Alert archive / Missouri / Tornado Watches in 2019

Tornado Watch 182

May 18, 201917 counties in Kansas; 28 counties in Missouri

The Storm Prediction Center issued this tornado watch at May 18, 2019, 10:07 AM CDT for 17 counties in Kansas; 28 counties in Missouri. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
May 18, 2019, 10:07 AM CDT (15:07 UTC)
Expired
May 18, 2019, 5:00 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 45 counties

Allen County, KS, Anderson County, KS, Bourbon County, KS, Butler County, KS, Chautauqua County, KS, Cherokee County, KS, Coffey County, KS, Cowley County, KS, Crawford County, KS, Elk County, KS, Greenwood County, KS, Labette County, KS, Linn County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Woodson County, KS, Barry County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Camden County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Douglas County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, McDonald County, MO, Morgan County, MO, Newton County, MO, Ozark County, MO, Pettis County, MO, Polk County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Vernon County, MO, Webster County, MO, Wright County, MO

The radar

The Tulsa radar (KINX), 155 km from the middle of the area, began a volume at 15:08 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
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
60%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
50%
One or more hailstones of 2 inches or more
10%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 18, 10:45 AM CDTSevere Thunderstorm WarningICTLabette20 min
May 18, 10:55 AM CDTSevere Thunderstorm WarningICTButler, Elk, Greenwood50 min
May 18, 11:00 AM CDTSevere Thunderstorm WarningTOPAnderson, Franklin20 min
May 18, 11:11 AM CDTSevere Thunderstorm WarningICTButler, Chase, Greenwood49 min
May 18, 11:16 AM CDTSevere Thunderstorm WarningICTChautauqua, Elk, Montgomery, Wilson44 min
May 18, 1:01 PM CDTSevere Thunderstorm WarningSGFCherokee44 min
May 18, 1:13 PM CDTSevere Thunderstorm WarningSGFBourbon, Cherokee, Crawford47 min
May 18, 1:55 PM CDTSevere Thunderstorm WarningSGFBourbon, Crawford65 min
May 18, 2:10 PM CDTSevere Thunderstorm WarningEAXBates, Cass35 min
May 18, 2:46 PM CDTSevere Thunderstorm WarningSGFBenton, Cedar, Hickory, St. Clair, Vernon44 min
May 18, 2:49 PM CDTSevere Thunderstorm WarningSGFBarton, Cedar, Dade, Greene, Jasper, Lawrence41 min
May 18, 2:54 PM CDTSevere Thunderstorm WarningSGFBarry, Christian, Stone, Taney51 min
May 18, 3:18 PM CDTSevere Thunderstorm WarningSGFCedar, Christian, Dade, Greene, Lawrence, Polk28 min
May 18, 3:28 PM CDTSevere Thunderstorm WarningEAXCarroll, Johnson, Lafayette, Pettis, Saline47 min
May 18, 3:33 PM CDTSevere Thunderstorm WarningSGFBenton, Hickory, St. Clair42 min
May 18, 3:38 PM CDTSevere Thunderstorm WarningSGFBenton, Camden, Cedar, Dallas, Greene, Hickory and 5 more52 min
May 18, 3:40 PM CDTSevere Thunderstorm WarningSGFChristian, Douglas, Greene, Ozark, Stone, Taney and 1 more50 min
May 18, 4:25 PM CDTSevere Thunderstorm WarningSGFDouglas, Howell, Laclede, Ozark, Pulaski, Texas and 2 more50 min
May 18, 4:47 PM CDTSevere Thunderstorm WarningSGFCamden, Laclede, Maries, Miller, Morgan, Pulaski58 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

Topeka, KS (KFOE), launched 12:00Z, 3.1 hours before the alert went out and 159 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, Topeka, KS at 12:00Z on 2019-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Topeka, KS at 12:00Z on 2019-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -142 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
925 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
-142 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.5

Open this sounding in Storm Lab

The text

As transmitted.

988 
WWUS20 KWNS 181504
SEL2  
SPC WW 181504
KSZ000-MOZ000-182200-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 182
NWS Storm Prediction Center Norman OK
1010 AM CDT Sat May 18 2019

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Southeast Kansas
  Southwest Missouri

* Effective this Saturday morning and afternoon from 1010 AM
  until 500 PM CDT.

* Primary threats include...
  A couple tornadoes possible
  Scattered damaging wind gusts to 70 mph likely
  Scattered large hail events to 1.5 inches in diameter possible

SUMMARY...Thunderstorms will continue to develop and spread across
the watch area through the day.  Favorable wind fields and
instability will pose a risk of a few severe storms capable of
damaging wind gusts and a tornado or two.

The tornado watch area is approximately along and 50 statute miles
north and south of a line from 40 miles north of Ponca City OK to 30
miles north northeast of Springfield MO. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU2).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 181...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 23035.

...Hart

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 17, 7:00 PM CDTMesoscale DiscussionSPCClark, Finney, Ford, Gray, Haskell, Hodgeman and 2 more2 hr
May 17, 7:39 PM CDTSevere Thunderstorm WatchSPCBarton, Clark, Comanche, Edwards, Ellis, Ford and 11 more3 hr
May 17, 8:52 PM CDTTornado WatchSPCBarton, Clark, Comanche, Edwards, Ellis, Ellsworth and 15 more5 hr
May 17, 9:55 PM CDTMesoscale DiscussionSPCEdwards65 min
May 17, 10:35 PM CDTTornado WatchSPCClay, Cloud, Dickinson, Jewell, Mitchell, Osborne and 3 more3 hr
May 17, 11:14 PM CDTMesoscale DiscussionSPCBarton, Clay, Cloud, Dickinson, Ellis, Ellsworth and 30 more2 hr
May 17, 11:45 PM CDTSevere Thunderstorm WatchSPCGeary, Marshall, Nemaha, Pottawatomie, Riley3 hr
May 18, 7:47 AM CDTMesoscale DiscussionSPCButler, Chautauqua, Cowley, Elk, Greenwood, Harper and 6 more88 min
May 18, 9:38 AM CDTMesoscale DiscussionSPCAllen, Bourbon, Chautauqua, Cherokee, Crawford, Elk and 4 more2 hr
May 18, 3:31 PM CDTMesoscale DiscussionSPCBarber, Clark, Comanche, Edwards, Ford, Gray and 6 more119 min
May 18, 3:48 PM CDTSevere Thunderstorm WatchSPCBarber, Clark, Comanche, Edwards, Ellsworth, Ford and 16 more6 hr
May 18, 6:07 PM CDTMesoscale DiscussionSPCBarber, Butler, Clark, Comanche, Cowley, Edwards and 12 more83 min
May 18, 12:47 PM CDTMesoscale DiscussionSPCBarry, Barton, Bates, Benton, Camden, Cedar and 27 more88 min
May 18, 3:32 PM CDTMesoscale DiscussionSPCCallaway, Camden, Carter, Christian, Cole, Crawford and 23 more88 min
May 18, 4:40 PM CDTSevere Thunderstorm WatchSPCAudrain, Bollinger, Boone, Butler, Callaway, Carter and 35 more4 hr
May 18, 6:19 PM CDTMesoscale DiscussionSPCDunklin, Pemiscot116 min
May 18, 6:59 PM CDTMesoscale DiscussionSPCClark, Knox, Lewis, Marion, Scotland2 hr
May 18, 1:35 AM CDTMesoscale DiscussionSPCCarter, Comanche, Cotton, Garvin, Grady, Jefferson and 2 more2 hr
May 18, 2:20 AM CDTTornado WatchSPCCarter, Cleveland, Comanche, Cotton, Garvin, Grady and 9 more8 hr
May 18, 5:11 AM CDTMesoscale DiscussionSPCCarter, Comanche, Cotton, Garvin, Jefferson, Love and 3 more2 hr
May 18, 6:51 AM CDTMesoscale DiscussionSPCCarter, Cleveland, Coal, Cotton, Garvin, Grady and 11 more114 min
May 18, 9:10 AM CDTTornado WatchSPCAdair, Atoka, Bryan, Cherokee, Choctaw, Coal and 27 more8 hr
May 18, 12:11 PM CDTMesoscale DiscussionSPCChoctaw, Latimer, LeFlore, McCurtain, Pushmataha64 min
May 18, 12:48 PM CDTTornado WatchSPCMcCurtain7 hr

Nearby

Tornado Watches in Missouri, 2019Tornado Watches in Kansas, 2019Every tornado watch in 2019

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.