Alert archive / Mississippi / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 346, NWS Memphis, TN

July 26, 2008Pontotoc County, Union County, Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Jul 26, 2008, 5:42 PM CDT for Pontotoc County, Union County, Mississippi. It was in force for 48 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 26, 2008, 5:42 PM CDT (22:42 UTC)
Expired: Jul 26, 2008, 6:30 PM CDT
In force: 48 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon

Counties Pontotoc County, MS, Union County, MS

The radar

The Columbus AFB radar (KGWX), 82 km from the middle of the area, began a volume at 22:42 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

Jackson, MS (KJAN), launched 12:00Z, 10.7 hours before the alert went out and 247 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1518 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 1054 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 82 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.7

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 26, 3:14 PM CDT, 2 hours 28 minutes earlier.

Area forecast discussion, Jul 26, 3:14 PM CDT, 2 hours 28 minutes before

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Hazardous weather outlook, Jul 26, 3:19 PM CDT, 2 hours 23 minutes before

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In the hours before

Local storm report, Jul 26, 12:36 PM CDT, 5 hours 6 minutes before

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Local storm report, Jul 26, 12:38 PM CDT, 5 hours 4 minutes before

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Special weather statement, Jul 26, 4:06 PM CDT, 1 hour 36 minutes before

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Special weather statement, Jul 26, 5:01 PM CDT, 41 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 9:02 PM CDT	Areal Flood Advisory	MEG	Itawamba, Prentiss, Tishomingo	118 min
Jul 26, 2:51 AM CDT	Areal Flood Advisory	MEG	Alcorn, Tishomingo	3 hr
Jul 26, 3:50 AM CDT	Heat Advisory	MEG	Alcorn, Benton, Calhoun, Chickasaw, Coahoma, DeSoto and 16 more	4 days
Jul 26, 10:52 AM CDT	Areal Flood Advisory	MEG	Alcorn, Prentiss, Tishomingo	113 min
Jul 26, 5:22 PM CDT	Severe Thunderstorm Warning	MEG	Lee, Pontotoc	38 min
Jul 26, 6:01 PM CDT	Severe Thunderstorm Warning	MEG	Chickasaw, Lee, Pontotoc	40 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2008 Every severe thunderstorm warning in 2008

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.