Alert archive / Missouri / Tornado Warnings in 2017

Tornado Warning 34, NWS Kansas City, MO

June 28, 2017Harrison County, Mercer County, Missouri

NWS Kansas City, MO issued this tornado warning at Jun 28, 2017, 6:51 PM CDT for Harrison County, Mercer County, Missouri. It was in force for 39 min. 2 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: Jun 28, 2017, 6:51 PM CDT (23:51 UTC)
Expired: Jun 28, 2017, 7:30 PM CDT
In force: 39 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

Counties Harrison County, MO, Mercer County, MO

The radar

The Des Moines radar (KDMX), 141 km from the middle of the area, began a volume at 23:55 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
Jun 28, 6:55 PM CDT	TORNADO	2 N Cainsville, MO	NUMEROUS TREES UPROOTED AND POWER POLES SNAPPED, SOME BLOCKING ROADS. BARN DESTROYED.
Jun 28, 7:11 PM CDT	TORNADO	3 Nne Princeton, MO	BARN DESTROYED, POWER LINES DOWN. POSSIBLE TORNADO DAMAGE.

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
Jun 28, 2:53 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Topeka, KS (KFOE), launched 12:00Z, 11.9 hours before the alert went out and 232 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: 492 J/kg
Mixed-layer CIN: -235 J/kg
Mixed-layer LCL: 1188 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 214 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

951 
WFUS53 KEAX 282351
TOREAX
MOC081-129-290030-
/O.NEW.KEAX.TO.W.0034.170628T2351Z-170629T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Kansas City/Pleasant Hill MO
651 PM CDT WED JUN 28 2017

The National Weather Service in Pleasant Hill has issued a

* Tornado Warning for...
  Northern Mercer County in north central Missouri...
  Northeastern Harrison County in north central Missouri...

* Until 730 PM CDT
    
* At 651 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Cainsville, or 17 miles northeast of Bethany,
  moving east at 30 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...
  Princeton, Mercer and Cainsville. 

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.

&&

LAT...LON 4041 9388 4055 9387 4058 9342 4035 9343
TIME...MOT...LOC 2351Z 274DEG 26KT 4047 9383 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

Blair

1 follow-up statement

551 
WWUS53 KEAX 290013
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
713 PM CDT WED JUN 28 2017

MOC081-290023-
/O.CAN.KEAX.TO.W.0034.000000T0000Z-170629T0030Z/
Harrison MO-
713 PM CDT WED JUN 28 2017

...THE TORNADO WARNING FOR NORTHEASTERN HARRISON COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 1000 PM CDT for north central
Missouri.

LAT...LON 4040 9370 4056 9367 4058 9342 4035 9343
TIME...MOT...LOC 0013Z 274DEG 29KT 4045 9356 

$$

MOC129-290030-
/O.CON.KEAX.TO.W.0034.000000T0000Z-170629T0030Z/
Mercer MO-
713 PM CDT WED JUN 28 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR NORTHERN
MERCER COUNTY...
    
At 713 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Princeton, or 22 miles southeast of Leon, moving
east at 35 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...
Princeton and Mercer. 

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.

&&

LAT...LON 4040 9370 4056 9367 4058 9342 4035 9343
TIME...MOT...LOC 0013Z 274DEG 29KT 4045 9356 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

Blair

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 4:11 AM CDT	Special Weather Statement	EAX	Atchison	34 min
Jun 28, 6:03 AM CDT	Special Weather Statement	EAX	Andrew	42 min
Jun 28, 4:18 PM CDT	Special Weather Statement	EAX	Nodaway	27 min
Jun 28, 4:38 PM CDT	Severe Thunderstorm Warning	EAX	Atchison	52 min
Jun 28, 5:00 PM CDT	Tornado Warning	EAX	Nodaway, Worth	30 min
Jun 28, 5:25 PM CDT	Severe Thunderstorm Warning	EAX	Nodaway	35 min
Jun 28, 5:49 PM CDT	Tornado Warning	EAX	Nodaway, Worth	26 min
Jun 28, 6:12 PM CDT	Severe Thunderstorm Warning	EAX	Gentry, Harrison, Nodaway, Worth	48 min
Jun 28, 6:17 PM CDT	Areal Flood Advisory	EAX	Nodaway, Worth	3 hr
Jun 28, 6:21 PM CDT	Tornado Warning	EAX	Gentry, Harrison, Worth	24 min
Jun 28, 6:36 PM CDT	Flash Flood Warning	EAX	Harrison, Nodaway, Worth	9 hr
Jun 28, 6:44 PM CDT	Tornado Warning	EAX	Gentry, Harrison, Worth	46 min

Nearby

Tornado Warnings in Missouri, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.