Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 27, NWS Topeka, KS

May 16, 2021Lyon County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at May 16, 2021, 1:32 PM CDT for Lyon County, Kansas. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 16, 2021, 1:32 PM CDT (18:32 UTC)
Expired: May 16, 2021, 2:00 PM CDT
In force: 28 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

County Lyon County, KS

The radar

The Topeka radar (KTWX), 61 km from the middle of the area, began a volume at 18:31 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 nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 6.5 hours before the alert went out and 265 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: 122 J/kg
Mixed-layer CIN: -133 J/kg
Mixed-layer LCL: 1041 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 85 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

549 
WUUS53 KTOP 161832
SVRTOP
KSC111-161900-
/O.NEW.KTOP.SV.W.0027.210516T1832Z-210516T1900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
132 PM CDT Sun May 16 2021

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  East central Lyon County in east central Kansas...

* Until 200 PM CDT.

* At 131 PM CDT, a severe thunderstorm was located 5 miles northeast
  of Emporia, moving northeast at 10 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Reading.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Intense thunderstorms can produce brief tornadoes. Although a 
tornado is not immediately likely, it is best to move to an interior 
room on the lowest floor of a building. This storm may cause serious 
injury and significant property damage.

&&

LAT...LON 3838 9612 3844 9620 3869 9595 3845 9595
TIME...MOT...LOC 1831Z 226DEG 7KT 3845 9610 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

Skow

1 follow-up statement

992 
WWUS53 KTOP 161859
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
159 PM CDT Sun May 16 2021

KSC111-161909-
/O.EXP.KTOP.SV.W.0027.000000T0000Z-210516T1900Z/
Lyon-
159 PM CDT Sun May 16 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LYON COUNTY WILL
EXPIRE AT 200 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.

LAT...LON 3838 9612 3844 9620 3869 9595 3845 9595
TIME...MOT...LOC 1859Z 226DEG 7KT 3849 9605 

$$

Skow

The office that day

Everything else NWS Topeka, KS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 16, 12:26 AM CDT	Special Weather Statement	TOP	Dickinson	34 min
May 16, 12:35 AM CDT	Special Weather Statement	TOP	Ottawa	25 min
May 16, 1:05 AM CDT	Special Weather Statement	TOP	Lyon	25 min
May 16, 1:08 AM CDT	Special Weather Statement	TOP	Dickinson	37 min
May 16, 1:36 AM CDT	Areal Flood Advisory	TOP	Ottawa	3 hr
May 16, 2:31 AM CDT	Flash Flood Warning	TOP	Ottawa	6 hr
May 16, 7:11 AM CDT	Areal Flood Advisory	TOP	Geary, Wabaunsee	3 hr
May 16, 7:15 AM CDT	Areal Flood Advisory	TOP	Lyon	3 hr
May 16, 8:38 AM CDT	Areal Flood Warning	TOP	Ottawa	9 hr
May 16, 8:55 AM CDT	Areal Flood Advisory	TOP	Lyon	3 hr
May 16, 9:06 AM CDT	Areal Flood Advisory	TOP	Osage, Shawnee, Wabaunsee	3 hr
May 16, 9:31 AM CDT	River Flood Warning	TOP	Osage	28 hr
May 16, 9:31 AM CDT	River Flood Warning	TOP	Lyon, Osage	28 hr
May 16, 9:43 AM CDT	Areal Flood Advisory	TOP	Douglas, Franklin	3 hr
May 16, 10:14 AM CDT	Flash Flood Warning	TOP	Geary, Lyon, Morris, Wabaunsee	4 hr
May 16, 10:18 AM CDT	River Flood Warning	TOP	Franklin, Osage	46 hr
May 16, 11:21 AM CDT	River Flood Warning	TOP	Franklin	62 hr
May 16, 11:38 AM CDT	River Flood Warning	TOP	Wabaunsee	16 hr
May 16, 11:59 AM CDT	River Flood Warning	TOP	Ottawa, Saline	3 days
May 16, 12:02 PM CDT	Areal Flood Advisory	TOP	Shawnee, Wabaunsee	3 hr
May 16, 2:07 PM CDT	Areal Flood Warning	TOP	Geary, Lyon, Morris, Wabaunsee	10 hr
May 16, 2:41 PM CDT	Special Weather Statement	TOP	Lyon	34 min
May 16, 3:14 PM CDT	River Flood Warning	TOP	Dickinson, Ottawa, Saline	16 hr
May 16, 3:24 PM CDT	Special Weather Statement	TOP	Osage	36 min
May 16, 3:46 PM CDT	Special Weather Statement	TOP	Osage	29 min
May 16, 4:18 PM CDT	Special Weather Statement	TOP	Franklin	27 min
May 16, 4:22 PM CDT	Flash Flood Warning	TOP	Cloud	2 hr
May 16, 5:33 PM CDT	Areal Flood Advisory	TOP	Anderson, Coffey, Franklin, Lyon, Morris, Osage	2 hr
May 16, 6:20 PM CDT	Special Weather Statement	TOP	Franklin	25 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2021 Every severe thunderstorm warning 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.