Alert archive / Kansas / Tornado Warnings in 2008

Tornado Warning 7, NWS Kansas City, MO

May 1, 2008Johnson County, Wyandotte County, Kansas

NWS Kansas City, MO issued this tornado warning at May 1, 2008, 7:12 PM CDT for Johnson County, Wyandotte County, Kansas. It was in force for 33 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
May 1, 2008, 7:12 PM CDT (00:12 UTC)
Expired
May 1, 2008, 7:45 PM CDT
In force
33 min
Issued by
NWS Kansas City, MO
Area
Storm-based polygon

Counties Johnson County, KS, Wyandotte County, KS

The radar

The Pleasant Hill radar (KEAX), 54 km from the middle of the area, began a volume at 00:13 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
May 1, 5:36 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 0.2 hours before the alert went out and 78 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 2008-05-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2008-05-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3122 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
168 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 020014 RRA
TOREAX
KSC091-209-020045-
/O.NEW.KEAX.TO.W.0007.080502T0012Z-080502T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
712 PM CDT THU MAY 1 2008

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN JOHNSON COUNTY IN EAST CENTRAL KANSAS
  WYANDOTTE COUNTY IN NORTHEAST KANSAS

* UNTIL 745 PM CDT

* AT 709 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. LOCAL MEDIA 
  CAMERAS SHOWED A WELL DEFINED WALL CLOUD WITH THIS STORM JUST 
  SOUTHEAST OF BONNER SPRINGS. THIS DANGEROUS STORM WAS MOVING 
  NORTHEAST AT 25 MPH.

* THIS TORNADIC STORM WILL TRACK NEAR EDWARDSVILLE AND MUNCIE 
  INCLUDING INTERSTATE 435.

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA. GO TO A BASEMENT OR SMALL INTERIOR
ROOM ON THE LOWEST FLOOR

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 3917 9474 3917 9469 3915 9463 3915 9460
      3914 9460 3896 9487 3902 9492 3905 9491
      3918 9475
TIME...MOT...LOC 0012Z 227DEG 23KT 3904 9484

$$

BOOKBINDER
2 follow-up statements
000 
WWUS53 KEAX 020022
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
720 PM CDT THU MAY 1 2008

KSC091-020030-
/O.CAN.KEAX.TO.W.0007.000000T0000Z-080502T0045Z/
JOHNSON KS-
720 PM CDT THU MAY 1 2008

...THE TORNADO WARNING FOR NORTHERN JOHNSON COUNTY IN EAST CENTRAL
KANSAS IS CANCELLED...

AT 718 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE 
THUNDERSTORM WHICH PROMPTED THE WARNING HAVE MOVED INTO WYANDOTTE 
OUT OF THE AREA...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR 
PROPERTY. THEREFORE...THE TORNADO WARNING IS CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FRIDAY MORNING FOR
NORTHEASTERN KANSAS AND NORTHWESTERN MISSOURI. ADDITIONAL 
THUNDERSTORM DEVELOPMENT IS LIKELY.

LAT...LON 3918 9475 3917 9474 3917 9469 3915 9463
      3915 9460 3914 9460 3904 9475 3905 9487
      3904 9490
TIME...MOT...LOC 0020Z 227DEG 23KT 3907 9479

$$

KSC209-020045-
/O.CON.KEAX.TO.W.0007.000000T0000Z-080502T0045Z/
WYANDOTTE KS-
720 PM CDT THU MAY 1 2008

...A TORNADO WARNING REMAINS IN EFFECT FOR WYANDOTTE COUNTY UNTIL 745
PM CDT...

AT 718 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. LOCAL MEDIA LIVE 
CAMERAS CONTINUE TO INDICATE A WELL DEFINED WALL CLOUD WITH THIS 
STORM...AND A TORNADO COULD DEVELOP AT ANY TIME THIS DANGEROUS 
STORM WAS LOCATED NEAR EDWARDSVILLE...MOVING NORTHEAST AT 25 MPH.

AREAS BETWEEN EDWARDSVILLE AND MUNCIE REMAIN IN THE PATH OF THIS 
STORM...INCLUDING THE INTERSTATE 435 CORRIDOR. AREAS NORTH AND WEST 
OF THE STRONG ROTATION CAN EXPECT GOLFBALL OR LARGER HAIL.

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 3918 9475 3917 9474 3917 9469 3915 9463
      3915 9460 3914 9460 3904 9475 3905 9487
      3904 9490
TIME...MOT...LOC 0020Z 227DEG 23KT 3907 9479

$$

BOOKBINDER
000 
WWUS53 KEAX 020041
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
741 PM CDT THU MAY 1 2008

KSC209-020051-
/O.EXP.KEAX.TO.W.0007.000000T0000Z-080502T0045Z/
WYANDOTTE KS-
741 PM CDT THU MAY 1 2008

...THE TORNADO WARNING FOR WYANDOTTE COUNTY WILL EXPIRE AT 745 PM
CDT...

AT 738 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE 
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED NORTHEAST OF THE 
AREA. THEREFORE...THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FRIDAY MORNING FOR
NORTHEASTERN KANSAS AND NORTHWESTERN MISSOURI.

LAT...LON 3918 9475 3917 9474 3917 9469 3915 9463
      3915 9460 3914 9460 3904 9475 3905 9487
      3904 9490
TIME...MOT...LOC 0041Z 227DEG 23KT 3916 9466

$$

BOOKBINDER

The office that day

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

IssuedProductOfficeCountiesLasted
May 1, 7:18 PM CDTSevere Thunderstorm WarningEAXJohnson, Miami42 min
May 1, 7:36 PM CDTTornado WarningEAXWyandotte39 min
May 1, 7:37 PM CDTTornado WarningEAXJohnson38 min
May 1, 8:11 PM CDTSevere Thunderstorm WarningEAXJohnson34 min
May 1, 8:21 PM CDTSevere Thunderstorm WarningEAXMiami39 min
May 1, 8:49 PM CDTTornado WarningEAXJohnson, Miami26 min
May 1, 10:45 PM CDTTornado WarningEAXLinn22 min
May 2, 1:13 AM CDTSevere Thunderstorm WarningEAXJohnson, Leavenworth, Miami, Wyandotte47 min

Nearby

Tornado Warnings in Kansas, 2008Every tornado warning in 2008Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.