Alert archive / Kansas / Tornado Warnings in 2008

Tornado Warning 50, NWS Kansas City, MO

September 12, 2008Johnson County, Kansas

NWS Kansas City, MO issued this tornado warning at Sep 12, 2008, 4:51 PM CDT for Johnson County, Kansas. It was in force for 24 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: Sep 12, 2008, 4:51 PM CDT (21:51 UTC)
Expired: Sep 12, 2008, 5:15 PM CDT
In force: 24 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon

County Johnson County, KS

The radar

The Pleasant Hill radar (KEAX), 58 km from the middle of the area, began a volume at 21:54 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
Sep 12, 5:13 PM CDT	TORNADO	3 Sw De Soto, KS	TORNADO REPORTED NEAR 103RD AND SUNFLOWER IN CLEARVIEW CITY.
Sep 12, 5:25 PM CDT	TORNADO	2 E De Soto, KS	RELAYED FROM WFO TOP FROM KANSAS STATE TROOPER AT 83RD AND CEDAR CREEK.

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
Sep 12, 4:28 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 9.9 hours before the alert went out and 64 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 595 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS53 KEAX 122151
TOREAX
KSC091-122215-
/O.NEW.KEAX.TO.W.0050.080912T2151Z-080912T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
451 PM CDT FRI SEP 12 2008

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN JOHNSON COUNTY IN EAST CENTRAL KANSAS

* UNTIL 515 PM CDT

* AT 445 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM 
  WAS LOCATED 9 MILES NORTHWEST OF EDGERTON...AND MOVING NORTHEAST   
  AT 30 MPH. THIS DANGEROUS STORM HAS A HISTORY OF PRODUCING A 
  TORNADO NEAR BALDWIN CITY. 

* THIS TORNADIC STORM WILL BE NEAR...
  DE SOTO BY 510 PM CDT.
  9 MILES WEST OF LAKE QUIVIRA BY 515 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
CLEARVIEW CITY...MONTICELLO AND ZARAH.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW IF YOU WAIT 
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3883 9505 3896 9505 3900 9493 3898 9492
      3900 9490 3903 9489 3904 9487 3905 9469
      3904 9467
TIME...MOT...LOC 2150Z 226DEG 27KT 3888 9510

$$

BOOKBINDER

2 follow-up statements

000 
WWUS53 KEAX 122157
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
457 PM CDT FRI SEP 12 2008

KSC091-122215-
/O.CON.KEAX.TO.W.0050.000000T0000Z-080912T2215Z/
JOHNSON KS-
457 PM CDT FRI SEP 12 2008

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN JOHNSON
COUNTY IN EAST CENTRAL KANSAS UNTIL 515 PM CDT...

AT 450 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO JUST 
SOUTH OF EUDORA.  THIS TORNADO WAS LOCATED 9 MILES NORTHWEST OF 
EDGERTON...MOVING NORTHEAST AT 25 MPH.

THE TORNADO WILL BE NEAR...
  DE SOTO BY 515 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS TORNADO INCLUDE CLEARVIEW CITY.

THIS TORNADO MAY BECOME OBSCURED BY RAIN AND MAY NOT BE VISIBLE. 
TAKE COVER IN SAFE SHELTER NOW IF YOU WAIT TO SEE OR HEAR IT 
COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT OR STORM
SHELTER. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF
NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3883 9505 3896 9505 3900 9493 3898 9492
      3900 9490 3903 9489 3904 9487 3905 9469
      3904 9467
TIME...MOT...LOC 2157Z 228DEG 22KT 3889 9508

$$

BOOKBINDER

000 
WWUS53 KEAX 122207
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
507 PM CDT FRI SEP 12 2008

KSC091-122215-
/O.CON.KEAX.TO.W.0050.000000T0000Z-080912T2215Z/
JOHNSON KS-
506 PM CDT FRI SEP 12 2008

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN JOHNSON
COUNTY IN EAST CENTRAL KANSAS UNTIL 515 PM CDT...

AT 502 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM HAS A 
HISTORY OF PRODUCING TORNADOES AND CONTINUES TO EXHIBIT VERY STRONG 
ROTATION ABOUT 6 MILES SOUTHWEST OF DE SOTO. THE TORNADIC STORM WAS 
MOVING NORTHEAST AT 25 MPH.

THIS DANGEROUS STORM WILL BE NEAR...
  5 MILES SOUTH OF DE SOTO AND CLEARVIEW CITY BY 515 PM CDT.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT OR STORM
SHELTER. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF
NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3888 9505 3896 9505 3899 9496 3898 9494
      3899 9493 3898 9492 3904 9487 3905 9477
      3904 9467
TIME...MOT...LOC 2206Z 228DEG 22KT 3893 9503

$$

BOOKBINDER

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 11, 11:55 PM CDT	Areal Flood Advisory	EAX	Doniphan	6 hr
Sep 12, 5:18 AM CDT	Areal Flood Advisory	EAX	Linn, Miami	6 hr
Sep 12, 6:51 AM CDT	Areal Flood Advisory	EAX	Johnson, Leavenworth, Wyandotte	8 hr
Sep 12, 7:26 AM CDT	Flash Flood Warning	EAX	Miami	6 hr
Sep 12, 8:42 AM CDT	River Flood Warning	EAX	Miami	4 days
Sep 12, 8:42 AM CDT	River Flood Warning	EAX	Linn	6 days
Sep 12, 11:43 AM CDT	Areal Flood Advisory	EAX	Atchison, Doniphan	8 hr
Sep 12, 1:32 PM CDT	Areal Flood Warning	EAX	Miami	8 hr
Sep 12, 4:32 PM CDT	Tornado Warning	EAX	Miami	28 min
Sep 12, 4:55 PM CDT	Tornado Warning	EAX	Johnson, Miami	35 min
Sep 12, 5:13 PM CDT	Tornado Warning	EAX	Johnson	47 min
Sep 12, 5:22 PM CDT	Areal Flood Advisory	EAX	Johnson, Leavenworth, Wyandotte	6 hr
Sep 12, 5:23 PM CDT	Tornado Warning	EAX	Leavenworth, Wyandotte	37 min
Sep 12, 5:29 PM CDT	Tornado Warning	EAX	Johnson	31 min
Sep 12, 5:59 PM CDT	Tornado Warning	EAX	Wyandotte	46 min
Sep 12, 6:01 PM CDT	Tornado Warning	EAX	Johnson	26 min
Sep 12, 6:30 PM CDT	Flash Flood Warning	EAX	Johnson, Leavenworth, Wyandotte	6 hr
Sep 12, 6:38 PM CDT	Areal Flood Advisory	EAX	Johnson, Wyandotte	6 hr

Nearby

Tornado Warnings in Kansas, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.