Alert archive / Mississippi / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 294, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at Jul 13, 2009, 7:24 AM CDT for 5 counties in Mississippi. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 13, 2009, 7:24 AM CDT (12:24 UTC)
- Expired
- Jul 13, 2009, 7:54 AM CDT
- In force
- 30 min
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
Counties Benton County, MS, Lafayette County, MS, Marshall County, MS, Pontotoc County, MS, Union County, MS
The radar
The Memphis radar (KNQA), 107 km from the middle of the area, began a volume at 12:26 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 0.4 hours before the alert went out and 73 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2478 J/kg
- Mixed-layer CIN
- -111 J/kg
- Mixed-layer LCL
- 1372 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.4
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Memphis, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 13, 7:03 AM CDT, 21 minutes earlier.
Area forecast discussion, Jul 13, 7:03 AM CDT, 21 minutes before
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</html>Hazardous weather outlook, Jul 13, 4:50 AM CDT, 2 hours 34 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MEMPHIS TN 450 AM CDT MON JUL 13 2009 ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115- MSZ001>017-020>024-TNZ001>004-019>021-048>055-088>092-141200- ALCORN-BENTON MS-CALHOUN-CARROLL-CHESTER-CHICKASAW-CLAY-COAHOMA- CRAIGHEAD-CRITTENDEN-CROCKETT-CROSS-DESOTO-DECATUR-DUNKLIN-DYER- FAYETTE-GIBSON-GREENE-HARDEMAN-HARDIN-HAYWOOD-HENDERSON-HENRY- ITAWAMBA-LAFAYETTE-LAKE-LAUDERDALE-LAWRENCE-LEE AR-LEE MS-MADISON- MARSHALL-MCNAIRY-MISSISSIPPI-MONROE-OBION-PANOLA-PEMISCOT- PHILLIPS-POINSETT-PONTOTOC-PRENTISS-QUITMAN-RANDOLPH-SHELBY- ST. FRANCIS-TALLAHATCHIE-TATE-TIPPAH-TIPTON-TISHOMINGO-TUNICA- UNION-WEAKLEY-YALOBUSHA- 450 AM CDT MON JUL 13 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST ARKANSAS... THE MISSOURI BOOTHEEL...NORTH MISSISSIPPI...AND WEST TENNESSEE. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTHEAST AND EAST-CENTRAL ARKANSAS INTO PORTIONS OF WEST TENNESSEE AND ALL OF NORTH MISSISSIPPI TODAY INTO THIS EVENING. THE AFFECTED AREA IS GENERALLY ALONG AND SOUTH OF A LINE FROM NEAR POCAHONTAS ARKANSAS TO RIPLEY TENNESSEE TO DECATURVILLE TENNESSEE. DAMAGING WINDS...LOCALLY HEAVY RAINFALL WITH POSSIBLE FLOODING...AND FREQUENT GROUND TO CLOUD LIGHTNING WILL BE THE MAIN THREATS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY HEAT INDEX READINGS WILL CLIMB TO NEAR 105 DEGREES TUESDAY FROM EAST-CENTRAL ARKANSAS INTO NORTHWEST MISSISSIPPI...AND TO BETWEEN 105 AND 110 DEGREES ACROSS MUCH OF THE MIDSOUTH WEDNESDAY. HEAT ADVISORIES MAY BE NECESSARY FOR PORTIONS OF THE AREA TUESDAY...BUT WILL BE MORE LIKELY FOR WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BECOME NECESSARY TODAY INTO THIS EVENING. JCL
In the hours before
Special weather statement, Jul 13, 5:40 AM CDT, 1 hour 44 minutes before
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</html>Special weather statement, Jul 13, 7:09 AM CDT, 15 minutes before
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</html>Special weather statement, Jul 13, 7:15 AM CDT, 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MEMPHIS TN 715 AM CDT MON JUL 13 2009 MSZ021>023-131300- YALOBUSHA MS-CALHOUN MS-CHICKASAW MS- 715 AM CDT MON JUL 13 2009 ...THIS SIGNIFICANT WEATHER ALERT IS FOR... CALHOUN COUNTY IN NORTHEAST MISSISSIPPI... WESTERN CHICKASAW COUNTY IN NORTHEAST MISSISSIPPI... SOUTHEASTERN YALOBUSHA COUNTY IN NORTHWEST MISSISSIPPI... A STRONG THUNDERSTORM PRODUCING PEA TO DIME SIZE HAIL AND 40 TO 50 MPH WINDS WAS LOCATED 8 MILES WEST OF BRUCE AT 716 AM CDT...MOVING SOUTHEAST AT 25 MPH. VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE ALSO POSSIBLE WITH THIS THUNDERSTORM. THIS STORM IS INTENSIFYING AND COULD BECOME SEVERE RAPIDLY. PEOPLE IN CALHOUN...CHICKASAW AND YALOBUSHA COUNTIES...INCLUDING LOCATIONS NEAR HOUSTON...SHOULD MONITOR THIS STORM CLOSELY.
The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 2:22 AM CDT | Severe Thunderstorm Warning | MEG | Alcorn, Benton, Marshall, Tippah | 68 min |
| Jul 13, 2:27 AM CDT | Severe Thunderstorm Warning | MEG | Alcorn, Prentiss, Tippah, Tishomingo | 63 min |
| Jul 13, 2:44 AM CDT | Tornado Warning | MEG | Benton, Marshall | 46 min |
| Jul 13, 3:27 AM CDT | Severe Thunderstorm Warning | MEG | Benton, Marshall, Tippah | 63 min |
| Jul 13, 3:51 AM CDT | Areal Flood Advisory | MEG | Benton, Marshall, Tippah | 114 min |
| Jul 13, 4:03 AM CDT | Severe Thunderstorm Warning | MEG | Alcorn, Itawamba, Prentiss, Tishomingo | 57 min |
| Jul 13, 4:18 AM CDT | Severe Thunderstorm Warning | MEG | Benton, Lafayette, Marshall, Pontotoc, Tippah, Union | 57 min |
| Jul 13, 4:20 AM CDT | Areal Flood Advisory | MEG | Alcorn, Itawamba, Lee, Prentiss, Tishomingo | 3 hr |
| Jul 13, 4:57 AM CDT | Severe Thunderstorm Warning | MEG | Benton, Marshall, Tippah | 63 min |
| Jul 13, 5:08 AM CDT | Areal Flood Advisory | MEG | Benton, Lafayette, Marshall, Tippah, Union | 4 hr |
| Jul 13, 5:39 AM CDT | Severe Thunderstorm Warning | MEG | Calhoun, Chickasaw, Lafayette, Pontotoc | 66 min |
| Jul 13, 5:44 AM CDT | Areal Flood Advisory | MEG | Benton, Marshall, Tippah | 4 hr |
| Jul 13, 5:46 AM CDT | Areal Flood Advisory | MEG | Calhoun, Chickasaw, Lafayette, Lee, Pontotoc, Union | 3 hr |
| Jul 13, 9:12 AM CDT | Severe Thunderstorm Warning | MEG | DeSoto | 63 min |
| Jul 13, 9:29 AM CDT | Severe Thunderstorm Warning | MEG | DeSoto, Panola, Tate, Tunica | 61 min |
| Jul 13, 10:15 AM CDT | Severe Thunderstorm Warning | MEG | DeSoto, Lafayette, Marshall, Panola, Tate | 60 min |
| Jul 13, 11:03 AM CDT | Severe Thunderstorm Warning | MEG | Calhoun, Chickasaw, Lafayette, Pontotoc, Yalobusha | 42 min |
| Jul 13, 11:31 AM CDT | Severe Thunderstorm Warning | MEG | Calhoun, Chickasaw | 44 min |
| Jul 12, 8:41 PM CDT | Areal Flood Advisory | MEG | Carroll, Henry, Weakley | 78 min |
| Jul 12, 9:40 PM CDT | Areal Flood Advisory | MEG | Decatur | 3 hr |
| Jul 12, 9:49 PM CDT | Severe Thunderstorm Warning | MEG | Decatur | 41 min |
| Jul 12, 10:32 PM CDT | Severe Thunderstorm Warning | MEG | Decatur, Henderson | 43 min |
| Jul 13, 1:22 AM CDT | Severe Thunderstorm Warning | MEG | Hardeman, Haywood, Madison | 38 min |
| Jul 13, 1:38 AM CDT | Severe Thunderstorm Warning | MEG | Crockett, Dyer, Haywood, Lauderdale | 52 min |
| Jul 13, 1:46 AM CDT | Severe Thunderstorm Warning | MEG | Fayette, Hardeman, Haywood, Lauderdale, Tipton | 44 min |
| Jul 13, 2:55 AM CDT | Severe Thunderstorm Warning | MEG | Fayette, Hardeman, Haywood, Lauderdale, Madison, Tipton | 65 min |
| Jul 13, 4:18 AM CDT | Severe Thunderstorm Warning | MEG | Fayette, Hardeman, Haywood, Lauderdale, Shelby, Tipton | 57 min |
| Jul 13, 9:45 AM CDT | Flash Flood Warning | MEG | Shelby | 3 hr |
| Jul 13, 7:46 AM CDT | Severe Thunderstorm Warning | MEG | Craighead, Greene, Lawrence, Poinsett | 59 min |
| Jul 13, 8:29 AM CDT | Severe Thunderstorm Warning | MEG | Crittenden, Cross, Poinsett | 61 min |
| Jul 13, 8:40 AM CDT | Flash Flood Warning | MEG | Crittenden, Cross, Poinsett | 2 hr |
Nearby
Severe Thunderstorm Warnings in Mississippi, 2009Every severe thunderstorm warning in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.