Alert archive / Missouri / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 14, NWS Kansas City, MO

March 27, 2020Cooper County, Pettis County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Mar 27, 2020, 2:52 AM CDT for Cooper County, Pettis County, Missouri. It was in force for 31 min. 1 report 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: Mar 27, 2020, 2:52 AM CDT (07:52 UTC)
Expired: Mar 27, 2020, 3:23 AM CDT
In force: 31 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Cooper County, MO, Pettis County, MO

The radar

The Pleasant Hill radar (KEAX), 115 km from the middle of the area, began a volume at 07:53 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	Remark
Mar 27, 3:00 AM CDT	HAIL 1	Sedalia, MO	PEA TO QUARTER SIZED HAIL REPORTED AT WALMART AND 50 HIGHWAY IN SEDALIA.

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 8 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
Mar 26, 10:27 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 7.9 hours before the alert went out and 215 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: 585 J/kg
Mixed-layer CIN: -163 J/kg
Mixed-layer LCL: 1868 m above ground
0-6 km bulk shear: 78 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 236 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.4

Open this sounding in Storm Lab

The text

As transmitted.

462 
WUUS53 KEAX 270752
SVREAX
MOC053-159-270845-
/O.NEW.KEAX.SV.W.0014.200327T0752Z-200327T0845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
252 AM CDT Fri Mar 27 2020

The National Weather Service in Pleasant Hill has issued a

* Severe Thunderstorm Warning for...
  East central Pettis County in central Missouri...
  Southern Cooper County in central Missouri...

* Until 345 AM CDT.

* At 252 AM CDT, a severe thunderstorm was located over Sedalia,
  moving east at 50 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Sedalia, Smithton, Otterville, Bunceton, Prairie Home, Sedalia
  Memorial Arpt and Clifton City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3868 9262 3869 9298 3870 9306 3865 9307
      3865 9334 3881 9335 3886 9253
TIME...MOT...LOC 0752Z 266DEG 45KT 3873 9324 

HAIL...1.00IN
WIND...<50MPH
 
$$

Barham

3 follow-up statements

166 
WWUS53 KEAX 270802
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
302 AM CDT Fri Mar 27 2020

MOC053-159-270845-
/O.CON.KEAX.SV.W.0014.000000T0000Z-200327T0845Z/
Pettis MO-Cooper MO-
302 AM CDT Fri Mar 27 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM CDT
FOR EAST CENTRAL PETTIS AND SOUTHERN COOPER COUNTIES...

At 302 AM CDT, a severe thunderstorm was located near Smithton, or 8
miles east of Sedalia, moving east at 50 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Sedalia, Smithton, Otterville, Bunceton, Prairie Home, Sedalia
Memorial Arpt and Clifton City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3868 9262 3869 9298 3870 9306 3865 9307
      3865 9321 3882 9322 3886 9253
TIME...MOT...LOC 0802Z 266DEG 45KT 3874 9308 

HAIL...1.00IN
WIND...<50MPH
 
$$

Barham

172 
WWUS53 KEAX 270809
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
309 AM CDT Fri Mar 27 2020

MOC159-270819-
/O.CAN.KEAX.SV.W.0014.000000T0000Z-200327T0845Z/
Pettis MO-
309 AM CDT Fri Mar 27 2020

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PETTIS COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
central Missouri.

LAT...LON 3868 9262 3869 9298 3870 9304 3883 9304
      3886 9253
TIME...MOT...LOC 0809Z 265DEG 51KT 3876 9293 

$$

MOC053-270845-
/O.CON.KEAX.SV.W.0014.000000T0000Z-200327T0845Z/
Cooper MO-
309 AM CDT Fri Mar 27 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM CDT
FOR SOUTHERN COOPER COUNTY...

At 309 AM CDT, a severe thunderstorm was located near Otterville, or
11 miles northwest of Tipton, moving east at 60 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Otterville, Bunceton and Prairie Home. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3868 9262 3869 9298 3870 9304 3883 9304
      3886 9253
TIME...MOT...LOC 0809Z 265DEG 51KT 3876 9293 

HAIL...1.00IN
WIND...<50MPH
 
$$

Barham

053 
WWUS53 KEAX 270823
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
323 AM CDT Fri Mar 27 2020

MOC053-270832-
/O.CAN.KEAX.SV.W.0014.000000T0000Z-200327T0845Z/
Cooper MO-
323 AM CDT Fri Mar 27 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN COOPER COUNTY IS
CANCELLED...
                
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 has been cancelled.  However heavy rain is
still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
central Missouri.

LAT...LON 3868 9262 3869 9298 3870 9304 3883 9304
      3886 9253
TIME...MOT...LOC 0821Z 266DEG 45KT 3877 9271 

$$

Barham

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Kansas City, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 27, 12:02 AM CDT, 2 hours 50 minutes earlier.

Area forecast discussion, Mar 27, 12:02 AM CDT, 2 hours 50 minutes before

AREA FORECAST DISCUSSION
National Weather Service Kansas City/Pleasant Hill MO
1202 AM CDT Fri Mar 27 2020

.Discussion...
Issued at 227 PM CDT THU MAR 26 2020

The forecast focus is for strong to severe thunderstorms tonight
through Friday morning. And another round of strong to severe
thunderstorms Friday evening through Saturday morning. Then gusty
winds on Saturday.

Key Messages...

1. Strong to severe thunderstorms expected from 10 PM through
tomorrow morning hail up to the size of half dollars (1.5") will
be main threat mainly along and south of the Missouri River.
Localized heavy rain may lead to isolated flash flooding.

2. Another round of strong to severe thunderstorms expected from
Friday evening through Saturday morning large hail, damaging winds,
and an isolated tornado are possible mainly across eastern KS/
western MO including the Metro area. Localized heavy rain may lead
to isolated flash flooding.

3. Strong winds behind cold front on Saturday.

Discussion...

At the surface a quasi-stationary frontal system is draped across
southern Kansas into Missouri near the Missouri River. The upper
levels feature a low over the SW US and broad ridging across the
Midwest with southwesterly flow over the Plains. Satellite showing
clouds north of Missouri River with clearing to the south along the
frontal boundary. Tonight a LLJ will develop and nose into southern
KS over-riding the frontal boundary. This will allow elevated
convection to develop which will be capable of producing large hail.
As, the overnight progresses the LLJ will shift east nosing into the
local area near midnight. Steep mid level lapse rates and modest
instability between 500-1000 J/Kg MUCAPE across the southern CWA
will allow the chance for a few severe storms capable of large hail
possible along and south of the Missouri River. Storms will weaken
but will continue through Friday morning as the LLJ weakens. Friday
it will be mostly dry as the warm front lifts to the north in
response to upper level low pushing towards Plains, however a few
showers are possible through the afternoon hours mainly across
northern Missouri.

Friday evening and Saturday morning another round of strong to
severe storms with large hail, damaging winds, and an isolated
tornado possible mainly across eastern Kansas and western Missouri
including the Metro area. LLJ will crank up again intersecting the
warm front in northern Missouri while the upper level trough to west
will create a surface low across northern Kansas with a couple of
storms forming near dryline in Kansas as it pushes east Friday
evening and Saturday morning. MUCAPE will approach 1500-2000 J/kg
and effective shear of 40 to 50 knots. Storms that form in warm
sector will likely be near surface based and discrete supercells.
The storms farther north near warm front will be elevated and more
numerous in coverage. Saturday morning dryline will push east and
storms will move out of the area. Winds will be strong from
southwest eventually turning west to northwest, wind advisories are
possible on Saturday.

Sunday and Monday will be dry with temperatures above normal. Next
chance of precipitation possible Monday evening as the next system
approaches.

&&

.Aviation...(For the 06Z TAFS through 06Z Friday Night)
Issued at 1202 AM CDT THU MAR 26 2020

A line of storms has developed along the I-70 corridor, impacting
or about to impact the KC terminals. This line of storms will move
east along I-70, eventually moving out of the area around 09Z-10Z.
MVFR/IFR ceilings will start to develop north of the MO River
within the next couple of hours, and will eventually move south
behind the storms. The entire area is expected to under IFR
ceilings around dawn, with some lower visibilities. Patchy drizzle
is possible during the morning hours as well. Conditions will
gradually improve up to about HWY 36 during the day tomorrow as
the surface low and warm front lift north. Storm chances will
start to increase at the tail end of the TAF period as the main
low pressure system moves through the area.

&&

.EAX WATCHES/WARNINGS/ADVISORIES...
KS...NONE.
MO...NONE.
&&

Discussion...Christensen
Aviation...Atkins

Hazardous weather outlook, Mar 26, 4:48 AM CDT, 22 hours 4 minutes before

Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
448 AM CDT Thu Mar 26 2020

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-271000-
Atchison KS-Miami-Linn KS-Doniphan-Leavenworth-Wyandotte-Johnson KS-
Atchison MO-Nodaway-Worth-Gentry-Harrison-Mercer-Putnam-Schuyler-
Holt-Andrew-De Kalb-Daviess-Grundy-Sullivan-Adair-Buchanan-Clinton-
Caldwell-Livingston-Linn MO-Macon-Platte-Clay-Ray-Carroll-Chariton-
Randolph-Jackson-Lafayette-Saline-Howard-Cass-Johnson MO-Pettis-
Cooper-Bates-Henry-
448 AM CDT Thu Mar 26 2020

This hazardous weather outlook is for northwest...north central and
west central Missouri...as well as extreme eastern Kansas.

.DAY ONE...Today and Tonight

 Severe storms are possible tonight mainly along and south of Highway
 50.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

 Another round of severe storms is possible Friday evening in
 portions of southeast Kansas and west central Missouri.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

In the hours before

Local storm report, Mar 27, 2:22 AM CDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
222 AM CDT FRI MAR 27 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0215 AM     HAIL             3 W CENTERVIEW          38.75N 93.90W
03/27/2020  M1.25 INCH       JOHNSON            MO   NWS EMPLOYEE

            NWS EMPLOYEE MEASURED HALF DOLLAR SIZE HAIL.

&&

SPENCER.MELL

Local storm report, Mar 27, 2:25 AM CDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
225 AM CDT FRI MAR 27 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0209 AM     HAIL             HOLDEN                  38.71N 93.99W
03/27/2020  E1.00 INCH       JOHNSON            MO   TRAINED SPOTTER

            PEA TO QUARTER SIZE HAIL COVERING THE GROUND.

&&

SPENCER.MELL

Local storm report, Mar 27, 2:30 AM CDT, 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
230 AM CDT FRI MAR 27 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0210 AM     HAIL             HOLDEN                  38.71N 93.99W
03/27/2020  M1.50 INCH       JOHNSON            MO   TRAINED SPOTTER

&&

SPENCER.MELL

Local storm report, Mar 27, 2:31 AM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
231 AM CDT FRI MAR 27 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0230 AM     HAIL             5 S WARRENSBURG         38.69N 93.74W
03/27/2020  M1.00 INCH       JOHNSON            MO   TRAINED SPOTTER

            DIMES TO QUARTERS.

&&

SPENCER.MELL

Local storm report, Mar 27, 2:40 AM CDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
240 AM CDT FRI MAR 27 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0237 AM     HAIL             WHITEMAN AIR FORCE BASE 38.73N 93.55W
03/27/2020  M1.50 INCH       JOHNSON            MO   OTHER FEDERAL

&&

SPENCER.MELL

Special weather statement, Mar 27, 2:46 AM CDT, 6 minutes before

Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
246 AM CDT Fri Mar 27 2020

MOZ030-037-038-270830-
Ray MO-Lafayette MO-Jackson MO-
246 AM CDT Fri Mar 27 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN RAY...WEST CENTRAL
LAFAYETTE AND CENTRAL JACKSON COUNTIES UNTIL 330 AM CDT...

At 245 AM CDT, Doppler radar was tracking a strong thunderstorm over
Raytown, moving east at 50 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Kansas City, Independence, Lee's Summit, Blue Springs, Raytown, Grain
Valley, Oak Grove, Richmond, Sugar Creek, Buckner, Courtney, Orrick,
Wellington, Lake Tapawingo, Henrietta, Sibley, Levasy, Napoleon,
Bates City and Camden.

This includes the following highways...
 Interstate 70 in Missouri between mile markers 3 and 31.
 Interstate 470 between mile markers 12 and 16.
 Interstate 435 between mile markers 57 and 71.

A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
west central Missouri.

LAT...LON 3914 9448 3912 9446 3915 9442 3917 9437
      3916 9437 3917 9436 3921 9422 3921 9421
      3929 9394 3904 9386 3894 9455 3911 9457
TIME...MOT...LOC 0745Z 255DEG 44KT 3903 9449

Barham

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 26, 11:12 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Johnson	33 min
Mar 26, 11:36 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Pettis, Saline	24 min
Mar 26, 11:39 PM CDT	Special Weather Statement	EAX	Jackson	51 min
Mar 26, 11:57 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Pettis	33 min
Mar 27, 12:01 AM CDT	Special Weather Statement	EAX	Jackson	44 min
Mar 27, 12:05 AM CDT	Special Weather Statement	EAX	Johnson	25 min
Mar 27, 12:21 AM CDT	Severe Thunderstorm Warning	EAX	Cooper, Pettis	39 min
Mar 27, 12:30 AM CDT	Special Weather Statement	EAX	Cooper	60 min
Mar 27, 12:49 AM CDT	Special Weather Statement	EAX	Johnson	56 min
Mar 27, 12:53 AM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson, Johnson, Lafayette	37 min
Mar 27, 12:55 AM CDT	Areal Flood Advisory	EAX	Cass, Jackson	3 hr
Mar 27, 1:17 AM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	28 min
Mar 27, 1:41 AM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson, Johnson, Lafayette	34 min
Mar 27, 2:02 AM CDT	Severe Thunderstorm Warning	EAX	Cass, Johnson	28 min
Mar 27, 2:22 AM CDT	Severe Thunderstorm Warning	EAX	Johnson, Pettis	38 min
Mar 27, 2:46 AM CDT	Special Weather Statement	EAX	Jackson	44 min
Mar 27, 2:54 AM CDT	Severe Thunderstorm Warning	EAX	Jackson, Lafayette, Ray	38 min
Mar 27, 3:04 AM CDT	Special Weather Statement	EAX	Clay, Platte	41 min
Mar 27, 3:31 AM CDT	Special Weather Statement	EAX	Saline	44 min
Mar 27, 6:27 AM CDT	River Flood Warning	EAX	Johnson, Pettis	48 hr
Mar 27, 6:27 AM CDT	River Flood Warning	EAX	Cooper, Saline	5 days
Mar 27, 6:27 AM CDT	River Flood Warning	EAX	Cooper	40 hr
Mar 27, 3:29 PM CDT	River Flood Warning	EAX	Cass, Henry, Johnson	45 hr
Mar 27, 3:29 PM CDT	River Flood Warning	EAX	Andrew, Buchanan	43 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2020 Every severe thunderstorm warning in 2020

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.