Alert archive / Mississippi / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 412, NWS Memphis, TN

October 12, 2010Lee County, Pontotoc County, Union County, Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Oct 12, 2010, 4:05 PM CDT for Lee County, Pontotoc County, Union County, Mississippi. It was in force for 40 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
Oct 12, 2010, 4:05 PM CDT (21:05 UTC)
Expired
Oct 12, 2010, 4:45 PM CDT
In force
40 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon

Counties Lee County, MS, Pontotoc County, MS, Union County, MS

The radar

The Columbus AFB radar (KGWX), 72 km from the middle of the area, began a volume at 21:06 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 12, 12:48 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 9.1 hours before the alert went out and 235 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, Birmingham, AL at 12:00Z on 2010-10-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 145 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, Birmingham, AL at 12:00Z on 2010-10-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.1939587897Sfc1 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
145 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
990 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
-19 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 12, 2:54 PM CDTSevere Thunderstorm WarningMEGLauderdale, Tipton51 min
Oct 12, 4:12 PM CDTSevere Thunderstorm WarningMEGHenry48 min
Oct 12, 12:37 PM CDTSevere Thunderstorm WarningMEGCoahoma, Tunica38 min
Oct 12, 12:44 PM CDTSevere Thunderstorm WarningMEGCoahoma46 min
Oct 12, 1:07 PM CDTSevere Thunderstorm WarningMEGCoahoma, Panola, Quitman, Tate, Tunica38 min
Oct 12, 1:41 PM CDTSevere Thunderstorm WarningMEGPanola, Quitman, Tate, Tunica49 min
Oct 12, 2:24 PM CDTSevere Thunderstorm WarningMEGPanola, Tate51 min
Oct 12, 2:32 PM CDTSevere Thunderstorm WarningMEGPanola43 min
Oct 12, 3:02 PM CDTSevere Thunderstorm WarningMEGMarshall, Tate43 min
Oct 12, 3:09 PM CDTSevere Thunderstorm WarningMEGLafayette, Panola51 min
Oct 12, 3:27 PM CDTSevere Thunderstorm WarningMEGCalhoun, Lafayette, Pontotoc, Yalobusha48 min
Oct 12, 3:36 PM CDTSevere Thunderstorm WarningMEGLafayette, Marshall, Union39 min
Oct 12, 4:34 PM CDTSevere Thunderstorm WarningMEGItawamba, Lee, Pontotoc, Union25 min
Oct 12, 11:57 AM CDTSevere Thunderstorm WarningMEGLee, Phillips48 min
Oct 12, 3:15 PM CDTSevere Thunderstorm WarningMEGCraighead, Mississippi, Poinsett45 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.