Alert archive / Kansas / Tornado Warnings in 2017

Tornado Warning 7, NWS Topeka, KS

March 6, 20174 counties in Kansas

NWS Topeka, KS issued this tornado warning at Mar 6, 2017, 6:30 PM CST for 4 counties in Kansas. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 6, 2017, 6:30 PM CST (00:30 UTC)
Expired
Mar 6, 2017, 7:00 PM CST
In force
30 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Lyon County, KS, Osage County, KS, Shawnee County, KS, Wabaunsee County, KS

The radar

The Topeka radar (KTWX), 57 km from the middle of the area, began a volume at 00:34 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.

The watch it was issued in

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

IssuedProductOfficeLasted
Mar 6, 2:27 PM CSTTornado WatchSPC8 hr

The nearest sounding before it

Topeka, KS (KFOE), launched 00:00Z, 0.5 hours before the alert went out and 34 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-pSkew-T log-p diagram, Topeka, KS at 00:00Z on 2017-03-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 707 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 00:00Z on 2017-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 333 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
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
707 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
1970 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
333 m²/s²
0-3 km storm-relative helicity
349 m²/s²
Significant tornado parameter
0.0
Supercell composite
9.4

Open this sounding in Storm Lab

The text

As transmitted.

223 
WFUS53 KTOP 070030
TORTOP
KSC111-139-177-197-070100-
/O.NEW.KTOP.TO.W.0007.170307T0030Z-170307T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Topeka KS
630 PM CST MON MAR 6 2017

The National Weather Service in Topeka has issued a

* Tornado Warning for...
  Southeastern Shawnee County in east central Kansas...
  Southeastern Wabaunsee County in east central Kansas...
  Osage County in east central Kansas...
  Northern Lyon County in east central Kansas...

* Until 700 PM CST
    
* At 629 PM CST, a severe thunderstorm capable of producing a tornado
  was located near Allen, moving east at 50 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. 

* This dangerous storm will be near...
  Osage City around 655 PM CST. 
  Lyndon and Pomona Lake around 700 PM CST. 

This includes Kansas Turnpike between mile markers 137 and 166.
 
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 3869 9551 3853 9551 3852 9627 3887 9604
      3889 9550 3870 9550
TIME...MOT...LOC 0029Z 266DEG 43KT 3860 9617 

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

$$

BB
1 follow-up statement
175 
WWUS53 KTOP 070050
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
650 PM CST MON MAR 6 2017

KSC111-139-177-197-070100-
/O.EXP.KTOP.TO.W.0007.000000T0000Z-170307T0100Z/
Shawnee-Wabaunsee-Osage-Lyon-
650 PM CST MON MAR 6 2017

...THE TORNADO WARNING FOR SOUTHEASTERN SHAWNEE...SOUTHEASTERN
WABAUNSEE...OSAGE AND NORTHERN LYON COUNTIES WILL EXPIRE AT 700 PM
CST...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

A tornado watch remains in effect until 1000 PM CST for east central
Kansas.

Remember, a Severe Thunderstorm Warning still remains in effect.

LAT...LON 3869 9551 3853 9551 3852 9627 3887 9604
      3889 9550 3870 9550
TIME...MOT...LOC 0050Z 266DEG 43KT 3862 9587 

$$

BB

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 6, 6:05 PM CSTTornado WarningTOPLyon, Morris, Wabaunsee25 min
Mar 6, 6:19 PM CSTTornado WarningTOPShawnee26 min
Mar 6, 6:30 PM CSTTornado Warning Tornado observedTOPJackson, Jefferson, Shawnee30 min
Mar 6, 6:35 PM CSTSevere Thunderstorm WarningTOPCoffey, Lyon, Osage25 min
Mar 6, 6:47 PM CSTSevere Thunderstorm WarningTOPDouglas, Jefferson, Osage, Shawnee43 min
Mar 6, 6:49 PM CSTSevere Thunderstorm WarningTOPDouglas, Franklin, Lyon, Osage56 min
Mar 6, 6:56 PM CSTSevere Thunderstorm WarningTOPAnderson, Coffey, Franklin, Lyon, Osage64 min
Mar 6, 7:27 PM CSTSevere Thunderstorm WarningTOPDouglas18 min
Mar 6, 7:42 PM CSTSpecial Weather StatementTOPFranklin18 min
Mar 6, 7:54 PM CSTSevere Thunderstorm WarningTOPAnderson, Coffey, Franklin32 min
Mar 7, 3:27 AM CSTWind AdvisoryTOPAnderson, Brown, Clay, Cloud, Coffey, Dickinson and 17 more15 hr
Mar 7, 3:30 PM CSTFire Weather WatchTOPAnderson, Brown, Coffey, Dickinson, Douglas, Franklin and 12 more12 hr

Nearby

Tornado Warnings in Kansas, 2017Every tornado warning in 2017Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.