Alert archive / Kansas / Tornado Warnings in 2022

Tornado Warning 13, NWS Kansas City, MO

April 29, 2022Atchison County, Kansas

NWS Kansas City, MO issued this tornado warning at Apr 29, 2022, 9:01 PM CDT for Atchison County, Kansas. It was in force for 29 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 29, 2022, 9:01 PM CDT (02:01 UTC)
Expired: Apr 29, 2022, 9:30 PM CDT
In force: 29 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

County Atchison County, KS

The radar

The Topeka radar (KTWX), 98 km from the middle of the area, began a volume at 02:04 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 was reported inside it

Time	Report	Where
Apr 29, 9:13 PM CDT	HAIL 0.7	4 E Arrington, KS
Apr 29, 9:20 PM CDT	HAIL 0.7	4 S Effingham, KS
Apr 29, 9:32 PM CDT	HAIL 0.7	3 W Cummings, KS

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 29, 8:34 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 2.0 hours before the alert went out and 64 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: 1788 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 1073 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 225 m²/s²
0-3 km storm-relative helicity: 342 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 14.3

Open this sounding in Storm Lab

The text

As transmitted.

545 
WFUS53 KEAX 300201
TOREAX
KSC005-300230-
/O.NEW.KEAX.TO.W.0013.220430T0201Z-220430T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Kansas City/Pleasant Hill MO
901 PM CDT Fri Apr 29 2022

The National Weather Service in Pleasant Hill has issued a

* Tornado Warning for...
  Atchison County in northeastern Kansas...

* Until 930 PM CDT.
    
* At 901 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Denison, or 7 miles northwest of Valley Falls,
  moving northeast at 45 mph.

  HAZARD...Tornado and half dollar size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Atchison, Effingham, Lancaster, Farmington, Cummings, Arrington and
  Potter.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3948 9557 3966 9522 3965 9520 3954 9511
      3944 9501 3942 9516 3942 9557
TIME...MOT...LOC 0201Z 247DEG 38KT 3942 9555 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.25 IN

$$

Blair

1 follow-up statement

912 
WWUS53 KEAX 300213
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
913 PM CDT Fri Apr 29 2022

KSC005-300230-
/O.CON.KEAX.TO.W.0013.000000T0000Z-220430T0230Z/
Atchison KS-
913 PM CDT Fri Apr 29 2022

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR
SOUTHEASTERN ATCHISON COUNTY...
    
At 912 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Effingham, or 9 miles north of Valley Falls, moving
northeast at 45 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Atchison, Effingham, Lancaster, Farmington, Cummings and Potter. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3949 9549 3963 9518 3954 9511 3944 9501
      3942 9516 3942 9548
TIME...MOT...LOC 0212Z 247DEG 38KT 3947 9540 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Blair

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 29, 8:45 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Doniphan	45 min
Apr 29, 9:18 PM CDT	Special Weather Statement	EAX	Johnson, Miami	27 min
Apr 29, 9:24 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Doniphan	51 min
Apr 29, 9:29 PM CDT	Tornado Warning	EAX	Atchison, Doniphan	21 min
Apr 29, 9:58 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Leavenworth, Miami, Wyandotte	47 min
Apr 29, 10:16 PM CDT	Severe Thunderstorm Warning	EAX	Linn, Miami	29 min
Apr 29, 10:44 PM CDT	Severe Thunderstorm Warning	EAX	Linn, Miami	46 min
Apr 29, 11:08 PM CDT	Areal Flood Advisory	EAX	Johnson, Miami	3 hr

Nearby

Tornado Warnings in Kansas, 2022 Every tornado warning in 2022 Tornadoes in 2022

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.