A cold front helped a cluster of thunderstorms to produce heavy rains over Madison county. Radar indicated that two to four inches of rain had fallen across portions of the parish.
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The episode as NWS JAN wrote it up.
A cold front helped a cluster of thunderstorms to produce heavy rains over Madison county. Radar indicated that two to four inches of rain had fallen across portions of the parish.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Jackson, MS wrote its last area forecast discussion before the first event at Jul 22, 3:00 AM CST, 3 hours 15 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSON MS 400 AM CDT WED JUL 22 2009 .SHORT TERM...TODAY THROUGH THURSDAY NIGHT...LATEST SURFACE ANALYSIS HAS A LOW CENTERED OVER WEST TENNESSEE WITH THE COLD FRONT MOVING INTO OUR NORTHWEST MOST ZONES. AHEAD OF THE COLD FRONT A RATHER NARROW BAND OF SHOWERS AND THUNDERSTORMS HAS FORMED AND WAS ALREADY EAST OF A GRANADA TO BASTROP LINE AND MOVING SOUTHEAST. WATER VAPOR IMAGERY AND THE BLENDED TPW PRODUCT INDICATE SIGNIFICANT DRYING BEHIND THIS LINE OF CONVECTION SO LITTLE ADDITIONAL PCPN DEVELOPMENT BEHIND THIS LINE IS EXPECTED. WL TAYLOR POPS THIS MORNING TO THIS LINE AND GO ABOVE GUIDANCE IN THE CENTRAL AND SOUTH WHILE CUTTING BACK IN THE NORTHWEST. MODELS AGREE THAT THE SHORTWAVE TROUGH AND SURFACE LOW OVER WEST TENNESSEE WILL LIFT OUT TO THE NORTHEAST TODAY SLOWING THE PROGRESSION SOUTHWARD OF THE COLD FRONT. IT APPEARS THAT THE FRONT WILL HAVE ENOUGH MOMENTUM TO MAKE IT INTO OUR SOUTHERN ZONES BEFORE STALLING TONIGHT. MOST OF THE PCPN ASSOCIATED WITH THE FRONT IS EXPECTED TO BE SOUTH OF INTERSTATE 20 BY NOON...ENDING RAIN CHANCES IN THE NORTH. THE LINGERING FRONTAL BOUNDARY WILL MAINTAIN LOW POPS IN OUR SOUTHERN ZONES INTO THURSDAY NIGHT. ALTHOUGH LESS AMPLIFIED...THE MEAN UPPER LEVEL PATTERN WITH RIDGING IN THE WEST AND TROUGHING IN THE EAST WL MAINTAIN NORTHWEST FLOW ALOFT OVER OUR REGION THROUGH THE PERIOD. A FEW SUBTLE DISTURBANCES EMBEDDED IN THE FLOW MAY ALSO CONTRIBUTE TO DEVELOP OF CONVECTION ALONG THE BOUNDARY IN OUR SOUTH TONIGHT AND THURSDAY. BELOW NORMAL TEMPERATURES ARE EXPECTED THROUGH THE SHORT TERM. DRIEST AIR WILL BE IN OUR NORTH WITH A PW AROUND AN INCH AND SURFACE DEW POINTS IN THE MID 60S. ALTHOUGH RECORD LOWS ARE NOT EXPECTED THIS ROUND...LOWS IN THE LOW TO MID 60S TONIGHT AND THURSDAY NIGHT IN THE NORTH WILL BE COMFORTABLE FOR LATE JULY. AFTERNOON HIGHS ARE EXPECTED IN THE MID TO UPPER 80S TODAY AND A FEW DEGREES WARMER THURSDAY AROUND 90. /22/ .LONG TERM...FRIDAY THROUGH NEXT TUESDAY...MEDIUM RANGE MODELS AND MODEL ENSEMBLES CONTINUE TO BE IN DECENT AGREEMENT ON THE EXPECTED PATTERN TO AFFECT THE LOWER MISSISSIPPI VALLEY REGION THROUGH EARLY NEXT WEEK. THROUGH THIS TIME THE OVERALL WEATHER PATTERN STILL DOES NOT SHOW MUCH SIGN OF BREAKING AWAY FROM THE WETTER AND NOT TERRIBLY HOT TREND THAT HAS BEEN REVEALING ITSELF LATELY. FRIDAYS WEATHER SHOULD BE MOSTLY DRY WITH PERHAPS THE BOUNDARY IN THE VICINITY OF MY FAR SOUTHERN ZONES MAYBE TRIGGERING A BIT OF AFTERNOON CONVECTION ALONG AND SOUTH OF HIGHWAY 84. TEMPERATURES SHOULD WARM A BIT WITH HIGHS MAINLY IN THE LOWER 90S...BUT THERE WILL PROBABLY STILL BE A FEW CLOUDS AROUND TO PROVIDE A LITTLE SHADE. NORTHWEST FLOW ALOFT SHOULD SEND ANOTHER FRONT SWEEPING DOWN INTO THE PLAINS AND MID-MS VALLEY SATURDAY AND THE 850MB TEMP RIDGE OUT AHEAD OF THIS FRONT WILL TRY TO SHOVE EAST FROM THE PLAINS AND TOWARD THE MS RIVER. THE GFS SUGGESTS THESE HIGHER TEMPS WILL ADVECT IN AND BE FELT AT THE SURFACE WITH NO PROBLEM (BRINGING HIGHS AT LEAST IN WESTERN ZONES WELL UP INTO THE 90S). HOWEVER...ENSEMBLES AND THE EUROPEAN MODEL GENERALLY KEEP THE HEAT AT BAY OUT WEST AS SCATTERED CLOUDS AND WET GROUND GENERALLY KEEP HIGHS BELOW 95 DEGREES. BUILDING DEEP SOUTHERLY FLOW OVER THE LOWER MS VALLEY BY SATURDAY AFTERNOON SHOULD AGAIN BRING UP GULF MOISTURE AND PROBABLY SPUR ISOLATED AFTERNOON CONVECTION...AT LEAST IN SOUTHERN ZONES. ENDED UP RAISING MEX POPS A BIT WHILE CUTTING TEMPS. SATURDAY NIGHT THROUGH SUNDAY NIGHT IS NOW SHOWING GOOD POTENTIAL TO BE A PERIOD CONTAINING WIDESPREAD SHOWERS AND STORMS SOMETIME THEREIN. NAILING DOWN THE TIMING IS DIFFICULT AT THIS JUNCTURE...AND THE PROGGED ACTIVE NORTHWEST FLOW SETUP WITH A BOUNDARY COMING IN COULD END UP SPELLING MULTIPLE ROUNDS OF RAIN FOR SOME FOLKS. HOWEVER...LATEST ENSEMBLE OUTPUT HAS THE MOST CONFIDENCE IN SHOWERS AND STORMS DURING THE DAY SUNDAY AND POPS WERE RAISED RATHER CONSIDERABLY OVER LATEST MEX OFFERINGS FOR THIS PERIOD. WE WILL ALSO HAVE TO WATCH FOR THE POTENTIAL FOR HEAVY RAINFALL AND POTENT STORMS WITH THIS FRONT BETWEEN LATE SATURDAY NIGHT AND SUNDAY EVENING. THE GFS SUGGESTS LOTS OF INSTABILITY IN PLAY...BUT PART OF THAT IS A PRODUCT OF OVER-DOING THE HEAT. WE STILL HAVE 4 DAYS TO WATCH THINGS...SO GIVEN CURRENT QUESTION MARKS I WILL NOT INTRODUCE ANYTHING IN HWO YET. MODEL GUIDANCE IS HAVING A LITTLE TROUBLE AFTER SUNDAY...WITH DIFFERENCES ARISING DUE TO HOW DEEPLY VARIOUS MODELS WANT TO CARVE THIS NEXT TROUGH INTO THE SOUTHEAST. THE ENSEMBLE GUIDANCE IS GENERALLY DEEPER THAN THE OPERATIONAL GFS WITH THIS TROUGH...AND THE DEEPER TROUGH SOLUTION WOULD ARGUE FOR ANOTHER DRY PERIOD OF AT LEAST A FEW DAYS AS THE COLD FRONT SURGES TO THE COAST ON MONDAY. BUT COLD FRONTS CONTINUALLY GETTING TO THE GULF COAST IS NOT VERY REGULAR FOR JULY AND I CANNOT DISCOUNT THE POTENTIAL FOR THE BOUNDARY TO HANG UP IN OUR NECK OF THE WOODS. THUS...I REMAINED RIGHT WITH MEX POPS AND TEMPS FOR MONDAY INTO THE MIDDLE OF NEXT WEEK...WHICH PORTRAYS A BETTER THAN AVERAGE SHOT AT RAIN AND SEASONABLE TEMPS. /BB/ && .AVIATION...A BAND OF SHOWERS AND THUNDERSTORMS HAS DEVELOPED AHEAD OF THE APPROACHING COLD FRONT AND WILL AFFECT JAN-GTR THROUGH 13Z AND THEN MEI AND HBG. SATELLITE IMAGERY SHOWS THE BACK EDGE OF THE CLOUD SHIELD NEARING GLH. A BRIEF PERIOD OF LIFR CONDITIONS MAY DEVELOP AT GLH ONCE THE SKIES CLEAR BUT ELSEWHERE CEILINGS SHOULD REMAIN ABOVE 3KFT AND VISIBILITIES GREATER THAN 6SM AWAY FROM THUNDERSTORMS. GRADUAL CLEARING IN THE NORTH IS EXPECTED TODAY...BUT SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS THE SOUTHERN HALF OF THE AREA AS THE FRONT IS EXPECTED TO SLOW AND EVENTUALLY STALL NEAR THE HIGHWAY 84 CORRIDOR. THE CHANCE FOR THUNDERSTORMS WILL CONTINUE IN THE SOUTH AFFECTING PRIMARILY HBG THROUGH THURSDAY. /22/ && .PRELIMINARY POINT TEMPS/POPS... JACKSON 87 67 91 66 / 58 10 13 13 MERIDIAN 88 66 91 64 / 57 18 14 13 VICKSBURG 88 68 91 66 / 50 7 12 12 HATTIESBURG 88 69 90 68 / 63 23 29 22 NATCHEZ 86 69 89 68 / 61 17 25 17 GREENVILLE 87 63 91 63 / 9 6 4 7 GREENWOOD 85 64 91 64 / 9 6 5 8 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...NONE. LA...NONE. AR...NONE. && 22/50
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 504 AM CDT WED JUL 22 2009 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 231015- ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND- MADISON LA-FRANKLIN LA-CATAHOULA-TENSAS-CONCORDIA-BOLIVAR- SUNFLOWER-LEFLORE-GRENADA-CARROLL-MONTGOMERY-WEBSTER-CLAY-LOWNDES- CHOCTAW-OKTIBBEHA-WASHINGTON-HUMPHREYS-HOLMES-ATTALA-WINSTON- NOXUBEE-ISSAQUENA-SHARKEY-YAZOO-MADISON MS-LEAKE-NESHOBA-KEMPER- WARREN-HINDS-RANKIN-SCOTT-NEWTON-LAUDERDALE-CLAIBORNE-COPIAH- SIMPSON-SMITH-JASPER-CLARKE-JEFFERSON-ADAMS-FRANKLIN MS-LINCOLN- LAWRENCE-JEFFERSON DAVIS-COVINGTON-JONES-MARION-LAMAR-FORREST- 504 AM CDT WED JUL 22 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI... NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS. .DAY ONE...TODAY AND TONIGHT THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .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 EXPECTED THROUGH NEXT TUESDAY. FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WWW.SRH.NOAA.GOV/JAN. THIS INCLUDES THE GRAPHICAL HAZARDOUS WEATHER OUTLOOK. 22
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 307 AM CDT WED JUL 22 2009 LAZ016-MSZ047-220850- WARREN MS-MADISON LA- 307 AM CDT WED JUL 22 2009 A STRONG THUNDERSTORM CAPABLE OF PRODUCING 40 TO 50 MPH WINDS WAS LOCATED 10 MILES WEST OF VICKSBURG AT 307 AM CDT...MOVING EAST AT 30 MPH. VERY HEAVY RAIN IS ALSO POSSIBLE WITH THIS STORM. HIGH WINDS CAN BRING DOWN TREES AND LARGE LIMBS RESULTING IN SERIOUS INJURY OR PROPERTY DAMAGE. EXERCISE EXTREME CAUTION WHEN OUTDOORS DURING SUCH STRONG WINDS...AND BE ESPECIALLY AWARE OF OLDER TREES. PEOPLE IN CENTRAL WARREN COUNTY...AND EASTERN MADISON PARISH SHOULD MONITOR THIS STORM CLOSELY. BYB
The Jackson/Brandon,MS radar (KDGX), 44 km away, was scanning. The volume nearest the first event began at 12:16 UTC.
1 flash flood. Local standard time, as filed.
A grocery store, in the Flora area, had part of its parking lot under water at the height of the heavy rain event and several inches of rain.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Mississippi in 2009Every state in 2009This day in weather historyWarnings in Mississippi, July 2009
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 187090.