Alert archive / Mississippi / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 340, NWS Memphis, TN

July 16, 20105 counties in Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Jul 16, 2010, 11:59 AM CDT for 5 counties in Mississippi. It was in force for 46 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 16, 2010, 11:59 AM CDT (16:59 UTC)
Expired
Jul 16, 2010, 12:45 PM CDT
In force
46 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon

Counties Itawamba County, MS, Lee County, MS, Pontotoc County, MS, Prentiss County, MS, Union County, MS

The radar

The Columbus AFB radar (KGWX), 65 km from the middle of the area, began a volume at 16:59 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, 5.0 hours before the alert went out and 123 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.

Skew-T log-pSkew-T log-p diagram, Little Rock, AR at 12:00Z on 2010-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2257 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 12:00Z on 2010-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2257 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
976 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 16, 11:04 AM CDT, 55 minutes earlier.

Area forecast discussion, Jul 16, 11:04 AM CDT, 55 minutes before
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Hazardous weather outlook, Jul 16, 4:31 AM CDT, 7 hours 28 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MEMPHIS TN
431 AM CDT FRI JUL 16 2010

ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-
MSZ001>017-020>024-TNZ001>004-019>021-048>055-088>092-171145-
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-
431 AM CDT FRI JUL 16 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST ARKANSAS...
THE MISSOURI BOOTHEEL...NORTH MISSISSIPPI...AND WEST TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

SOME STRONG TO SEVERE THUNDERSTORMS CAN BE EXPECTED TODAY...
MAINLY SOUTHEAST OF A UNION CITY TENNESSEE TO MEMPHIS TO MARIANNA
ARKANSAS LINE BETWEEN 10 AM AND 10 PM. DAMAGING WINDS UP TO 60 MPH
AND LOCALLY HEAVY RAINFALL OF A FEW INCHES CAPABLE OF PRODUCING
FLASH FLOODING ARE THE MAIN HAZARDS.

A HEAT ADVISORY IS IN EFFECT BETWEEN 10 AM AND 8 PM ALONG AND
SOUTH OF A WYNNE ARKANSAS TO MEMPHIS TO SAVANNAH TENNESSEE LINE
WHERE HEAT INDEX VALUES WILL BE 105 TO 109 DEGREES.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A FEW STRONG TO PERHAPS SEVERE THUNDERSTORMS ARE POSSIBLE
ON SATURDAY MAINLY SOUTH OF A CLARKSDALE TO BOONEVILLE
MISSISSIPPI LINE. GUSTY WINDS AND LOCALIZED FLASH FLOODING
WILL BE THE MAIN HAZARDS.

ADDITIONAL HEAT ADVISORIES ARE POSSIBLE WEST OF THE MISSISSIPPI
RIVER ON SATURDAY...AND ACROSS MUCH OF THE AREA SUNDAY INTO NEXT
WEEK WITH HEAT INDEX READINGS CLIMBING TO BETWEEN 105 AND 109
DEGREES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED IN A FEW LOCATIONS MAINLY
SOUTHEAST OF A UNION CITY TENNESSEE TO MEMPHIS TO MARIANNA
ARKANSAS LINE BETWEEN 10 AM AND 10 PM TODAY.

MBS

In the hours before

Special weather statement, Jul 16, 11:01 AM CDT, 58 minutes before
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Special weather statement, Jul 16, 11:13 AM CDT, 46 minutes before
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Special weather statement, Jul 16, 11:48 AM CDT, 11 minutes before
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The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 15, 7:45 PM CDTFlash Flood WarningMEGDecatur2 hr
Jul 16, 4:09 AM CDTHeat AdvisoryMEGFayette, Hardeman, Hardin, McNairy, Shelby11 hr
Jul 16, 1:35 PM CDTFlash Flood WarningMEGHardeman, McNairy3 hr
Jul 16, 1:58 PM CDTSevere Thunderstorm WarningMEGDecatur, Hardin, Henderson47 min
Jul 16, 2:00 PM CDTFlash Flood WarningMEGDecatur, Hardin, Henderson3 hr
Jul 16, 2:12 PM CDTSevere Thunderstorm WarningMEGHardeman48 min
Jul 16, 2:18 PM CDTFlash Flood WarningMEGHardeman3 hr
Jul 16, 2:59 PM CDTFlash Flood WarningMEGChester, Fayette, Hardeman, McNairy3 hr
Jul 16, 4:29 PM CDTFlash Flood WarningMEGCarroll, Gibson, Henderson, Henry, Madison86 min
Jul 16, 4:34 PM CDTSevere Thunderstorm WarningMEGHenry, Weakley21 min
Jul 16, 11:18 AM CDTSevere Thunderstorm WarningMEGLafayette, Lee, Pontotoc, Prentiss, Tippah, Union42 min
Jul 16, 12:06 PM CDTFlash Flood WarningMEGAlcorn, Itawamba, Lee, Pontotoc, Prentiss, Tippah and 2 more3 hr
Jul 16, 12:40 PM CDTSevere Thunderstorm WarningMEGChickasaw, Itawamba, Lee, Monroe, Pontotoc65 min
Jul 16, 12:55 PM CDTFlash Flood WarningMEGChickasaw, Itawamba, Lee, Monroe, Pontotoc2 hr
Jul 16, 2:27 PM CDTSevere Thunderstorm WarningMEGLafayette, Panola, Tallahatchie, Yalobusha63 min
Jul 16, 2:43 PM CDTFlash Flood WarningMEGLafayette, Panola, Quitman, Tallahatchie, Yalobusha3 hr
Jul 16, 2:59 PM CDTSevere Thunderstorm WarningMEGLafayette, Panola46 min
Jul 16, 3:34 PM CDTFlash Flood WarningMEGLafayette, Panola4 hr
Jul 16, 4:09 PM CDTFlash Flood WarningMEGBenton, Lafayette, Marshall, Panola, Tate3 hr
Jul 16, 6:03 PM CDTFlash Flood WarningMEGChickasaw, Lee, Monroe, Pontotoc, Union117 min
Jul 16, 6:44 PM CDTFlash Flood WarningMEGItawamba, Lee, Monroe2 hr
Jul 16, 5:33 PM CDTFlash Flood WarningMEGCraighead39 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2010Every severe thunderstorm warning in 2010

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.