Severe Thunderstorm Warning 485, NWS Jackson, MS

000 
WWUS54 KJAN 220157
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
855 PM CDT THU JUL 21 2005

LAC025-220205-
/O.EXP.KJAN.SV.W.0485.000000T0000Z-050722T0200Z/
CATAHOULA LA-
855 PM CDT THU JUL 21 2005

...THE SEVERE THUNDERSTORM WARNING FOR CATAHOULA PARISH EXPIRES AT
900 PM CDT...

AT 855 PM...STRONG THUNDERSTORMS WERE 2 MILES NORTH OF HARRISONBURG 
AND JUST WEST OF JONESVILLE...BOTH MOVING SOUTH AT 15 MPH. FREQUENT 
CLOUD TO GROUND LIGHTNING AND TORRENTIAL RAINS OF ONE TO TWO INCHES 
CAN BE EXPECTED THROUGH 10 PM AS THESE STORMS GRADUALLY WEAKEN. 

LAT...LON 3188 9177 3193 9183 3199 9189 3193 9190
      3193 9200 3170 9200 3170 9177

$$

40

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE JACKSON MS
725 PM CDT THU JUL 21 2005

.DISCUSSION...
DID A QUICK UPDATE TO ADJUST THIS EVENING/S FORECAST TO CURRENT
MESOSCALE/RADAR TRENDS. A LOOSELY ORGANIZED CLUSTER OF THUNDERSTORMS
WHICH BEGAN EARLIER THIS AFTERNOON IN ARKANSAS IS NOW PUSHING
GENERALLY SOUTH ALONG AND WEST OF THE AXIS OF THE MS RIVER. OUTFLOW
FROM THIS CONVECTION SEEMS TO BE OUTPACING THE PRECIP A BIT IN SOME
AREAS AND THIS BOUNDARY COULD MAKE IT TO NEAR THE NATCHEZ TRACE
CORRIDOR IN SOME FASHION WITHIN THE NEXT FEW HOURS. THERE STILL
EXISTS A FAIR AMOUNT OF LOW LEVEL INSTABILITY OVER AREAS ALONG AND
WEST OF THE TRACE CORRIDOR...SO BOUNDARIES WILL STILL HAVE A CHANCE
TO SPUR AT LEAST ISOLATED CONVECTION FOR THE NEXT FEW HOURS. BUT
INSTABILITY IS IN SHORTER SUPPLY FURTHER EAST WHERE COPIOUS AMOUNTS
OF LATE-DAY CONVECTION HAVE WORKED THE ATMOSPHERE OVER PRETTY GOOD.
HOWEVER...SOME LIGHT RAIN MAY CONTINUE TO FALL OVER PORTIONS OF
EXTREME SOUTHEAST MS IN THE FORECAST AREA FOR THE NEXT HOUR OR
SO...AS THE SOURCE CONVECTION UPSTREAM IN LA PERSISTS.

I ANTICIPATE ALL THE CONVECTION WILL BE DONE BY MIDNIGHT AND POPS
WERE DROPPED INTO THE 10 RANGE OR LESS AFTER THAT POINT. THE REST OF
THE 1ST PERIOD FORECAST LOOKS PRETTY GOOD WITH ONLY VERY MINOR
UPDATES MADE. WILL PROBABLY HAVE TO DO ONE MORE UPDATE THIS EVENING
TO CHASE CLOUD COVER AND CONVECTIVE TRENDS AS ACTIVITY WINDS DOWN.

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...HEAT ADVISORY UNTIL 7 PM FRIDAY FOR MSZ018-MSZ019-MSZ025-MSZ026-
     MSZ027-MSZ028-MSZ034-MSZ035-MSZ036-MSZ040-MSZ041-MSZ042-
     MSZ047.

     EXCESSIVE HEAT WATCH FROM 7 PM FRIDAY TO 4 PM SUNDAY FOR MSZ018-
     MSZ019-MSZ025-MSZ026-MSZ027-MSZ028-MSZ034-MSZ035-MSZ036-
     MSZ040-MSZ041-MSZ042-MSZ047.

LA...EXCESSIVE HEAT WATCH FROM 7 PM FRIDAY TO 4 PM SUNDAY FOR LAZ007-
     LAZ008-LAZ009-LAZ015-LAZ016-LAZ023-LAZ025.

     HEAT ADVISORY UNTIL 7 PM FRIDAY FOR LAZ007-LAZ008-LAZ009-LAZ015-
     LAZ016-LAZ023-LAZ025.

AR...EXCESSIVE HEAT WATCH FROM 7 PM FRIDAY TO 4 PM SUNDAY FOR ARZ074-
     ARZ075.

     HEAT ADVISORY UNTIL 7 PM FRIDAY FOR ARZ074-ARZ075.

&&

50

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
413 PM CDT THU JUL 21 2005

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
222113-
ADAMS-ASHLEY-ATTALA-BOLIVAR-CARROLL-CATAHOULA-CHICOT-CHOCTAW-
CLAIBORNE-CLARKE-CLAY-CONCORDIA-COPIAH-COVINGTON-EAST CARROLL-
FORREST-FRANKLIN LA-FRANKLIN MS-GRENADA-HINDS-HOLMES-HUMPHREYS-
ISSAQUENA-JASPER-JEFFERSON-JEFFERSON DAVIS-JONES-KEMPER-LAMAR-
LAUDERDALE-LAWRENCE-LEAKE-LEFLORE-LINCOLN-LOWNDES-MADISON LA-
MADISON MS-MARION-MONTGOMERY-MOREHOUSE-NESHOBA-NEWTON-NOXUBEE-
OKTIBBEHA-RANKIN-RICHLAND-SCOTT-SHARKEY-SIMPSON-SMITH-SUNFLOWER-
TENSAS-WARREN-WASHINGTON-WEBSTER-WEST CARROLL-WINSTON-YAZOO-
413 PM CDT THU JUL 21 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI...
NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS

.DAY ONE...TONIGHT AND FRIDAY...

...THUNDERSTORMS...
NUMEROUS SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS MOST OF
THE FORECAST AREA THROUGH 7 PM. DUE TO INCREASED LEVELS OF
INSTABILITY...SOME STORMS MAY BE ON THE STRONG SIDE. STRONG WIND
GUSTS BETWEEN 35 AND 50 MPH AND FREQUENT LIGHTNING WILL BE THE
MAIN CONCERN WITH ANY STRONG THUNDERSTORM.

...SEASONAL THREATS...
A HEAT ADVISORY IS IN EFFECT TONIGHT AND THROUGH FRIDAY. A VERY
WARM AIRMASS WILL CONTINUE TO MOVE INTO PORTIONS OF EXTREME
SOUTHEAST ARKANSAS...NORTHEAST LOUISIANA...AND NORTHWEST
MISSISSIPPI
OVER THE NEXT FEW DAYS. AT THE SAME TIME THIS REGION WILL STAY
VERY
HUMID WITH DEWPOINTS REMAINING IN THE MID TO UPPER 70S. THIS WILL
KEEP MORNING LOWS TOMORROW AND INTO SUNDAY AROUND THE UPPER 70S.
ALSO
WITH THE HIGH HUMIDITY THIS WILL BRING DANGEROUS HEAT INDICES IN
THE
AFTERNOON TO NEAR A 110 DEGREES.

.DAYS TWO THROUGH SEVEN...FRIDAY NIGHT THROUGH THURSDAY...

...DAYS TWO AND THREE...FRIDAY NIGHT THROUGH SUNDAY NIGHT...
AN EXCESSIVE HEAT WATCH IS IN EFFECT FOR THE WEEKEND ACROSS THE
NORTHWEST PORTION OF THE FORECAST AREA AS DANGEROUS HEAT MAY
AFFECT THE ARKLAMISS REGION. HIGH HUMIDITY WILL COMBINE WITH
TEMPERATURES IN THE UPPER 90S TO PRODUCE AFTERNOON HEAT INDICES
NEAR 110 IN THE AREA MAINLY NORTHWEST OF A GRENADA MISSISSIPPI TO
ST JOSEPH LINE. OVERNIGHT LOW TEMPERATURES IN THE UPPER 70S WILL
BRING LITTLE RELIEF TO THIS AREA. STAY TUNED FOR UPDATES
CONCERNING THIS POTENTIALLY DANGEROUS EXCESSIVE HEAT EVENT.

THERE IS ALSO THE SLIGHT CHANCE OF STRONG AND POSSIBLY SEVERE
THUNDERSTORMS SATURDAY AFTERNOON AS A POTENT DISTURBANCE MOVES
OUT OF NORTHERN ALABAMA AND CLASHES WITH THE VERY WARM AIRMASS
OVER PORTIONS OF MISSISSIPPI. AT THIS TIME...AREAS ALONG AND
SOUTH OF THE NATCHEZ TRACE WILL HAVE THE BEST POTENTIAL TO SEE
STRONG THUNDERSTORMS.

...DAYS FOUR THROUGH SEVEN...SUNDAY NIGHT THROUGH THURSDAY...
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER CALL TO ACTION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL...IN SUPPORT OF SEVERE WEATHER
OPERATIONS...IS NOT ANTICIPATED THROUGH NEXT THURSDAY.

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.SRH.NOAA.GOV/JAN. THIS INCLUDES THE GRAPHICAL HAZARDOUS
WEATHER OUTLOOK.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
628 PM CDT THU JUL 21 2005

MSZ034-220045-
WASHINGTON-
628 PM CDT THU JUL 21 2005

...STRONG THUNDERSTORMS MOVING ACROSS WASHINGTON COUNTY THROUGH
   8 PM...

AT 630 PM CDT...RADAR INDICATED SEVERAL INTENSE THUNDERSTORMS
PRODUCING FREQUENT CLOUD TO GROUND LIGHTNING STRIKES AND HEAVY
RAINFALL...JUST SOUTHEAST OF LAKE WASHINGTON...4 MILES EAST OF
HOLLANDALE...AND BETWEEN GREENVILLE...STONEVILLE AND ARCOLA...ALL
MOVING EAST AT 15 MPH. THESE STORMS WILL PRODUCE RAINFALL RATES UP
TO 2 INCHES PER HOUR CAUSING RAPID PONDING OF WATER AND BRIEF
GUSTS OF WIND UP TO 45 MPH WHICH MAY DOWN SMALL LIMBS.

STAY TUNED FOR FURTHER UPDATES FROM THE NATIONAL WEATHER SERVICE IN
JACKSON.

50

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
636 PM CDT THU JUL 21 2005

ARZ074-LAZ007-220045-
ASHLEY-MOREHOUSE-
636 PM CDT THU JUL 21 2005

...STRONG THUNDERSTORMS MOVING ACROSS ASHLEY COUNTY INTO
   NORTHEAST MOREHOUSE PARISH THROUGH 8 PM...

AT 635PM CDT...RADAR INDICATED SEVERAL INTENSE THUNDERSTORMS
PRODUCING FREQUENT CLOUD TO GROUND LIGHTNING STRIKES AND HEAVY
RAINFALL...FROM WILMOT TO BONITA MOVING SOUTHEAST AT 15 MPH. THESE
STORMS WILL PRODUCE RAINFALL RATES UP TO 2 INCHES PER HOUR CAUSING
RAPID PONDING OF WATER AND BRIEF GUSTS OF WIND UP TO 45 MPH WHICH MAY
DOWN SMALL LIMBS.

STAY TUNED FOR FURTHER UPDATES FROM THE NATIONAL WEATHER SERVICE IN
JACKSON.

50

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
658 PM CDT THU JUL 21 2005

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

0406 PM     TSTM WND DMG     SANFORD                 31.49N 89.43W
07/21/2005                   COVINGTON          MS   LAW ENFORCEMENT

            SEVERAL TREES REPORTED DOWN AROUND SANFORD.

0530 PM     TSTM WND DMG     GUNNISON                33.94N 90.95W
07/21/2005                   BOLIVAR            MS   EMERGENCY MNGR

            DOWNTOWN GUNNISON HAD NUMEROUS TREE DOWN BLOCKING MAIN
            STREET.

0548 PM     TSTM WND DMG     SHELBY                  33.95N 90.77W
07/21/2005                   BOLIVAR            MS   EMERGENCY MNGR

            STORAGE BUILDING DESTROYED ON 138 BLUE CANE ROAD.

0554 PM     TSTM WND DMG     CLEVELAND               33.74N 90.73W
07/21/2005                   BOLIVAR            MS   EMERGENCY MNGR

            INTERSECTION OF NORTH BAYOU AND MAGNITE ROAD HAD A LARGE
            TREE WITH POWER LINES DOWN. LARGE TREE REPORTED IN THE
            MIDDLE OF THE STREET ON 1000 UNIVERSITY AVENUE.

&&

WESTER

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
739 PM CDT THU JUL 21 2005

LAZ008-009-MSZ040-041-220150-
EAST CARROLL-ISSAQUENA-SHARKEY-WEST CARROLL-
739 PM CDT THU JUL 21 2005

...STRONG THUNDERSTORMS MOVING ACROSS THE LOWER DELTA
   THROUGH 9 PM...

AT 735PM CDT...RADAR INDICATED SEVERAL INTENSE THUNDERSTORMS
PRODUCING FREQUENT CLOUD TO GROUND LIGHTNING STRIKES AND HEAVY
RAINFALL...FROM NEAR ANGUILLA AND ROLLING FORK TO MAYERSVILLE TO OAK
GROVE LOUISIANA...MOVING SOUTHEAST AT 15 MPH. THESE STORMS WILL
PRODUCE RAINFALL RATES UP TO 2 INCHES PER HOUR CAUSING RAPID PONDING
OF WATER AND BRIEF GUSTS OF WIND UP TO 45 MPH WHICH MAY DOWN SMALL
LIMBS...ESPECIALLY IN THE LAKE PROVIDENCE TO HIGHLAND AREAS.

STAY TUNED FOR FURTHER UPDATES FROM THE NATIONAL WEATHER SERVICE IN
JACKSON.

40