Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 141, NWS Kansas City, MO

October 24, 2021Atchison County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at Oct 24, 2021, 1:04 AM CDT for Atchison County, Kansas. It was in force for 26 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: Oct 24, 2021, 1:04 AM CDT (06:04 UTC)
Expired: Oct 24, 2021, 1:30 AM CDT
In force: 26 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Atchison County, KS

The radar

The Topeka radar (KTWX), 94 km from the middle of the area, began a volume at 06:08 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Oct 23, 9:53 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 6.1 hours before the alert went out and 66 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 616 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 339 m²/s²
0-3 km storm-relative helicity: 493 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

140 
WUUS53 KEAX 240604
SVREAX
KSC005-240630-
/O.NEW.KEAX.SV.W.0141.211024T0604Z-211024T0630Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
104 AM CDT Sun Oct 24 2021

The National Weather Service in Pleasant Hill has issued a

* Severe Thunderstorm Warning for...
  Western Atchison County in northeastern Kansas...

* Until 130 AM CDT.

* At 103 AM CDT, a severe thunderstorm was located near Muscotah, or
  9 miles east of Holton, moving northeast at 40 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Atchison, Effingham, Lancaster, Muscotah, Farmington, Huron and
  Arrington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3963 9556 3965 9541 3965 9517 3953 9519
      3943 9557 3950 9557
TIME...MOT...LOC 0603Z 246DEG 36KT 3950 9556 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

Blair

1 follow-up statement

291 
WWUS53 KEAX 240627
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
127 AM CDT Sun Oct 24 2021

KSC005-240636-
/O.EXP.KEAX.SV.W.0141.000000T0000Z-211024T0630Z/
Atchison KS-
127 AM CDT Sun Oct 24 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN ATCHISON COUNTY WILL
EXPIRE AT 130 AM 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 
to penny size is still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
northeastern Kansas and northern Missouri. 

LAT...LON 3963 9556 3965 9541 3965 9517 3953 9519
      3943 9557 3950 9557
TIME...MOT...LOC 0626Z 246DEG 36KT 3959 9530 

$$

Blair

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 24, 1:26 AM CDT	Special Weather Statement	EAX	Doniphan	34 min
Oct 24, 7:34 AM CDT	Special Weather Statement	EAX	Linn	26 min
Oct 24, 7:53 AM CDT	Special Weather Statement	EAX	Linn	37 min
Oct 24, 2:05 PM CDT	Severe Thunderstorm Warning	EAX	Doniphan	40 min
Oct 24, 2:12 PM CDT	Tornado Warning Tornado observed	EAX	Doniphan	33 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.