!

LAT...LON 3478 9233 3455 9225 3449 9255 3469 9262
TIME...MOT...LOC 1957Z 255DEG 2KT 3463 9246

BJS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
319 PM CDT SUN AUG 07 2011

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

0148 PM     TSTM WND DMG     BRYANT                  34.61N 92.49W
08/07/2011                   SALINE             AR   LAW ENFORCEMENT

            A LARGE LIMB FELL ON A CAR ON ARKANSAS 5...DAMAGING THE
            CAR.

0240 PM     TSTM WND GST     BENTON                  34.57N 92.58W
08/07/2011  E70 MPH          SALINE             AR   TRAINED SPOTTER

            POWER LINES WERE BLOWN DOWN.

&&

28

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
344 PM CDT SUN AUG 7 2011

ARZ045-055>057-062>064-072130-
ARKANSAS AR-CLEVELAND AR-DALLAS AR-GRANT AR-JEFFERSON AR-LINCOLN
AR-LONOKE AR-
344 PM CDT SUN AUG 7 2011

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN LONOKE...NORTHWESTERN
LINCOLN...JEFFERSON...SOUTHERN GRANT...EASTERN DALLAS...NORTHERN
CLEVELAND AND WESTERN ARKANSAS COUNTIES UNTIL 430 PM CDT...

AT 342 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A CLUSTER OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 5
MILES SOUTHWEST OF RYAN TO LOCK AND DAM NUMBER 4 TO NEAR
CARTHAGE...AND MOVING SOUTHEAST AT 15 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
POSSIBLE WITH THESE STORMS...THOUGH HEAVY RAIN AND DANGEROUS...NEAR
CONTINUOUS LIGHTNING ARE THE MAIN THREATS WITH THIS CLUSTER.

* LOCATIONS IMPACTED INCLUDE...
  RISON...              PINE BLUFF...         GRAYS LAKE...
  WOODVILLE...          WHITEFIELD...         WHITE HALL...
  WARBRITTON...         RICHARDSON...         MADDING...
  LINWOOD...            LEOLA...              LAMONT...
  LAKE PINE BLUFF...    KEDRON...             HUMPHREY...
  COTTONDALE...         CARTHAGE...           ALTHEIMER...

THIS INCLUDES INTERSTATE 530 BETWEEN MILE MARKERS 31 AND 46.

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

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

LAT...LON 3439 9159 3406 9171 3386 9253 3412 9274
      3434 9201 3464 9192
TIME...MOT...LOC 2043Z 320DEG 14KT 3448 9186 3425 9189
          3408 9256

BJS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
345 PM CDT SUN AUG 07 2011

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

0230 PM     HAIL             FURLOW                  34.83N 91.98W
08/07/2011  E1.00 INCH       LONOKE             AR   LAW ENFORCEMENT

0230 PM     TSTM WND GST     FURLOW                  34.83N 91.98W
08/07/2011  E65.00 MPH       LONOKE             AR   LAW ENFORCEMENT

&&

57