Alert archive / Kansas / Tornado Watches in 2021

Tornado Watch 524

October 12, 202131 counties in Kansas

The Storm Prediction Center issued this tornado watch at Oct 12, 2021, 9:35 PM CDT for 31 counties in Kansas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Oct 12, 2021, 9:35 PM CDT (02:35 UTC)
Expired
Oct 13, 2021, 5:00 AM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
70 kt
All 31 counties

Barber County, KS, Barton County, KS, Butler County, KS, Chase County, KS, Clark County, KS, Comanche County, KS, Cowley County, KS, Edwards County, KS, Ellis County, KS, Ellsworth County, KS, Ford County, KS, Harper County, KS, Harvey County, KS, Hodgeman County, KS, Kingman County, KS, Kiowa County, KS, Lincoln County, KS, Marion County, KS, McPherson County, KS, Ness County, KS, Pawnee County, KS, Pratt County, KS, Reno County, KS, Rice County, KS, Rush County, KS, Russell County, KS, Saline County, KS, Sedgwick County, KS, Stafford County, KS, Sumner County, KS, Trego County, KS

The radar

The Wichita radar (KICT), 117 km from the middle of the area, began a volume at 02:38 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
80%
One or more gusts of 65 knots or more
50%
Ten or more severe hail reports
20%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Oct 12, 9:46 PM CDTSevere Thunderstorm Warning Considerable damage threatDDCFinney, Ford, Gray, Haskell, Hodgeman, Meade and 1 more44 min
Oct 12, 10:02 PM CDTSevere Thunderstorm Warning Considerable damage threatDDCFinney, Hodgeman, Lane, Ness21 min
Oct 12, 10:04 PM CDTTornado WarningDDCFord, Gray11 min
Oct 12, 10:14 PM CDTTornado WarningDDCFord31 min
Oct 12, 10:20 PM CDTSevere Thunderstorm Warning Considerable damage threatDDCClark, Finney, Ford, Gray, Hodgeman, Meade40 min
Oct 12, 10:21 PM CDTSevere Thunderstorm Warning Considerable damage threatDDCHodgeman, Ness39 min
Oct 12, 10:36 PM CDTTornado WarningDDCFord, Hodgeman24 min
Oct 12, 10:47 PM CDTSevere Thunderstorm Warning Considerable damage threatDDCEdwards, Ellis, Hodgeman, Ness, Pawnee, Rush58 min
Oct 12, 10:51 PM CDTSevere Thunderstorm Warning Considerable damage threatDDCEdwards, Ford, Hodgeman, Kiowa54 min
Oct 12, 10:53 PM CDTSevere Thunderstorm Warning Considerable damage threatDDCClark, Comanche, Ford, Kiowa, Meade67 min
Oct 12, 10:58 PM CDTTornado WarningDDCClark, Meade17 min
Oct 12, 11:13 PM CDTTornado WarningDDCClark, Ford, Kiowa32 min
Oct 12, 11:20 PM CDTSevere Thunderstorm Warning Considerable damage threatICTBarton, Russell70 min
Oct 12, 11:41 PM CDTSevere Thunderstorm WarningDDCEdwards, Kiowa, Pawnee, Pratt, Stafford38 min
Oct 12, 11:44 PM CDTSevere Thunderstorm WarningDDCClark, Comanche, Kiowa35 min
Oct 13, 12:12 AM CDTTornado WarningDDCEdwards, Pawnee, Stafford18 min
Oct 13, 12:17 AM CDTSevere Thunderstorm Warning Destructive damage threatDDCBarber, Comanche, Edwards, Kiowa, Pawnee, Pratt and 1 more58 min
Oct 13, 12:45 AM CDTSevere Thunderstorm Warning Considerable damage threatICTReno, Rice60 min
Oct 13, 1:09 AM CDTSevere Thunderstorm Warning Considerable damage threatDDCBarber, Comanche, Pratt, Stafford66 min
Oct 13, 3:14 AM CDTSevere Thunderstorm WarningICTButler, Harvey, Sedgwick76 min
Oct 13, 3:38 AM CDTSevere Thunderstorm WarningICTSumner67 min
Oct 13, 4:01 AM CDTSevere Thunderstorm WarningICTCowley52 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

Dodge City, (KDDC), launched 00:00Z, 2.6 hours before the alert went out and 132 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, Dodge City, at 00:00Z on 2021-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 441 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Dodge City, at 00:00Z on 2021-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 383 square meters per square second.1939587897117Sfc1 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
441 J/kg
Mixed-layer CIN
-298 J/kg
Mixed-layer LCL
585 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
383 m²/s²
0-3 km storm-relative helicity
374 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

325 
WWUS20 KWNS 130232
SEL4  
SPC WW 130232
KSZ000-131000-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 524
NWS Storm Prediction Center Norman OK
935 PM CDT Tue Oct 12 2021

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Western and Central Kansas

* Effective this Tuesday night and Wednesday morning from 935 PM
  until 500 AM CDT.

* Primary threats include...
  A few tornadoes possible
  Widespread damaging winds likely with isolated significant gusts
    to 80 mph possible
  Isolated large hail events to 1.5 inches in diameter possible

SUMMARY...A nearly continuous line of storms will continue to
progress east-northeastward across western/central Kansas late this
evening into the overnight. Damaging winds will be the most
prevalent concern, but strengthening low-level shear and a
moistening environment will also support the possibility of a few
tornadoes with the quasi-linear storms.

The tornado watch area is approximately along and 75 statute miles
east and west of a line from 20 miles north northwest of Russell KS
to 20 miles south of Medicine Lodge KS. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU4).

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 522...WW 523...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 21040.

...Guyer

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 12, 8:56 PM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Edwards, Ellis, Ellsworth and 19 more64 min
Oct 12, 10:40 PM CDTSevere Thunderstorm WatchSPCClay, Cloud, Dickinson, Geary, Jewell, Mitchell and 9 more6 hr
Oct 12, 11:34 PM CDTMesoscale DiscussionSPCBarber, Barton, Comanche, Edwards, Ellsworth, Harper and 13 more86 min
Oct 13, 12:54 AM CDTMesoscale DiscussionSPCClay, Cloud, Jewell, Mitchell, Republic, Washington96 min
Oct 13, 1:52 AM CDTMesoscale DiscussionSPCBarber, Butler, Chase, Cowley, Harper, Harvey and 7 more83 min
Oct 13, 2:54 AM CDTMesoscale DiscussionSPCDickinson, Geary, Marshall, Morris, Pottawatomie, Riley and 2 more96 min
Oct 13, 3:26 AM CDTMesoscale DiscussionSPCButler, Chase, Cowley, Marion, Sedgwick, Sumner94 min
Oct 13, 5:16 AM CDTMesoscale DiscussionSPCChautauqua, Elk, Labette, Montgomery, Neosho, Wilson and 1 more59 min
Oct 13, 7:34 AM CDTMesoscale DiscussionSPCBourbon, Cherokee, Crawford, Labette, Linn116 min

Nearby

Tornado Watches in Kansas, 2021Every tornado watch in 2021

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.