Alert archive / Kansas / Tornado Warnings in 2018

Tornado Warning 23, NWS Topeka, KS

May 2, 2018Coffey County, Osage County, Kansas

NWS Topeka, KS issued this tornado warning at May 2, 2018, 7:48 PM CDT for Coffey County, Osage County, Kansas. It was in force for 27 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: May 2, 2018, 7:48 PM CDT (00:48 UTC)
Expired: May 2, 2018, 8:15 PM CDT
In force: 27 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Coffey County, KS, Osage County, KS

The radar

The Topeka radar (KTWX), 72 km from the middle of the area, began a volume at 00:48 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 2, 7:51 PM CDT	FUNNEL CLOUD	4 Ssw Lebo, KS
May 2, 8:04 PM CDT	TORNADO	2 Ese Olivet, KS	TORNADO WAS CONFIRMED IN CONTACT WITH THE GROUND AT INTERSECTION OF I-35 AND BETO JUNCTION.

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 2, 12:43 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.8 hours before the alert went out and 245 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: 1170 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1041 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 5.6

Open this sounding in Storm Lab

The text

As transmitted.

949 
WFUS53 KTOP 030048
TORTOP
KSC031-139-030115-
/O.NEW.KTOP.TO.W.0023.180503T0048Z-180503T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Topeka KS
748 PM CDT WED MAY 2 2018

The National Weather Service in Topeka has issued a

* Tornado Warning for...
  Southeastern Osage County in east central Kansas...
  Northern Coffey County in east central Kansas...

* Until 815 PM CDT

* At 747 PM CDT, severe thunderstorms capable of producing both
  tornadoes and extensive straight line wind damage were located near
  Lebo, moving east at 45 mph.

  HAZARD...Tornado and quarter 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. 

* These dangerous storms will be near...
  Melvern Lake around 755 PM CDT. 
  Olivet and Beto Junction around 800 PM CDT. 
  Melvern around 810 PM CDT. 
  Quenemo around 815 PM CDT. 

This includes Interstate 35 between mile markers 144 and 167.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3843 9595 3864 9552 3843 9551 3833 9595
TIME...MOT...LOC 0047Z 249DEG 41KT 3839 9589 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Skow

2 follow-up statements

212 
WWUS53 KTOP 030058
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
758 PM CDT WED MAY 2 2018

KSC031-139-030115-
/O.CON.KTOP.TO.W.0023.000000T0000Z-180503T0115Z/
Osage-Coffey-
758 PM CDT WED MAY 2 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
SOUTHEASTERN OSAGE AND NORTHEASTERN COFFEY COUNTIES...

At 758 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
Beto Junction, moving east at 45 mph.

HAZARD...Tornado and quarter size hail. 

SOURCE...Radar indicated rotation. A funnel cloud was reported 
         recently with this storm. 

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. 

These dangerous storms will be near...
  Melvern around 805 PM CDT. 
  Quenemo around 815 PM CDT. 

This includes Interstate 35 between mile markers 150 and 167.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3864 9552 3843 9551 3836 9583 3848 9585
TIME...MOT...LOC 0058Z 249DEG 41KT 3844 9574 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Skow

450 
WWUS53 KTOP 030106
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
806 PM CDT WED MAY 2 2018

KSC031-139-030115-
/O.CON.KTOP.TO.W.0023.000000T0000Z-180503T0115Z/
Osage-Coffey-
806 PM CDT WED MAY 2 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
SOUTHEASTERN OSAGE AND NORTHEASTERN COFFEY COUNTIES...
    
At 806 PM CDT, a confirmed tornado was located near Melvern, moving
east at 45 mph.

HAZARD...Damaging tornado and quarter size hail. 

SOURCE...Weather spotters confirmed tornado. 

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. 

This tornado will be near...
  Quenemo around 815 PM CDT. 

This includes Interstate 35 between mile markers 156 and 167.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3864 9552 3843 9551 3838 9572 3852 9575
TIME...MOT...LOC 0106Z 249DEG 41KT 3847 9563 

TORNADO...OBSERVED
HAIL...1.00IN

$$

Skow

The office that day

Everything else NWS Topeka, KS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 2, 7:01 PM CDT	Special Weather Statement	TOP	Douglas, Jefferson, Shawnee	44 min
May 2, 7:06 PM CDT	Severe Thunderstorm Warning	TOP	Lyon, Morris	39 min
May 2, 7:38 PM CDT	Severe Thunderstorm Warning	TOP	Coffey, Lyon, Osage	52 min
May 2, 7:47 PM CDT	Special Weather Statement	TOP	Jefferson	13 min
May 2, 7:56 PM CDT	Severe Thunderstorm Warning	TOP	Coffey	36 min
May 2, 8:12 PM CDT	Tornado Warning	TOP	Anderson, Coffey, Franklin, Osage	33 min
May 2, 8:15 PM CDT	Severe Thunderstorm Warning	TOP	Anderson, Coffey	45 min
May 2, 8:31 PM CDT	Tornado Warning	TOP	Anderson, Franklin	29 min
May 2, 8:40 PM CDT	Severe Thunderstorm Warning	TOP	Douglas	20 min
May 2, 9:20 PM CDT	Special Weather Statement	TOP	Brown, Jackson, Jefferson, Marshall, Nemaha	40 min
May 3, 5:45 AM CDT	River Flood Warning	TOP	Clay	12 hr
May 3, 3:54 PM CDT	Special Weather Statement	TOP	Clay	36 min
May 3, 4:29 PM CDT	Special Weather Statement	TOP	Riley	16 min
May 3, 4:35 PM CDT	Special Weather Statement	TOP	Marshall	25 min
May 3, 4:36 PM CDT	Special Weather Statement	TOP	Brown	24 min
May 3, 4:40 PM CDT	Special Weather Statement	TOP	Brown	20 min
May 3, 5:02 PM CDT	Special Weather Statement	TOP	Pottawatomie	13 min
May 3, 5:15 PM CDT	Special Weather Statement	TOP	Morris	15 min
May 3, 5:56 PM CDT	Special Weather Statement	TOP	Pottawatomie	34 min
May 3, 6:04 PM CDT	Areal Flood Advisory	TOP	Marshall	3 hr
May 3, 6:14 PM CDT	Severe Thunderstorm Warning	TOP	Marshall, Nemaha, Pottawatomie	46 min
May 3, 6:19 PM CDT	Special Weather Statement	TOP	Brown	26 min
May 3, 6:31 PM CDT	Special Weather Statement	TOP	Riley	14 min
May 3, 6:57 PM CDT	Severe Thunderstorm Warning	TOP	Marshall, Nemaha	33 min

Nearby

Tornado Warnings in Kansas, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.