Alert archive / Tennessee / Severe Thunderstorm Watches in 2014

Severe Thunderstorm Watch 419

July 14, 20144 states

The Storm Prediction Center issued this severe thunderstorm watch at Jul 14, 2014, 1:22 PM CDT for 4 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Jul 14, 2014, 1:22 PM CDT (18:22 UTC)
Expired: Jul 14, 2014, 8:00 PM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 60 kt

All 101 counties

Cleburne County, AR, Conway County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Faulkner County, AR, Garland County, AR, Greene County, AR, Independence County, AR, Jackson County, AR, Johnson County, AR, Lee County, AR, Logan County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Montgomery County, AR, Newton County, AR, Perry County, AR, Poinsett County, AR, Polk County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Scott County, AR, Searcy County, AR, St. Francis County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Dunklin County, MO, Pemiscot County, MO, Alcorn County, MS, Benton County, MS, DeSoto County, MS, Marshall County, MS, Tate County, MS, Tippah County, MS, Tunica County, MS, Bedford County, TN, Benton County, TN, Cannon County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Clay County, TN, Coffee County, TN, Crockett County, TN, Cumberland County, TN, Davidson County, TN, Decatur County, TN, DeKalb County, TN, Dickson County, TN, Dyer County, TN, Fayette County, TN, Fentress County, TN, Gibson County, TN, Giles County, TN, Grundy County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Lake County, TN, Lauderdale County, TN, Lawrence County, TN, Lewis County, TN, Macon County, TN, Madison County, TN, Marshall County, TN, Maury County, TN, McNairy County, TN, Montgomery County, TN, Obion County, TN, Overton County, TN, Perry County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Shelby County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Tipton County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, Wayne County, TN, Weakley County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Memphis radar (KNQA), 68 km from the middle of the area, began a volume at 18:22 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 10%
One or more EF2 to EF5 tornadoes: 2%
Ten or more severe wind reports: 40%
One or more gusts of 65 knots or more: 10%
Ten or more severe hail reports: 40%
One or more hailstones of 2 inches or more: 10%
Six or more combined severe hail and wind reports: 70%

Warnings issued inside it

44 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jul 14, 1:28 PM CDT	Severe Thunderstorm Warning	LZK	Newton	32 min
Jul 14, 1:50 PM CDT	Severe Thunderstorm Warning	LZK	Newton, Pope, Searcy, Van Buren	40 min
Jul 14, 2:04 PM CDT	Severe Thunderstorm Warning	MEG	Dyer, Lauderdale	22 min
Jul 14, 2:06 PM CDT	Severe Thunderstorm Warning	LZK	Searcy, Stone, Van Buren	24 min
Jul 14, 2:16 PM CDT	Severe Thunderstorm Warning	LZK	Polk, Scott	29 min
Jul 14, 2:26 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Conway, Johnson, Logan, Pope, Searcy and 2 more	49 min
Jul 14, 2:33 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Carroll, Decatur, Gibson, Henderson, Henry and 1 more	57 min
Jul 14, 2:39 PM CDT	Severe Thunderstorm Warning	MEG	Carroll, Crockett, Gibson, Henderson, Madison	51 min
Jul 14, 2:41 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Independence, Stone	49 min
Jul 14, 2:42 PM CDT	Severe Thunderstorm Warning	LZK	Conway, Faulkner, Van Buren	33 min
Jul 14, 2:46 PM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Scott, Yell	44 min
Jul 14, 2:47 PM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Polk, Scott	43 min
Jul 14, 3:04 PM CDT	Severe Thunderstorm Warning	OHX	Houston, Humphreys, Stewart	56 min
Jul 14, 3:12 PM CDT	Flash Flood Warning	LZK	Johnson, Newton, Pope	3 hr
Jul 14, 3:16 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Carroll, Decatur, Gibson, Henderson, Madison	59 min
Jul 14, 3:38 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner, White	37 min
Jul 14, 3:43 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Humphreys	47 min
Jul 14, 4:08 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Decatur, Hardin, Henderson, McNairy	52 min
Jul 14, 4:12 PM CDT	Severe Thunderstorm Warning	MEG	Craighead, Cross, Poinsett	48 min
Jul 14, 4:21 PM CDT	Severe Thunderstorm Warning	MEG	Shelby	11 min
Jul 14, 4:29 PM CDT	Flash Flood Warning	MEG	Decatur	2 hr
Jul 14, 4:34 PM CDT	Severe Thunderstorm Warning	OHX	Lewis, Perry, Wayne	41 min
Jul 14, 4:48 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Hardeman, Haywood, Henderson, Madison	42 min
Jul 14, 4:49 PM CDT	Severe Thunderstorm Warning	MEG	Crittenden, Cross, Mississippi, Poinsett	41 min
Jul 14, 4:51 PM CDT	Severe Thunderstorm Warning	MEG	Craighead	39 min
Jul 14, 4:59 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Decatur, Hardin, Henderson, McNairy	46 min
Jul 14, 5:07 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Williamson	38 min
Jul 14, 5:08 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Hot Spring, Saline	37 min
Jul 14, 5:12 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Fayette, Hardeman, Haywood, McNairy, Madison and 1 more	48 min
Jul 14, 5:14 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Lewis, Maury	46 min
Jul 14, 5:15 PM CDT	Severe Thunderstorm Warning	MEG	Crittenden, Cross, Mississippi, Poinsett, St. Francis	60 min
Jul 14, 5:18 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Rutherford, Wilson	31 min
Jul 14, 5:33 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Marshall, Maury, Rutherford, Williamson	31 min
Jul 14, 5:38 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Decatur, Hardin, Henderson, McNairy	52 min
Jul 14, 5:40 PM CDT	Flash Flood Warning	MEG	Chester, Fayette, Hardeman, Hardin, Haywood, Henderson and 3 more	3 hr
Jul 14, 5:52 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Crockett, Fayette, Hardeman, Haywood, Lauderdale and 4 more	53 min
Jul 14, 6:08 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan	37 min
Jul 14, 6:23 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Decatur, Hardeman, Hardin, Henderson, McNairy and 1 more	67 min
Jul 14, 6:24 PM CDT	Severe Thunderstorm Warning	LZK	Grant, Jefferson, Lonoke, Pulaski	51 min
Jul 14, 6:28 PM CDT	Severe Thunderstorm Warning	MEG	Benton, DeSoto, Marshall, Tate	47 min
Jul 14, 6:38 PM CDT	Severe Thunderstorm Warning	MEG	Carroll, Chester, Crockett, Fayette, Gibson, Hardeman and 4 more	52 min
Jul 14, 6:43 PM CDT	Flash Flood Warning	MEG	Decatur	3 hr
Jul 14, 6:55 PM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Benton, Tippah	50 min
Jul 14, 7:26 PM CDT	Severe Thunderstorm Warning	MEG	Hardin, McNairy	21 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Little Rock, AR (KBYH), launched 12:00Z, 6.4 hours before the alert went out and 107 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: 875 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 1587 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 136 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 14, 5:53 PM CDT	Mesoscale Discussion	SPC	Colbert, DeKalb, Franklin, Jackson, Lauderdale, Lawrence and 5 more	97 min
Jul 14, 12:10 PM CDT	Mesoscale Discussion	SPC	Clay, Craighead, Crittenden, Cross, Greene, Jackson and 4 more	2 hr
Jul 14, 3:57 PM CDT	Mesoscale Discussion	SPC	Cleburne, Conway, Craighead, Crittenden, Cross, Faulkner and 16 more	93 min
Jul 13, 10:04 PM CDT	Mesoscale Discussion	SPC	Ballard, Caldwell, Carlisle, Christian, Crittenden, Daviess and 13 more	86 min
Jul 14, 4:53 PM CDT	Mesoscale Discussion	SPC	Boone, Bracken, Bullitt, Campbell, Carroll, Franklin and 17 more	67 min
Jul 14, 10:56 AM CDT	Mesoscale Discussion	SPC	Audrain, Bates, Benton, Boone, Callaway, Cass and 22 more	94 min
Jul 14, 11:42 AM CDT	Severe Thunderstorm Watch	SPC	Audrain, Benton, Boone, Callaway, Camden, Cole and 25 more	6 hr
Jul 14, 1:10 PM CDT	Mesoscale Discussion	SPC	Barton, Bates, Cedar, Christian, Dade, Dallas and 10 more	2 hr
Jul 14, 2:21 PM CDT	Mesoscale Discussion	SPC	Bollinger, Cape Girardeau, Crawford, Dent, Franklin, Gasconade and 13 more	54 min
Jul 14, 11:50 AM CDT	Mesoscale Discussion	SPC	Carter, Johnson	85 min

Nearby

Severe Thunderstorm Watches in Tennessee, 2014 Severe Thunderstorm Watches in Arkansas, 2014 Severe Thunderstorm Watches in Mississippi, 2014 Every severe thunderstorm watch in 2014

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.