Flash Flood Warning 6, NWS Huntsville, AL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HUNTSVILLE AL
246 PM CDT SAT APR 24 2010

.DISCUSSION...STRONG/LOCALLY SVR CONVECTION CONTINUES ACROSS MUCH OF
THE SE REGION THIS AFTERNOON...UNDER A STRONGLY SHEARED ENVIRONMENT.
THE DEGREE OF SFC BASED INSTABILITY THOUGH...ALONG WITH A FAIRLY
STRONG CAP BELOW H7...LOOKS TO BE THE DECISIVE FACTORS WHETHER THIS
CONVECTION HAS TRENDED BETTER/MORE ORGANIZED. THE BRUNT OF THIS
ACTIVITY THUS FAR HAS REMAINED JUST BELOW SVR THRESHOLDS. WHILE
THERE REMAINS SOME UNCERTAINTY OVER HOW MUCH AIR MASS DESTABILIZATION
IS ABLE TO DEVELOP OVER THE NEXT FEW HRS...STRONG LL INFLOW COUPLED
WITH A FEW LINGERING HRS OF SFC BASED HEATING MAY STILL ALLOW FOR
SOME ORGANIZED SVR/TORNADIC STORMS ACROSS THE AREA...THROUGH THE
REMAINING AFTERNOON AND EARLY EVENING PERIODS. CURRENT TOR WATCH IN
EFFECT RUNS THROUGH 02Z SUN/9 PM CST. EVEN IF THE SVR WX/TORNADIC
THREAT FAILS TO MATERIALIZE...STRONG DIFFLUENT PATTERN IN PLACE
ALOFT WILL ALLOW FOR SOME TRAINING OF CONVECTIVE BANDS INTO THE
EVENINGS HRS...LEADING TO A LOCALIZED THREAT OF FLASH FLOODING.

SVR WX/FLASH FLOODING THREAT SHOULD BEGIN TO TAPER OFF TOWARD THE E
AFTER MIDNIGHT AS THE COLD FRONT BEGINS TO SWEEP EWD THROUGH THE
FORECAST AREA. POTENT UPPER TROUGH/SHRTWV OVER THE MID PLAINS STATES
SHOULD BEGIN TO LIFT INTO THE OH VALLEY OVERNIGHT AND INTO SUN AS IT
DEAMPLIFIES...HELPING TO LIMIT FURTHER PRECIP CHANCES OTHER THAN
SOME ISOLATED SHOWERS. CONDITIONS THOUGH MAY BE SLOW TO CLR THROUGH
THE WEEKEND PERIOD AND INTO NEXT WEEK WITH THE AREA REMAINING UNDER
A SWLY FETCH REGIME. WEAK HIGH PRESSURE OUT OF THE PLAINS STATES
WILL EVENTUALLY BEGIN TO SETTLE INTO THE SE REGION PAST TUE...WITH
OVERALL TEMPS HOVERING NEAR SEASONAL TRENDS.

GOING PAST MID WEEK...HIGH PRESSURE WILL BEGIN TO SHIFT EWD TOWARD
THE SRN ATLANTIC BASIN ALLOWING FOR A GRADUAL WARMING TREND. THE
LATTER HALF OF THE GFS SOLUTION STILL POINTS TOWARD ANOTHER SFC
BOUNDARY MOVING INTO THE SE REGION FRI AND SAT. WILL AT LEAST
CONTINUE/MAINTAIN THE TREND OF RAIN CHANCES RETURNING TO THE
FORECAST HEADING INTO NEXT WEEKEND.
&&

.PRELIMINARY POINT TEMPS/POPS...
HUNTSVILLE    61  79  56  69  49 /  70  10  20  20  10
SHOALS        60  78  56  70  49 /  50  10  20  10  10
VINEMONT      60  76  54  67  48 /  70  10  10  10  10
FAYETTEVILLE  59  76  54  66  47 /  70  10  20  20  10
ALBERTVILLE   61  78  56  68  50 /  90  10  10  20  10
FORT PAYNE    59  77  54  67  45 / 100  10  20  20  10
&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...NONE.
TN...NONE.
&&

09

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
535 PM CDT SAT APR 24 2010

ALZ001>010-016-TNZ076-096-097-251100-
LAUDERDALE-COLBERT-FRANKLIN
AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-MARSHALL-JACKSON-DEKALB-CULLMAN-
MOORE-LINCOLN-FRANKLIN TN-
535 PM CDT SAT APR 24 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS
OF SOUTHERN MIDDLE TENNESSEE.

.DAY ONE...TONIGHT...

A LINE THUNDERSTORMS WILL CONTINUE TO PUSH EASTWARD ACROSS THE
TENNESSEE VALLEY THIS EVENING. THE THREAT FOR DAMAGING WIND
GUSTS...LARGE HAIL...AND AN ISOLATED TORNADO WILL CONTINUE FOR AREAS
EAST OF INTERSTATE 65 THROUGH 9 PM TONIGHT. THOUGH THE THREAT FOR
SEVERE WEATHER HAS DIMINISHED GREATLY FOR AREAS WEST OF INTERSTATE
65...CHANCES FOR SEVERE STORMS WILL REMAIN UNTIL THE COLD FRONT
PUSHES THROUGH THE AREA LATE TONIGHT.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER CALL TO ACTION STATEMENT...

ONGOING ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT
PERSONNEL WILL BE NEEDED THROUGH THIS EVENING.

CA/MA

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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
434 PM CDT SAT APR 24 2010

ALZ005-006-242200-
LIMESTONE-MADISON-
434 PM CDT SAT APR 24 2010

...SIGNIFICANT WEATHER ADVISORY FOR LIMESTONE AND WESTERN MADISON
COUNTIES UNTIL 500 PM CDT...

AT 434 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR DECATUR...MOVING NORTHEAST AT 55 MPH.

PENNY SIZE HAIL...WINDS UP TO 50 MPH...AND HEAVY DOWNPOURS ARE
EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  FRENCH MILL...MADISON.
  CAPSHAW...HOLLAND GIN.
  HARVEST...TONEY.
  GLADSTONE...ELKWOOD.
  FISK...HAZEL GREEN.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL
TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS
CONCERNING THIS WEATHER SITUATION.

&&

LAT...LON 3497 8632 3471 8668 3460 8691 3465 8702
      3467 8708 3470 8711 3499 8690
TIME...MOT...LOC 2134Z 228DEG 56KT 3470 8694

DJN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
451 PM CDT SAT APR 24 2010

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

0108 PM     TSTM WND DMG     5 E WRIGHT              34.90N 87.90W
04/24/2010                   LAUDERDALE         AL   EMERGENCY MNGR

            TREES DOWN AT MILE MARKER 336 ON THE NATCHEZ TRACE PKWY.

0224 PM     TSTM WND DMG     3 NE WATERLOO           34.95N 88.03W
04/24/2010                   LAUDERDALE         AL   EMERGENCY MNGR

            TREES DOWN ON COUNTY ROAD 1.

0246 PM     TSTM WND DMG     3 NW GREEN HILL         35.00N 87.55W
04/24/2010                   LAUDERDALE         AL   EMERGENCY MNGR

            TREES DOWN ALONG COUNTY ROAD 36 NEAR GREEN HILL.

0349 PM     TSTM WND DMG     KILLEN                  34.86N 87.53W
04/24/2010                   LAUDERDALE         AL   EMERGENCY MNGR

            TREES DOWN ALONG J.C. MAULDIN HWY IN KILLEN.

&&

AMIN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
517 PM CDT SAT APR 24 2010

ALZ006-009-TNZ097-242300-
FRANKLIN-JACKSON-MADISON-
517 PM CDT SAT APR 24 2010

...SIGNIFICANT WEATHER ADVISORY FOR FRANKLIN TENNESSEE...JACKSON AND
MADISON COUNTIES UNTIL 600 PM CDT...

AT 517 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM HUNTLAND TO DEPOSIT
TO PRICEVILLE...MOVING NORTHEAST AT 55 MPH.

PEA SIZE HAIL...HEAVY RAIN AND WINDS UP TO 50 MPH ARE EXPECTED WITH
THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  WINCHESTER...DECHERD.
  WOODS RESERVOIR...LARKIN.
  ALTO...LARKIN.
  ST. ANDREWS...PRINCETON.
  SHERWOOD...HOLLYTREE.

THE GUSTY WINDS WILL BE CAPABLE OF KNOCKING DOWN SMALL TREES...TREE
LIMBS...AND POWERLINES. SEEK SAFE SHELTER UNTIL THE STORM HAS PASSED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SATURDAY EVENING
FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.

&&

LAT...LON 3530 8592 3523 8589 3523 8586 3499 8587
      3458 8597 3458 8615 3461 8614 3461 8632
      3459 8629 3457 8656 3459 8661 3457 8667
      3459 8671 3457 8677 3500 8638 3500 8631
      3511 8631 3533 8624
TIME...MOT...LOC 2217Z 241DEG 50KT 3512 8622 3484 8639
          3455 8675

DJN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
520 PM CDT SAT APR 24 2010

ALZ004-007-016-242300-
CULLMAN-LAWRENCE-MORGAN-
520 PM CDT SAT APR 24 2010

...SIGNIFICANT WEATHER ADVISORY FOR MORGAN...NORTHERN CULLMAN...AND
SOUTHEASTERN LAWRENCE COUNTIES UNTIL 600 PM CDT...

AT 519 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A CLUSTER OF STRONG THUNDERSTORMS IN NORTHEASTERN WINSTON COUNTY...
MOVING NORTHEAST AT 50 MPH.

PEA SIZE HAIL...WINDS UP TO 50 MPH...AND FREQUENT CLOUD TO GROUND
LIGHTNING ARE EXPECTED WITH THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  JONES CHAPEL...LOGAN.
  BATTLEGROUND...MASSEY.
  LACON...FALKVILLE.
  COLE SPRINGS...LEESDALE.
  EVA...SOMERVILLE.

THESE THUNDERSTORMS COULD INTENSIFY QUICKLY...SO BE READY TO ACT IF
A WARNING IS ISSUED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SATURDAY EVENING
FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.

&&

LAT...LON 3430 8712 3431 8731 3457 8684 3455 8675
      3459 8671 3459 8668 3455 8665 3459 8661
      3458 8657 3456 8655 3441 8658 3431 8658
      3431 8650 3427 8649 3409 8711
TIME...MOT...LOC 2219Z 245DEG 49KT 3424 8717

BCC