Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 51, NWS Kansas City, MO

June 24, 2021Atchison County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 24, 2021, 3:28 AM CDT for Atchison County, Missouri. It was in force for 47 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
Jun 24, 2021, 3:28 AM CDT (08:28 UTC)
Expired
Jun 24, 2021, 4:15 AM CDT
In force
47 min
Issued by
NWS Kansas City, MO
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Atchison County, MO

The radar

The Omaha radar (KOAX), 120 km from the middle of the area, began a volume at 08:29 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.

IssuedProductOfficeLasted
Jun 24, 2:20 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 8.5 hours before the alert went out and 120 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, Omaha, NE at 00:00Z on 2021-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2039 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, Omaha, NE at 00:00Z on 2021-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.193958Sfc1 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
2039 J/kg
Mixed-layer CIN
-306 J/kg
Mixed-layer LCL
1664 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
168 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted.

550 
WUUS53 KEAX 240828
SVREAX
MOC005-240915-
/O.NEW.KEAX.SV.W.0051.210624T0828Z-210624T0915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
328 AM CDT Thu Jun 24 2021

The National Weather Service in Pleasant Hill has issued a

* Severe Thunderstorm Warning for...
  Atchison County in northwestern Missouri...

* Until 415 AM CDT.

* At 328 AM CDT, severe thunderstorms were located along a line
  extending from 6 miles northwest of Hamburg to near Tecumseh,
  moving southeast at 45 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...
  Rock Port, Tarkio and Fairfax.

This includes Interstate 29 between mile markers 100 and 123.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4058 9520 4041 9518 4027 9518 4026 9555
      4030 9556 4032 9561 4031 9565 4032 9566
      4034 9562 4041 9566 4046 9564 4046 9568
      4048 9570 4054 9565 4056 9568 4052 9571
      4052 9575 4058 9577
TIME...MOT...LOC 0828Z 324DEG 39KT 4067 9574 4029 9617 

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

BT
1 follow-up statement
483 
WWUS53 KEAX 240907
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
407 AM CDT Thu Jun 24 2021

MOC005-240915-
/O.CON.KEAX.SV.W.0051.000000T0000Z-210624T0915Z/
Atchison MO-
407 AM CDT Thu Jun 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 AM CDT
FOR ATCHISON COUNTY...

At 406 AM CDT, severe thunderstorms were located along a line
extending from near Fairfax to near Bern, moving southeast at 45 mph.

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

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Tarkio, Rock Port, Fairfax, Westboro, Watson, Blanchard, Indian Cave
State Park and Phelps City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4058 9520 4041 9518 4027 9518 4026 9555
      4030 9556 4032 9561 4031 9565 4032 9566
      4034 9562 4041 9566 4046 9564 4046 9568
      4048 9570 4054 9565 4056 9568 4052 9571
      4052 9575 4058 9577
TIME...MOT...LOC 0906Z 324DEG 39KT 4037 9546 3999 9589 

HAIL...0.75IN
WIND...60MPH
 
$$

PP

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 4:14 AM CDTSevere Thunderstorm WarningEAXAtchison, Holt, Nodaway28 min
Jun 24, 9:30 AM CDTSevere Thunderstorm WarningEAXCooper, Howard, Saline45 min
Jun 24, 11:08 AM CDTSpecial Weather StatementEAXBates37 min
Jun 24, 11:20 AM CDTRiver Flood WarningEAXLinn, Livingston4 days
Jun 24, 11:20 AM CDTRiver Flood WarningEAXDaviess, Livingston3 days
Jun 24, 11:20 AM CDTRiver Flood WarningEAXPlatte21 days
Jun 24, 11:20 AM CDTRiver Flood WarningEAXPlatte7 days
Jun 24, 11:20 AM CDTRiver Flood WarningEAXRay3 days
Jun 24, 11:20 AM CDTRiver Flood WarningEAXHoward51 hr
Jun 24, 11:20 AM CDTRiver Flood WarningEAXBuchanan4 days
Jun 24, 11:20 AM CDTRiver Flood WarningEAXDaviess, Gentry51 hr
Jun 24, 11:20 AM CDTRiver Flood WarningEAXCarroll, Chariton, Linn, Livingston10 days
Jun 24, 6:32 PM CDTFlash Flood WarningEAXAndrew, Atchison, Holt, Nodaway8 hr
Jun 24, 6:53 PM CDTSevere Thunderstorm WarningEAXAtchison, Holt, Nodaway52 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2021Every 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.