Alert archive / Mississippi / Mesoscale Discussions in 2007

Mesoscale Discussion 1192

June 19, 200710 counties in Arkansas; 7 parishes in Louisiana; 65 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Jun 19, 2007, 10:17 AM CDT for 10 counties in Arkansas; 7 parishes in Louisiana; 65 counties in Mississippi. It was in force for 28 min.

The area

The outline as issued.

The facts

Issued: Jun 19, 2007, 10:17 AM CDT (15:17 UTC)
Expired: Jun 19, 2007, 10:45 AM CDT
In force: 28 min
Issued by: the Storm Prediction Center

All 82 counties

Arkansas County, AR, Ashley County, AR, Chicot County, AR, Desha County, AR, Drew County, AR, Lee County, AR, Monroe County, AR, Phillips County, AR, Prairie County, AR, St. Francis County, AR, East Carroll Parish, LA, Franklin Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Richland Parish, LA, Tensas Parish, LA, West Carroll Parish, LA, Adams County, MS, Amite County, MS, Attala County, MS, Bolivar County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Claiborne County, MS, Clarke County, MS, Clay County, MS, Coahoma County, MS, Copiah County, MS, Covington County, MS, DeSoto County, MS, Forrest County, MS, Franklin County, MS, Greene County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lafayette County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Leake County, MS, Leflore County, MS, Lincoln County, MS, Lowndes County, MS, Madison County, MS, Marion County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Panola County, MS, Perry County, MS, Pike County, MS, Quitman County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Tunica County, MS, Walthall County, MS, Warren County, MS, Washington County, MS, Wayne County, MS, Webster County, MS, Wilkinson County, MS, Winston County, MS, Yalobusha County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 90 km from the middle of the area, began a volume at 15:18 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 417Jun 19, 10:40 AM CDT

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 3.3 hours before the alert went out and 86 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: 1188 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 638 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 19, 10:39 AM CDT	Severe Thunderstorm Watch	SPC	Arkansas, Ashley, Chicot, Desha, Drew, Lincoln	6 hr
Jun 19, 12:55 PM CDT	Mesoscale Discussion	SPC	Arkansas, Ashley, Chicot, Desha, Drew, Lincoln	65 min
Jun 19, 3:07 PM CDT	Mesoscale Discussion	SPC	Ashley, Chicot	53 min
Jun 19, 3:41 PM CDT	Mesoscale Discussion	SPC	Ashley, Bradley, Calhoun, Clark, Cleveland, Columbia and 19 more	64 min
Jun 19, 3:21 PM CDT	Severe Thunderstorm Watch	SPC	Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Jefferson and 16 more	6 hr

Nearby

Mesoscale Discussions in Mississippi, 2007 Mesoscale Discussions in Arkansas, 2007 Mesoscale Discussions in Louisiana, 2007 Every mesoscale discussion in 2007

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.