Alert archive / Tennessee / Severe Thunderstorm Watches in 2017

Severe Thunderstorm Watch 280

May 27, 20175 states

The Storm Prediction Center issued this severe thunderstorm watch at May 27, 2017, 5:13 PM CDT for 5 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
May 27, 2017, 5:13 PM CDT (22:13 UTC)
Expired
May 28, 2017, 12:00 AM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Particularly dangerous situation
Yes
Largest hail expected
2 in
Strongest gust expected
70 kt
All 106 counties

Alexander County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Massac County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Gibson County, IN, Pike County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Allen County, KY, Ballard County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Fulton County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Ohio County, KY, Simpson County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Warren County, KY, Webster County, KY, Cape Girardeau County, MO, Dunklin County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Scott County, MO, Stoddard County, MO, Bedford County, TN, Benton County, TN, Cannon County, TN, Carroll County, TN, Cheatham County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Dyer County, TN, Fentress County, TN, Gibson County, TN, Giles County, TN, Grundy County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Lake County, TN, Lawrence County, TN, Lewis County, TN, Macon County, TN, Marshall County, TN, Maury 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, Smith County, TN, Stewart County, TN, Sumner 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 Paducah radar (KPAH), 53 km from the middle of the area, began a volume at 22:12 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
50%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
95%
One or more gusts of 65 knots or more
90%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 27, 5:14 PM CDTSevere Thunderstorm WarningPAHMississippi, Scott, Stoddard46 min
May 27, 5:15 PM CDTSevere Thunderstorm WarningPAHCalloway, Marshall, Trigg31 min
May 27, 5:17 PM CDTSevere Thunderstorm WarningPAHMuhlenberg43 min
May 27, 5:19 PM CDTSevere Thunderstorm WarningMEGBenton, Henry41 min
May 27, 5:21 PM CDTSevere Thunderstorm WarningPAHCaldwell, Christian, Hopkins, Lyon, Muhlenberg, Trigg39 min
May 27, 5:23 PM CDTSevere Thunderstorm WarningOHXCumberland, Putnam, White37 min
May 27, 5:26 PM CDTFlash Flood WarningPAHBollinger, Mississippi, Scott, Stoddard, Wayne3 hr
May 27, 5:36 PM CDTSevere Thunderstorm WarningPAHHopkins, McLean, Muhlenberg, Webster39 min
May 27, 5:37 PM CDTSevere Thunderstorm WarningPAHAlexander, Jackson, Pulaski, Union38 min
May 27, 5:45 PM CDTSevere Thunderstorm WarningPAHChristian, Muhlenberg, Todd45 min
May 27, 5:58 PM CDTSevere Thunderstorm WarningMEGBenton, Henry32 min
May 27, 5:59 PM CDTSevere Thunderstorm WarningPAHChristian, Hopkins, Muhlenberg16 min
May 27, 6:01 PM CDTSevere Thunderstorm WarningPAHCarlisle, Fulton, Hickman44 min
May 27, 6:03 PM CDTSevere Thunderstorm WarningOHXClay27 min
May 27, 6:04 PM CDTSevere Thunderstorm WarningOHXDickson, Houston, Humphreys, Montgomery, Stewart26 min
May 27, 6:07 PM CDTSevere Thunderstorm WarningLMKBreckinridge, Butler, Grayson, Hancock, Ohio38 min
May 27, 6:10 PM CDTSevere Thunderstorm WarningPAHHardin, Johnson, Massac, Pope, Pulaski65 min
May 27, 6:10 PM CDTSevere Thunderstorm WarningOHXCheatham, Dickson, Montgomery, Robertson35 min
May 27, 6:29 PM CDTSevere Thunderstorm WarningLMKLogan16 min
May 27, 6:31 PM CDTSevere Thunderstorm WarningOHXCheatham, Dickson, Houston, Humphreys, Montgomery, Stewart29 min
May 27, 6:35 PM CDTSevere Thunderstorm WarningLMKBreckinridge, Hancock, Meade, Ohio25 min
May 27, 6:38 PM CDTSevere Thunderstorm WarningOHXCheatham, Davidson, Robertson37 min
May 27, 6:39 PM CDTSevere Thunderstorm WarningMEGHenry, Obion, Weakley51 min
May 27, 6:40 PM CDTSevere Thunderstorm WarningPAHHardin65 min
May 27, 6:44 PM CDTSevere Thunderstorm WarningLMKLogan, Simpson31 min
May 27, 6:44 PM CDTSevere Thunderstorm WarningOHXCheatham, Davidson, Dickson, Hickman, Humphreys, Maury and 1 more31 min
May 27, 6:45 PM CDTSevere Thunderstorm WarningPAHCarlisle, Fulton, Hickman30 min
May 27, 6:51 PM CDTSevere Thunderstorm WarningOHXDavidson, Macon, Robertson, Sumner, Wilson24 min
May 27, 6:58 PM CDTSevere Thunderstorm WarningOHXCheatham, Dickson, Houston, Humphreys, Montgomery17 min
May 27, 7:03 PM CDTSevere Thunderstorm WarningMEGCarroll, Henry, Obion, Weakley42 min
May 27, 7:15 PM CDTSevere Thunderstorm WarningOHXDavidson, Macon, Robertson, Smith, Sumner, Trousdale and 1 more30 min
May 27, 7:18 PM CDTSevere Thunderstorm WarningMEGBenton, Carroll, Gibson, Henry, Obion, Weakley42 min
May 27, 7:18 PM CDTSevere Thunderstorm WarningOHXCheatham, Davidson, Dickson, Rutherford, Smith, Sumner and 2 more27 min
May 27, 7:19 PM CDTSevere Thunderstorm WarningOHXFentress, Overton, Pickett26 min
May 27, 7:20 PM CDTSevere Thunderstorm WarningOHXCheatham, Davidson, Dickson, Hickman, Houston, Humphreys and 2 more25 min
May 27, 7:22 PM CDTSevere Thunderstorm WarningOHXHouston, Montgomery, Stewart23 min
May 27, 7:24 PM CDTSevere Thunderstorm WarningOHXCumberland, Overton, Putnam, White36 min
May 27, 7:39 PM CDTSevere Thunderstorm WarningMEGCrockett, Dyer, Gibson, Madison18 min
May 27, 7:41 PM CDTSevere Thunderstorm WarningOHXCheatham, Dickson, Houston, Humphreys, Montgomery, Robertson and 1 more34 min
May 27, 7:43 PM CDTSevere Thunderstorm WarningOHXClay, DeKalb, Jackson, Macon, Putnam, Smith and 2 more32 min
May 27, 7:47 PM CDTSevere Thunderstorm WarningOHXCannon, Davidson, DeKalb, Putnam, Rutherford, Smith and 2 more28 min
May 27, 7:49 PM CDTSevere Thunderstorm WarningOHXCheatham, Davidson, Dickson, Hickman, Humphreys, Williamson26 min
May 27, 7:54 PM CDTSevere Thunderstorm WarningOHXCumberland36 min
May 27, 8:00 PM CDTSevere Thunderstorm WarningMEGCrockett, Dyer, Gibson, Lauderdale24 min
May 27, 8:06 PM CDTSevere Thunderstorm WarningOHXClay, Cumberland, Fentress, Jackson, Overton, Pickett and 1 more54 min
May 27, 8:09 PM CDTSevere Thunderstorm WarningOHXCannon, Cumberland, DeKalb, Putnam, Van Buren, Warren and 1 more66 min
May 27, 8:19 PM CDTSevere Thunderstorm WarningPAHButler, Stoddard, Wayne41 min
May 27, 8:21 PM CDTTornado WarningOHXCumberland13 min
May 27, 8:25 PM CDTTornado WarningOHXCumberland, Putnam35 min
May 27, 8:26 PM CDTSevere Thunderstorm WarningOHXHickman19 min
May 27, 8:27 PM CDTTornado WarningOHXVan Buren, White21 min
May 27, 8:41 PM CDTSevere Thunderstorm WarningPAHButler, New Madrid, Stoddard34 min
May 27, 8:43 PM CDTSevere Thunderstorm WarningOHXGiles, Hickman, Lewis, Marshall, Maury32 min
May 27, 8:45 PM CDTTornado WarningOHXCumberland30 min
May 27, 8:52 PM CDTFlash Flood WarningPAHMississippi, Scott, Stoddard3 hr
May 27, 8:56 PM CDTSevere Thunderstorm WarningOHXMarshall, Maury34 min
May 27, 8:57 PM CDTSevere Thunderstorm WarningOHXCumberland, Van Buren, Warren, White18 min
May 27, 9:06 PM CDTSevere Thunderstorm WarningMEGDunklin, Pemiscot39 min
May 27, 9:14 PM CDTSevere Thunderstorm WarningMEGCarroll, Gibson, Henderson, Madison18 min
May 27, 9:14 PM CDTSevere Thunderstorm WarningOHXBedford, Giles, Marshall31 min
May 27, 9:17 PM CDTSevere Thunderstorm WarningOHXBedford, Marshall, Rutherford17 min
May 27, 9:38 PM CDTSevere Thunderstorm WarningMEGDunklin52 min
May 27, 9:55 PM CDTSevere Thunderstorm WarningMEGDunklin, Pemiscot50 min
May 27, 10:00 PM CDTSevere Thunderstorm WarningMEGCrockett, Dyer, Gibson, Haywood, Lauderdale, Madison45 min
May 27, 10:23 PM CDTSevere Thunderstorm WarningMEGDyer, Gibson, Obion, Weakley35 min
May 27, 10:34 PM CDTTornado WarningMEGHenry, Weakley11 min
May 27, 10:38 PM CDTSevere Thunderstorm WarningMEGCarroll, Crockett, Dyer, Gibson, Haywood, Lauderdale and 1 more52 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

Nashville Metro, TN (KBNA), launched 12:00Z, 10.2 hours before the alert went out and 196 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, Nashville Metro, TN at 12:00Z on 2017-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 825 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, Nashville Metro, TN at 12:00Z on 2017-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 154 square meters per square second.19395878Sfc1 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
825 J/kg
Mixed-layer CIN
-225 J/kg
Mixed-layer LCL
1026 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
154 m²/s²
0-3 km storm-relative helicity
196 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 27, 3:54 AM CDTMesoscale DiscussionSPCAlexander2 hr
May 27, 1:16 PM CDTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more59 min
May 27, 1:36 PM CDTSevere Thunderstorm WatchSPCAlexander, Clinton, Edwards, Franklin, Gallatin, Hamilton and 20 more7 hr
May 27, 3:50 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more85 min
May 27, 6:26 PM CDTSevere Thunderstorm WatchSPCMonroe, Randolph3 hr
May 26, 7:09 PM CDTSevere Thunderstorm WatchSPCBartholomew, Boone, Carroll, Clinton, Decatur, Delaware and 23 more3 hr
May 26, 9:28 PM CDTMesoscale DiscussionSPCAdams, Bartholomew, Blackford, Boone, Brown, Carroll and 34 more92 min
May 27, 12:50 PM CDTMesoscale DiscussionSPCClark, Crawford, Dearborn, Floyd, Harrison, Jackson and 9 more85 min
May 27, 3:11 PM CDTSevere Thunderstorm WatchSPCOhio, Switzerland6 hr
May 27, 4:19 AM CDTSevere Thunderstorm WatchSPCFulton6 hr
May 27, 6:12 AM CDTMesoscale DiscussionSPCFulton2 hr
May 27, 9:13 AM CDTMesoscale DiscussionSPCAdair, Allen, Barren, Bell, Clinton, Cumberland and 12 more92 min
May 27, 12:06 AM CDTSevere Thunderstorm WatchSPCBarry, Christian, Douglas, Howell, McDonald, Oregon and 4 more5 hr
May 27, 2:04 AM CDTMesoscale DiscussionSPCBarry, Christian, Douglas, Howell, McDonald, Oregon and 4 more116 min
May 27, 9:59 AM CDTMesoscale DiscussionSPCBarton, Bates, Benton, Boone, Callaway, Camden and 47 more2 hr
May 27, 12:13 PM CDTTornado WatchSPCBarry, Barton, Bates, Benton, Bollinger, Boone and 61 more7 hr
May 27, 1:12 PM CDTMesoscale DiscussionSPCBarry, Barton, Bates, Benton, Bollinger, Camden and 50 more93 min
May 27, 3:29 PM CDTMesoscale DiscussionSPCBollinger, Butler, Carter, Crawford, Dent, Howell and 14 more91 min
May 27, 4:24 PM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Dent, Iron and 8 more66 min
May 27, 5:56 PM CDTMesoscale DiscussionSPCBenton, Boone, Callaway, Camden, Cole, Cooper and 18 more64 min
May 27, 6:17 PM CDTMesoscale DiscussionSPCHowell, Oregon, Ozark, Ripley, Taney58 min
May 27, 7:49 AM CDTMesoscale DiscussionSPCBenton, Carroll, Chester, Crockett, Decatur, Dyer and 12 more86 min
May 27, 5:11 PM CDTMesoscale DiscussionSPCAnderson, Blount, Campbell, Carter, Claiborne, Cocke and 16 more64 min
May 27, 5:55 PM CDTSevere Thunderstorm WatchSPCAnderson, Bledsoe, Blount, Bradley, Campbell, Carter and 27 more9 hr

Nearby

Severe Thunderstorm Watches in Tennessee, 2017Severe Thunderstorm Watches in Kentucky, 2017Severe Thunderstorm Watches in Illinois, 2017Every severe thunderstorm watch in 2017

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.