Alert archive / Missouri / Tornado Warnings in 2017

Tornado Warning 32, NWS Kansas City, MO

June 28, 2017Gentry County, Harrison County, Worth County, Missouri

NWS Kansas City, MO issued this tornado warning at Jun 28, 2017, 6:21 PM CDT for Gentry County, Harrison County, Worth County, Missouri. It was in force for 24 min. 4 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, 6:21 PM CDT (23:21 UTC)
Expired: Jun 28, 2017, 6:45 PM CDT
In force: 24 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Gentry County, MO, Harrison County, MO, Worth County, MO

The radar

The Des Moines radar (KDMX), 153 km from the middle of the area, began a volume at 23:22 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, 6:32 PM CDT	TSTM WND DMG	3 Ene Worth, MO	POWER POLES SNAPPED. POSSIBLE TORNADO.
Jun 28, 6:35 PM CDT	HAIL 1	3 Nw Worth, MO	ALSO 40-50 MPH WIND.
Jun 28, 6:45 PM CDT	HAIL 1.75	2 Nnw Denver, MO
Jun 28, 6:52 PM CDT	FUNNEL CLOUD	3 S Denver, MO	FUNNEL CLOUD NORTH OF DARLINGTON AND HWY 136 WAS SPOTTED LOWERING AND THEN RISING BACK UP.

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, 11.4 hours before the alert went out and 195 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.

086 
WFUS53 KEAX 282321
TOREAX
MOC075-081-227-282345-
/O.NEW.KEAX.TO.W.0032.170628T2321Z-170628T2345Z/

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

The National Weather Service in Pleasant Hill has issued a

* Tornado Warning for...
  Southern Worth County in northwestern Missouri...
  Northern Gentry County in northwestern Missouri...
  Northwestern Harrison County in north central Missouri...

* Until 645 PM CDT
    
* At 621 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 7 miles southwest of Grant City, or 13 miles north of
  Stanberry, moving east at 45 mph.

  HAZARD...Tornado and golf ball 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...
  Grant City, Worth, Allendale, Denver and Martinsville. 

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 4052 9415 4032 9415 4035 9460 4048 9460
TIME...MOT...LOC 2321Z 267DEG 38KT 4041 9451 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

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, 6:36 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
Jun 28, 6:51 PM CDT	Tornado Warning	EAX	Harrison, Mercer	39 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.