Severe Thunderstorm Warning 77, NWS Huntsville, AL

495 
WWUS54 KHUN 151909
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
209 PM CDT FRI APR 15 2011

ALC077-151918-
/O.EXP.KHUN.SV.W.0077.000000T0000Z-110415T1915Z/
LAUDERDALE AL-
209 PM CDT FRI APR 15 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN LAUDERDALE COUNTY
EXPIRES AT 215 PM CDT...

WEATHER SERVICE DOPPLER RADAR INDICATES THE SEVERE THUNDERSTORM THAT
PROMPTED THE WARNING HAS MOVED OUT OF THE COUNTY. THEREFORE THE
SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE.

HEAVY RAIN...SMALL HAIL...GUSTY WINDS...AND FREQUENT LIGHTNING ARE 
STILL POSSIBLE FROM ADDITIONAL THUNDERSTORMS IN THE AREA. STAY 
INDOORS UNTIL THE STORMS HAVE PASSED.

LAT...LON 3501 8793 3491 8803 3489 8809 3489 8810
      3492 8814 3500 8820 3502 8819 3502 8795
TIME...MOT...LOC 1908Z 218DEG 51KT 3511 8801

$$

70/DD

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1240 PM CDT FRI APR 15 2011

.UPDATE...FOR 18Z TAFS.

&&

.AVIATION...
MVFR TO MVFR CIGS AND VSBYS WILL CONTINUE UNTIL AROUND 6 PM AT BOTH
SITES. KHSV WILL CONTINUE TO EXPERIENCE -TSRA FOR MUCH OF THAT TIME
AS WELL. A ROUND OF STRONGER THUNDERSTORMS WILL PUSH IN DURING THE
EARLY EVENING HOURS AR BOTH SITES. THIS WILL DROP CIGS AND VSBYS
INTO THE IFR RANGE...AND POSSIBLY THE LIFR RANGE. CIGS SHOULD LIFT
AFTER 7Z AT BOTH SITES INTO THE VFR REALM.

.PREV DISCUSSION... /ISSUED 1039 AM CDT FRI APR 15 2011/

FIRST STORMS OF THE MORNING FIRED ALONG A WARM FRONT WHICH HAS
PUSHED FURTHER NORTH OVER THE LAST HOUR INTO NORTHEASTERN TN. MOST OF
THE STORM ACTIVITY IS ALONG THE PREFRONTAL TROUGH AXIS WHICH
CURRENTLY EXTENDS SSW ACROSS WESTERN MS INTO NORTHEASTERN LA. THIS
LINE OF STORMS PROMPTED THE TORNADO WATCH UNTIL 3 PM FOR
JACKSON...DEKALB...AND ALL OF OUR TENNESSEE COUNTIES. A THICK CLOUD
DECK IS IN PLACE WITH THIS ACTIVITY. SOME THINNING IS SEEN IN
SATELLITE IMAGERY OVER MORGAN...MARSHALL...AND CULLMAN COUNTIES.
MODEL GUIDANCE SHOWS THIS LINE SLOWLY WEAKENING...BUT ALSO SLOWING
DOWN THROUGH THE EARLY AFTERNOON HOURS. HOWEVER...THINK THAT
CONVERGENCE AHEAD OF THIS LINE WOULD KEEP TRAINING A LINE OF SOME
STRONG STORMS ACROSS CENTRAL PORTIONS OF NORTH CENTRAL ALABAMA DURING
THIS TIME. THIS COULD SET THE STAGE FOR SOME FLASH FLOODING LATER
THIS AFTERNOON AND EVENING...ESPECIALLY WEST OF I-65. TWO TO FOUR
INCHES OF RAINFALL LOOKS REASONABLE FOR THE EVENT FOR MUCH OF THE
AREA. AN ISOLATED SEVERE STORM IS POSSIBLE WITH THIS ACTIVITY...BUT
SMALL HAIL AND GUSTY WINDS TO AROUND 40 MPH SHOULD BE THE RULE OF
THUMB. THIS IS PRIMARILY DUE TO THE FACT THAT CONVECTION IS STILL
ELEVATED DUE TO PREVIOUS CLOUD AND STORM ACTIVITY AND THAT SURFACE
DEWPOINTS ARE STILL MAINLY IN THE MID 50S. HAVE HAD NO REPORTS OF
DAMAGE WITH ANY STORMS IN THE HUNTSVILLE FORECAST AREA SO FAR. HAVE
LOWERED TEMPERATURES DUE TO CLOUD COVER AND TWEAKED DEWPOINTS TO
REFLECT CURRENT OBSERVATIONS. ALSO...INCREASED PRECIPITATION AMOUNTS
THROUGH 1 AM. A FLASH FLOOD WATCH MAY BE NEEDED LATER...BUT WILL LOOK
AT A FEW MORE THINGS BEFORE GOING THAT ROUTE.

MODELS ARE IN SIMILAR AGREEMENT THAT A 60 TO 65 KT 850 JET WILL
REDEVELOP OVER CENTRAL AND NORTHERN ALABAMA. THIS SHOULD HELP BRING
HIGHER DEWPOINTS AND INCREASED LOW LEVEL INSTABILITY INTO THE AREA
DURING THE EARLY TO LATE AFTERNOON HOURS. AT THE SAME TIME...A
STRONG 90 TO 100 KT JET AT 500 MB WILL PUSH INTO THE AIR MASS OVER
ALABAMA WITH THE FRONT AROUND 5 OR 6 PM. THIS SHOULD PRODUCE THE MAIN
SHOW FOR SEVERE WEATHER TODAY. WITH AMPLE SHEAR IN PLACE...TORNADOES...
LARGE HAIL...AND DAMAGING WINDS WILL BE POSSIBLE. A SIGNIFICANT
TORNADO IS NOT OUT OVER THE QUESTION WITH THIS THIRD ROUND OF STORMS
FOR THE DAY. TIMING STILL LOOKS SIMILAR TO PREVIOUS DISCUSSIONS AND
BRIEFINGS...NORTHWEST ALABAMA BETWEEN 3 AND 7 PM...NORTH CENTRAL
ALABAMA BETWEEN 5 AND 9 PM...AND NORTHEAST ALABAMA BETWEEN 9 PM AND 1
AM.

&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...WIND ADVISORY UNTIL 9 PM CDT THIS EVENING FOR THE FOLLOWING ZONES:
     COLBERT...CULLMAN...DEKALB...FRANKLIN AL...JACKSON...
     LAUDERDALE...LAWRENCE...LIMESTONE...MADISON...MARSHALL...
     MORGAN.

TN...WIND ADVISORY UNTIL 9 PM CDT THIS EVENING FOR THE FOLLOWING ZONES:
     FRANKLIN TN...LINCOLN...MOORE.

&&

20

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1255 PM CDT FRI APR 15 2011

ALZ001>010-016-TNZ076-096-097-160300-
LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-
MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN-
1255 PM CDT FRI APR 15 2011

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

.DAY ONE...THIS AFTERNOON AND TONIGHT...

A LINE OF STRONG THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS
NORTHEAST ALABAMA THROUGH 2 PM. LOCALLY HEAVY RAIN...SMALL HAIL
WILL BE THE PRIMARY THREATS WITH THIS LINE OF STORMS. LOCALIZED
FLASH FLOODING DUE TO THE PERSISTENT HEAVY RAIN CAN BE EXPECTED.

LATER THIS AFTERNOON...ADDITIONAL THUNDERSTORMS ARE EXPECTED TO
IMPACT THE AREA AS A WARM FRONT...WHICH CURRENTLY EXTENDS ACROSS
CENTRAL MISSISSIPPI AND ALABAMA...MOVES NORTHEAST. SOME OF THESE
STORMS COULD BECOME SEVERE...CAPABLE OF PRODUCING LARGE HAIL...
DAMAGING WINDS AND EVEN TORNADOES. AREAS ALONG AND SOUTH OF THE
TENNESSEE RIVER RUN A HIGHER RISK OF SEEING SEVERE THUNDERSTORMS
LATER TODAY.

ESTIMATED TIMING FOR THE NEXT ROUND OF POTENTIALLY SEVERE
THUNDERSTORMS WILL BE BETWEEN 2 PM AND 5 PM ACROSS AREAS ALONG AND
WEST OF I-65 AND SOUTH OF THE TENNESSEE RIVER.

ONE FINAL ROUND OF THUNDERSTORMS WILL LIKELY OCCUR IN ASSOCIATION
WITH A STRONG COLD FRONT THAT WILL CROSS THE AREA THIS EVENING. SOME
OF THESE STORMS COULD BE STRONG TO SEVERE. THE ENTIRE SEVERE THREAT
WILL LIKELY END ACROSS NORTHWEST ALABAMA BETWEEN 9 PM AND 11 PM...
NORTH CENTRAL ALABAMA AND SOUTHERN MIDDLE TENNESSEE BETWEEN 10 PM
AND MIDNIGHT...AND NORTHEAST ALABAMA BETWEEN 11 PM AND 1 AM SATURDAY
MORNING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

ANOTHER ROUND OF STORMS IS POSSIBLE ON WEDNESDAY INTO THURSDAY OF
NEXT WEEK AS ANOTHER COLD FRONT APPROACHES THE AREA.

.SPOTTER CALL TO ACTION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS
LIKELY THIS AFTERNOON AND TONIGHT.

RSB/CCC/DJN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1245 PM CDT FRI APR 15 2011

ALZ008-151830-
MARSHALL-
1245 PM CDT FRI APR 15 2011

...SIGNIFICANT WEATHER ADVISORY FOR MARSHALL COUNTY UNTIL 130 PM
CDT...

AT 1245 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR SNEAD...OR 12 MILES SOUTH OF ARAB...MOVING
NORTHEAST AT 45 TO 50 MPH.

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

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  HYATT...HIGH POINT.
  MOUNTAIN VIEW...RABBIT TOWN.
  GUNTERSVILLE...HUSTLEVILLE.
  COLUMBUS CITY.

A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA.

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 3424 8644 3425 8644 3451 8628 3450 8612
      3442 8611 3441 8613 3440 8613 3440 8611
      3431 8610 3412 8631
TIME...MOT...LOC 1744Z 215DEG 45KT 3420 8640

70/DD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
117 PM CDT FRI APR 15 2011

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

1242 PM     HEAVY RAIN       2 WSW KILLEN            34.85N 87.56W
04/15/2011  E2.25 INCH       LAUDERDALE         AL   TRAINED SPOTTER

            2 TO 2.25 INCHES OF RAINFALL SINCE 10 AM HAS RESULTED IN
            MINOR STREET FLOODING NEAR KILLEN.

&&

DJN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
118 PM CDT FRI APR 15 2011

ALZ009-010-151900-
DE KALB-JACKSON-
118 PM CDT FRI APR 15 2011

...SIGNIFICANT WEATHER ADVISORY FOR DEKALB AND JACKSON COUNTIES UNTIL
200 PM CDT...

AT 118 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR PISGAH...OR 9 MILES EAST OF
SCOTTSBORO...MOVING NORTHEAST AT 50 TO 55 MPH.

PEA SIZE HAIL AND WINDS UP TO 50 MPH ARE EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  FLAT ROCK...FABIUS.
  HIGDON...BRIDGEPORT.
  LONG ISLAND.

REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO THE
STORM TO BE STRUCK BY LIGHTNING. SEEK SAFE SHELTER IMMEDIATELY.

&&

LAT...LON 3458 8582 3471 8598 3500 8569 3500 8561
      3497 8560 3478 8556
TIME...MOT...LOC 1818Z 226DEG 54KT 3472 8581

70/DD

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
134 PM CDT FRI APR 15 2011

ALZ001>004-152015-
LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-
INCLUDING THE CITIES OF...FLORENCE...MUSCLE SHOALS...RUSSELLVILLE...
MOULTON
134 PM CDT FRI APR 15 2011

...VERY GUSTY WINDS EXPECTED THROUGH 300 PM...

A PERIOD OF VERY GUSTY WINDS IS ANTICIPATED ON THE WESTERN EDGE OF A
LARGE RAIN AREA MOVING ACROSS NORTHWEST ALABAMA THIS AFTERNOON.
WINDS MAY GUST AS HIGH AS 50 MPH THROUGH 230 PM ACROSS
LAUDERDALE...COLBERT...FRANKLIN AND LAWRENCE COUNTIES. RESIDENTS
SHOULD BE ALERT FOR VERY GUSTY WINDS AND RAPIDLY CHANGING WIND
SPEEDS. THESE WINDS WILL BE CAPABLE OF SNAPPING LARGE LIMBS AND
POSSIBLY SMALL TREES.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
136 PM CDT FRI APR 15 2011

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

0127 AM     NON-TSTM WND DMG 3 ESE SRYGLEY CHURCH    34.59N 87.88W
04/15/2011                   COLBERT            AL   EMERGENCY MNGR

            JONES ROAD AT EVENING SHADE ROAD...TREES BLOWN INTO
            POWERLINES AND OVER ROADWAY.

&&

DJN

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
137 PM CDT FRI APR 15 2011

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

0127 PM     NON-TSTM WND DMG 3 ESE SRYGLEY CHURCH    34.59N 87.88W
04/15/2011                   COLBERT            AL   EMERGENCY MNGR

            JONES ROAD AT EVENING SHADE ROAD...TREES BLOWN INTO
            POWERLINES AND OVER ROADWAY.

&&

DJN