Alert archive / Missouri / Tornado Warnings in 2017

Tornado Warning 25, NWS Kansas City, MO

May 27, 2017Henry County, Missouri

NWS Kansas City, MO issued this tornado warning at May 27, 2017, 1:15 PM CDT for Henry County, Missouri. It was in force for 30 min. 9 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: May 27, 2017, 1:15 PM CDT (18:15 UTC)
Expired: May 27, 2017, 1:45 PM CDT
In force: 30 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 2.75 in

County Henry County, MO

The radar

The Pleasant Hill radar (KEAX), 80 km from the middle of the area, began a volume at 18:18 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
May 27, 1:25 PM CDT	TSTM WND DMG	Clinton, MO	MULTIPLE REPORTS OF POWERLINES DOWN IN CLINTON VIA EM.
May 27, 1:25 PM CDT	TSTM WND DMG	Clinton, MO	LARGE TREE UPROOTED IN THE TOWN OF CLINTON
May 27, 1:25 PM CDT	HAIL 0.88	Clinton, MO	DIME TO NICKEL SIZE HAIL REPORTED AT THE EOC IN CLINTON
May 27, 1:29 PM CDT	TSTM WND DMG	Clinton, MO	LARGE TREE LIMBS DOWN
May 27, 1:33 PM CDT	TSTM WND GST 60	2 S Clinton, MO
May 27, 1:33 PM CDT	HAIL 1.75	2 S Clinton, MO
May 27, 1:48 PM CDT	HAIL 2	4 S Coal, MO	REPORT FROM EM OF SEVERAL VEHICHLES WITH WINDSHIELDS BROKEN OUT DUE TO HAIL AT THE BUCKSAW MARINA. HAIL SIZE UNKNOWN.
May 27, 1:53 PM CDT	HAIL 2	5 S Tightwad, MO
May 27, 1:54 PM CDT	HAIL 1.75	3 S Coal, MO	WINDSHIELD BROKEN ON TRUCK

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
May 27, 12:13 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 6.3 hours before the alert went out and 150 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: 3187 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 766 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 9.6

Open this sounding in Storm Lab

The text

As transmitted.

458 
WFUS53 KEAX 271815
TOREAX
MOC083-271845-
/O.NEW.KEAX.TO.W.0025.170527T1815Z-170527T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Kansas City/Pleasant Hill MO
115 PM CDT SAT MAY 27 2017

The National Weather Service in Pleasant Hill has issued a

* Tornado Warning for...
  Southern Henry County in west central Missouri...

* Until 145 PM CDT
    
* At 115 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Clinton, moving southeast at 40 mph.

  HAZARD...Tornado and baseball 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...
  Clinton, Deepwater, Montrose, Coal, Brownington, Tightwad, La Due
  and Truman Lake.

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 3821 9392 3825 9400 3841 9391 3830 9352
      3821 9352 3821 9354 3822 9356 3821 9357
      3820 9356
TIME...MOT...LOC 1815Z 301DEG 36KT 3835 9389 

TORNADO...RADAR INDICATED
HAIL...2.75IN

$$

Blair

1 follow-up statement

249 
WWUS53 KEAX 271838
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
138 PM CDT SAT MAY 27 2017

MOC083-271847-
/O.EXP.KEAX.TO.W.0025.000000T0000Z-170527T1845Z/
Henry MO-
138 PM CDT SAT MAY 27 2017

...THE TORNADO WARNING FOR SOUTHERN HENRY COUNTY WILL EXPIRE AT 145
PM CDT...
                
The storm which prompted the warning has become less tornadic, and 
no longer appears capable of producing a tornado. Therefore the 
warning will be allowed to expire. However hail and severe winds are 
still possible with these thunderstorms.

A tornado watch remains in effect until 700 PM CDT for west central
Missouri.

LAT...LON 3821 9392 3825 9400 3841 9391 3830 9352
      3821 9352 3821 9354 3822 9356 3821 9357
      3820 9356
TIME...MOT...LOC 1837Z 301DEG 36KT 3824 9366 

$$

Blair

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 7:41 AM CDT	Special Weather Statement	EAX	Atchison, Holt	34 min
May 27, 8:30 AM CDT	Special Weather Statement	EAX	Clay, Platte	30 min
May 27, 8:33 AM CDT	Special Weather Statement	EAX	Nodaway	27 min
May 27, 9:06 AM CDT	Special Weather Statement	EAX	Clinton	39 min
May 27, 9:13 AM CDT	Special Weather Statement	EAX	Gentry, Harrison, Worth	47 min
May 27, 9:29 AM CDT	Special Weather Statement	EAX	Caldwell	46 min
May 27, 9:41 AM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Carroll, Daviess, Grundy, Livingston, Ray	34 min
May 27, 12:10 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	50 min
May 27, 12:29 PM CDT	Severe Thunderstorm Warning	EAX	Bates	46 min
May 27, 12:49 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Henry, Johnson, Lafayette	56 min
May 27, 1:36 PM CDT	Severe Thunderstorm Warning	EAX	Henry, Johnson, Lafayette, Pettis, Saline	43 min
May 27, 2:08 PM CDT	Severe Thunderstorm Warning	EAX	Cooper	52 min
May 27, 5:16 PM CDT	Special Weather Statement	EAX	Jackson	29 min
May 27, 5:22 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	38 min
May 27, 5:47 PM CDT	Special Weather Statement	EAX	Johnson	43 min
May 27, 6:13 PM CDT	Severe Thunderstorm Warning	EAX	Cooper, Pettis, Saline	35 min
May 27, 6:43 PM CDT	Special Weather Statement	EAX	Cooper	32 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.