Alert archive / Mississippi / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 1, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at Jan 3, 2009, 4:10 PM CST for Calhoun County, Lafayette County, Mississippi. It was in force for 35 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
- Jan 3, 2009, 4:10 PM CST (22:10 UTC)
- Expired
- Jan 3, 2009, 4:45 PM CST
- In force
- 35 min
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
Counties Calhoun County, MS, Lafayette County, MS
The radar
The Columbus AFB radar (KGWX), 103 km from the middle of the area, began a volume at 22:10 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, 10.2 hours before the alert went out and 91 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
- 349 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 454 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
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 Jan 3, 3:49 PM CST, 21 minutes earlier.
Area forecast discussion, Jan 3, 3:49 PM CST, 21 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MEMPHIS TN 349 PM CST SAT JAN 3 2009 .DISCUSSION... A SHORTWAVE WILL CONTINUE TRACKING EASTWARD ALONG THE GULF COAST REGION TONIGHT WHERE A HIGH CHANCE OF SHOWERS AND THUNDERSTORMS WILL EXIST. EXPECT A LOWER CHANCE OF SHOWERS AND POSSIBLE THUNDERSTORMS ACROSS THE MIDSOUTH TONIGHT BETWEEN THE SYSTEM TO THE SOUTH AND AN APPROACHING COLD FRONT FROM THE NORTHWEST. THE COLD FRONT WILL MOVE THROUGH SUNDAY AND PROVIDE A CHANCE OF SHOWERS. A SURFACE LOW WILL TRACK ACROSS THE LOWER MISSISSIPPI VALLEY INTO THE SOUTHEAST STATES MONDAY NIGHT THROUGH TUESDAY. THIS WILL PROVIDE A HIGH CHANCE OF RAIN DURING THE PERIOD. COLDER AIR ON THE BACK SIDE OF THE LOW COMBINED WITH A SHORTWAVE WILL PROVIDE A CHANCE OF RAIN/SNOW MIX TUESDAY NIGHT. A FEW FLURRIES OR SNOW SHOWERS MAY LINGER INTO WEDNESDAY. A WEAK OVERRUNNING SCENARIO MAY PROVIDE ANOTHER CHANCE OF PRECIPITATION FRIDAY INTO EARLY SATURDAY. AIRMASS MAY BE COLD ENOUGH TO PROVIDE A RAIN/SNOW MIX FRIDAY NIGHT INTO SATURDAY BUT EXPECT LIGHT PRECIPITATION AT THIS TIME. SWC && .AVIATION... 18Z TAFS 17Z SURFACE MAPS SHOWED A DIFFUSE WARM FRONT EXTENDING FROM JUST NORTH AND EAST OF A KTUP TO KMKL LINE. FLIGHT CATEGORIES HAVE IMPROVED TO MVFR AT KMEM AND KJBR AT 17Z. EXPECT KMKL TO FOLLOW SUIT LATER THIS AFTERNOON. KTUP WILL BE A TOUGHER CALL...GIVEN THE DEEP MOISTURE FLOWING IN FROM CENTRAL MS AND WIDESPREAD TSRA COVERAGE TO THE SOUTH...OVER SOUTHERN MS. FOR THE POST 00Z PERIODS...A RATHER PRONOUNCED SHORTWAVE DISTURBANCE ALONG THE SOUTHWEST LA COAST AT MIDDAY WILL LIFT WELL TO THE EAST OF THE AREA THIS EVENING. THE MODIFIED MARINE LAYER OVER THE MIDSOUTH WILL REMAIN IN TACT. SOME SHORT LIVED BREAKS IN THE MVFR CIGS EXPECTED THIS EVENING BEHIND THE SHORTWAVE. CIGS SHOULD LOWER WITH DIURNAL COOLING AND MORE GULF MOISTURE OVERSPREADING THE STABLE BOUNDARY LAYER FROM THE SOUTHWEST. GFS LAMP GUIDANCE APPEARS TO HOLD ONTO THE VLIFR CIGS A LITTLE TOO LONG BEYOND 12Z SUNDAY...BASED ON THE DRIER NAM MODEL SOUNDINGS. PWB && .PRELIMINARY POINT TEMPS/POPS... MEM 56 59 35 44 / 30 30 10 40 MKL 54 58 32 45 / 30 30 10 30 JBR 52 53 27 40 / 30 30 10 20 TUP 55 67 39 47 / 40 30 10 60 && .MEG WATCHES/WARNINGS/ADVISORIES... AR...NONE. MO...NONE. MS...NONE. TN...NONE. &&
Hazardous weather outlook, Jan 3, 10:37 AM CST, 5 hours 33 minutes before
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</html>In the hours before
Special weather statement, Jan 3, 3:50 PM CST, 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MEMPHIS TN 350 PM CST SAT JAN 3 2009 MSZ013-015-022-032215- LAFAYETTE MS-PONTOTOC MS-CALHOUN MS- 350 PM CST SAT JAN 3 2009 ...THIS SIGNIFICANT WEATHER ALERT IS FOR... NORTHWESTERN CALHOUN COUNTY IN NORTHEAST MISSISSIPPI... NORTHWESTERN PONTOTOC COUNTY IN NORTHEAST MISSISSIPPI... SOUTHEASTERN LAFAYETTE COUNTY IN NORTHWEST MISSISSIPPI... A STRONG THUNDERSTORM PRODUCING PEA TO DIME SIZE HAIL WAS LOCATED 3 MILES SOUTHWEST OF PARIS AT 350 PM CST...MOVING NORTHEAST AT 20 MPH. PEOPLE IN CALHOUN...LAFAYETTE AND PONTOTOC COUNTIES...INCLUDING LOCATIONS NEAR PONTOTOC...SHOULD MONITOR THIS STORM CLOSELY THIS SIGNIFICANT WEATHER ALERT IS IN EFFECT UNTIL 415 PM CST.
The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 2, 10:01 PM CST | Dense Fog Advisory | MEG | Calhoun, Chickasaw, Coahoma, Itawamba, Lafayette, Lee and 9 more | 12 hr |
| Jan 3, 5:30 PM CST | Severe Thunderstorm Warning | MEG | Pontotoc | 18 min |
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.