Alert archive / Kansas / Tornado Warnings in 2009

Tornado Warning 2, NWS Kansas City, MO

April 25, 2009Leavenworth County, Wyandotte County, Kansas

NWS Kansas City, MO issued this tornado warning at Apr 25, 2009, 6:57 PM CDT for Leavenworth County, Wyandotte County, Kansas. It was in force for 33 min. 1 report 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: Apr 25, 2009, 6:57 PM CDT (23:57 UTC)
Expired: Apr 25, 2009, 7:30 PM CDT
In force: 33 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon

Counties Leavenworth County, KS, Wyandotte County, KS

The radar

The Pleasant Hill radar (KEAX), 62 km from the middle of the area, began a volume at 23:56 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
Apr 25, 7:03 PM CDT	FUNNEL CLOUD	6 N De Soto, KS	FUNNEL CLOUD REPORT 6 N OF DE SOTO AND 8 SW OF LEAVENWORTH.

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
Apr 25, 4:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 12.0 hours before the alert went out and 65 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: 558 J/kg
Mixed-layer CIN: -281 J/kg
Mixed-layer LCL: 776 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 251 m²/s²
0-3 km storm-relative helicity: 282 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 252357
TOREAX
KSC103-209-260030-
/O.NEW.KEAX.TO.W.0002.090425T2357Z-090426T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
657 PM CDT SAT APR 25 2009

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN LEAVENWORTH COUNTY IN NORTHEAST KANSAS...
  WESTERN WYANDOTTE COUNTY IN NORTHEAST KANSAS...

* UNTIL 730 PM CDT

* AT 654 PM CDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO NEAR
  TONGANOXIE. DOPPLER RADAR SHOWED THIS TORNADO MOVING NORTHEAST
  AT 20 MPH. SEEK SHELTER NOW

* THE TORNADO WILL BE NEAR...
  AREAS SOUTH OF BASEHOR AND NORTH OF BONNER SPRINGS AROUND 710 PM
  CDT. EDWARDSVILLE AROUND 720 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE PIPER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN PLEASANT HILL.

&&

LAT...LON 3913 9500 3919 9483 3906 9479 3905 9483
      3905 9485 3904 9489 3903 9489 3900 9499
TIME...MOT...LOC 2356Z 242DEG 17KT 3908 9501

$$

PC

3 follow-up statements

000 
WWUS53 KEAX 260004
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
704 PM CDT SAT APR 25 2009

KSC103-209-260030-
/O.CON.KEAX.TO.W.0002.000000T0000Z-090426T0030Z/
LEAVENWORTH KS-WYANDOTTE KS-
704 PM CDT SAT APR 25 2009

...A TORNADO WARNING REMAINS IN EFFECT FOR WESTERN WYANDOTTE AND
SOUTHEASTERN LEAVENWORTH COUNTIES UNTIL 730 PM CDT...

AT 703 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS 
STORM WAS LOCATED NEAR BASEHOR...MOVING NORTHEAST AT 20 MPH. THIS 
STORM HAS PRODUCED A TORNADO AND WILL BE CAPABLE OF PRODUCING 
ADDITIONAL TORNADOES. IN ADDITION...LARGE HAIL TO THE SIZE OF 
WALNUTS WILL BE POSSIBLE WITH THIS STORM. 

THIS DANGEROUS STORM WILL BE NEAR...
  SOUTH OF BASEHOR AND NORTH OF BONNER SPRINGS AROUND 715 PM CDT.
  EDWARDSVILLE AROUND 720 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS TORNADO INCLUDE PIPER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN PLEASANT HILL.

&&

LAT...LON 3913 9500 3919 9483 3906 9479 3905 9483
      3905 9485 3904 9489 3903 9489 3900 9499
TIME...MOT...LOC 0003Z 242DEG 17KT 3909 9497

$$

PC

000 
WWUS53 KEAX 260018
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
718 PM CDT SAT APR 25 2009

KSC103-260027-
/O.CAN.KEAX.TO.W.0002.000000T0000Z-090426T0030Z/
LEAVENWORTH KS-
718 PM CDT SAT APR 25 2009

...THE TORNADO WARNING FOR SOUTHEASTERN LEAVENWORTH COUNTY IS
CANCELLED...

AT 715 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE 
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA. 
THEREFORE...THE TORNADO WARNING IS CANCELLED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN PLEASANT HILL.

&&

LAT...LON 3912 9490 3916 9490 3919 9483 3907 9480
      3906 9479 3904 9489 3903 9489 3903 9490
      3912 9491
TIME...MOT...LOC 0017Z 242DEG 17KT 3913 9487

$$

KSC209-260030-
/O.CON.KEAX.TO.W.0002.000000T0000Z-090426T0030Z/
WYANDOTTE KS-
718 PM CDT SAT APR 25 2009

...A TORNADO WARNING REMAINS IN EFFECT FOR WESTERN WYANDOTTE COUNTY
UNTIL 730 PM CDT...

AT 715 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS 
STORM WAS LOCATED NEAR BASEHOR...MOVING NORTHEAST AT 20 MPH. IT HAS 
A HISTORY OF PRODUCING A TORNADO AND MAY PRODUCE ADDITIONAL 
TORNADOES AT ANY TIME.

THIS TORNADO WILL AFFECT MAINLY RURAL AREAS OF WESTERN WYANDOTTE
COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN PLEASANT HILL.

&&

LAT...LON 3912 9490 3916 9490 3919 9483 3907 9480
      3906 9479 3904 9489 3903 9489 3903 9490
      3912 9491
TIME...MOT...LOC 0017Z 242DEG 17KT 3913 9487

$$

PC

000 
WWUS53 KEAX 260027
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
727 PM CDT SAT APR 25 2009

KSC209-260036-
/O.EXP.KEAX.TO.W.0002.000000T0000Z-090426T0030Z/
WYANDOTTE KS-
727 PM CDT SAT APR 25 2009

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

AT 726 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE WEAKENED...AND NO
LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. THEREFORE...THE 
TORNADO WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER...THESE STORMS 
CAN RECYCLE AND REINTENSIFY SO PERSON IN NORTHERN WYANDOTTE AND 
SOUTHERN PLATTE COUNTY SHOULD CONTINUE TO MONITOR THE WEATHER 
SITUATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN PLEASANT HILL.

&&

LAT...LON 3912 9490 3916 9490 3919 9483 3907 9480
      3906 9479 3904 9489 3903 9489 3903 9490
      3912 9491
TIME...MOT...LOC 0026Z 242DEG 17KT 3915 9482

$$

PC

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 4:04 PM CDT	Flood Watch	EAX	Atchison, Doniphan, Johnson, Leavenworth, Linn, Miami and 1 more	43 hr
Apr 25, 4:52 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Leavenworth	23 min
Apr 25, 5:15 PM CDT	Severe Thunderstorm Warning	EAX	Leavenworth	30 min
Apr 25, 6:13 PM CDT	Severe Thunderstorm Warning	EAX	Leavenworth	32 min
Apr 25, 6:24 PM CDT	Flash Flood Warning	EAX	Leavenworth, Wyandotte	6 hr
Apr 25, 6:33 PM CDT	Tornado Warning	EAX	Leavenworth	27 min

Nearby

Tornado Warnings in Kansas, 2009 Every tornado warning in 2009 Tornadoes in 2009

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.