...6TH WETTEST SEPTEMBER AT GREENWOOD...

THIS IS THE MONTHLY CLIMATE SUMMARY FOR SEPTEMBER 2012.

TEMPERATURE INFORMATION...
MONTHLY AVERAGE TEMPERATURES WERE NEAR NORMAL ACROSS THE NWS JACKSON 
FORECAST AREA. MEAN TEMPERATURE DEPARTURES AT AREA ASOS SITES RANGED 
FROM 1 DEGREE BELOW NORMAL AT MERIDIAN TO 0.9 DEGREES ABOVE NORMAL 
AT GREENVILLE. THE MONTH GOT OFF TO A WARM START WITH DAILY AVERAGE 
TEMPERATURES AS MUCH AS 10 DEGREES ABOVE NORMAL OVER THE FIRST 7 TO 
8 DAYS OF THE MONTH. DURING THIS TIME PERIOD...SEVERAL HIGH MINIMUM 
TEMPERATURE RECORDS WERE SET EACH MORNING. A COLD FRONT BROUGHT 
BELOW NORMAL TEMPERATURES FROM THE 8TH THROUGH THE 12TH. THIS WAS 
FOLLOWED BY A BRIEF WARMUP AROUND THE MIDDLE OF THE MONTH. YET 
ANOTHER COLD FRONT BROUGHT A REINFORCING SHOT OF COLD AIR...WITH 
BELOW NORMAL TEMPERATURES FROM THE 17TH THROUGH THE 21ST. OVER THE 
LAST WEEK OF SEPTEMBER...TEMPERATURES FLUCTUATED BETWEEN NEAR AND 
SLIGHTLY ABOVE NORMAL READINGS.

THE ONE MONTH TEMPERATURE OUTLOOK FOR OCTOBER INDICATES GREATER 
CHANCES FOR BELOW NORMAL TEMPERATURES THAN FOR NEAR OR ABOVE NORMAL 
TEMPERATURES FOR THE ENTIRE NWS JACKSON FORECAST AREA. THE THREE 
MONTH TEMPERATURE OUTLOOK FOR OCTOBER THROUGH DECEMBER INDICATES 
GREATER CHANCES FOR ABOVE NORMAL TEMPERATURES THAN FOR NEAR OR BELOW 
NORMAL TEMPERATURES ALONG THE HIGHWAY 82 CORRIDOR. ACROSS THE 
REMAINDER OF THE AREA...THERE IS LOW PREDICTABILITY AND THUS EQUAL 
CHANCES FOR ABOVE NORMAL...NORMAL...OR BELOW NORMAL TEMPERATURES. 


PRECIPITATION INFORMATION...
FOR THE SECOND MONTH IN A ROW...PRECIPITATION WAS WELL ABOVE NORMAL 
ACROSS MUCH OF THE AREA. AT AREA ASOS SITES...MONTHLY RAINFALL 
DEPARTURES RANGED FROM 0.19 INCHES ABOVE NORMAL AT MERIDIAN TO 3.18 
INCHES ABOVE NORMAL AT GREENWOOD. IN A FEW LOCATIONS ACROSS THE 
ARKLAMISS DELTA...DEPARTURES WERE AS MUCH AS 5 INCHES ABOVE NORMAL 
FOR THE MONTH. IT WAS THE 6TH WETTEST SEPTEMBER ON RECORD AT 
GREENWOOD AND THE 10TH WETTEST SEPTEMBER ON RECORD AT GREENVILLE.


BELOW ARE THE WETTEST SEPTEMBERS FOR THE FOLLOWING SITES...

  GREENWOOD        GREENVILLE 
1. 19.56 (1958)  1. 15.19 (1958)  
2. 11.04 (2009)  2. 12.07 (2008)
3. 7.57 (2002)   3. 9.52 (1968)
4. 7.25 (1989)   4. 8.40 (2009)
5. 7.10 (2007)   5. 7.26 (1934)
6. 6.84 (2012)   6. 6.89 (2005)
                 7. 6.66 (1921)
                 8. 6.32 (1945)
                    6.32 (1932)
                10. 6.06 (2012)


THANKS TO CONTINUED ABOVE NORMAL PRECIPITATION IN SEPTEMBER...THE 
LATEST U.S. DROUGHT MONITOR INDICATES THAT THE REMAINING DROUGHT 
CONDITIONS HAVE IMPROVED ACROSS NORTHWESTERN PORTIONS OF THE AREA. 
MODERATE DROUGHT NOW ONLY COVERS A SMALL PORTION OF WESTERN ASHLEY 
COUNTY ARKANSAS AND NORTHWEST MOREHOUSE PARISH LOUISIANA. 
SURROUNDING THIS...ABNORMALLY DRY CONDITIONS COVER THE REMAINDER OF 
SOUTHEAST ARKANSAS...A SMALL AREA OF FAR NORTHEAST LOUISIANA...AND 
NORTHERN PORTIONS OF BOLIVAR AND SUNFLOWER COUNTIES IN MISSISSIPPI. 
THE LATEST DROUGHT OUTLOOK INDICATES ADDITIONAL IMPROVEMENT IS 
EXPECTED THROUGH THE REMAINDER OF THE YEAR. 

THE ONE MONTH PRECIPITATION OUTLOOK FOR OCTOBER INDICATES LOW 
PREDICTABILITY ACROSS THE NWS JACKSON FORECAST AREA. THUS THERE ARE 
EQUAL CHANCES FOR ABOVE NORMAL...NORMAL...AND BELOW NORMAL 
TEMPERATURES. THE THREE MONTH PRECIPITATION OUTLOOK FOR OCTOBER 
THROUGH DECEMBER INDICATES GREATER CHANCES FOR ABOVE NORMAL 
PRECIPITATION THAN FOR NEAR OR BELOW NORMAL PRECIPITATION ACROSS THE 
NWS JACKSON FORECAST AREA. THE PROBABILITY FOR ABOVE NORMAL 
PRECIPITATION IS GREATEST ACROSS THE SOUTHERN HALF OF THE AREA.


SIGNIFICANT WEATHER EVENTS...
AFTER A RATHER ACTIVE AUGUST...SEPTEMBER WAS MUCH QUIETER IN TERMS 
OF SEVERE WEATHER. LATE ON THE EVENING OF THE 3RD AND CONTINUING 
INTO THE EARLY MORNING HOURS OF THE 4TH...A WEAK FRONT AND SOME 
LINGERING UPPER LEVEL ENERGY FROM TROPICAL CYCLONE ISAAC SPARKED OFF 
ISOLATED SEVERE STORMS. THESE STORMS CAUSED A FEW INSTANCES OF 
DAMAGING WINDS AND FLASH FLOODING NEAR THE GOLDEN TRIANGLE AREA. 
ADDITIONAL ISOLATED SEVERE STORMS DEVELOPED ON THE AFTERNOON OF THE 
4TH...BRINGING A FEW REPORTS OF LARGE HAIL AND WIND DAMAGE IN 
SOUTHEAST MISSISSIPPI.

BEYOND THE 4TH...THERE WERE NO ADDITIONAL SEVERE WEATHER REPORTS 
UNTIL THE LAST DAY OF THE MONTH. A LOW PRESSURE SYSTEM TRACKING 
ALONG THE GULF COAST BROUGHT HEAVY RAINFALL AND GUSTY WINDS TO MUCH 
OF THE REGION. FLOODING WAS REPORTED IN PORTIONS OF WASHINGTON... 
SUNFLOWER...LEFLORE...GRENADA...WARREN...AND FRANKLIN COUNTIES IN 
MISSISSIPPI. WITH THE SOIL VERY SATURATED ACROSS THE AREA...GUSTY 
WINDS ACTUALLY KNOCKED DOWN MULTIPLE TREES...ESPECIALLY IN NORTHWEST 
MISSISSIPPI.


NEWLY ESTABLISHED RECORDS...

DATE    SITE    RECORD TYPE     NEW RECORD   PREV RECORD(DATE) 

1ST     KGLH    HIGH MIN TEMP   78           77(1951,1952)
1ST     KGWO    HIGH MIN TEMP   76 (TIE)     76(2008)
1ST     KTVR    HIGH MIN TEMP   76 (TIE)     76(2008)
2ND     KGLH    HIGH MIN TEMP   77 (TIE)     77(1947,2008)
2ND     KHBG    HIGH MIN TEMP   77           75(1989,2008)
2ND     KTVR    HIGH MIN TEMP   75 (TIE)     75(1995,2008)
3RD     KGLH    HIGH MIN TEMP   79           77(1936)
3RD     KGWO    HIGH MIN TEMP   77 (TIE)     77(2008)
3RD     KJAN    HIGH MIN TEMP   77           76(1993,2008)
3RD     KTVR    HIGH MIN TEMP   78           76(1989)
4TH     KGLH    HIGH MIN TEMP   78           77(1936,1972)
4TH     KHBG    HIGH MIN TEMP   75 (TIE)     75(2008)
4TH     KJAN    HIGH MIN TEMP   77           74(1899,1944,1970)
4TH     KMEI    HIGH MIN TEMP   75 (TIE)     75(2008)
4TH     KTVR    HIGH MIN TEMP   77           74(1970)
5TH     KJAN    HIGH MIN TEMP   79           77(2000)
6TH     KGLH    HIGH MIN TEMP   77           76(1939,1947,1990)
6TH     KJAN    HIGH MIN TEMP   77           76(1973)
7TH     KHBG    HIGH MIN TEMP   75 (TIE)     75(1970)
20TH    KGWO    LOW MIN TEMP    46 (TIE)     46(1981)
20TH    KTVR    LOW MIN TEMP    45 (TIE)     45(1981)
30TH    KGLH    DAILY RAINFALL  3.48         1.75(1934)
30TH    KGWO    DAILY RAINFALL  4.95         3.49(1985)
30TH    KTVR    DAILY RAINFALL  2.30         1.89(1985)


NOTES...

ALL DATA ABOVE ARE PRELIMINARY AND HAVE NOT UNDERGONE FINAL QUALITY 
CONTROL BY THE NATIONAL CLIMATIC DATA CENTER (NCDC). THEREFORE... 
THESE DATA ARE SUBJECT TO REVISION. FINAL AND CERTIFIED DATA CAN BE 
ACCESSED AT THE NCDC WEBPAGE - HTTP://WWW.NCDC.NOAA.GOV (ALL LOWER 
CASE).

TEMPERATURE/PRECIPITATION NORMALS ARE BASED ON THE 1981-2010 
CLIMATOLOGICAL PERIOD. DATA ARE PROVIDED BY NCDC.

FOR ADDITIONAL LOCAL CLIMATE INFORMATION PLEASE VISIT THE NWS 
JACKSON CLIMATE ZONE AT: 
HTTP://WWW.WEATHER.GOV/JAN/?N=CLIMATE_ZONE_STATION_LIST 
(ALL LOWER-CASE)

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